Post by Lee on Jun 11, 2008 14:21:20 GMT
Information About Citroen's SensoDrive Gearbox
The SensoDrive gearbox is managed by a control unit, which controls two actuators. One actuator changes gears while the other, which is equipped with a facing wear compensation system, opens and closes the clutch. The gearbox control unit also dialogues with the engine control unit.
CITROËN C2, C3 and C3 Pluriel Sensodrive
The SensoDrive gearbox is managed by a control unit, which controls two actuators. One actuator changes gears while the other, which is equipped with a facing wear compensation system, opens and closes the clutch. The gearbox control unit also dialogues with the engine control unit.
SensoDrive Gear Lever 2003 - 2005
This sophisticated electronic management system takes into account all the parameters necessary for efficient gear-changing: gear lever, accelerator, brake, engine and gearbox rpm, vehicle speed, ABS, ESP, engine torque and temperature. In this way, when the gearbox control unit receives an order — in either operating mode — to change speeds, it briefly cuts off the engine’s powerflow, disengages the clutch, changes gears, engages the clutch and authorises power to be restored. These operations are sequenced as quickly as possible to minimise the break in acceleration.
SensoDrive Gear Lever 2005 Onwards
For vehicle start-up, the gearbox control unit closes the clutch in accordance with the accelerator position and the engine speed. With this high-precision servosystem, the driver remains in full control of the car in the most difficult situations (reverse parking, hillstarts) as well as on fast starts.
In automatic mode, gears are selected by the computer on the basis of the auto-adaptive shift patterns.
The control unit analyses the driver’s behaviour and the type of route (rising, falling, corner) as well as the vehicle load and surface grip in order to define the most appropriate gear speed.
The SensoDrive gearbox reaps the benefits of the experience acquired by PSA Peugeot Citroën with the auto-adaptive gearbox.
To avoid changing gears too frequently, gear shifts are conducted at different speeds during acceleration and deceleration.
The SensoDrive features two operating modes:
Manual Mode
Automatic Mode
SenoDrive Display Old and New Type
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The SensoDrive Gearbox
A Mechanical View of How The SensoDrive Works
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