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Method for the automatic adjustment of the ignition initiation control time in an internal combustion engine

  • US 4,549,513 A
  • Filed: 09/20/1982
  • Issued: 10/29/1985
  • Est. Priority Date: 07/26/1978
  • Status: Expired due to Fees
First Claim
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1. An improved method for the automatic control and regulation of the time of combustion initiation in an internal combustion engine having a drive shaft and comprising at least one cylinder provided with means for identifying the angular positions of the drive shaft corresponding to the occurrence of at least one event characteristic of the engine running conditions when said event and its detection has an aleatory character, the improvement comprising, for said at least one cylinder, measuring the angular position of the drive shaft at the moment at which said event occurs to obtain a number P of validated measurements, then, when at least a number P of validated measurements has been obtained during a number of cycles at most equal to a predetermined value Q, determining a statistical angular value representative of the validated measurements and, from said statistical value, generating and transmitting to the control means a signal representative of a modified value of the time of combustion initiation, so that said statistical value is equal to a predetermined value V, and wherein the value of P, Q and V is a value determined from at least one parameter having an effect on the engine running conditions.

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