Luk Lamellen Und Kupplungsbau Gmbh

Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Robin John Warren

Charles John Jones

Richard B Moseley

Ian Duncan Kennedy

James Anthony Lethbridge

A motor vehicle transmission system blocks the disengagement of the clutch ( ) and the shifting of the transmission ( ) into neutral for starting the engine ( ), if the transmission is already in gear at the time the system is switched on. The blocking is canceled if the main brake ( ) is applied and the application of the brake ( ) is confirmed by a brake sensor ( ), or if the driver moves a shifter element ( ) from a non-neutral shift-gate position to the neutral shift-gate position after the system has been turned on.

Motor vehicle transmission system

An automated multi-ratio transmission has a gear-engaging mechanism with a first actuator to move a selector member in a first direction to select a gear ratio, and a second actuator to move the selector member in a second direction to engage the selected gear ratio. The vehicle may be started from stand-still in either a forward or reverse start-up gear ratio, both of which are engaged from an end position of the range of movement of the selector member. In the start-up phase of the vehicle, an automated control means drives the first actuator to the appropriate selector position for either the forward or reverse start-up gear and then drives the second actuator to engage the desired start-up gear.

Automated transmission systems

A torque-transmitting system for vehicles has a main drive clutch operable by means of a clutch-actuator, a transmission, a shift mechanism for setting the transmission ratio, a selector lever allowing the driver to select between a neutral mode or a drive mode of the transmission, and electronic control means for controlling the clutch actuator and the shift. mechanism. The electronic control means will cause the clutch-actuator to disengage the clutch when the engine is started and to re-engage the clutch if the transmission has been left in neutral mode for a preprogrammed time period while the vehicle is standing still, so as to turn the input shaft of the transmission and thereby warm up the transmission oil.

Torque-transmitting system

A vehicle transmission system has a main drive clutch ( ) with a clutch-actuator ( ), a transmission ( ) with a gear-engaging mechanism ( ), a driver-operable gear-selector lever ( ), and an electronic control means ( ) to control the clutch-actuator ( ) and the gear-engaging mechanism ( ). When the vehicle is started up from a standstill condition, the control means disengages the clutch and automatically shifts the transmission into a predetermined start-up gear. According to the invention, the electronic control means ( ) is designed to allow the driver to operate the gear-selector lever ( ) to select a higher start-up gear than the predetermined start-up gear that is selected automatically by the electronic control means.

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Leamington Spa, United Kingdom

Robin John Warren