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:
Dec. 01, 1987
Filed:
Dec. 17, 1986
Mamoru Hayama, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
A cruise control system for a vehicle having an automatic transmission comprises a vehicle speed sensor for detecting the actual vehicle speed, an engine output power control mechanism, and a vehicle speed controller which compares the actual vehicle speed detected by the vehicle speed sensor with a set speed and controls the engine output power control mechanism in accordance with the result of the comparison so that the vehicle speed is converged upon the set speed at a predetermined rate. The automatic transmission is caused to downshift when the actual vehicle speed is lowered from the set speed by a predetermined amount while the vehicle speed controller operates to fix the vehicle speed, and when the automatic transmission is shifted down, the predetermined rate of convergence is reduced so that the vehicle speed is converged upon the set speed at a reduced rate.