Patent · US Active

Method for controlling disengagement of an automated clutch in a vehicle

US8162800B2 · kind B2 · utility

0Cited by

3References

6Claims

0Family size

Assignee

VOLVO LASTVAGNAR AB · SE

Inventors

Svante Karlsson · Mörbylånga, SE
Helene Panagopoulos · Handen, SE
Erik Lauri · Timrå, SE

Key dates

Filing date	Jan 5, 2006
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Aug 24, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D2500/50825
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method is provided for controlling disengagement of an automated clutch in a vehicle. A decrease of a first engine rotational speed limit, at which the clutch is disengaged, is initiated upon sensing travel of the vehicle in a down slope, and zero displacement of the throttle control. The first engine rotational speed limit is decreased to a speed where an, in the vehicle arranged, engine idle speed regulator injects an amount of fuel corresponding to a positive engine torque which equals current retarding negative engine torque so that total output torque from the engine is approximately zero. The vehicle accelerating effect due to engine braking torque drop out when the clutch is disengaged will be eliminated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.