Cylinder identifying apparatus for a multi-cylinder internal com

Details Cylinder identifying apparatus for a multi-cylinder internal com Cylinder identifying apparatus for a multi-cylinder internal com

1992-07-06

1994-05-10

Noland, Tom

Measuring and testing

Test stand

For engine

32420725, G01M 1500

Patent

active

053097572

ABSTRACT:
A cylinder identifying apparatus for a multi-cylinder internal combustion engine can generate an exact reference position signal at an earliest possible time during engine start-up operation, thereby making it possible to identify predetermined reference positions of each cylinder in a highly accurate manner. A first signal generator 1 is provided on a camshaft for generating a cylinder identifying signal SC in synchronization with the rotation of the camshaft. A second signal generator 4 is provided on a crankshaft for generating, in synchronization with the rotation of the crankshaft, a pulse signal P containing a series of pulses each corresponding to predetermined first and second crank positions of each cylinder. A reference position signal generating circuit 2 generates, based on the output signals from the first and second signal generators, a reference position signal ST containing a series of pulses each exactly indicating the predetermined crank position of each cylinder and a cylinder identifying information signal indicative of the cylinder corresponding to each pulse of the reference position signal.

REFERENCES:
patent: 3915131 (1975-10-01), Brungsberg
patent: 4338813 (1982-07-01), Hunninghaus et al.
patent: 5041979 (1991-08-01), Hirka et al.
patent: 5070727 (1991-12-01), Davis et al.

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