Diesel engine injection timing signal interceptor module
AssigneeCSXT Intellectual Properties Corporation
InventorsTed E. Stewart, Daniel J. Podnar
Life of this patent
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Abstract
A diesel engine injection timing signal interceptor module comprised of a micro-controller-based control module and interface circuitry that intercepts engine speed and position signals from engine sensors and produces output signals which are shifted in time (advanced or retarded) relative to the sensor signals. By controlling the amount of time shift, the interceptor manipulates fuel injection timing. Use of the interceptor module provides the ability to reduce NOx emissions while achieving acceptable fuel consumption, without having to change the engine's sensors, electronic controller or fuel injectors.
Claims16
An engine injection timing signal interceptor module comprised of a means for receiving at least one sensor signal, a means for producing at least one output signal shifted in time relative to the received at least one sensor signal and a means for communicating the at least one output signal to an electronic controller, said at least one output signal causing the electronic controller to produce an injection timing signal.
An engine injection timing signal interceptor module comprised of a means for receiving at least one sensor signal, a micro-controller for determining a time shift and generating at least one micro-controller signal based on the received at least one sensor signal and an interface for producing an output signal based on the at least one micro-controller signal, said microcontroller and said interface being connected to a single circuit board.
A method for altering injection timing in an engine having an electronic controller to govern injection timing, said method comprising steps of:
- intercepting one or more input signals representing engine speed and engine position,
- generating one or more output signals representing said one or more input signals shifted in time by a determined offset,
- communicating said output signals to the electronic controller, the output signals causing the electronic controller to produce determined injection timing signals.
Dependencies are inferred from the claim text.