40 C.F.R. § 1054 app B to Part 1054

Current through October 31, 2024
Appendix B to Part 1054 - Duty Cycles for Laboratory Testing

(a) Test handheld engines with the following steady-state duty cycle:

Table 1 to Appendix B-Duty Cycle for Handheld Engines

G3 mode No.Engine speedaTorque
(percent)b
Weighting factors
1Rated speed1000.85
2Warm idle00.15

a Test engines at the specified speeds as described in § 1054.505 .

b Test engines at 100 percent torque by setting operator demand to maximum. Control torque during idle at its warm idle speed as described in 40 CFR 1065.510 .

(b) Test nonhandheld engines with one of the following steady-state duty cycles:

(1) The following duty cycle applies for engines designed to idle:

Table 2 to Appendix B-Duty Cycle for Nonhandheld Engines With Idle

G2 Mode
No.a
Torque
(percent)b
Weighting factors
11000.09
2750.20
3500.29
4250.30
5100.07
600.05

a Control engine speed as described in § 1054.505 . Control engine speed for Mode 6 as described in § 1054.505(c) for idle operation.

b The percent torque is relative to the value established for full-load torque, as described in § 1054.505 .

(2) The following duty cycle applies for engines that are not designed to idle:

Table 3 to Appendix B-Duty Cycle for Nonhandheld Engines Without Idle

Mode No.aTorque
(percent)b
Weighting factors
11000.09
2750.21
3500.31
4250.32
5100.07

a Control engine speed as described in § 1054.505 .

b The percent torque is relative to the value established for full-load torque, as described in § 1054.505 .

40 C.F.R. 1054 app B to Part 1054

88 FR 4668 , Jan. 24, 2023
88 FR 4668 , 3/27/2023