Scania Cv Ab

Fredrik Sundén

Mattias Nilsson

Afram Kourie

Mats Liwell

Mikael Bergquist

Mathias Björkman

Niklas Pettersson

Johan Lindström

The invention relates to a method, performed by a control device, for driving at least one power consumer connected to a powertrain of a vehicle. The at least one propulsion unit comprises a first electrical machine and a second electrical machine, wherein the first electrical machine is connected to a first main shaft and the second electrical machine is connected to a second main shaft. A connection shaft is connected to the first electrical machine; and the at least one power consumer comprises a first power consumer connected to the first main shaft and/or a second power consumer connected to the connection shaft. The method comprising: controlling the powertrain to provide uninterrupted propelling torque on the first main shaft and/or on the connection shaft during a stand still condition of the output shaft of the gearbox and/or during a transition from a stand still condition to a rotational condition of the output shaft of the gearbox, and/or during gear shifting from one gear to another gear in the gearbox. The invention also relates to a vehicle comprising a powertrain, a computer program and a computer-readable medium.

Method for driving at least one power consumer connected to a powertrain

A method for shifting in a vehicle () with a hybrid powertrain (), the powertrain includes: a combustion engine (), an electric machine (), a gearbox () with an input shaft () and a main shaft (), wherein the combustion engine () and the electric machine () are connected to the input shaft (); and a lay shaft (), via gear sets (and) is connected to the input shaft () and the main shaft (), so that they form a split gear unit () and a main gear unit (). The method has the steps: a) to bring the main gear unit () into a substantially zero torque state, b) in the event the input shaft () and the lay shaft () must both be accelerated or decelerated: to initiate synchronization of the speed of the lay shaft () with, on the one hand, the speed of the input shaft (), and, on the other hand, the speed of the main shaft (), at a joint first point in time (t), c) to engage a gear in the split gear unit () when the speed of the lay shaft () has been synchronized with the speed of the input shaft () at a second point in time (t), and d) to engage a gear in the main gear unit () when the speed of the lay shaft () has been synchronized with the speed of the main shaft () at a third point in time (t). Also a hybrid powertrain () and a vehicle (), as well as a computer program (P) and a computer program product are disclosed, which perform the method.

Method for fast change of gears in a vehicle comprising a hybrid driveline

A method to control a hybrid powertrain () in a vehicle, the powertrain including a combustion engine (), an electric machine () and a gearbox () with an input shaft () and output shaft (), wherein the combustion engine () and the electric machine () are connected to the input shaft (). The method includes the steps of controlling the gearbox () to a neutral position; controlling the speed of the electric machine () to a predetermined speed, corresponding to a target speed for the input shaft () according to the next selected gear; engaging a gear in the gearbox (); controlling the electric machine (), so that the electric machine () accelerates or decelerates depending on a requested driving torque for the vehicle (); detecting when a control signal for the electric machine () corresponds to a predetermined signal value; and controlling the electric machine () to the requested driving torque. Also, a hybrid powertrain and a vehicle (), and a computer program (P) and a computer program product for performing the method are disclosed.

Method for controlling gear shifting in a hybrid driveline by use of an electric machine

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Hägersten, Sweden

Fredrik Sundén