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Correction device for a fuel metering system in an internal combustion engine

  • US 4,426,980 A
  • Filed: 03/28/1983
  • Issued: 01/24/1984
  • Est. Priority Date: 03/26/1980
  • Status: Expired due to Term
First Claim
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1. A drift-compensation correction device for controlling a fuel metering system having a fuel pump in an internal combustion engine in which there is an incorrect relationship between a fuel metering signal and metered fuel quantity due to fuel pump aging, comprising:

  • means for generating set-point data signals responsive to operating parameters of said engine, said data signals including a drift signal corresponding to said incorrect relationship,means responsive to a final control element in said fuel metering system for generating actual data signals,a comparator means for comparing said actual and set-point signals,a regulating means responsive to said comparator means for providing said fuel metering signal to said final control element via an output circuit means for determing said quantity of fuel to be metered to said pump, andmeans supplying a correction intervention signal to said fuel metering signal corresponding to said drift signal, whereby the effect of drift in said set-point generating means due to aging of said pump is compensated for and said set-point generating means is restored to its original output rating value.

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