发明名称 |
Clutch control for locked power take off shaft during power take off clutch engagement |
摘要 |
A power take off (PTO) clutch control system for an agricultural tractor is disclosed herein. The PTO clutch is a hydraulic clutch which is operated by a proportional valve capable of pressurizing the clutch with hydraulic fluid at a pressure related to the pulse width of a pulse width modulated (PWM) control signal applied to the valve. The PWM signal is produced by a controller which monitors the input shaft speed and the output shaft speed. A first control signal is applied to the valve when both the input and output shaft speeds are greater than zero. A second control signal is applied to the valve when the input shaft speed has decreased by a predetermined amount and the output shaft speed is substantially zero.
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申请公布号 |
US5806640(A) |
申请公布日期 |
1998.09.15 |
申请号 |
US19970841266 |
申请日期 |
1997.04.29 |
申请人 |
CASE CORPORATION |
发明人 |
KALE, SATISH L. |
分类号 |
B60K17/28;F16D48/06;(IPC1-7):F16D67/04;F16D43/284 |
主分类号 |
B60K17/28 |
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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