California Code of Regulations
Title 13 - Motor Vehicles
Division 3 - Air Resources Board
Chapter 4 - Criteria for the Evaluation of Motor Vehicle Pollution Control Devices and Fuel Additives
Article 1 - Fuel Additives and Prototype Emission Control Devices
Section 2208.1 - Certification Flexibility for Innovative Heavy-Duty Engine Technology

Universal Citation: 13 CA Code of Regs 2208.1

Current through Register 2024 Notice Reg. No. 38, September 20, 2024

(a) General Requirements.

(1) Heavy-Duty Engine Family Certification Requirements.

Unless otherwise indicated in this regulation, a heavy-duty engine family must comply with the certification requirements of California Code of Regulations, title 13, section 1956.8 and California Code of Regulations, title 13, section 1971.1. For such engines, the manufacturer must demonstrate compliance through the certification application process, and also comply with all reporting and recordkeeping requirements, of California Code of Regulations, title 13, sections 1969, 1971.1, 1971.5, and 2065.

(A) A heavy-duty engine family certified to meet alternate emission standards pursuant to section 2208.1, subdivision (c)(4), is not required to be certified pursuant to California Code of Regulations, title 13, section 1956.8, subdivision (b) or (d).

(2) Surplus Emission Reductions.
(A) Low-NOx Engines. In order to be eligible for the certification flexibility in section 2208.1, subdivision (b), the NOx emission level to which an engine is certified in a given MY must be lower (i.e., more stringent) than the engine's mandatory NOx emission standard for the given MY. Generation of NOx emission reduction credits and averaging, banking, or trading of NOx emission reductions achieved by any such engine is prohibited under any regulation if such engine receives the certification flexibility in section 2208.1, subdivision (b).

(B) Hybrid Engines. In order to be eligible for the certification flexibility in section 2208.1, subdivision (c), the CO2 emission level to which an engine family is certified in a given MY must be lower than the engine's mandatory CO2 emission standard for the given MY. Any CO2 emission reduction credits generated as a result of receiving the certification flexibility in section 2208.1, subdivision (c) must be immediately retired. Generation of CO2 emission reduction credits and averaging, banking, or trading of CO2 emission reductions achieved by any such engine is prohibited under any regulation if such engine receives certification flexibility pursuant to section 2208.1, subdivision (c).

(C) High-Efficiency Engines. Generation of CO2 emission reduction credits and averaging, banking, or trading of CO2 emission reductions achieved by an engine family meeting the optional low-CO2 emission standard are prohibited if the engine family receives certification flexibility pursuant to section 2208.1, subdivision (d).

(D) Notwithstanding any other provision, including the sunset dates set forth in section 2208.1, subdivision (b)(1), (c)(1), or (d)(1), eligibility of an engine family for the provisions of section 2208.1, subdivision (b)(2), (b)(3), or (c)(2) in a given MY sunsets if the emission levels to which the engine family is certified are no longer more stringent than the mandatory new engine standard for the given MY due to adoption of a rule, regulation, or other air quality mandate.

(b) Certification Flexibility for Early Market Introduction of Low-NOx Engines.

(1) Eligibility.
(A) Spark-ignition Low-NOx Engines. Through the 2021 MY, an engine manufacturer shall be eligible to apply for certification of a heavy-duty spark-ignition engine family meeting the 0.05 or 0.02 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1, subdivision (b)(2), for a maximum of three consecutive MYs, beginning with the MY in which the engine manufacturer first certifies any spark-ignition engine family pursuant to the provisions of section 2208.1, subdivision (b)(2) or (b)(3).

(B) Compression-ignition Low-NOx Engines. Through the 2024 MY, an engine manufacturer shall be eligible to apply for certification of a heavy-duty compression-ignition engine family meeting the 0.10, 0.05 or 0.02 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1, subdivision (b)(2), with the following restrictions:
1. An engine manufacturer is eligible to apply for certification of a compression-ignition engine family meeting the 0.10 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1, subdivision (b)(2) for a maximum of three consecutive MYs, beginning with the MY in which the manufacturer first certifies any low-NOx compression-ignition engine family meeting the 0.10 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1.

2. An engine manufacturer is eligible to apply for certification of a compression-ignition engine family meeting the 0.05 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1, subdivision (b)(2) for a maximum of three consecutive MYs, beginning with the MY in which the manufacturer first certifies any low-NOx compression-ignition engine family meeting the 0.05 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1.

