§34.48. Derivative engines for emissions certification purposes. — Inbound Citations

As used in this part, all terms not defined herein shall have the meaning given them in the Clean Air Act, as amended (42 U.S.C. 7401 et. seq.):

(1) If the engine qualifies as a derivative engine in accordance with § 34.48 of this part, no testing is required for the engine to use the same nvPM certificated parameters (nvPMmass, nvPMnum, and maximum nvPMMC) as the engine it is derived from; or