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FUEL INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES

  • US 3,596,640 A
  • Filed: 04/01/1969
  • Issued: 08/03/1971
  • Est. Priority Date: 04/05/1968
  • Status: Expired due to Term
First Claim
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1. A fuel injection system for an internal combustion engine, comprising at least two electromagnetically operable fuel injection valve and a pulse generator for intermittently energizing each valve in timed relation to the engine-operaTing cycle, wherein there is provided an overrun control circuit comprising means responsive to an engine-operating parameter indicative of an engine-overrun condition and an electronic switching circuit connected to be operated by the overrunresponsive means, the overrun switching circuit being connected to the pulse generator so as to prevent a constant portion, but not all, or the valve energizations throughout the overrun condition.

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