3. An engine manufacturer is eligible to apply for certification of a compression-ignition engine family meeting the 0.02 g/bhp-hr NOx emission standard pursuant the provisions of section 2208.1, subdivision (b)(2) for a maximum of three consecutive MYs, beginning with the MY in which the manufacturer first certifies any low-NOx compression-ignition engine family meeting the 0.02 g/bhp-hr NOx emission standard pursuant to the provisions of section 2208.1.

(2) Low-NOx Engines: Certification Flexibility Provisions. A low-NOx engine family for which an engine manufacturer has demonstrated eligibility and compliance pursuant to section 2208.1, subdivisions (a) and (b)(1) is eligible for the flexibility in section 2208.1, subdivisions (b)(2)(A) and (b)(2)(B) when certified by ARB to meet the criteria pollutant heavy-duty engine emission standards.
(A) If so requested by the engine manufacturer, the Executive Officer shall provide an engine family with an assigned deterioration factor (DF) that may be used in lieu of intermediate or high-mileage emission tests to determine compliance with applicable emission standards. The assigned DF shall be determined and prescribed based on design specifications or sufficient control over design specifications, development data, in-house testing procedures, and in-use experience, and in consideration of assigned DFs for similar engine families published in the United States Environmental Protection Agency (U.S. EPA) National Vehicle and Fuel Emissions Laboratory guidance letter CD-12-07 (Revised), dated March 30, 2012, which is hereby incorporated by reference herein. Alternately, a manufacturer may propose an assigned DF. In proposing a DF, the manufacturer must demonstrate, using test data, that the proposed DF is appropriate for use in determining compliance with the applicable emission standards. All such demonstrations must be approved in advance by the Executive Officer. The Executive Officer shall base his or her determination upon all information submitted by a manufacturer, and upon good engineering judgment.

(B) OBD System Requirements. All heavy-duty engines and vehicles are required to comply with California Code of Regulations, title 13, sections 1971.1 and 1971.5, except for the allowances described in section 2208.1, subdivisions (b)(2)(B)1. through 4., below.
1. OBD System Demonstration. A manufacturer is allowed to exclude up to three low-NOx engine families per MY from the calculation of a manufacturer's total number of engine families for the purposes of California Code of Regulations, title 13, section 1971.1, subdivision (i)(2.2.3).

2. Production Engine Evaluation Testing. For production evaluation testing of low-NOx engine families described in California Code of Regulations, title 13, section 1971.1, subdivisions (l)(1) through (3), a manufacturer must collect and report the data to ARB, in a format approved by the Executive Officer, within twelve months after the production vehicles are first introduced into commerce.
a. Verification of Standardized Requirements. In lieu of the test vehicle selection criteria specified in California Code of Regulations, title 13, section 1971.1, subdivisions (l)(1.2.1) through (1.2.3), the manufacturer must test up to five unique production vehicles within a low-NOx engine family.

b. Verification and Reporting of In-use Monitoring Performance. For testing described in California Code of Regulations, title 13, section 1971.1, subdivision (l)(3), manufacturers must submit a plan, in a format approved by the Executive Officer, to the Executive Officer, for review and approval, that details the types and number of production vehicles to be tested, the sampling method, the data collection timeline, and the reporting format. The Executive Officer may approve such plan upon determining that:
i) it provides for effective collection of data from a sample of vehicles that, at a minimum, represents ten percent of the total vehicles produced for sale in California per monitoring performance group;

ii) it will likely result in the collection and submittal of data within the required time frame;

iii) it will generate data that are representative of California drivers and exhaust temperatures; and

iv) it does not, by design, exclude or include specific vehicles in an attempt to collect data only from vehicles with the highest in-use performance ratios.

3. Calculation of Fines for Deficiencies. Up to four allowable deficiencies related to monitoring of a technology needed to meet an engine's low-NOx emission standard shall be excluded from the calculation of allowable deficiencies per low-NOx engine family for the purposes of determining the number of deficiencies subject to fines under California Code of Regulations, title 13, section 1971.1, subdivision (k)(2).

4. Ordered Remedial Action-Mandatory Recall for Emission Thresholds. In lieu of the recall thresholds in California Code of Regulations, title 13, section 1971.5, subdivision (d)(3)(A)(ii), the recall threshold for major monitors to indicate a malfunction shall be three times the applicable major monitor malfunction criterion. For example, if the malfunction criterion is 2.5 times the applicable standard, recall would be required when emissions exceed 7.5 times the applicable standard, or if the malfunction criterion is the particulate matter (PM) emission standard plus 0.02 g/bhp-hr, and the PM emission standard is 0.01 g/bhp-hr, recall would be required when emissions exceed 0.09 g/bhp-hr.

