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. 11, 1986
Filed:
Dec. 11, 1984
Robert P Page, Birmingham, GB;
John N Cheel, Birmingham, GB;
Stuart I Howarth, Birmingham, GB;
John P Millward, Birmingham, GB;
Lucas Industries public limited company, Birmingham, GB;
Abstract
A control system for a vehicle transmission in which the clutch is controlled by an actuator including a cylinder to which fluid can be supplied by way of valves. The valves are controlled to give at least two phases of clutch engagement. In the first phase the valves are controlled by a processor so that the clutch starts to transmit a small torque. This phase is followed by a further phase in which if the vehicle brakes are applied the clutch is controlled in accordance with the law E=KdN/dT where E equals the error which the control system seeks to minimize, N is the engine speed, T the time and K a constant. If the brakes are not applied or when they are released the clutch is controlled so as to control at one of a plurality of constant rates, the acceleration of the engine.