Adjustable fuel trim module for diesel engine
OwnerDouglas A. Cooper, Corey R. Springerinventors
Life of this patent
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Abstract
An adjustment mechanism for allowing fine-tuning the amount of fuel to a Diesel engine by an operator of the engine is provided. A module conveniently within reach of the operator of the engine allows the operator to tune the engine independent of any throttle setting while the engine is operating. In one embodiment for an electronically controlled Diesel engine, an electrical input representative of barometric pressure to an electronic engine controller is modified to be under control of the operator, who can adjust the input independent of the throttle to vary injected quantities of fuel according to the instant conditions under which the engine is operating.
Claims16
A method for operating a Diesel engine comprising:
- evaluating operation of the Diesel engine for a given load and any given throttle position,
- adjusting quantity of injected fuel into cylinders of the Diesel engine for any throttle position while the Diesel engine is operating to improve operation of the Diesel engine,
- maintaining an adjusted quantity of injected fuel for said any throttle setting, thereby maintaining an improved state of operation of the Diesel engine.
A method for operating a Diesel engine having an electronic engine controller comprising:
- evaluating operation of said Diesel engine for a given load and any given throttle position,
- while said Diesel engine is operating, varying a voltage applied to an altitude input of said electronic engine controller independently of an actual altitude the engine is located in order to adjust a quantity of fuel injected into cylinders of said Diesel engine for any given throttle position to improve operation of said Diesel engine,
- when operation of said Diesel engine is optimally improved, maintaining a selected voltage applied to said altitude input of said electronic engine controller.
A method for operating a Diesel engine having an electronic engine controller with at least one electrical input for receiving a voltage representative of altitude, said method comprising:
- developing a voltage representative of optimal operation of said Diesel engine,
- disconnecting said voltage representative of altitude from said electrical input for receiving a voltage representative of altitude,
- applying said voltage representative of optimal operation of said Diesel engine to said electrical input for receiving a voltage representative of altitude, thereby optimizing operation of said Diesel engine.
Dependencies are inferred from the claim text.