COOLING FAN CIRCUIT

PROBLEM TO BE SOLVED: To provide a cooling fan circuit capable of changing ratio of rotating speed of both of a fan motor of a radiator and a fan motor of an oil cooler in relation to each other at low costs, and capable of coping with the generation of spike pressure. SOLUTION: The fan motor 13 of...

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Bibliographic Details
Main Authors OKAMOTO KAZUNARI, OMURA SHINYA, TOYOURA NOBUMI
Format Patent
LanguageEnglish
Published 22.06.2006
Subjects
BLASTING
COOLING OF INTERNAL-COMBUSTION ENGINES
COOLING OF MACHINES OR ENGINES IN GENERAL
DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
ENGINE PLANTS IN GENERAL
FLUID-PRESSURE ACTUATORS
FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS
HEATING
HYDRAULICS OR PNEUMATICS IN GENERAL
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a cooling fan circuit capable of changing ratio of rotating speed of both of a fan motor of a radiator and a fan motor of an oil cooler in relation to each other at low costs, and capable of coping with the generation of spike pressure. SOLUTION: The fan motor 13 of the radiator and the fan motor 15 of the oil cooler are connected to a fan pump 11 in series to each other. The fan motor 13 of the radiator is operated by operating fluid supplied from the fan pump 11, and drives a fan 22 of a radiator for cooling engine cooling water. The fan motor 15 of the oil cooler is operated by operating fluid supplied through the fan motor 13 of the radiator, and drives a fan 26 of an oil cooler for cooling the operating fluid of a hydraulic circuit 24. A bypass passage 27 is connected in parallel with the fan motor 15 of the oil cooler, and a relief valve 28 capable of changing set pressure is provided in the bypass passage 27. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040351587