发明名称 |
Hydraulic fan drive system employing binary control strategy |
摘要 |
<p>A hydraulically controlled fan drive system for controlling the cooling of an engine and having a method of engagement includes a housing assembly containing a hydraulic fluid and an engaging circuit. The engaging circuit includes a pitot tube (152) coupled within the housing assembly that receives at least a portion of the hydraulic fluid as the housing assembly rotates to drive a clutch pack (156) (and coupled fan) via static pressure. A fluid controller having binary control adjusts the static pressure within the pitot tube at a given rotational speed, thereby controlling the engagement of the clutch pack to a fully engaged drive (utilizing friction type engagement), a fully disengaged drive, and at least two partially engaged clutch positions (i.e. partially engaged utilizing a wet viscous type clutch engagement). To control static pressure release, the fluid controller may utilize a dual spool system valving arrangement or a parallel fixed orifice binary control. <IMAGE></p> |
申请公布号 |
EP1510716(B1) |
申请公布日期 |
2007.11.21 |
申请号 |
EP20040254953 |
申请日期 |
2004.08.18 |
申请人 |
BORGWARNER INC. |
发明人 |
ROBB, NEIL E.;IGNATOVICH, JAMES E.;PICKELMAN, DALE M.;MALOTT, THEODORE A.;HART, GARY E. |
分类号 |
F16D43/284;F01P7/04;F01P7/08 |
主分类号 |
F16D43/284 |
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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