(3) Multiple Low-NOx Engine Option.
(A) An engine manufacturer may apply for certification flexibility pursuant to section 2208.1, subdivision (b)(3) for two low-NOx engine families that would otherwise have been eligible for the provisions of section 2208.1, subdivision (b)(2) in a given MY. One of these two engine families must meet all criteria and requirements for an "early compliance" engine family, and the other engine family must meet all criteria and requirements for an "enhanced flexibility" engine family, as set forth in section 2208.1, subdivision (b)(3).
1. Both the "early compliance" and "enhanced flexibility" engine families must meet this regulation's eligibility criteria and requirements described in section 2208.1, subdivision (a).

2. Neither the "early compliance" nor the "enhanced flexibility" engine family may be functionally equivalent to (i.e., of the same power rating and intended service class, utilizing the same fuel and emission control system, and meeting the same durability requirements and emission standards) an engine family from the same engine manufacturer that has received the certification flexibility identified in section 2208.1, subdivision (b)(2) or (b)(3) in any previous MY.

3. An engine family that is functionally equivalent to (i.e., of the same power rating and intended service class, utilizing the same fuel and emission control system, and meeting the same durability requirements and emission standards), and from the same engine manufacturer as, an engine family that received the certification flexibility identified in section 2208.1, subdivision (b)(3) is ineligible for the provisions of section 2208.1, subdivision (b)(2).

(B) For three consecutive MYs, beginning with the first MY for which they are certified by ARB, any NOx credit generated by an "early compliance" engine family, "enhanced flexibility" engine family, and any of their functionally-equivalent engine families (i.e., engine families of the same power rating and intended service class, utilizing the same fuel and emission control system, and meeting the same durability requirements and emission standards) must be immediately retired. Generation of emission reduction credits or averaging, banking, or trading of NOx emission reductions achieved by these engine families during this time period is prohibited under any regulation.

(C) Upon a determination by the Executive Officer that all criteria and requirements set forth in section 2208.1, subdivision (b)(3) are met, the "enhanced flexibility" engine family is exempt from meeting emission threshold monitoring requirements identified in California Code of Regulations, title 13, section 1971.1, subdivisions (e) through (f) for one MY. Such engine family must comply with engine labeling requirements of section 2208.1, subdivision (c)(2)(A)3.

(D) A 2020 and subsequent MY spark-ignition engine family and 2023 and subsequent MY compression-ignition engine family are ineligible for the provisions of section 2208.1, subdivision (b)(3)(C).

(c) Certification Flexibility for Early Market Introduction of Heavy-Duty Hybrids.

(1) Eligibility.
(A) Hybrids that achieve less than 35 miles AER.
1. Tier 1: A manufacturer of a hybrid engine family that is to be installed in a vehicle that does not achieve at least 35 miles AER shall be eligible to apply for certification of such an engine family pursuant to the provisions of section 2208.1, subdivision (c)(2)(A) for a maximum of two consecutive MYs, or through the 2021 MY, whichever comes first.

2. Tier 2: A manufacturer of a hybrid engine family that is to be installed in a vehicle that does not achieve at least 35 miles AER shall be eligible to apply for certification of such an engine family pursuant to the provisions of section 2208.1, subdivision (c)(2)(B) for a maximum of two consecutive MYs subsequent to the two MYs in which the engine manufacturer receives Tier 1 flexibility, or through the 2021 MY, whichever comes first.

3. A hybrid engine family that is to be installed in a transit bus that does not achieve at least 35 miles AER shall be ineligible for the provisions of section 2208.1, subdivision (c)(2).

(B) Hybrids that achieve at least 35 miles AER.
1. Tier 1: A manufacturer of a hybrid engine family that is to be installed in a vehicle that does achieve at least 35 miles AER shall be eligible to apply for certification of such an engine family pursuant to the provisions of section 2208.1, subdivision (c)(2)(A) for up to four consecutive MYs, or through the 2024 MY, whichever comes first.

