Failure determination device for shutter device for vehicle

• Main Authors: SATO DAISUKE, MAKI HIDETAKA, OHNISHI HIROYUKI, OSHIMA YOSHIKAZU, ENDO MASATOSHI
• Format: Patent
• Language: English
• Published: 08.07.2015
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

A failure determination device for a shutter device for a vehicle, capable of accurately determining a failure of the shutter device in a short time. A condenser (11) for a refrigeration cycle for an air conditioner (32) is provided in the engine compartment of a vehicle (V). A grille shutter device (41) for introducing into the engine compartment outside air for cooling the condenser (11) by opening the grille shutter (47) is provided to the front grille (42) of the vehicle (V). A failure determination device (1) for a shutter device is configured in such a manner that the failure determination device (1) detects as a refrigerant pressure (PD) the pressure of a refrigerant discharged from the condenser (11) and determines a failure of the grille shutter device (41) on the basis of the detected refrigerant pressure (PD)(Steps 4 and 11 in FIG. 4 ). The determination of a failure of the grille shutter device (41) can be accurately performed in a short time because the failure is determined on the basis of the refrigerant pressure (PD) which changes at high speed in response to the opening and closing of the grille shutter (47).