Patent ID: 6968830
Filing Date: 2005-11-29
Classification: F02D,Y02T

Abstract:
1. A method of reducing emissions from a large, medium speed fuel injected diesel engine of the type used on locomotives subject to transient modes of engine operation in which the engine is accelerated or increased loads are applied, the method comprising: monitoring at least one operating parameter of the diesel engine; determining, based on such operating parameter, whether the diesel engine is in a transient mode; controlling timing of fuel injection to cylinders of the engine by retarding the timing when the diesel engine is in a transient mode relative to the timing of fuel injection when the diesel engine is not in a transient mode of operation; maintaining retarding the timing when the diesel engine is in the transient mode; determining, after the diesel engine has been operating in a transient mode, whether the diesel engine is then operating out of the transient mode; and advancing the fuel injection timing for the diesel engine, if the diesel engine is no longer in the transient mode.