Cummins Inc.

Cummins Engine Company, Inc.

Eric A Pyers

Vivek Anand Sujan

Martin T Books

J Steven Kolhouse

Dennis O Taylor

Ray C Hatton

Robert Edward Cochran

David L Clark

Apparatuses, systems, methods, and techniques relating to engine start/stop functionality are disclosed. Automatic engine start/stop controls can be disabled during engine operating conditions in which one or more combustion parameters indicate a lack of combustion stability in one or more cylinders of the engine. Engine start/stop controls are enabled when the one or more combustion parameters satisfy combustion parameter conditions indicating combustion stability in the one or more cylinders.

Engine stop/start enablement based on combustion parameters

A dual throttle system for an internal combustion engine includes first foot pedal throttle and a second hand controller throttle. The system includes a throttle position signal generator that produces a throttle position signal at an input to an electronic engine control module (ECM). The engine control module uses the throttle position signal input to determine an engine speed and issues appropriate commands to a fuel system controller. The throttle position generator includes a first potentiometer having its wiper mechanically connected to the first throttle and its output electrically connected to the throttle position signal input of the ECM. The first potentiometer is connected in series between a voltage source in the ECM and the wiper of a second variable resistance component driven by the second throttle. The output of the second component is connected to ground to complete the series circuit. The voltage seen at the throttle signal input of the ECM is a function of the combined series resistances of the potentiometer and the second variable resistance component based upon the positions of the respective throttles.

Dual throttle control to a single throttle input

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Scipio, IN, United States of America

Eric A Pyers