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:
Jan. 05, 1993
Filed:
Dec. 20, 1991
Kazuhiko Norota, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An engine control apparatus for controlling a control parameter of an internal combustion engine equipped with an automatic transmission using a torque converter with a lock-up clutch. The an engine control apparatus which includes a measurement part for measuring a number of cycle-by-cycle changes of torque generated in the internal combustion engine for plural operating cycles thereof, a calculation part for calculating a torque variation value on the basis of the measured cycle-by-cycle torque changes for the plural operating cycles measured by the measurement part, a parameter control part for adjusting a control parameter of the internal combustion engine so that the torque variation value calculated by the calculation part substantially agrees with a target torque variation value which is predetermined in response to an operating condition of the engine, and a detection part for generating a signal indicative of whether or not the lock-up clutch is in operation, wherein the parameter control part adjusts the control parameter of the engine based on the detection signal generated by the detection part in such a way that the target torque variation value is lowered when the lock-up clutch is in operation and the lowered target torque variation value is smaller than a target torque variation value when the lock-up clutch is not in operation.