Cooling device for vehicle

• US 7,918,193 B2
• Filed: 01/13/2010
• Issued: 04/05/2011
• Est. Priority Date: 02/08/2006
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kojima, Toshihiko
• Primary Examiner(s): Huynh; Hai H
• Application Number:
  US12/656,009
• Publication Number:
  US 20100116229A1
• Time in Patent Office: 447 Days
• Field of Search: 123/41.04, 123/41.11, 123/41.29, 123/41.3, 123/41.48, 123/41.49, 123/41.54, 123/41.56, 123/41.6, 123/41.62, 123/41.63, 123/41.65
• US Class Current: 123/41.04
• CPC Class Codes: B60H 1/322 for improving the stop or idling operation of the engine
• CPC Class Codes: B60H 2001/3248 related to pressure
• CPC Class Codes: B60H 2001/3266 related to the operation of the vehicle
• CPC Class Codes: B60H 2001/3277 to control the air flow
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/08 Air inlets for cooling; Shutters or blinds therefor radiator or grille guards B60R19/52
• CPC Class Codes: F01P 11/0295 Condensers for radiators
• CPC Class Codes: F01P 2003/185 arranged in parallel
• CPC Class Codes: F01P 2005/025 using two or more air pumps
• CPC Class Codes: F01P 2005/046 with electrical pump drive
• CPC Class Codes: F01P 2025/04 Pressure
• CPC Class Codes: F01P 5/04 Pump-driving arrangements
• CPC Class Codes: F01P 7/08 by cutting in or out of pumps
• CPC Class Codes: F01P 7/084 actuated electromagnetically
• CPC Class Codes: F02N 11/0818 Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
• CPC Class Codes: F02N 2200/0806 Air condition state
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/88 Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

A cooling device for a vehicle is provided at a vehicle comprising an engine control unit which stops an engine due to establishment of engine stoppage conditions and restarts the engine due to establishment of engine restart conditions. The cooling device for a vehicle is able to cool a coolant within a heat exchanger for cooling by cooling wind, which is guided from an exterior of the vehicle, passing through the heat exchanger for cooling. Cooling by driving force of either one of an electric motor or the engine can be selected in accordance with preset conditions.

Claims

1. A vehicle cooling device, comprising:

a heat exchanger which cools coolant by a cooling wind;

a first cooling fan and a second cooling fan which are respectively disposed along a vehicle front-rear direction with respect to the heat exchanger and which are capable to be rotated and driven respectively by different driving units, the first cooling fan being capable to guide an air at a vehicle front side to a vehicle rear side as the cooling wind by being rotated and driven, and the second cooling fan being disposed at a vehicle front side of the first cooling fan;

a first fan shroud enclosing a periphery of the first cooling fan;

a second fan shroud enclosing a periphery of the second cooling fan;

a first ventilating unit formed at the first fan shroud, and impeding passage of the cooling wind through the first fan shroud when the first cooling fan is driven, and allowing passage of cooling wind through the first fan shroud when the second cooling fan is driven; and

a second ventilating unit formed at the second fan shroud, and impeding passage of the cooling wind through the second fan shroud when the second cooling fan is driven, and allowing passage of the cooling wind through the second fan shroud when the first cooling fan is driven.

2. The vehicle cooling device of claim 1, wherein the heat exchanger comprises first and second heat exchangers which respectively cool different coolants and which are arranged in the vehicle front-rear direction.

3. The vehicle cooling device of claim 1, wherein the second cooling fan and the second fan shroud are disposed at a rear side, in the vehicle front-rear direction, of the heat exchanger, and the first cooling fan and the first fan shroud are disposed at the vehicle rear side of the second cooling fan and the second fan shroud.

4. The vehicle cooling device of claim 1, wherein the second cooling fan and the second fan shroud are disposed at the vehicle front side of the heat exchanger, and the first cooling fan and the first fan shroud are disposed at a vehicle rear side of the heat exchanger.

5. The vehicle cooling device of claim 1, wherein the first and second ventilating units comprise ventilation openings of the cooling wind which are formed in the first and second fan shrouds, and blocking members which are capable to open and close the respective ventilation openings.

6. The vehicle cooling device of claim 5, wherein the blocking members comprise curtain-like members which are disposed at the vehicle rear sides of the ventilation openings and which are capable to open and close the ventilation openings in accordance with a pressure difference between the vehicle front side and the vehicle rear side of the ventilation openings.