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:
Jun. 06, 2017
Filed:
Aug. 17, 2015
GM Global Technology Operations Llc, Detroit, MI (US);
Krishnendu Kar, South Lyon, MI (US);
Leon Cribbins, Dexter, MI (US);
Thomas Weglarz, Farmington Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of controlling torque output of a power-plant during launch of a vehicle having a transmission with a manually-operated clutch is disclosed. The power-plant torque is varied based on clutch pedal and throttle pedal positions using a proportional-integral-derivative (PID) control logic in an electronic fuel control system. The method includes setting power-plant idle speed, detecting clutch engagement without application of the throttle pedal, and raising power-plant torque after clutch engagement is detected. In each PID feedback loop, the method includes detecting actual power-plant speed and a rate of change in actual power-plant speed, and adjusting the raised power-plant torque in response to the determined rate of change in actual power-plant speed. The method additionally includes determining a difference between the set idle speed and the actual power-plant speed, and maintaining constant power-plant torque, if the difference between the set idle and actual power-plant speeds is within an acceptable range.