发明名称 |
Apparatus for controlling actuating fluid pressure on vehicular friction clutch with compensation for decrease in friction coefficient at elevated temperature |
摘要 |
A control apparatus provided with an electromagnetic valve assembly to selectively change the variation rate of a fluid pressure to actuate the clutch in dependence on the degree of opening of the throttle valve for the vehicular engine, a pulse-generating logic circuit governs the operational sequence of the electromagnetic valves, and a temperature sensor which includes a reed relay located close to the clutch, a permanent magnet attached to the flywheel of the clutch and a heat-sensitive element capable of varying the magnetic flux density passing through the reed relay when the temperature of the clutch disc exceeds a predetermined temperature. A monostable multivibrator of the control circuit has a variable resistance r-c circuit, and the resistance is varied by a signal from the temperature sensor so that a pulse for determining the duration of a relatively high increase rate of the actuating pressure at an early stage of the clutch engagement can be prolonged to compensate for a decrease in the friction coefficient of the clutch disc at elevated temperatures.
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申请公布号 |
US4072220(A) |
申请公布日期 |
1978.02.07 |
申请号 |
US19760699174 |
申请日期 |
1976.06.23 |
申请人 |
NISSAN MOTOR COMPANY, LIMITED |
发明人 |
HAMADA, HIDEO |
分类号 |
B60W10/02;B60W10/04;F16D48/02;F16D48/06;(IPC1-7):B60K21/00 |
主分类号 |
B60W10/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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