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 N—Emission Regulations for New Otto-Cycle and Diesel Heavy-Duty Engines; Gaseous and Particulate Exhaust Test Procedures (§86.1301 to §86.1380-2004) > 86.1341-98—Test cycle validation criteria.

86.1341-98—Test cycle validation criteria.

Section 86.1341-98 includes text that specifies requirements that differ from § 86.1341-90. Where a paragraph in § 86.1341-90 is identical and applicable to § 86.1341-98, this may be indicated by specifying the corresponding paragraph and the statement “[Reserved]. For guidance see § 86.1341-90 ”
(a) Through (b)(2) [Reserved]. For guidance see § 86.1341-90.
(b) (3) All feedback torques due to accessory loads, either actual or simulated as defined in § 86.1327-90 (d)(4), shall be excluded from both cycle validation and the integrated work used for emissions calculations.
(4) For reference idle portions of the cycle where CITT is not applied, use measured torque values for cycle validation and the reference torque values for calculating the brake horsepower-hour value used in the emission calculations. For reference idle portions of the cycle where CITT is applied, use measured torque values for cycle validation and calculating the brake horsepower-hour value used in the emission calculations.
(c) Through (d) [Reserved]. For guidance see § 86.1341-90.

Code of Federal Regulations

[62 FR 47135, Sept. 5, 1997]