User:Nikrape/sandbox

Citroen C2 C3 and Peugeot models fitted with SENSODRIVE ROBOTISED Gearbox

An electronically controlled manual gearbox, the SensoDrive features electronically managed clutch and gear-shift functions. As a result, the car has no clutch pedal and the gear lever which remains present - has no mechanical link with the 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. Linked to the C2/C3's multiplex electrics (CAN network), the gearbox control unit manages all the functions linked to the SensoDrive gearbox: start-up, automatic mode, safety functions, instrument cluster display. It diagnoses any operating failures and switches to degraded operation where necessary.

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 power flow, 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.