2. Tier 2: A manufacturer of a hybrid engine family that is to be installed in a vehicle that does achieve at least 35 miles AER shall be eligible to apply for certification of such an engine family pursuant to the provisions of section 2208.1, subdivision (c)(2)(B) for up to two consecutive MYs subsequent to the four MYs in which the engine manufacturer receives Tier 1 flexibility, or through the 2024 MY, whichever comes first.

(C) To be eligible for the provisions of section 2208.1, subdivision (c)(2)(A) or (c)(2)(B), a hybrid engine family must demonstrate no increase in NOx, hydrocarbon (HC), or carbon monoxide (CO) emissions, and at least a ten percent reduction in CO2 emissions, pursuant to section 7 of the "California Certification and Installation Procedures for Medium- and Heavy-Duty Vehicle Hybrid Conversion Systems," or be installed in a heavy-duty hybrid vehicle that is certified pursuant to the "California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric and Other Hybrid Vehicles, in the Urban Bus and Heavy-Duty Vehicle Classes," as amended October 21, 2014, which is hereby incorporated by reference herein.

(2) ITR Hybrid Technology Certification Provisions.
(A) Tier 1 Provisions.
1. An engine family certified pursuant to the provisions of section 2208.1, subdivision (c)(2)(A) shall be eligible for the provisions of section 2208.1, subdivision (b)(2)(A).

2. Diagnostic System Requirements. An engine family certified pursuant to the provisions of section 2208.1, subdivision (c)(2)(A) may implement an Engine Manufacturer Diagnostic (EMD) system that meets the requirements described in California Code of Regulations, title 13, section 1971.1, subdivision (d)(7.1.4).
a. Anti-Backsliding Provisions. An engine family is not eligible to implement an EMD system that meets the requirements described in California Code of Regulations, title 13, section 1971.1, subdivision (d)(7.1.4), if a functionally equivalent engine family (i.e., of the same power rating and intended service class, utilizing the same fuel and emission control system, and meeting the same durability requirements and emission standards) from the same engine manufacturer complies with, or has previously demonstrated compliance with, the heavy-duty OBD requirements of California Code of Regulations, title 13, section 1971.1, when certified by ARB or the U.S. EPA.

b. Through the 2020 MY, an engine family that is ineligible for the provisions of section 2208.1, subdivision (c)(2)(A)2. because of the exclusion identified in section 2208.1, subdivision (c)(2)(A)2.a. shall not be subject to fines set forth in California Code of Regulations, title 13, section 1971.1, subdivisions (k)(2) and (k)(3) for any deficiencies that are specifically associated with the engine's integration into the hybrid vehicle.

c. Through the 2020 MY, an engine family that is ineligible for the provisions of section 2208.1, subdivision (c)(2)(A)2. because of the exclusion identified in section 2208.1, subdivision (c)(2)(A)2.a. is exempt from the requirements of California Code of Regulations, title 13, section 1971.1, subdivision (k)(4).

3. Labeling Requirements. An engine belonging to an engine family certified pursuant to section 2208.1, subdivision (c)(2)(A) must be clearly and permanently labeled with the following language in a location where it can be seen by a person viewing the Engine Emission Control Information Label. In cases where this label may not be visible with the engine installed in the vehicle, a duplicate label shall be applied to the vehicle next to the Vehicle Emissions Control Information Label saying the following:

This engine has received certification flexibility from the California Air Resources Board because it is classified as an innovative technology pursuant to California Code of Regulations, title 13, sections 2208 and 2208.1, and may be subject to alternate diagnostic requirements pursuant to California Code of Regulations, title 13, section 2208.1. <insert the engine's applicable ARB Executive Order number here >

a. The label must be affixed in a permanent manner that is designed to withstand, for the engine's useful life, environmental conditions in the area where the label is attached. Enviornmental conditions must include, but are not limited to, exposure to engine fuels, lubricants, and coolants.

(B) Tier 2 Provisions.
1. An engine family certified pursuant to the provisions of section 2208.1, subdivision (c)(2)(B) shall be eligible for the provisions of section 2208.1, subdivision (b)(2)(A).

