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Expired Canadian patentCanada

Method of controlling fuel supply during starting and acceleration of an internal combustion engine

CA 1286556 C · Owner: Umeda, Tadashi · Inventors: Toshimitsu, Kazushige; Umeda, Tadashi; Igarashi, Hisashi

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Abstract From the Canadian patent

A method of controlling fuel supply during starting acceleration and acceleration after the interruption of fuel supply of an internal combustion engine is provided wherein a basic fuel supply amount which is determined in accordance with stable operating conditions of the engine is increased when it is detected that the throttle valve of the engine is opened from its almost closed position. The method comprises the steps of determining a reference value by adding a predetermined value of the throttle calve opening to a detected amount or value of throttle valve opening when it is detected that the throttle calve is opened from its almost closed position. The basic fuel supply amount is …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 30, 1987
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286556 C
Classification (IPC)F02D41/10

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 30, 1987Patent grantedJuly 23, 1991Term endedJuly 23, 2008

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.