摘要:
The power train of a motor vehicle employs a hybrid drive including a combustion engine and an electrical machine. The transmission of the power train is shiftable into different gears in dependency upon the operating conditions of the vehicle. Such conditions include a traction condition when the vehicle is propelled by the engine and/or by the electrical machine, a coasting condition when the vehicle is being decelerated with attendant conversion of kinetic energy into electrical and/or rotational energy and storage of converted energy, a cold starting condition when the cold engine is started by the electrical machine, and a warm starting condition when the hot engine is started by the electrical machine and/or by at least one flywheel.
摘要:
The hybrid drive train has an internal combustion engine connected to a first input shaft via a first clutch and connected to a second input shaft via a second clutch. An electric machine is connected to the second input shaft. The first input shaft is coupled to an output shaft via a first gear, and the second input shaft is coupled to the output shaft via two second gears. In the method for operating the hybrid, the first gear is engaged and torque is applied by the engine. To change, one of the second gears is engaged, engine torque is reduced by slipping the clutch while electric machine torque is increased. To change again, electric machine torque is reduced to zero, the other second gear is engaged while engine torque transmitted via the first clutch is increased by reducing slipping of the first clutch.
摘要:
A method for adapting torque characteristic in a disengaging clutch arranged in a vehicle hybrid drive train between an internal combustion engine and an electrical machine connected to a driven wheel, include the following steps: deciding the engine can be disconnected; switching the engine off and opening the clutch; detecting the time gradient of rotational speed of the engine with it switched off and the clutch opened; partially closing the clutch when rotational speed of the engine falls below a predetermined value, and detecting the time gradient of rotational speed of the engine with the clutch partially closed; determining the clutch torque transmitted by the partially closed clutch by evaluating detected time gradients of rotational speed of the engine; and adapting the characteristic of the clutch with the aid of the determined clutch torque transmitted by the partially closed clutch.
摘要:
A torque transmission unit which has a first centrifugal mass that can be non-rotatably associated with an internal combustion engine and a second centrifugal mass that is connected downstream of the first mass and can be associated with a transmission. The second centrifugal mass has a rotor of an electric machine for transmitting a torque that can be electrically generated to the second centrifugal mass and a centrifugal force pendulum for reducing torsional vibrations.