US 6,939,265 B2Granted

Method of controlling a motor vehicle with an automated clutch device

AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG

InventorsCarsten Rustige, Klaus Küpper, Martin Zimmermann, Martin Vornehm

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Abstract

A method of controlling a motor vehicle with an automated clutch is provided and includes the steps of: (a) detecting the vehicle speed, (b) detecting if the brake and/or the gas pedal is actuated, (c) detecting whether or not the engine is running, (d) disengaging the clutch if the engine is found to be running while the vehicle is found to be moving faster than a threshold speed, and if at the same time neither the brake nor the gas pedal is found to be actuated, and (e) subsequently re-engaging the clutch if the brake and/or gas pedal is found to be actuated. Prior to re-engaging the clutch, a transmission input rpm-rate is determined, and an engine rpm-rate is controlled in such a manner that that the respective rpm-rates of the engine and the transmission are brought towards a closer agreement.

Claims23

Dependent claims

A method of controlling a motor vehicle with an automated clutch, with an engine that is actuated by an engine control device, with an actuator-controlled automated transmission, and with at least one electronic control device for actuating the transmission and the clutch, the method including the steps of:

detecting a quantity that is at least representative of a traveling speed of the vehicle,
detecting an actuation of at least one of a brake and a fuel-metering element,
detecting an operating state of the engine,
taking the clutch out of engagement if the engine is found to be running while the vehicle is found to be traveling at a speed greater than a threshold value, and if at the same time neither a brake pedal nor the fuel-metering element is found to be actuated, and
subsequently re-engaging the clutch if at least one of the brake pedal and the fuel-metering element is found to be actuated,
wherein prior to said re-engaging of the clutch, a transmission input rpm-rate is determined, and an engine rpm-rate is controlled in such a manner that said engine rpm-rate and said transmission input rpm-rate are brought towards a closer agreement.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/719,658Filed 20 Nov 2003 · continuation
Priority: DE 101 24 60621 May 2001
Published: US 2004/0138027 A115 Jul 2004
Granted: 6 Sep 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification30 codes

B60W 10/06
Including control of propulsion units: including control of combustion engines
B60W 10/02
Conjoint control of vehicle sub-units of different type or different function: including control of driveline clutches
B60W 10/10
Conjoint control of vehicle sub-units of different type or different function: including control of change-speed gearings
B60W 10/11
Including control of change-speed gearings: stepped gearings