Crank angle detecting system for engines

Details Crank angle detecting system for engines Crank angle detecting system for engines

1989-04-14

1993-05-18

Wolfe, Willis R.

Internal-combustion engines

High tension ignition system

Electronic cylinder sequencing

123414, 123617, 123613, F02P 504, F02P 7073, F02P 7067

Patent

active

RE0342572

ABSTRACT:
A crank angle detecting system for a multicylinder engine includes a disc formed with a large number of slits to detect one-degree crank angular positions and a small number of slits to detect a predetermined piston stroke for each cylinder. Since the widths of a small number of slits are different from each other, it is possible to separately discriminate each cylinder in crank angular position on the basis of the crank angle signals obtained by a large number of slits. In the case where the detecting system is incorporated with a group-ignition system, it is possible to detect a predetermined piston stroke for each cylinder immediately after the engine is started, thus preventing the engine from erroneous ignition.

REFERENCES:
patent: 4250846 (1981-02-01), Menard
patent: 4284052 (1981-08-01), Hanisko
patent: 4378004 (1983-03-01), Petrie
patent: 4434770 (1984-03-01), Nishimura et al.
patent: 4442822 (1984-04-01), Kondo et al.
patent: 4485785 (1984-12-01), Hill

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