Validity
This Executive Order approved the specified parts on on December 17, 2002.
As of Friday, October 11th, 2024 this Executive Order has not been overturned or superceeded.
This Executive Order approved the specified parts on on December 17, 2002.
As of Friday, October 11th, 2024 this Executive Order has not been overturned or superceeded.
Models | Modification | Remarks |
---|---|---|
1994-1997 model-year Cummins M11 heavy-duty diesel engines | The system includes a lean NOx catalyst, secondary fuel injection system, electronic controller, control sensors, and a catalyzed passive diesel particulate filter. | This exemption is only valid provided the engines meet the following operating conditions: (1) the engine exhaust temperature is greater than 260 degrees Celsius for at least 25 percent of the typical duty cycle and (2) the engine is operated using either standard California diesel with a maximum sulfur content of 500 parts per million by weight or ultra-low sulfur diesel with a maximum sulfur content of 15 parts per million by weight. |