Apparatus for regulating the rotation of a hydraulically-operated cooling fan

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4348990
SERIAL NO

06211451

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Importance

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Abstract

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A regulation apparatus for determining the flow of fluid to a hyraulically-operated cooling fan of an air-cooled internal combustion engine includes an electromagnetic valve connected in the fluid line to the cooling fan, a control unit which sends a signal to the electromagnetic valve to control its operation, and multiple sensor elements which are positioned in or near the engine to detect the various parameters which affect its operation, the sensor elements sending electrical input signals to the control unit.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Kloeckner-Humboldt-Deutz AGBOTH OF8

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arbeiter, Erich Plochingen, DE 2 32
Nolte, Albert Cologne, DE 5 38
Schleiermacher, Herbert Bruhl, DE 11 73

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MERCK & CO., INC. (1)
* 4665052 Renin inhibitors containing homophe.sup.8 and a C-terminal amide cycle 6 1984
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 4461246 Hydraulically operated fan assembly for a heat exchange assembly 13 1982
 
VOITH TURBO GMBH & CO. KG (3)
6910330 Method for controlling the power consumption of a hydrodynamic clutch by controlling the volumetric efficiency and a hydrodynamic clutch 1 2001
7254942 Temperature-monitored hydrodynamic machine 0 2005
* 2005/0198,948 Temperature-supervised hydrodynamic machine 0 2005
 
KHD Canada, Inc. (1)
* 4487169 Electronic control unit for internal combustion engines 3 1982
 
CATERPILLAR S.A.R.L. (1)
* 2008/0051,974 Device and Method for Controlling Variable Input/Output Speed Ratio Clutch 2 2005
 
Nippondenso Co., Ltd. (1)
* 4475485 Engine cooling system control apparatus 47 1983
 
Rockford Powertrain, Inc. (5)
* 4489680 Engine temperature control system 35 1984
* 5667045 Continuously variable fan drive clutch arrangement 35 1995
* 5947247 Continuously variable fan drive clutch 19 1997
* 5937979 Continuosly variable fan drive clutch 18 1997
* 5855266 Fan clutch for vehicles configured for low engine speed 10 1997
 
DANFOSS POWER SOLUTIONS INC. (1)
* 5531190 Electrohydraulic fan control 22 1994
 
AGENCY FOR DEFENSE DEVELOPMENT (1)
6591174 Cooling system controller for vehicle 13 2001
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
* 4798177 System for controlling rotational speed of hydraulically driven cooling fan of internal combustion engine, responsive to engine coolant and also fan propellant temperature 21 1987
 
CATERPILLAR INC. (1)
* 2005/0166,587 Independent metering valve assembly for multiple hydraulic load functions 1 2005
 
Kabushiki Kaisha Komatsu Seisakusho (1)
* 4479532 A system for controlling a hydraulic cooling fan for an engine as a _function of ambient and coolant temperatures 12 1981
 
SHIN CATERPILLAR MITSUBISHI LTD. (2)
6918248 Independent metering valve assembly for multiple hydraulic load functions 1 2001
* 2002/0148,223 Independent metering valve assembly for multiple hydraulic load functions 3 2001
* Cited By Examiner