Apparatus and method for suppressing diesel engine emissions
AssigneeGeneral ElectricCompany
InventorsGong Chen, Bertrand Dahung Hsu, Robert Douglas Cryer
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Abstract
A method of controlling fuel injection timing in a compression ignition engine including at least one cylinder. The method includes monitoring a parameter indicative of a commanded operating speed of the engine corresponding to an engine throttle notch and monitoring a parameter indicative of the actual operating speed of the engine. When the commanded engine speed exceeds the actual engine speed, the fuel injection timing for the engine may be advanced to reduce emissions.
Claims15
A method of controlling fuel injection timing in a diesel engine of a railroad locomotive operable through discrete throttle notches of engine operating speed and power and subject to a load transient mode of operation, in which the load applied to the engine is increased without an increase in engine throttle notch, the method comprising:
- monitoring parameters indicative of a commanded speed of operation of the engine corresponding to an engine throttle notch;
- transmitting data representative of the commanded engine operating speed;
- monitoring parameters indicative of an actual speed of operation of the engine;
- transmitting data representative of the actual engine operating speed;
- in response to data representative of the commanded and actual engine operating speeds, detecting when the commanded engine speed exceeds the actual speed to establish a load transient mode;
- and
- advancing the fuel injection timing for the engine in accordance with a predetermined timing schedule in response to detecting a load transient mode, for reduced engine emissions.
A method of controlling fuel injection timing in a diesel engine of a railroad locomotive operative through discrete notches of engine operating speed and power and subject to an engine transient mode of operation in which the engine notch is increased, the method comprising:
- monitoring a parameter indicative of a commanded operating speed of the engine corresponding to an engine throttle notch;
- transmitting data representative of the commanded operating speed;
- monitoring a parameter indicative of the actual operating speed of the engine;
- transmitting data representative of the actual engine operating speed;
- in response to data representative of the commanded and the actual engine operating speeds, detecting when the commanded engine speed exceeds the actual engine speed to establish an engine transient mode;
- monitoring a parameter indicative of the operation of the engine as it responds to an increase in engine throttle position during an engine transient mode to detect a change in engine operation during the engine transient mode;
- transmitting data representative of a change in engine operation;
- and
- advancing the fuel injection timing for the engine in accordance with a predetermined timing schedule in response to detecting an engine transient mode together with detecting a change in engine operation during the engine transient mode for reduced engine emissions.
Dependencies are inferred from the claim text.