Ignition apparatus for internal combustion engine

Details Ignition apparatus for internal combustion engine Ignition apparatus for internal combustion engine

1985-09-30

1986-10-07

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123612, 123618, F02P 504

Patent

active

046153187

ABSTRACT:
An ignition apparatus for an internal combustion engine includes means for generating signals indicating when the crankshaft and camshaft of the engine have respectively reached predetermined angular positions, a command circuit for initiating and terminating ignition operation in response to these position signals, and means for establishing a first operating condition, following each camshaft position pulse, in which the ignition operation is enabled and a second operating condition, following a subsequent crankshaft position pulse, in which ignition operation is inhibited, to thereby eliminate redundant ignition operation and the attendant power loss and heat generation. The apparatus also includes a timer circuit which act to enable resetting to the second operating condition by the crankshaft position pulses only during a fixed time interval following each cam shaft position pulse, in order to ensure stable operation when operating at very low engine speeds.

REFERENCES:
patent: 4353341 (1982-10-01), Henning
patent: 4414946 (1983-11-01), Daumer et al.
patent: 4519362 (1985-05-01), Arakawa et al.
patent: 4520781 (1985-06-01), Nishida

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