Fuel control system for internal combustion engines

Claim 1

A fuel control system for an internal combustion engine having at least one cylinder with an injector, comprising: first means for inputting a throttle opening θ th and an engine speed N e to generate a basic injection pulse width T p ; second means for detecting a peak value θ pmax of pressures in said cylinder of said engine during each cycle thereof to calculate an average value θ pmax of said peak values and determine whether a difference (θ pmax -θ pmax ) between said average value θ pmax and a peak value θ pmax during each cycle is within a tolerance ε whereby when said difference is greater than said tolerance a correction factor α is established in a direction tending to decrease said difference; third means for calculating an injection time T i of said injector in accordance with said basic injection pulse width T p from said first means and said correction factor α; and fourth means for energizing said injector for the duration of said injection time T i from said third means.