CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 80—REGULATION OF FUELS AND FUEL ADDITIVES > SUBPART D—Reformulated Gasoline (§80.40 to §80.85-80.89) > 80.51—Vehicle test procedures.

80.51—Vehicle test procedures.

The test sequence applicable when augmenting the emission models through vehicle testing is as follows:
(a) Prepare vehicles per § 80.50.
(b) Initial preconditioning per § 80.52(a)(1). Vehicles shall be refueled randomly with the fuels required in § 80.49 when testing to augment the complex emission model.
(c) Exhaust emissions tests, dynamometer procedure per 40 CFR 86.137-90 with:
(1) Exhaust Benzene and 1,3-Butadiene emissions measured per § 80.55; and
(2) Formaldehyde and Acetelaldehyde emissions measured per § 80.56.