2. OBD System Requirements. An engine family certified pursuant to the provisions of section 2208.1, subdivision (c)(2)(B) must implement an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5, except for the differences described in section 2208.1, subdivisions (c)(2)(B)2.a. through c., below.
a. OBD System Demonstration.
i. Each manufacturer is allowed to exclude up to one hybrid engine family per model year from the calculation of the manufacturer's total number of engine families for the purposes of California Code of Regulations, title 13, section 1971.1, subdivision (i)(2.2.3).

ii. Except as provided in section 2208.1, subdivision (c)(2)(B)2.a.iii., below, a hybrid engine that has been previously certified as a base engine to the full heavy-duty OBD system monitoring requirements of California Code of Regulations, title 13, section 1971.1 is exempt from the OBD system demonstration testing requirements of California Code of Regulations, title 13, section 1971.1, subdivision (i)(3), as long as the hybrid engine is certified to the same standard as the base engine.

iii. Any modifications that are made to a previously certified heavy-duty OBD or OBD II engine or OBD system shall invalidate that engine's eligibility for the OBD system demonstration testing exemptions described in section 2208.1, subdivision (c)(2)(B)2.a.ii. The manufacturer may request that the Executive Officer exempt it from demonstration testing monitors that are not impacted by the modifications. The Executive Officer may approve the exemption based on review of data and/or analysis submitted by the manufacturer that demonstrates that the originally calibrated emission thresholds are unaffected.

b. Production Engine Evaluation Testing. For production evaluation testing described in California Code of Regulations, title 13, section 1971.1, subdivisions (l)(1) through (3), a manufacturer must collect and report the data to ARB, in a format to be approved by the Executive Officer, within twelve months after the production vehicles are first introduced into commerce.
i. Verification of Standardized Requirements: In lieu of the test vehicle selection criteria specified in California Code of Regulations, title 13, section 1971.1, subdivisions (l)(1.2.1) through (1.2.3) for heavy-duty engines, the manufacturer must test up to five unique production vehicles within a hybrid engine family.

ii. Verification and Reporting of In-use Monitoring Performance. For testing described in California Code of Regulations, title 13, section 1971.1, subdivision (l)(3), manufacturers must submit a plan, in a format to be approved by the Executive Officer, to the Executive Officer, for review and approval, that details the types and number of production vehicles to be tested, the sampling method, the data collection timeline, and the reporting format. The Executive Officer may approve the plan upon determining that:
A. it provides for effective collection of data from a sample of vehicles that, at a minimum, represents ten percent of the total vehicles produced for sale in California per monitoring performance group;

B. it will likely result in the collection and submittal of data within the required time frame;

C. it will generate data that are representative of California drivers and exhaust temperatures; and

D. it does not, by design, exclude or include specific vehicles in an attempt to collect data only from vehicles with the highest in-use performance ratios.

c. Calculation of Fines for Deficiencies. Up to three allowable deficiencies related to issues with the implementation of the hybrid system shall be excluded from the calculation of allowable deficiencies per hybrid engine family for the purposes of determining the number of deficiencies subject to fines under California Code of Regulations, title 13, section 1971.1, subdivision (k)(2).

(3) Dual Executive Order.
(A) For the 2017 through 2020 MYs, both the engine, microturbine, or fuel cell manufacturer and the hybrid driveline manufacturer shall be eligible, if so requested by both parties, to be identified on a "dual" Executive Order as the parties jointly responsible for complying with the terms of the "dual" Executive Order.

(B) For the 2021 through 2024 MYs, both the engine, microturbine, or fuel cell manufacturer and the hybrid drive manufacturer shall be eligible, if so requested by both parties, to be identified on a "dual" Executive Order as the parties jointly responsible for complying with the terms of the "dual" Executive Order, but only if the hybrid vehicle or chassis in which they are installed demonstrates no increase in NOx, CO, or HC emissions pursuant to section 7 of the "California Certification and Installation Procedures for Medium- and Heavy-Duty Vehicle Hybrid Conversion Systems."

(C) For 2025 and subsequent MYs, a single Executive Order shall be granted for each engine family and hybrid drive system combination, which shall identify a single entity as the party solely responsible for complying with the terms of the Executive Order.

(D) An engine family receiving a "dual" Executive Order pursuant to section 2208.1, subdivision (c)(3), but that is not certified pursuant to section 2208.1, subdivision (c)(2)(A) or (c)(2)(B), shall be exempt from the requirements of section 2208.1, subdivision (a)(2)(B).

(E) Notwithstanding the provisions of section 2208.1, subdivisions (c)(3)(A) and (c)(3)(B), ARB reserves the right not to issue a "dual" Executive Order in a given MY, if U.S. EPA has issued a Certificate of Conformity for the same engine, microturbine, or fuel cell and hybrid drivetrain combination, that identifies one party as solely responsible for complying with the terms of the Certificate of Conformity.

