[특허]Arrangement for detecting a critical driving torque in a motor vehicle

Arrangement for detecting a critical driving torque in a motor vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-008/32 B60K-028/16 G05D-017/00 G01M-017/06
출원번호	US-0211961 (1994-04-21)
우선권정보	DE-4134831 (1991-10-22)
발명자 / 주소	Adler Uwe (Schweinfurt DEX) Drexl Hans-Jrgen (Schonungen DEX) Lutz Dieter (Schweinfurt DEX) Nagler Franz (Ottendorf DEX) Ochs Martin (Schweinfurt DEX) Schiebold Stefan (Schweinfurt DEX) Schmidt-Brcke
출원인 / 주소	Mannesmann Aktiengesellschaft (Dusseldorf DEX 03)
인용정보	피인용 횟수 : 64 인용 특허 : 0

초록 ▼

An apparatus for determining a critical driving torque and information representing the coefficient of friction at the wheel grip limit for a vehicle having a plurality of driven wheels. It is suggested that torque control devices be assigned to at least two of the driven wheels so that the ratio of the driving torques of the two driven wheels can be varied, wherein torque sensing device generate a torque signal corresponding to the magnitude of at least the greater of the driving torques of the driven wheels. A wheel slip sensing device is associated with the driven wheels and detects an increase in the slip of the wheel with the greater driving torque beyond a predetermined limit. The information on the coefficient of friction is generated depending on the magnitude of the detected driving torque of the wheel whose slip exceeds the limit. To determine the information concerning the coefficient of friction, the distribution of driving torque between the front axle and rear axle is periodically increased in an alternating manner. ..CL: An apparatus for determining information representing a critical driving torque at a driving wheel of a motor vehicle having a plurality of driving wheels, comprising: driving torque sensors for determining driving torque information corresponding to the magnitude of the respective driving torque of the respective driving wheel, speed sensors for determining speed information corresponding to the magnitude of the respective speed of the respective driving wheel, a computation circuit for determining and supplying information on the critical driving torque, electric motors for individually driving the driving wheels, and torque control devices for separately controlling the electric motors, the computation circuit comprising means for: (a) causing, at least at one of the driving wheels, a temporary increase in driving torque, from its current driving torque, a predetermined guantity beyond that of the other driving wheels, wherein the predetermined quantity is selected from the group consisting of a predetermined fixed amount and a predetermined percentage of the current driving torque of this driving wheel, (b) determining a speed differential by comparing speed information determined from the driving wheel with increased driving torque by its respective speed sensor with the speed information determined from at least one of the other driving wheels, which have a relatively lower driving torque, by its respective speed sensor for the purpose of detecting slip, (c) performing a step, when the computation circuit determines the speed differential does not exceed a given permissible relative speed differential, wherein a wheel grip limit is not exceeded, selected from the group consisting of (i) transmitting a signal with the information that the temporarily increased driving torque is not critical and (ii) causing the driving torque to be increased again by a greater amount, (d) transmitting a signal representing the critical driving torque when the given permissible relative speed differential is determined by the computation circuit, and (e) determining the critical driving torque, when the computation circuit determines the speed differential exceeds the given permissible relative speed differential, wherein the wheel grip limit is exceeded, and transmitting the critical driving torque as a signal for the purpose of an iterative approximation to the permissible relative speed differential by repeated temporary increases in the driving torque wherein at least the first of the repeated increases is smaller than its respectively preceding temporary increase in the driving torque.

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이 특허를 인용한 특허 (64)

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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Arrangement for detecting a critical driving torque in a motor vehicle 원문보기

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Arrangement for detecting a critical driving torque in a motor vehicle 원문보기

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