Automatic ignition control system

Details Automatic ignition control system Automatic ignition control system

1989-07-24

1990-07-03

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Engine speed reduction by partial or complete omission of...

123198DC, F02P 5145

Patent

active

049381890

ABSTRACT:
An engine ignition control system comprising an ignition circuit of capacitor charge-discharge type is disclosed in which the ignition timing is determined by controlling the charge-discharge cycle of a capacitor by an output signal from an engine speed detection circuit. An overspeed control circuit stops the ignition when a detection output signal of the engine speed detection circuit exceeds a reference voltage level corresponding to a set engine speed. A slowing down control circuit is actuated in response to an engine slowing down operation start switch for realizing a hypothetical condition substantially equivalent to the one in which the engine speed detection circuit detects an engine speed higher than the actual engine speed thereby to accomplish engine slowing down operation by (a) increasing the reference voltage level gradually, or (b) increasing the output signal level of the engine speed detection circuit stepwise.

REFERENCES:
patent: 4459951 (1984-07-01), Tobinaga et al.
patent: 4594978 (1986-06-01), Kanno
patent: 4625689 (1986-12-01), Komurasaki
patent: 4641618 (1987-02-01), Dogadko et al.
patent: 4733644 (1988-03-01), Staerzl

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