(4) Alternate Emission Standards for Heavy-Duty Hybrids with at Least 35 Miles AER.

An engine family that meets the requirements of section 2208.1, subdivision (c)(4)(A) shall be eligible to be certified to alternate heavy-duty engine emission standards, pursuant to section 2208.1, subdivisions (c)(4)(B) and (c)(4)(C), through the 2024 MY.

(A) Eligibility Criteria. The engine family must:
1. be installed in a vehicle capable of achieving at least 35 miles AER;

2. be electronically-controlled with a fully functional electronic control module (ECM);

3. not be mechanically connected to the drivetrain, and not be capable of directly propelling the vehicle in which it is installed;

4. be a newly manufactured engine;

5. utilize a diesel particulate filter, if a diesel engine; and

6. be installed in a heavy-duty hybrid vehicle that complies with heavy-duty vehicle evaporative emission standards pursuant to California Code of Regulations, title 13, section 1976, if applicable, and has been demonstrated not to increase NOx emissions relative to the applicable non-hybrid baseline vehicle pursuant to section D of the "California Interim Certification Procedures for 2004 and Subsequent Model Hybrid-Electric and Other Hybrid Vehicles, in the Urban Bus and Heavy-Duty Vehicle Classes."

(B) Requirements for Off-Road-Equivalent Engines. An engine meeting the requirements of section 2208.1, subdivision (c)(4)(A) that is identical to one that is certified under California Code of Regulations, title 13, section 2403, 2423, or 2433 is eligible to be certified pursuant to section 2208.1, subdivision (c)(4)(B) for use in a heavy-duty hybrid vehicle. For such engines, the requirements in section 2208.1, subdivisions (c)(4)(B)1. through 5. apply.
1. The engines must be of a configuration that is identical to one that is certified under California Code of Regulations, title 13, section 2403, 2423, or 2433.

2. ARB will treat engines certified pursuant to section 2208.1, subdivision (c)(4)(B) as off-road engines for compliance purposes, including selective enforcement audits, in-use testing, defect reporting, and recall. The engines must meet all the requirements that apply under California Code of Regulations, title 13, section 2403, 2423, or 2433, as applicable, instead of the comparable requirements of California Code of Regulations, title 13, section 1956.8, with the following exceptions:
a. The engine must demonstrate compliance with the useful life requirements applicable to the heavy-duty vehicle class in which it will be installed, as identified in Title 40, Code of Federal Regulations, Part 86, Section 86.004-2, as amended August 8, 2014, which is hereby incorporated by reference herein; and

b. The engine must include a warranty that covers the minimum warranty period for the original off-road engine certification, but that shall cover the engine when operated and properly maintained as intended in the on-road heavy-duty vehicle. The owner's manual for the engine or for the vehicle in which the engine shall be installed must include a listing of any required service and service intervals and recommended maintenance practices for the engine when used in the intended on-road heavy-duty vehicle application.

c. Diagnostic Requirements.
i. Tier 1: An engine family certified pursuant to section 2208.1, subdivision (c)(4)(B) may meet the OBD requirements of section 2208.1, subdivision (c)(2)(A)2. instead of implementing an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5. A vehicle manufacturer may sell in California or produce for California sale a maximum of 100 vehicles utilizing such engines per MY.

ii. Tier 2: An engine family certified pursuant to section 2208.1, subdivision (c)(4)(B) may meet the OBD requirements of section 2208.1, subdivision (c)(2)(B)2., instead of implementing an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5. A vehicle manufacturer may not sell in California or produce for California sale more than 200 vehicles utilizing such engines, or engines that meet the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5, per MY.

iii. A vehicle manufacturer may utilize engines meeting the OBD requirements of section 2208.1, subdivision (c)(2)(A)2. or (c)(2)(B)2. for up to six total MYs, with engines meeting the OBD requirements of section 2208.1, subdivision (c)(2)(A)2. for no more than four of the six MYs. After this period of up to six MYs, a vehicle manufacturer must utilize engines meeting heavy-duty OBD requirements of California Code of Regulations, title 13, sections 1971.1 and 1971.5.

3. The engine must meet the most stringent applicable off-road engine NOx and PM emission standards for its MY, size, and classification, and may not participate in emission averaging, banking, or trading programs.

