About 199 results
https://drivepatents.com/patents/1095997 · 14 May 2003
Method for changing down gears by one or two ratios in an automatic gearbox equipped with an input clutch controlled by a calculator comprises an initial declutching phase, a gear change phase (2) and a re-clutching phase. The latter phase comprises a firs...
https://drivepatents.com/patents/1096547 · 23 Apr 2003
The method involves a dual downshift demand resulting in a shift taking place in a sub-gearbox (6,10) without the other sub-gearbox transferring torque from the drive engine to the output during the gear shift and the torque from the engine (4) is used to ...
https://drivepatents.com/patents/1097054 · 2 Apr 2003
The control method for a drive train (1) with an engine, an electronic engine control (4), an automatic transmission (5), an electronic transmission control (7) and an automatic clutch, determines the engine revs during a creep movement, for comparison wit...
https://drivepatents.com/patents/1097455 · 19 Mar 2003
An electro-hydraulic control block (3) has electric valves (4,6,7,8,9) which connect with the clutch jack (11), the gear selection jack (1) and the gear engagement jack (2) and control their operation by admission of oil under pressure from the pressure ac...
https://drivepatents.com/patents/1097437 · 19 Mar 2003
The upward gear-changing sequence consists of an initial declutching phase (1), a gear changing phase (2) and a clutch re-engagement phase (3). The clutch re-engagement phase comprises a first stage in which it is closely quickly and partially, re-establis...
https://drivepatents.com/patents/1097847 · 5 Mar 2003
An automated manual transmission system for a vehicle shifts a shift stage of an automated manual transmission (30) to a shift stage required by an operation of the shift lever (61) after the shift stage of the automated manual transmission is set at a fir...
https://drivepatents.com/patents/1098086 · 26 Feb 2003
The method of operating a motor vehicle internal combustion engine involves producing a rotational speed model of the engine in dependence on the position of the accelerator pedal and-or other vehicle parameters. The speed range is determined and the ignit...
https://drivepatents.com/patents/1098740 · 29 Jan 2003
The invention proposes a method for controlling a powertrain unit comprising a primary shaft coupled to an engine via a main clutch and driving a secondary shaft, and comprising a torque bypass clutch interposed between the engine output shaft and the seco...
Motor vehicle and method for operating the vehicle, particularly for rocking free and/or manoevering
https://drivepatents.com/patents/1099634 · 18 Dec 2002
A clutch device (16) operates as a multiple/double clutch with first (18) and second (20) clutch mechanisms allocated to first (24) and second (26) gear selector shafts respectively in order to choose whether to link a drive shaft (22) for a drive unit (12...
https://drivepatents.com/patents/1099946 · 4 Dec 2002
A control system (60) and calibration method are provided for a vehicle drive line having an automated master friction clutch (14). The control system (60) utilizes engine torque data supplied by a serial communication data link to identify a clutch contro...