Zexel Gmbh

Hiromi Kohno

Masuhiro Otsuka

Hiroyuki Soda

Masuhiro Ohtsuka

Tsutomu Takahashi

Yusi Satoh

In a method for correcting clutch data used for controlling the operation of a friction clutch connected with an electronically controlled transmission system, the clutch data includes meet position data stored in a memory and the stored meet position data is compared with a first learned meet position data obtained after power is applied to the transmission system. The old data stored in the memory is replaced with the first learned meet position data when the difference between the old data and the first learned meet position data is greater than a prescribed value. The old data is corrected by the use of the old data and the learned data when the difference is not greater than the prescribed value even if the learned data is the first learned meet position data.

Correcting method for data used for control operation of vehicular clutch

In a method for correcting clutch data used for controlling the engaging/disengaging operation of a friction type clutch, meet position data is updated only when the clutch temperature is less than a prescribed value and the clutch data is corrected by the use of the updated meet position data, whereby learned meet position data affected by clutch temperature increase is prevented from being used for the correction of the clutch data. As a result, clutch data is properly corrected regardless of change in the clutch temperature.

Method for correcting clutch control data in accordance with disk

In an engine starting system for a vehicle with an automatic transmission system including a clutch operated by an actuator, the system comprises a detector for detecting whether an engine has stalled for a reason other than that an ignition switch has been turned off, and a control signal for disengaging the clutch is supplied to the actuator when the ignition switch is turned to its start position in the case where it is detected by the detector that the engine has stalled. After this, the current necessary for activating the starter motor is supplied to the starter motor irrespective of the position selected by a selector whenever the ignition switch is turned to the start position. The clutch needs not necessary be disengaged and it is possible to drive the starter motor with the clutch engaged.

System for starting an internal combustion engine for powering vehicles

In a system for controlling a clutch for vehicle having an automatic gear-transmission control system, the clutch is controlled so as to be disengaged when a gear of the transmission is in a prescribed low-speed gear position at which strong engine braking power can be expected and fuel-powered operation of an engine for powering the vehicle has stopped during the running of the vehicle, whereby it can be prevented to apply sudden engine braking power to the vehicle.

Method and apparatus for controlling a clutch for vehicles

In a method for controlling the gear-shift operation of a gear transmission for a vehicle in accordance with the running speed of the vehicle, in response to a command for shifting the transmission from its neutral position, the transmission is first shifted into a prescribed high gear position to detect the actual vehicle running speed and a target gear position is determined on the basis of the resulting detected vehicle running speed, whereafter the transmission is shifted into the target position.

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Higashimatsuyama, Japan

Hiromi Kohno