Method and control unit for operating a transmission
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsBrian McLean, Werner Pfau, Georg Kuss, Arnd Golle, Jochen Karl
Life of this patent
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Abstract
A method for operating a transmission of a vehicle, where the transmission couples a drive machine of the vehicle to a driven wheel of the vehicle and has different rotational speed transmission ratios. The method determines that a special load situation prevails or will prevail at the driven wheel of the vehicle. The method determines a shift time or a shift vehicle position, at which a load on the drive machine is less than or equal to a load threshold value. The method adapts the rotational speed transmission ratio of the transmission for the special load situation at the shift time or at the shift vehicle position.
Claims13
A method for operating a transmission of a vehicle equipped with a drive machine coupled to a driven wheel via the transmission, wherein the transmission has different rotational speed ratios;
- the method comprising the acts of:
- determining that a special load situation is present or will be present at the driven wheel of the vehicle;
- determining a shift time or a shift vehicle position at which a load on the drive machine is lower than or equal to a load threshold value;
- and
- adapting the rotational speed ratio of the transmission for the special load situation at the shift time or at the shift vehicle position.
An apparatus for a vehicle having a transmission which couples a drive machine of the vehicle to a driven wheel of the vehicle, the transmission permitting different rotational speed ratios, comprising:
- a control unit operatively configured to execute a control to:
- determine that a special load situation is present or will be present at the driven wheel of the vehicle;
- determine a shift time or a shift vehicle position at which a load on the drive machine is lower than or equal to a load threshold value;
- and
- cause the rotational speed ratio of the transmission to be changed for the special load situation at the shift time or at the shift vehicle position.
Dependencies are inferred from the claim text.