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US 9,937,920 B2Granted
Propulsion system for a vehicle
AssigneeScania CV AB
InventorsJohan Lindström, Mathias Björkman, Mikael Bergquist, Niklas Pettersson
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AssigneeScania CV AB
InventorsJohan Lindström, Mathias Björkman, Mikael Bergquist, Niklas Pettersson
Estimating the term…
A drive system for a vehicle comprises two electrical machines arranged between a combustion engine and an input shaft to a gearbox. The first machine rotor is connected with a planetary gear component, and the input shaft of the gearbox with another planetary gear component. The second machine rotor is connected with the output shaft of the combustion engine, which is also connected with another planetary gear component. A first locking means movable between a locked position, wherein the planetary gear's three components rotate at the same rotational speed, and a release position, wherein the components rotate at different rotational speeds. A second locking means movable between a locked position, and a release position wherein the combustion engine's output shaft is locked to a stationary element in the locked position and disconnected in the release position to rotate with the second machine rotor and a planetary gear component.
A drive system for a vehicle, wherein the drive system comprises an output shaft in a combustion engine, an input shaft of a gearbox, a first electrical machine comprising a stator and a rotor, a planetary gear comprising three components in the form of a sun wheel, a ring gear and a planetary wheel carrier, wherein the output shaft of the combustion engine is connected with a first of said components in the planetary gear, so that a rotation of such shaft leads to a rotation of such first of said components, wherein the input shaft of the gearbox is connected with a second of said components of the planetary gear, so that a rotation of such shaft leads to a rotation of such second of said components, and wherein the rotor of the electrical machine is connected with a third of said components in the planetary gear, so that a rotation of the rotor leads to a rotation of the third of said components, wherein the drive system also comprises a first locking means, which may be moved between a locked position in which two of said components are locked together, so that the three components rotate with the same rotational speed, and a release position in which the components are allowed to rotate at different rotational speeds, wherein the drive system comprises a second electrical machine with a stator and a rotor, connected with the output shaft of the combustion engine between the combustion engine and said first of said components, and a second locking means which may be moved between a locked position in which the output shaft of the combustion engine is locked to a stationary element in the vehicle, and a release position in which the combustion output shaft of the engine is disconnected from the stationary element, and free to rotate with the rotor of the second electrical machine and said first of said components.
A vehicle comprising a drive system wherein the drive system comprises an output shaft in a combustion engine, an input shaft of a gearbox, a first electrical machine comprising a stator and a rotor, a planetary gear comprising three components in the form of a sun wheel, a ring gear and a planetary wheel carrier, wherein the output shaft of the combustion engine is connected with a first of said components in the planetary gear, so that a rotation of such shaft leads to a rotation of such first of said components, wherein the input shaft of the gearbox is connected with a second of said components of the planetary gear, so that a rotation of such shaft leads to a rotation of such second of said components, and wherein the rotor of the electrical machine is connected with a third of said components in the planetary gear, so that a rotation of the rotor leads to a rotation of the third of said components, wherein the drive system also comprises a first locking means, which may be moved between a locked position in which two of said components are locked together, so that the three components rotate with the same rotational speed, and a release position in which the components are allowed to rotate at different rotational speeds, wherein the drive system comprises a second electrical machine with a stator and a rotor, connected with the output shaft of the combustion engine between the combustion engine and said first of said components, and a second locking means which may be moved between a locked position in which the output shaft of the combustion engine is locked to a stationary element in the vehicle, and a release position in which the combustion output shaft of the engine is disconnected from the stationary element, and free to rotate with the rotor of the second electrical machine and said first of said components.
Dependencies are inferred from the claim text.