e-CFR data is current as of July 7, 2020 |

Title 40 → Chapter I → Subchapter U → Part 1042 → Subpart J → Appendix |

Title 40: Protection of Environment

PART 1042—CONTROL OF EMISSIONS FROM NEW AND IN-USE MARINE COMPRESSION-IGNITION ENGINES AND VESSELS

Subpart J—Definitions and Other Reference Information

(a) The following duty cycles apply as specified in §1042.505(b)(1):

(1) The following duty cycle applies for discrete-mode testing:

E3 mode No. | Engine speed^{1} | Percent of maximum test power | Weighting factors |
---|---|---|---|

1 | Maximum test speed | 100 | 0.2 |

2 | 91% | 75 | 0.5 |

3 | 80% | 50 | 0.15 |

4 | 63% | 25 | 0.15 |

^{1}Maximum test speed is defined in 40 CFR part 1065. Percent speed values are relative to maximum test speed.

(2) The following duty cycle applies for ramped-modal testing:

RMC mode | Time in mode (seconds) | Engine speed ^{1 3} | Power (percent) ^{2 3} |
---|---|---|---|

1a Steady-state | 229 | Maximum test speed | 100%. |

1b Transition | 20 | Linear transition | Linear transition in torque. |

2a Steady-state | 166 | 63% | 25%. |

2b Transition | 20 | Linear transition | Linear transition in torque. |

3a Steady-state | 570 | 91% | 75%. |

3b Transition | 20 | Linear transition | Linear transition in torque. |

4a Steady-state | 175 | 80% | 50%. |

^{1}Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.

^{2}The percent power is relative to the maximum test power.

^{3}Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode, and simultaneously command a similar linear progression for engine speed if there is a change in speed setting.

(b) The following duty cycles apply as specified in §1042.505(b)(2):

(1) The following duty cycle applies for discrete-mode testing:

E5 mode No. | Engine speed ^{1} | Percent of maximum test power | Weighting factors |
---|---|---|---|

1 | Maximum test speed | 100 | 0.08 |

2 | 91% | 75 | 0.13 |

3 | 80% | 50 | 0.17 |

4 | 63% | 25 | 0.32 |

5 | Warm idle | 0 | 0.3 |

^{1}Maximum test speed is defined in 40 CFR part 1065. Percent speed values are relative to maximum test speed.

(2) The following duty cycle applies for ramped-modal testing:

RMC mode | Time in mode (seconds) | Engine speed ^{1 3} | Power (percent) ^{2 3} |
---|---|---|---|

1a Steady-state | 167 | Warm idle | 0. |

1b Transition | 20 | Linear transition | Linear transition in torque. |

2a Steady-state | 85 | Maximum test speed | 100%. |

2b Transition | 20 | Linear transition | Linear transition in torque. |

3a Steady-state | 354 | 63% | 25%. |

3b Transition | 20 | Linear transition | Linear transition in torque. |

4a Steady-state | 141 | 91% | 75%. |

4b Transition | 20 | Linear transition | Linear transition in torque. |

5a Steady-state | 182 | 80% | 50%. |

5b Transition | 20 | Linear transition | Linear transition in torque. |

6 Steady-state | 171 | Warm idle | 0. |

^{1}Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.

^{2}The percent power is relative to the maximum test power.

^{3}Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode, and simultaneously command a similar linear progression for engine speed if there is a change in speed setting.

(c) The following duty cycles apply as specified in §1042.505(b)(3):

(1) The following duty cycle applies for discrete-mode testing:

E2 mode No. | Engine speed ^{1} | Torque (percent) ^{2} | Weighting factors |
---|---|---|---|

1 | Engine Governed | 100 | 0.2 |

2 | Engine Governed | 75 | 0.5 |

3 | Engine Governed | 50 | 0.15 |

4 | Engine Governed | 25 | 0.15 |

^{1}Speed terms are defined in 40 CFR part 1065.

^{2}The percent torque is relative to the maximum test torque as defined in 40 CFR part 1065.

(2) The following duty cycle applies for ramped-modal testing:

RMC mode | Time in mode (seconds) | Engine speed | Torque (percent) ^{1 2} |
---|---|---|---|

1a Steady-state | 229 | Engine Governed | 100%. |

1b Transition | 20 | Engine Governed | Linear transition. |

2a Steady-state | 166 | Engine Governed | 25%. |

2b Transition | 20 | Engine Governed | Linear transition. |

3a Steady-state | 570 | Engine Governed | 75%. |

3b Transition | 20 | Engine Governed | Linear transition. |

4a Steady-state | 175 | Engine Governed | 50%. |

^{1}The percent torque is relative to the maximum test torque as defined in 40 CFR part 1065.

^{2}Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode.

[81 FR 74156, Oct. 25, 2016]