4. Before shipping engines certified under section 2208.1, subdivision (c)(4)(B), an engine manufacturer must have written assurances from the hybrid vehicle manufacturer that the hybrid vehicle manufacturer needs a certain number of exempted engines under section 2208.1, subdivision (c)(4)(B).

5. The engine must meet the following engine labeling requirements:
a. An engine that is of a configuration that is identical to one that is certified under California Code of Regulations, title 13, sections 2403, 2423, or 2433 must meet the applicable labeling requirements of California Code of Regulations, title 13, sections 2404, 2424, or 2434, respectively, but may not have any label identifying it as an off-road engine; and

b. The engine must include a label that meets the requirements of section 2208.1, subdivision (c)(2)(A)3.

(C) Requirements for Light- or Medium-Duty Equivalent Engines. An engine meeting the requirements of section 2208.1, subdivision (c)(4)(A) that is of a configuration that is identical to one installed in a light- or medium-duty vehicle certified pursuant to California Code of Regulations, title 13, section 1961 or 1961.2 is eligible to be certified pursuant to section 2208.1, subdivision (c)(4)(C) for use on a heavy-duty hybrid vehicle. For such engines, the requirements in section 2208.1, subdivision (c)(4)(C)1. through 4. apply.
1. The engine, including its emission control system, must be of a configuration that is identical to one installed in a light- or medium-duty vehicle that is certified pursuant to California Code of Regulations, title 13, section 1961 or 1961.2.

2. ARB will treat engines certified pursuant to section 2208.1, subdivision (c)(4)(C) as light- and medium-duty engines for compliance purposes, such as selective enforcement audits, in-use testing, defect reporting, and recall. The engine must meet all the requirements that apply under California Code of Regulations, title 13, section 1961 or 1961.2, as applicable, instead of the comparable requirements of California Code of Regulations, title 13, section 1956.8, with the following exceptions:
a. The engine must demonstrate compliance with the useful life requirements applicable to the heavy-duty vehicle class in which it will be installed, as identified in Title 40, Code of Federal Regulations, Part 86, Section 86.004-2; and

b. The engine must include a warranty that covers the minimum warranty period for the original light- or medium-duty engine, but that shall cover the engine when operated and properly maintained as intended in the on-road heavy-duty vehicle. The owner's manual for the engine or for the vehicle in which the engine shall be installed must include a listing of any required service and service intervals and recommended maintenance practices for the engine when used in the intended on-road heavy-duty vehicle application.

c. Diagnostic Requirements.
i. Tier 1: An engine family certified pursuant to section 2208.1, subdivision (c)(4)(C) may meet the OBD requirements of section 2208.1, subdivision (c)(2)(A)2. instead of implementing an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5. A vehicle manufacturer may sell in California or produce for California sale a maximum of 100 vehicles utilizing such engines per MY.

ii. Tier 2: An engine family certified pursuant to section 2208.1, subdivision (c)(4)(C) may meet the OBD requirements of section 2208.1, subdivision (c)(2)(B)2. instead of implementing an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5. A vehicle manufacturer may not sell in California or produce for California sale more than 200 vehicles utilizing such engines, or engines that implement an OBD system that meets the requirements described in California Code of Regulations, title 13, sections 1971.1 and 1971.5, per MY.

iii. A vehicle manufacturer may utilize engines meeting the OBD requirements of section 2208.1, subdivisions (c)(2)(A)2. or (c)(2)(B)2. for up to six total MYs, with engines meeting the OBD requirements of section 2208.1, subdivisions (c)(2)(A)2. for no more than four of the six MYs. After this period of up to six MYs, a vehicle manufacturer must utilize engines meeting heavy-duty OBD requirements of California Code of Regulations, title 13, sections 1971.1 and 1971.5.

3. Before shipping engines certified under section 2208.1, subdivision (c)(4)(C), manufacturer of such engines must have written assurances from the hybrid vehicle manufacturer that the hybrid vehicle manufacturer needs a certain number of exempted engines under section 2208.1, subdivision (c)(4)(C).

4. The engine must meet the following engine labeling requirements:
a. The engine must meet the requirements of California Code of Regulations, title 13, section 1965, and may not have any label identifying it as a light- or medium-duty engine; and

b. The engine must include a label that meets the requirements of section 2208.1, subdivision (c)(2)(A)3.

