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US 7,151,989 B2Granted
Twin-clutch gearbox and method for shifting an initial gear upwards into a target gear in the twin-clutch gearbox of a motor vehicle
AssigneeLuK Lamellen und Kupplungsbau Betelligungs KG
InventorJürgen Benz
Life of this patent
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Abstract
The invention relates to a method for shifting an initial gear upwards into a target gear in a twin-clutch gearbox of a motor vehicle. According to the invention, the engine torque (MMotor) of the vehicle is altered when a target gear is selected incorrectly and detected thus. The output torque (MOutput) is then reduced if the correct target gear is introduced. The invention also relates to a twin-clutch gearbox, especially for carrying out said method.
Claims15
A method of up-shifting a twin-clutch transmission of a vehicle, comprising:
- detecting an incorrectly pre-selected target gear;
- calculating a maximum output torque (MRed) for an engine in said vehicle, said MRed associated with operation of said transmission in a correct target gear;
- reducing a current output torque (MMotor) for said engine to equal said MRed;
- and,
- engaging said correct target gear.
2 more elements
A method of up-shifting a twin-clutch transmission in a vehicle, comprising:
- operating said transmission in a gear, wherein a torque MMotor for said engine is associated with operation in said gear;
- selecting a higher gear;
- calculating a torque MRed for said engine, said MRed associated with operation of said transmission in said higher gear;
- and,
- reducing said MMotor to equal said MRed, prior to engaging said higher gear.
2 more elements
Dependencies are inferred from the claim text.