Powertrain of a motor vehicle and method for controlling said powertrain
First Claim
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1. A motor vehicle powertrain comprising:
- a controlled power source;
a clutch;
an automatically shifted transmission without a hydrodynamic torque converter;
a data transfer system enabling data to be exchanged between the component parts of the powertrain;
an additional power source distinct from the controlled power source; and
a control system for producing a correction value for the power source torque on the basis of a comparison of the real behavior of the powertrain with a modeled behavior of a powertrain provided with a hydrodynamic torque converter;
wherein the control system controls the additional power source to provide additional torque depending on said correction value, such that the additional torque provided by the additional power source is combined with the torque provided by the controlled power source to provide a greater torque than can be provided by the controlled power source alone, and such that for a particular gas pedal setting, the additional torque provided by the additional power source approximately corresponds to the increased torque provided by the hydrodynamic torque converter of the modeled powertrain at the same particular gas pedal setting.
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Abstract
The power train (1) includes a controlled drive source (3), a clutch (6), an automatically shifting transmission (7) and a data transmission device (2). The power train contains an additional drive source (12) and is fitted with a control system by means of which a correction value (K pid) for the drive source torque is generated on the basis of the comparison of the actual behavior of the drive train with a modeled behavior of a drive train fitted with a hydrodynamic torque converter. The behavior of a torque converter is simulated by a regulating circuit (21-27).
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Citations
12 Claims
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1. A motor vehicle powertrain comprising:
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a controlled power source; a clutch; an automatically shifted transmission without a hydrodynamic torque converter; a data transfer system enabling data to be exchanged between the component parts of the powertrain; an additional power source distinct from the controlled power source; and a control system for producing a correction value for the power source torque on the basis of a comparison of the real behavior of the powertrain with a modeled behavior of a powertrain provided with a hydrodynamic torque converter; wherein the control system controls the additional power source to provide additional torque depending on said correction value, such that the additional torque provided by the additional power source is combined with the torque provided by the controlled power source to provide a greater torque than can be provided by the controlled power source alone, and such that for a particular gas pedal setting, the additional torque provided by the additional power source approximately corresponds to the increased torque provided by the hydrodynamic torque converter of the modeled powertrain at the same particular gas pedal setting. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling powertrain comprising a controlled power source, a clutch, an automatically shifted transmission without a hydrodynamic torque converter and a data transfer system enabling data to be exchanged between the component parts of the powertrain, an additional power source distinct from the controlled power source, and a control system comprising the steps of:
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producing a correction value for the powertrain torque on the basis of a comparison of a real behavior of the powertrain without a hydrodynamic torque converter with a modeled behavior of a powertrain provided with a hydrodynamic torque converter, controlling said additional power source to provide for an additional torque depending on said correction value, such that the additional torque provided by the additional power source is combined with the torque provided by the controlled power source to provide a greater torque than can be provided by the controlled power source alone, and such that for a particular gas pedal setting, the additional torque provided by the additional power source approximately corresponds to the increased torque provided by the hydrodynamic torque converter of the modeled powertrain at the same particular gas pedal setting. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification