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:
May. 22, 2007
Filed:
Apr. 20, 2005
Paul D. Stevenson, Ann Arbor, MI (US);
Paul D. Stevenson, Ann Arbor, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
The present invention relates to the use of a magnetic sensor to detect the speed of transmission clutch plates or clutch hub. A clutch fiber plate, which is mechanically linked to a buried (or inwardly nested) transmission component, is serrated to generate detectable pulsations or fluctuations in the magnetic intensity of the clutch fiber plate as it rotates. The speed of the buried transmission component is useful in controlling a second clutch arrangement to reduce engine torsional pulses by generating a predetermined amount of slip upon engagement. Moreover, the sensor is configurable to determine the acceleration of the clutch fiber plate to control engine acceleration during a vehicle launch. The sensor is mounted to the transmission housing radially superjacent the clutch fiber plate; therefore, the axial space claim for the transmission does need not increase to accommodate the sensor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile