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:
Nov. 06, 1990
Filed:
Nov. 01, 1989
Hiroko Maekawa, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A speed control apparatus for an automotive vehicle performs creep control and suppresses wheel slipping. At low vehicle speeds, a control unit calculates a target vehicle speed based on the amount of depression of the accelerator pedal and controls a throttle actuator to maintain the target speed. The driver can change the target speed by adjusting the amount of accelerator pedal depression. The brakes of the vehicle are automatically applied when the accelerator pedal is released. A vehicle separation sensor measures the separation from a preceding vehicle. When the vehicle separation falls below a prescribed level, the control unit automatically applies the brakes of the vehicle. The control unit detects wheel slip by monitoring the speed difference between the front and rear wheels. When wheel slip occurs, the control unit decreases the throttle valve opening and applied the brakes until wheel slip is suppressed.