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.

(1) Exhaust Benzene and 1,3-Butadiene emissions measured per § 80.55; and

(2) Formaldehyde and Acetelaldehyde emissions measured per § 80.56.

CFR

80.51—Vehicle test procedures.