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. 04, 2004
Filed:
Dec. 09, 2002
Maurice Leising, Clawson, MI (US);
Hussein Dourra, Bloomfield, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A process for regulating stopping of an engine during a typical traffic idling event in order to reduce fuel consumption. There is an interactive process between the engine and the transmission involving shutting down the engine when the driver has braked to a stop and restarting upon release of brake pressure. The transmission input elements are clamped during the engine shut down to minimize transient torque disturbance and the vehicle is restarted when motion is detected. The process involves pressurizing of first gear friction elements during the stop period using an auxiliary pump so that the transmission will be ready to transmit torque on restart. Restart surge is avoided by transmitting a limited amount of torque in a controlled manner during a restart.