CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES > SUBPART B—Emission Regulations for 1977 and Later Model Year New Light-Duty Vehicles and New Light-Duty Trucks and New Otto-Cycle Complete Heavy-Duty Vehicles; Test Procedures (§86.101 to > 86.151-98—General requirements; refueling test.

86.151-98—General requirements; refueling test.

(a) The refueling emissions procedure, shown in Figure B98-12, starts with the stabilizing of the vehicle and the loading of the refueling emissions canister(s) to breakthrough, and continues with the vehicle drive for purging of the canister, followed by the refueling emissions measurement. The test is conducted following §§ 86.152-98 through 86.154-98 in order.
(b) Ambient temperature levels encountered by the test vehicle throughout the test sequence shall not be less than 68 °F (20 °C) nor more than 86 °F (30 °C).
(c) The vehicle shall be approximately level during all phases of the test sequence to prevent abnormal fuel distribution.

Code of Federal Regulations

Code of Federal Regulations 588
[Please see PDF for image: ER06OC93.166 ]

Code of Federal Regulations

[59 FR 16296, Apr. 6, 1994]