Punch Powertrain Psa E-transmissions N. V.

Bas Gerard Vroemen

A transmission system for a vehicle comprises a first partial transmission with a first controllable clutch and a second partial transmission with a second controllable clutch each forming a respective transmission path between an input and a common output (to), the first and the second controllable clutches having first and second actuators, respectively, to control an operational state of said controllable clutches. A controller is provided to control the first and the second actuators, the controller being configured to selectively assume one of a plurality of control modes. These include amongst others a safety control mode which is selected upon detecting that a value of an acceleration of the vehicle is lower than a negative threshold value.

Transmission system for a vehicle, and control method for a transmission

A powertrain for a vehicle is disclosed that includes an electromagnetic driving unit () and a transmission module () having a controllable clutch () the powertrain further includes a control system to control the electromagnetic driving unit and to control the clutch. The controller has a safety operational mode wherein it controls an engagement of the controllable clutch with a feedback loop in which a desired extent of engagement is positively correlated to a difference between an extent of slip as indicated by the slip indicator and a positive reference value for the extent of slip, wherein the slip indicator indicates the extent of slip with a sign that is the product of the sign of the difference between the rotational speed of the input shaft and a rotational speed of the output shaft and a desired driving torque sign.

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Eindhoven, Belgium

Bas Gerard Vroemen