Internal-combustion engines – Cooling – Automatic coolant flow control
Patent
1974-08-21
1976-03-09
Myhre, Charles J.
Internal-combustion engines
Cooling
Automatic coolant flow control
123 4102, 236100, 417222, F01P 702
Patent
active
039424863
ABSTRACT:
Conventional engine cooling systems include fans driven at speeds proportal to engine speed, thereby producing excessive cooling at higher engine speeds. It is proposed herein to limit or control the fan speed by utilizing a drive mechanism that is controlled by a thermal power element responsive to coolant temperature. The control element is arranged to vary the displacement of a variable displacement pump that is driven from the engine. The pump output is delivered to a hydraulic motor that drives the fan. Variations in pump displacement produce varying hydraulic motor speeds, hence varying fan speeds. This is particularly applicable to powertrains using hydrokinetic or hydromechanical transmissions which require high cooling capacity at low engine speeds.
REFERENCES:
patent: 1256709 (1918-02-01), Ludeman
patent: 2594460 (1952-04-01), Lauck
patent: 3131269 (1964-04-01), Asakawa
patent: 3204411 (1965-09-01), Stockton
patent: 3234793 (1966-02-01), Vernet
patent: 3354978 (1967-11-01), Budzich
patent: 3386065 (1968-05-01), Algino
patent: 3394682 (1968-07-01), Bensinger
patent: 3563093 (1971-02-01), Scherer
patent: 3710765 (1973-01-01), Dorsch
Edelberg Nathan
Gibson Robert P.
McRae John E.
Myhre Charles J.
O'Connor Daniel J.
LandOfFree
Hydraulic fan drive system speed control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic fan drive system speed control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic fan drive system speed control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-825742