Method of and apparatus for regulating crawling movements of motor vehicles

US5941792A · kind A · utility

Assignees

• LuK Getriebe-Systeme GmbH · DE
• Daimler-Benz AG · DE

Inventors

• Oliver Amendt · Bühl, DE
• Franz Kosik · Esslingen am Neckar, DE
• Thomas Grass · Neukirchen, DE

Key dates

• Filing date: Nov 13, 1997
• Grant date: Aug 24, 1999
• Expiry date: Nov 13, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/7044
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A power train in a motor vehicle has an automated clutch which is operated by a control unit by way of an actuator. The control unit receives signals from various parts of the engine, from the brake or brakes and from the transmission; such signals are processed and transmitted to the clutch by way of the actuator so that, when the vehicle is to carry out a crawling movement, the torque being transmitted by the then partly engaged clutch is properly related to the engine torque to ensure a predictable crawling movement of the vehicle regardless of eventual shifts of the operating point of the clutch and/or fluctuations of other parameters of the engine, transmission and/or clutch. The crawling movement can begin when the brake(s) is or are idle, the gas pedal is not depressed, and the engine is running; and crawling movement begins in response to shifting of the transmission into gear.