High pressure fuel injection unit
First Claim
1. A fuel injection system for a multi cylinder engine comprising fuel injection means for delivering fuel directly into the cylinders of the engine, means for measuring the rotational speed of said engine in timed relation to the firing of each of said cylinders during the running of the engine, and means for adjusting said fuel injection means for minimizing variations in engine speed due to cylinder to cylinder variations.
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Accused Products
Abstract
A fuel injection system and method for a fuel injected engine of the multi cylinder type for minimizing variations in crankshaft speed due to variations in individual cylinder to cylinder firing. These variations are compensated for by changing the fuel injection and specifically the duration of the fuel injection. The engine speed is measured for each cylinder either by the time required to reach top dead center from a predetermined angle, the time to reach bottom dead center from a predetermined angle, or from the average speed.
30 Citations
40 Claims
- 1. A fuel injection system for a multi cylinder engine comprising fuel injection means for delivering fuel directly into the cylinders of the engine, means for measuring the rotational speed of said engine in timed relation to the firing of each of said cylinders during the running of the engine, and means for adjusting said fuel injection means for minimizing variations in engine speed due to cylinder to cylinder variations.
- 21. A method of operating a fuel injection system for a multi cylinder engine comprising fuel injection means for delivering fuel directly into the cylinders of the engine, comprising the steps of measuring the rotational speed of said engine in timed relation to the firing of each of said cylinders during the running of the engine, and adjusting the fuel injection means for minimizing variations in engine speed due to cylinder to cylinder variations.
Specification