Reverse rotation control apparatus for a two-cycle engine of a m

Details Reverse rotation control apparatus for a two-cycle engine of a m Reverse rotation control apparatus for a two-cycle engine of a m

1998-06-12

2000-03-21

Kamen, Noah P.

Internal-combustion engines

Cooling

With jacketed head and/or cylinder

123 41R, F01L 1302

Patent

active

060390107

ABSTRACT:
A reverse rotation control apparatus of inexpensive structure for making it possible to reverse rotation of a two-cycle engine for a motor vehicle without need for monitoring constantly engine rotation speed (rpm) while sparing gear box includes a variety of sensors for generating signals corresponding to engine operating states, and an ignition control unit (10A) for generating an ignition signal (P) on the basis of the various signals. The sensors include a rotation sensor (6) for generating a rotation signal (SG) indicating engine rotation number (Re) and a reverse rotation switch (23) for generating a reverse rotation command signal (RW). The ignition control unit (10A) includes a means for arithmetically determining on the basis of engine state a timer period (TM) over which misfire is caused to occur successively upon inputting of the reverse rotation command signal, a means for causing the misfire to occur over the timer period (TM), and a means for outputting only once an overadvanced ignition signal upon termination of the timer period (TM) which corresponds to a time taken for the engine rotation number (Re) to lower to a predetermined rotation number (ReW) due to the misfire events.

REFERENCES:
patent: 5036802 (1991-08-01), D'Amours
patent: 5782210 (1998-07-01), Venturoli et al.
patent: 5794574 (1998-08-01), Bostelmann et al.

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