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:
Aug. 21, 1990
Filed:
Sep. 08, 1989
Toshiro Abe, Tokyo, JP;
Atsunori Hashimoto, Kanagawa, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A system and method for controlling ignition timing for a vehicular internal combustion engine in which when the engine is transferred to a transient operating state (accelerated or decelerated), a correction for the basic ignition timing determined according to engine operating conditions is reversed depending on whether the basic ignition timing advance angle exceeds a MBT (Minimum advance for a Best Torque) ignition timing angle such that, on condition that the basic ignition advance angle exceeds the MBT ignition timing angle, the basic ignition timing advance angle is advanced when the engine rotational speed is increased and is retarded when the engine rotational speed is decreased, thus suppressing the generation of shuddering vibrations generated by the engine.