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 M—Evaporative Emission Test Procedures for New Gasoline-Fueled, Natural Gas-Fueled, Liquefied Petroleum Gas-Fueled and Methanol-Fueled Heavy-Duty Vehicles (§86.1201-90 to §86. > 86.1237-96—Dynamometer runs.

86.1237-96—Dynamometer runs.

Section 86.1237-96 includes text that specifies requirements that differ from § 86.1237-85. Where a paragraph in § 86.1237-85 is identical and applicable to § 86.1237-96, this may be indicated by specifying the corresponding paragraph and the statement “[Reserved]. For guidance see § 86.1237-85.”
(a) The vehicle shall be either driven or pushed onto the dynamometer; however, if driven, the total time of engine operation during the 12 to 36 hour soak period shall not exceed 3 minutes, and the vehicle shall be driven at minimum throttle. The vehicle shall be stored prior to dynamometer operation in such a manner that it is not exposed to precipitation (e.g., rain or dew).
(b) [Reserved]. For guidance see § 86.1235-85.

Code of Federal Regulations

[58 FR 16061, Mar. 24, 1993]