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:
Oct. 13, 1992
Filed:
Sep. 27, 1991
Takeshi Murai, Hatsukaichi, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An automatic speed control system has a device for detecting an actual speed of vehicle, a device for setting a target speed of the vehicle, and a device for controlling the actual speed so that it approaches the target speed by adjusting a throttle opening. The improved system includes a down-shift device for making a down-shift operation of a transmission so as to accomplish the target speed under a predetermined condition when the vehicle runs on an uphill rod, and uphill end judge device for holding that an end of the uphill road has been reached when the throttle opening is reduced beyond a predetermined value from a maximum value after the down-shift operation. An uphill end of a short length can be properly detected so that a desirable speed control can be accomplished.