§1065.5. Overview of this part 1065 and its relationship to the standard-setting part. — Inbound Citations

(e) Measure CO2, N2O, and CH4 as described in this paragraph (e) with each zero kilometer certification test (if one is conducted) and with each test conducted at the applicable minimum test distance as defined in § 86.427-78. Use the analytical equipment and procedures specified in 40 CFR part 1065 as needed to measure N2O and CH4. Report these values in your application for certification. The requirements of this paragraph (e) apply starting with model year 2011 for CO2 and 2012 for CH4. The requirements of this paragraph (e) related to N2O emissions apply for engine families that depend on NOX aftertreatment to meet emission standards starting with model year 2013. Small-volume manufacturers (as defined in § 86.410-2006(e)) may omit measurement of N2O and CH4; other manufacturers may provide appropriate data and/or information and omit measurement of N2O and CH4 as described in 40 CFR 1065.5. Use the same measurement methods as for your other results to report a single value for CO2, N2O, and CH4. Round the final values as follows:

(2) Round N2O to the nearest 0.001 g/km.

(3) Round CH4 to the nearest 0.001 g/km.

(i) Measure CO2 and CH4 with each low-hour certification test using the procedures specified in 40 CFR part 1065 starting in the 2011 and 2012 model years, respectively. Also measure N2O with each low-hour certification test using the analytical equipment and procedures specified in 40 CFR part 1065 starting in the 2013 model year for any engine family that depends on NOx aftertreatment to meet emission standards. Small-volume manufacturers may omit measurement of N2O and CH4; other manufacturers may provide appropriate data and/or information and omit measurement of N2O and CH4 as described in 40 CFR 1065.5. Use the same units and modal calculations as for your other results to report a single weighted value for each constituent. Round the final values as follows:

(2) Round N2O to the nearest 0.001 g/kW-hr or 0.001 g/km, as appropriate.

(3) Round CH4 to the nearest 0.001 g/kW-hr or 0.001 g/km, as appropriate.

(3) Which exhaust constituents do I need to measure? Measure all exhaust constituents that are subject to emission standards, any other exhaust constituents needed for calculating emission rates, and any additional exhaust constituents as specified in the standard-setting part. See 40 CFR 1065.5 regarding requests to omit measurement of N2O and CH4 for vehicles not subject to an N2O or CH4 emission standard.