Fuel system

Active Publication Date: 2006-03-07
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Problems solved by technology

The technical problem addressed in this patent is how to improve the efficiency and durability of fuel systems used in engines while ensuring proper fuel pressure measurement and injection timing and duration.

Method used

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Embodiment Construction

[0010]An exemplary embodiment of an engine 10 having a fuel system 12 and a control system 13 is illustrated in FIG. 1. For the purposes of this disclosure, engine 10 is depicted and described as a four-stroke diesel engine, having a typical cycle consisting of an intake stroke, a compression stroke, a power stroke, and an exhaust stroke. One skilled in the art will recognize, however, that engine 10 may be any other type of internal combustion engine such as, for example, a gasoline engine. Engine 10 may include an engine block 14 that defines a plurality of cylinders 16, a piston 18 slidably disposed within each cylinder 16, and a cylinder head 20 associated with each cylinder 16.

[0011]Cylinder 16, piston 18, and cylinder head 20 may form a combustion chamber 22. In the illustrated embodiment, engine 10 includes six combustion chambers 22. However, it is contemplated that engine 10 may include a greater or lesser number of combustion chambers 22 and that combustion chambers 22 may be

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Abstract

A fuel system for an engine has a source of pressurized fuel, a rail, and a plurality of fuel injectors. The fuel system also has a sensor to sense a parameter of the pressurized fuel, and a controller. The controller is configured to generate a flow control offset value indicative of a difference between the value of the parameter and a desired value for the parameter, and to control operation of the source in response to the flow control offset value when the sensor is determined to be functioning properly. The controller is also configured to store the flow control offset value in a memory of the controller when the sensor is determined to be functioning properly and to associate the flow control offset value with at least one operating condition of the engine. The controller is further configured to control operation of the source in response to previously stored flow control offset value when the sensor is determined to be malfunctioning.

Description

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Claims

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Application Information

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Owner CATERPILLAR INC
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