Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for measuring detonation in an internal combustion engine

CA 1330593 C · Owner: King, Kevin Dwight · Inventors: Mccoy, Steven Ray; King, Kevin Dwight; Stevenson, Thomas Theodore

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

24-, Abstract of the Disclosure, Method and Apparatus for Measuring Detonation in an Internal Combustion Engine A method and apparatus is provided for measuring detonation in an internal combustion engine. Vibration sensors located on the engine send signals through a filter which is tuned to the cavity resonance of the engine's cylinders. The peaks and valleys of the filtered signals are detected and ratiometrically compared one with another to determine the magnitude of detonation. The detonation information may be used by an engine control to retard timing in response to a predetermined level of detonation.

Read the whole patent

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 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1989
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330593 C
Classification (IPC)G01L23/22 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedAug 28, 1989Patent grantedJuly 5, 1994Term endedJuly 5, 2011

Sources & verification

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