High speed spark advancer for an internal combustion engine igni

Details High speed spark advancer for an internal combustion engine igni High speed spark advancer for an internal combustion engine igni

1980-02-01

1981-12-22

Nelli, Raymond A.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123415, F02P 504

Patent

active

043065350

ABSTRACT:
A speed sensor (90) of a high speed spark advancer (80) responds to the input voltage pulse on the primary winding (92) of a spark inducing ignition transformer (92a) to provide a single speed responsive pulse (115) during each complete operating cycle of an alternator driven ignition system (81). A speed switch (94) responds to each speed responsive pulse (115) to selectively transfer between a first condition when the engine (83) operates within a predetermined high speed range and a second condition when the engine (83) operates below the predetermined high speed range. A spark advance control (95) responds to the first condition to provide a modifying input to the ignition system (81) to provide a high speed advanced spark angle (168) and responds to the second condition to vary the modifying input to provide a second spark angle (169). The high speed spark advancer (80) provides a rapid transition (170) from the high speed advanced spark angle to the second spark angle to reduce the likelihood of detonation within the engine (83).

REFERENCES:
patent: 3874349 (1975-04-01), Fitzner
patent: 3898972 (1975-08-01), Haubner
patent: 3923022 (1975-12-01), Scholl
patent: 4015564 (1977-04-01), Fitzner
patent: 4111174 (1978-09-01), Fitzner et al.
patent: 4208992 (1980-06-01), Polo
patent: 4244336 (1981-01-01), Fitzner

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