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Code of Federal Regulations Title 40. Protection of Environment § 40.1036.501 How do I run a valid emission test?

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Use the equipment and procedures specified in this subpart and 40 CFR 86.1305 to determine whether engines meet the emission standards in § 1036.108.

(b) You may use special or alternate procedures to the extent we allow them under 40 CFR 1065.10.

(c) This subpart is addressed to you as a manufacturer, but it applies equally to anyone who does testing for you, and to us when we perform testing to determine if your engines meet emission standards.

(d) For engines that use aftertreatment technology with infrequent regeneration events, apply infrequent regeneration adjustment factors as described in § 1036.530.

(e) Test hybrid engines as described in § 1036.525 and 40 CFR part 1065.

(f) Determine engine fuel maps as described in § 1036.510(b).

(g) The following additional provisions apply for testing to demonstrate compliance with the emission standards in § 1036.108 for model year 2016 through 2020 engines:

(1) Measure CO2, CH4, and N2O emissions using the transient cycle specified in either 40 CFR 86.1333 or § 1036.510.

(2) For engines subject to SET testing under § 1036.108(a)(1), measure CO2 emissions using the SET specified in 40 CFR 86.1362.

(h) The following additional provisions apply for testing to demonstrate compliance with the emission standards in § 1036.108 for model year 2021 and later engines:

(1) If your engine is intended for installation in a vehicle equipped with stop-start technology, you may turn the engine off during the idle portions of the duty cycle to represent in-use operation, consistent with good engineering judgment. We recommend installing an engine starter motor and allowing the engine's Electronic Control Unit (ECU) to control the engine stop and start events.

(2) For engines subject to SET testing under § 1036.108(a)(1), use one of the following methods to measure CO2 emissions:

(i) Use the SET duty cycle specified in § 1036.505 using either continuous or batch sampling.

(ii) Measure CO2 emissions over the SET duty cycle specified in 40 CFR 86.1362 using continuous sampling. Integrate the test results by mode to establish separate emission rates for each mode (including the transition following each mode, as applicable). Apply the CO2 weighting factors specified in 40 CFR 86.1362 to calculate a composite emission result.

(3) Measure CO2, CH4, and N2O emissions over the transient cycle specified in either 40 CFR 86.1333 or § 1036.510.

(4) Measure or calculate emissions of criteria pollutants corresponding to your measurements to demonstrate compliance with CO2 standards in subpart B of this part. These test results are not subject to the duty-cycle standards of 40 CFR part 86, subpart A.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.1036.501 How do I run a valid emission test? - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-1036-501/

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