(D) Data Collection and Reporting. For each engine that is certified pursuant to section 2208.1, subdivision (c)(4), the manufacturer of any vehicle in which such engine is installed, must collect the data in section 2208.1, subdivision (c)(4)(D)1. on a second-by-second interval for a minimum of three calendar years from the time that the engine or vehicle is first deployed in a California fleet.
1. The manufacturer must present the following data as the average calculated from all of the manufacturer's vehicles certified pursuant to section 2208.1, subdivision (c)(4); must include a histogram distribution of such data (at ten percent intervals); and must organize the data by calendar year and engine family and drivetrain combination.
a. Total miles traveled;

b. Daily miles traveled (miles/day);

c. Speed without idle (miles/hour);

d. Percent time operating in the following mile per hour intervals: (0+ to 10; 10+ to 20; 20+ to 30; 30+ to 40; 40+ to 50; 50+ to 60; 60+);

e. Fuel economy (miles/gallon);

f. Percent zero-emission operation (plug-in vehicles only); and

g. Miles of continuous zero-emission operation from full charge to when the engine turns on (plug-in vehicles only).

2. When applying for certification of a heavy-duty engine pursuant to section 2208.1, subdivision (c)(4), a vehicle manufacturer must provide the data identified in section 2208.1, subdivision (c)(4)(D)1. for all its hybrid vehicles that utilize engines certified pursuant to section 2208.1, subdivision (c)(4) within the three previous MYs, if so requested by the Executive Officer. Such data must be up to date as of no more than 90 days prior to the hybrid vehicle's certification application date. The manufacturer must also provide all raw data supporting the data summaries to the Executive Officer, in a format approved by the Executive Officer, within thirty days, upon ARB request.

3. The vehicle manufacturer shall keep all records related to warranty-related engine and vehicle maintenance and repair that occur during the first three years a vehicle that utilizes an engine certified pursuant to section 2208.1(c)(4) is in service, including description and cost of repairs, and number of days the vehicle is out of service for said maintenance and repairs. The vehicle manufacturer shall keep such records for each vehicle for a minimum of five years from the date the vehicle is entered into service, and shall provide this information to ARB, in a format approved by the Executive Officer, within thirty days, upon ARB request.

(d) High-Efficiency Heavy-Duty Engine.

(1) Eligibility and Certification Flexibility. A manufacturer shall be eligible, when applying for certification of an engine family to the optional low-CO2 emission standards pursuant to California Code of Regulations, title 13, section 1956.8, subdivisions (a)(7)(A) and (c)(4)(A)1., for the provisions of section 2208.1, subdivision (c)(2)(A) or (c)(2)(B) for up to six consecutive MYs, through the 2027 MY, beginning with a maximum of up to four MYs eligibility for the provisions of section 2208.1, subdivision (c)(2)(A).
(A) For a high-efficiency heavy-duty engine eligible for the provisions of section 2208.1, subdivision (c)(2)(B)2.c., the three additional allowable deficiencies excluded from the calculation of allowable deficiencies subject to fines must be related to achievement of the optional low-CO2 emission standards identified in California Code of Regulations, title 13, section 1956.8, subdivisions (a)(7)(A) and (c)(4)(A)1.

(B) A hybrid engine certified to the optional low-CO2 emission standards pursuant to California Code of Regulations, title 13, section 1956.8, subdivision (a)(7)(A) or (c)(4)(A)1. shall be ineligible for certification pursuant to the provisions of section 2208.1, subdivision (d).

(2) Allowable Sales Volumes.
(A) A manufacturer may not produce or sell more than 100 engines certified to the optional low-CO2 emission standards that receive certification flexibility pursuant to section 2208.1, subdivision (c)(2)(A) per MY.

(B) A manufacturer may not produce or sell more than 200 engines certified to the Optional Low-CO2 Emission Standards that receive certification flexibility pursuant to section 2208.1, subdivision (c)(2)(B) per MY.

1. New section filed 10-16-2017; operative 10-16-2017 pursuant to Government Code section 11343.4(b)(3) (Register 2017, No. 42).

Note: Authority cited: Sections 38510, 38560, 39500, 39515, 39516, 39600, 39601, 43004, 43006, 43008.6, 43009.5, 43011, 43012, 43100, 43101, 43102, 43105, 43106, 43204, 43205, 43205.5 and 43806, Health and Safety Code; and Sections 27156 and 38391, Vehicle Code. Reference: Sections 38501, 39002, 39003, 39602.5, 39667, 43000, 43010, 43101.5 and 43018, Health and Safety Code.

Disclaimer: These regulations may not be the most recent version. California may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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