Engine control system for reducing particulate matter
AssigneeGeneral Electric Company
InventorsRoy James Primus, Thomas Michael Lavertu, Adam Edgar Klingbeil
Life of this patent
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Abstract
A control system for an engine includes one or more processors configured to determine when a change in one or more of oxygen or fuel supplied to an engine. The one or more processors also are configured to, responsive to determining the change in oxygen and/or fuel supplied to an engine, direct one or more fuel injectors of the engine to begin injecting fuel into one or more cylinders of the engine during both a first fuel injection and a second fuel injection during each cycle of a multi-stroke engine cycle of the one or more cylinders.
Claims24
A control system for an engine, the control system comprising:
- one or more processors configured to determine a change in one or more of oxygen or fuel supplied to one or more cylinders of an engine,
- wherein the one or more processors also are configured to, responsive to determining the change in the one or more of oxygen or fuel supplied to the one or more cylinders of the engine, direct one or more fuel injectors of the engine to begin injecting fuel into the one or more cylinders of the engine during both a first fuel injection and a second fuel injection during each cycle of a multi-stroke engine cycle of the one or more cylinders.
A method for controlling an engine, the method comprising:
- determining when an oxygen-to-fuel ratio (OFR) of an engine decreases below at least a first threshold;
- and
- responsive to determining that the OFR of the engine has decreased below at least the first threshold, directing one or more fuel injectors of the engine to begin injecting fuel into one or more cylinders of the engine during both a first fuel injection and a second fuel injection during each cycle of a multi-stroke cycle of the one or more cylinders.
A control system for an engine, the control system comprising:
- a temperature sensor configured to obtain temperature measurements in one or more of an intake manifold of the engine or in air that is output from a compressor disposed upstream from the engine;
- a pressure sensor configured to obtain pressure measurements in the one or more of the intake manifold of the engine or the air that is output from the compressor;
- and
- one or more processors configured to examine the temperature measurements and the pressure measurements in order to identify a decrease in an oxygen-to-fuel ratio (OFR) of the engine,
- wherein the one or more processors also are configured to, responsive to identifying the decrease in the OFR of the engine, direct fuel injectors of the engine to begin injecting fuel into cylinders of the engine during both a primary fuel injection and a post fuel injection during each engine cycle of the cylinders.
Dependencies are inferred from the claim text.