Method and apparatus for measurement of engine ignition timing

Details Method and apparatus for measurement of engine ignition timing Method and apparatus for measurement of engine ignition timing

F - Mech Eng,Light,Heat,Weapons

02

P

324/16, 354/24

F02P 17/00 (2006.01) F02P 17/04 (2006.01) F02B 1/04 (2006.01)

Patent

CA 1165442

METHOD AND APPARATUS FOR MEASUREMENT OF ENGINE IGNITION TIMING Abstract of the Disclosure Method and apparatus for measuring ignition timing of an internal combustion engine wherein angular position of the engine crankshaft is monitored while microwave radiation is injected into a selected engine cylinder. An angular position of the engine crankshaft at an apparent top dead center position of the piston in the selected cylinder is identified as a function of micro- wave resonances within the cylinder. The angle of piston top dead center position is then compared with an event correlated with ignition at the selected cylinder to determine the ignition angle relative to the piston top dead center position. Ignition timing may then be adjusted to obtain a desired angular relationship between ignition and piston top dead center.

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