[특허]Motor vehicle drive

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60K-041/02
출원번호	US-0305431 (2002-11-27)
우선권정보	DE-0058536 (2001-11-29)
발명자 / 주소	Boll, Wolf
출원인 / 주소	DaimlerChrysler AG
대리인 / 주소	Crowell & Moring LLP
인용정보	피인용 횟수 : 51 인용 특허 : 3

초록 ▼

A motor vehicle drive includes an electric motor and at least one clutch in the drive line between the electric machine and the driven wheels of a motor vehicle. If the special case occurs in which high torques have to be supplied by the electric motor when the vehicle speed is very low or when the

A motor vehicle drive includes an electric motor and at least one clutch in the drive line between the electric machine and the driven wheels of a motor vehicle. If the special case occurs in which high torques have to be supplied by the electric motor when the vehicle speed is very low or when the vehicle is stationary, the clutch is operated in a torque-transmitting slipping manner, ensuring that neither the electric machine nor the clutch are thermally overloaded.

대표청구항 ▼

1. Motor vehicle drive comprising:at least one electric machine;a clutch device including at least one clutch in a drive line between the electric machine and an output for driving wheels of the motor vehicle; anda control device which controls the clutch in a torque-transmitting slipping manner to

1. Motor vehicle drive comprising:at least one electric machine;a clutch device including at least one clutch in a drive line between the electric machine and an output for driving wheels of the motor vehicle; anda control device which controls the clutch in a torque-transmitting slipping manner to avoid thermal overloading both of the clutch and of the electric machine when, compared with normal operation, an increased temperature or increased waste heat arises in the electric machine when the speed is low or the motor vehicle is stationary and the torque of the electric machine is simultaneously high. 2. Motor vehicle drive according to claim 1, wherein the clutch device includes an automatic transmission with automatically operated selector clutches. 3. Motor vehicle drive according to claim 1, wherein the clutch device includes an automatic transmission including an upstream torque converter and a lock-up clutch for locking up the torque converter, and the lock-up clutch includes the at least one clutch. 4. Motor vehicle drive according to claim 1, wherein the electric machine includes at least two individually excitable electric windings, and the control device is able to excite the windings alternately, wherein one windings is unexcited to cool down while the other winding is excited to produce a driving torque, when, compared with normal operation, an increased temperature or increased waste heat arises in the electric machine when the speed is low or the motor vehicle is stationary and the torque of the electric machine is simultaneously high. 5. Motor vehicle drive according to claim 1, wherein the electric machine includes at least two individually excitable electric windings, and in that these windings can be excited alternately by the control device in the special operating case, thus avoiding a situation in which one winding in each case is excited for too long and allowing the waste heat to distribute itself uniformly between all the windings. 6. Motor vehicle drive according to claim 1, wherein the clutch device includes a plurality of clutches, and the clutches are operated alternately in torque-transmitting slipping mode by the control device to reduce the waste heat peaks in the individual clutches. 7. Motor vehicle drive according to claim 1, wherein the clutch device includes a plurality of clutches, and the clutches are operated together by the control device to reduce the waste heat peaks in the individual clutches. 8. Motor vehicle drive according to claim 1, further comprising a combustion engine to produce a driving torque of the motor vehicle. 9. Motor vehicle drive according to claim 1, wherein the at least one clutch is driven in a pulsed slipping manner. 10. Motor vehicle drive according to claim 1, wherein the electric machine includes an electric motor for driving a motor vehicle through a drive line. 11. Method of operating a motor vehicle drive that includes at least one electric machine and a clutch device including at least one clutch in a drive line between the electric machine and an output for driving wheels of the motor vehicle, comprising:controlling the at least one clutch of the clutch device in a torque-transmitting slipping manner to avoid thermal overloading both of the clutch and of the electric machine when, compared with normal operation, an increased temperature or increased waste heat arises in the electric machine when the speed is low or the motor vehicle is stationary and the torque of the electric machine is simultaneously high. 12. Method according to claim 11, wherein the clutch device includes an automatic transmission with automatically operated selector clutches. 13. Method according to claim 11, wherein the clutch device includes an automatic transmission including an upstream torque converter and a lock-up clutch for locking up the torque converter, and the lock-up clutch includes the at least one clutch. 14. Method according to claim 11, wherein the clutch device i ncludes a plurality of clutches, the method further comprising operating the clutches alternately in torque-transmitting slipping mode by the control device to reduce the waste heat peaks in the individual clutches. 15. Method according to claim 11, wherein the clutch device includes a plurality of clutches, the method further comprising operating the clutches together to reduce the waste heat peaks in the individual clutches. 16. Method according to claim 11, further comprising applying the at least one clutch in a pulsed slipping manner. 17. Method according to claim 11, wherein the electric machine includes an electric motor for driving a motor vehicle through a drive line.

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이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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