Power train for use in motor vehicles and the like
First Claim
1. A power train for a motor vehicle, said power train comprising a combustion engine with a driving shaft turning at a first rpm rate, at least one torque-coupling device, a transmission with a transmission input shaft, and an electro-mechanical energy converter with a stator and with a rotor and an energy-converter shaft turning at a second rpm rate, said electro-mechanical energy converter being operable as a motor and as a generator and having an interactive rotary connection to the driving shaft;
- wherein the electromechanical energy converter is operable in a first mode in which the torque flows from the electro-mechanical energy converter to the combustion engine, and a second mode in which the torque flows from the combustion engine to the electro-mechanical energy converter;
wherein the interactive rotary connection automatically sets itself to one of at least two rpm ratios depending on whether the electro-mechanical energy converter is working in the first or second mode, said rpm ratios being defined as quotients of the first rpm rate divided by the second rpm rate;
wherein the interactive rotary connection comprises at least one rotary transfer device arranged between the electro-mechanical energy converter and the combustion engine; and
wherein the at least one rotary transfer device comprises a planetary gear mechanism with at least one ring gear, at least one sun gear, and at least one planet carrier with at least one planet gear, the transfer device being configured such that that depending upon a sense of rotation thereof and absent activation of an actuator, the transfer device causes the planetary gear mechanism to lockingly engage a non-rotating component in the first mode and under the second mode causes components of the planetary gear mechanism to lockingly engage one another.
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Abstract
A power train for a motor vehicle includes a combustion engine, a clutch or other torque-coupling device, a transmission, and an electro-mechanical energy converter that is operable at least as a motor and as a generator. The electro-mechanical energy converter is coupled to the output shaft of the combustion engine through a torque transfer device with at least two rpm ratios that automatically set themselves according to whether the vehicle is operating in a start-up mode or in a driving mode.
111 Citations
25 Claims
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1. A power train for a motor vehicle, said power train comprising a combustion engine with a driving shaft turning at a first rpm rate, at least one torque-coupling device, a transmission with a transmission input shaft, and an electro-mechanical energy converter with a stator and with a rotor and an energy-converter shaft turning at a second rpm rate, said electro-mechanical energy converter being operable as a motor and as a generator and having an interactive rotary connection to the driving shaft;
- wherein the electromechanical energy converter is operable in a first mode in which the torque flows from the electro-mechanical energy converter to the combustion engine, and a second mode in which the torque flows from the combustion engine to the electro-mechanical energy converter;
wherein the interactive rotary connection automatically sets itself to one of at least two rpm ratios depending on whether the electro-mechanical energy converter is working in the first or second mode, said rpm ratios being defined as quotients of the first rpm rate divided by the second rpm rate;
wherein the interactive rotary connection comprises at least one rotary transfer device arranged between the electro-mechanical energy converter and the combustion engine; and
wherein the at least one rotary transfer device comprises a planetary gear mechanism with at least one ring gear, at least one sun gear, and at least one planet carrier with at least one planet gear, the transfer device being configured such that that depending upon a sense of rotation thereof and absent activation of an actuator, the transfer device causes the planetary gear mechanism to lockingly engage a non-rotating component in the first mode and under the second mode causes components of the planetary gear mechanism to lockingly engage one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- wherein the electromechanical energy converter is operable in a first mode in which the torque flows from the electro-mechanical energy converter to the combustion engine, and a second mode in which the torque flows from the combustion engine to the electro-mechanical energy converter;
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25. A power train for a motor vehicle, said power train comprising a combustion engine with a driving shaft turning at a first rpm rate, at least one torque-coupling device, a transmission with a transmission input shaft, and an electro-mechanical energy converter with a stator and with a rotor and an energy-converter shaft turning at a second rpm rate, said electro-mechanical energy converter being operable as a motor and as a generator and having an interactive rotary connection to the driving shaft;
- wherein the electromechanical energy converter is operable in a first mode in which the torque flows from the electro-mechanical energy converter to the combustion engine, and a second mode in which the torque flows from the combustion engine to the electro-mechanical energy converter;
wherein the interactive rotary connection automatically sets itself to one of at least two rpm ratios depending on whether the electro-mechanical energy converter is working in the first or second mode, the self-setting of the interactive rotary connection being based solely on movement of components thereof and based on a sense of rotation thereof and free of any manipulation by an actuator, said rpm ratios being defined as quotients of the first rpm rate divided by the second rpm rate;
wherein the interactive rotary connection comprises at least one rotary transfer device arranged between the electro-mechanical energy converter and the combustion engine; and
wherein the at least one rotary transfer device comprises a planetary gear mechanism with at least one ring gear, at least one sun gear, and at least one planet carrier with at least one planet gear.
- wherein the electromechanical energy converter is operable in a first mode in which the torque flows from the electro-mechanical energy converter to the combustion engine, and a second mode in which the torque flows from the combustion engine to the electro-mechanical energy converter;
Specification