Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1978-12-06
1980-02-26
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60456, 60468, 60484, 91419, 123 4112, F15B 1116
Patent
active
041899199
ABSTRACT:
A vehicle engine accessory drive system is disclosed including a hydraulic fan motor (41) and a power steering gear mechanism SG in series flow relationship. The vehicle power steering pump P is the sole source of fluid for the system and has its flow control setting at a flow rate X, which is substantially greater than the flow rate Z required by the power steering gear SG. The motor-valve apparatus includes a valve portion (43), including a bypass valve portion (43), including a bypass valve piston (113) connected in parallel across the fan motor (41), and operable to permit fluid flow from the inlet passage (83) to the outlet passage (91) at a flow rate which is at least a portion of X. The bypass valve piston (113) is biased toward the bypass position by the fluid pressure in the inlet passage (83), and is biased toward the closed position by fluid pressure in a signal chamber (115). Fluid communication between the signal chamber (115) and the outlet passage (91), and therefore, the fluid pressure in the signal chamber (115), is controlled by a pilot valve assembly (127), including a poppet valve member (151), which is biased toward a closed position by the force of an electromagnetic coil (139).
REFERENCES:
patent: 2777287 (1957-01-01), Tweedale
patent: 2948268 (1960-08-01), Roper et al.
patent: 3055473 (1962-09-01), Oldberg et al.
patent: 3659567 (1972-05-01), Murray
Eaton Corporation
Geoghegan Edgar W.
Kasper L.
McCloskey R. J.
Yakimow J.
LandOfFree
Motor-valve apparatus for hydraulic fan drive system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor-valve apparatus for hydraulic fan drive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor-valve apparatus for hydraulic fan drive system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2108437