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US 8,978,799 B2Granted
Drive train having a wet starting clutch for hybrid applications
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJohannes Arnold, Oliver Noehl, Ivo Agner
Life of this patent
Estimating the term…
Abstract
A starting clutch running in oil is present in the drive train of a motor vehicle which has an internal combustion engine and a starter generator. The rotor of the starter generator is supported on a clutch cover, at least indirectly, and the clutch cover is rotationally fixed to the clutch bell of the transmission.
Claims17
A drive train in a motor vehicle, comprising:
- an internal combustion engine;
- and
- a starter generator,
- wherein a rotational connection in power flow between the internal combustion engine and the starter generator and between the internal combustion engine and the transmission is established by a starting clutch running in oil,
- wherein the starting clutch has an outer disc carrier connected to the starter generator, an inner disc carrier connected to the internal combustion engine, and a plurality of inner clutch discs interspaced by a plurality of outer clutch discs, wherein the inner discs are mounted on the inner disc carrier so that they rotate with the inner disc carrier and are axially movable on the inner disc carrier, and the outer discs are mounted on the outer disc carrier so that they rotate with the outer disc carrier and are axially movable on the outer disc carrier, and the rotor of the starter generator is substantially fixed with respect to rotation with the outer disc carrier when the starting clutch is in an open state and when the starting clutch is in a closed state,
- wherein the rotor of the starter generator is arranged in a rotationally fixed manner on a rotor carrier and the rotor carrier is mounted on a clutch cover and the clutch cover is connected in a rotationally fixed and oil-tight manner to a clutch bell of a transmission,
- wherein the clutch cover is arranged between the rotor carrier and the outer disc carrier, whereby the starter generator is separated from an oil region of the starting clutch and the starter generator runs in a dry region, and
- wherein a seal is arranged between the outer disc carrier and the clutch cover.
5 more elements
A drive train in a motor vehicle, comprising:
- an internal combustion engine;
- and
- a starter generator,
- wherein a rotational connection in power flow between the internal combustion engine and the starter generator and between the internal combustion engine and the transmission is established by a starting clutch running in oil,
- wherein the starting clutch has an outer disc carrier connected to the starter generator, an inner disc carrier connected to the internal combustion engine, and a plurality of inner clutch discs interspaced by a plurality of outer clutch discs, wherein the inner discs are mounted on the inner disc carrier so that they rotate with the inner disc carrier and are axially movable on the inner disc carrier, and the outer discs are mounted on the outer disc carrier so that they rotate with the outer disc carrier and are axially movable on the outer disc carrier, and the rotor of the starter generator is substantially fixed with respect to rotation with the outer disc carrier when the starting clutch is in an open state and when the starting clutch is in a closed state,
- wherein the rotor of the starter generator is arranged in a rotationally fixed manner on a rotor carrier and the rotor carrier is mounted on a clutch cover and the clutch cover is connected in a rotationally fixed and oil-tight manner to a clutch bell of a transmission,
- wherein the clutch cover is arranged between the rotor carrier and the outer disc carrier, whereby the starter generator is separated from an oil region of the starting clutch and the starter generator runs in a dry region, and
- wherein a rotor carrier and an outer disc carrier are one of formed in one piece, caulked to one another, and welded to one another.
5 more elements
A drive train in a motor vehicle, comprising:
- an internal combustion engine;
- and
- a starter generator,
- wherein a rotational connection in power flow between the internal combustion engine and the starter generator and between the internal combustion engine and the transmission is established by a starting clutch running in oil,
- wherein the starting clutch has an outer disc carrier connected to the starter generator, an inner disc carrier connected to the internal combustion engine, and a plurality of inner clutch discs interspaced by a plurality of outer clutch discs, wherein the inner discs are mounted on the inner disc carrier so that they rotate with the inner disc carrier and are axially movable on the inner disc carrier, and the outer discs are mounted on the outer disc carrier so that they rotate with the outer disc carrier and are axially movable on the outer disc carrier, and the rotor of the starter generator is substantially fixed with respect to rotation with the outer disc carrier when the starting clutch is in an open state and when the starting clutch is in a closed state,
- wherein the rotor of the starter generator is arranged in a rotationally fixed manner on a rotor carrier and the rotor carrier is mounted on a clutch cover and the clutch cover is connected in a rotationally fixed and oil-tight manner to a clutch bell of a transmission,
- wherein the clutch cover is arranged between the rotor carrier and the outer disc carrier, whereby the starter generator is separated from an oil region of the starting clutch and the starter generator runs in a dry region, and
- wherein a bearing between the rotor and the clutch cover is pretensioned by means of a pretensioning spring, the pretensioning spring bearing against a transmission input shaft.
5 more elements
Dependencies are inferred from the claim text.