发明名称 |
Auto-modulating hydraulic circuit and related method |
摘要 |
Disclosed is a modulating hydraulic circuit for controlling a clutch such as the clutch on a power takeoff (PTO) shaft. The circuit includes a throttling valve having (a) an inlet port for receiving hydraulic fluid from a source, and (b) a discharge port connected to the clutch. The discharge port is also connected to an accumulator which is at an accumulator pressure. The discharge port and the clutch are at a pressure generally proportional to the accumulator pressure. As accumlator pressure rises at a controlled rate, the clutch is progressively engaged. Optionally, the circuit includes a brake control valve for "softly" disengaging a PTO shaft brake as the accumulator pressure rises. A method for controlling the clutch includes flowing hydraulic fluid through hydraulic lines to a throttling valve connected to an accumulator and to the clutch, increasing pressure in the lines and progressively engaging the clutch.
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申请公布号 |
US5743366(A) |
申请公布日期 |
1998.04.28 |
申请号 |
US19960717684 |
申请日期 |
1996.09.23 |
申请人 |
CASE CORPORATION |
发明人 |
STOEVER, GUY T.;CLIFFORD, JIMMIE D. |
分类号 |
F16D48/02;(IPC1-7):F16D67/04;F16D25/12 |
主分类号 |
F16D48/02 |
代理机构 |
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