The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2000
Filed:
Jun. 12, 1998
Toshiaki Hata, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
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.