Total cooling assembly for a vehicle having an internal combustion engine

• US 6,016,774 A
• Filed: 06/26/1998
• Issued: 01/25/2000
• Est. Priority Date: 12/21/1995
• Status: Expired due to Fees

• Current Assignee: Siemens Canada Limited (Siemens AG)
• Original Assignee: Siemens Canada Limited (Siemens AG)
• Inventors: Bokkers, Ron, Rossing, Bjorn, Joseph, Alex
• Primary Examiner(s): Wolfe, Willis R.
• Assistant Examiner(s): Hairston, Brian
• Application Number:
  US09/105,634
• Time in Patent Office: 578 Days
• Field of Search: 123/41.01, 123/41.02, 123/41.08, 123/41.09, 123/41.11, 123/41.12, 123/41.44, 123/41.49, 123/41.1, 165/DIG. 306, 165/DIG. 316
• US Class Current: 123/41.1
• CPC Class Codes: F01P 11/00 Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
• CPC Class Codes: F01P 11/10 Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
• 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 2060/08 Cabin heater
• CPC Class Codes: F01P 5/06 Guiding or ducting air to, or from, ducted fans
• CPC Class Codes: F01P 5/10 Pumping liquid coolant; Arrangements of coolant pumps
• CPC Class Codes: F01P 7/10 by throttling amount of air flowing through liquid-to-air heat exchangers
• CPC Class Codes: F28D 1/0435 Combination of units extending one behind the other F28D1/0452 takes precedence
• CPC Class Codes: Y10S 165/306 Located at heat-exchange housing outlet
• CPC Class Codes: Y10S 165/316 Axial impeller located at heat-exchange housing inlet

Abstract

A total cooling assembly adapted for installation in an engine compartment of an I.C. engine vehicle. The assembly includes a heat exchanger module to transfer heat from fluid coolant to air entering the air flow path and having front and rear faces such that air can pass in heat exchange relation across the heat exchanger module to absorb heat from fluid coolant flowing through the heat exchanger module. The heat exchanger module includes an inlet and an outlet. A cooling fan module carries the heat exchanger module and includes a fan and an electric fan motor for drawing air across the heat exchanger module from the front face to the rear face of the heat exchanger module. Pump structure is carried by the cooling fan module to circulate fluid coolant. The pump structure has at least one pump and an electric motor driving the pump. A cooling circuit is provided in which fluid coolant is circulated by the action of the pump structure. The cooling circuit permits the fluid coolant to move from the pump structure to the engine. An outlet of the engine is constructed and arranged to communicate fluid coolant with the inlet to the heat exchanger module. The outlet of the heat exchanger module is fluidly connected with an inlet to the pump structure to return the fluid coolant to the pump structure. The cooling circuit includes bypass structure constructed and arranged to fluidly connect an outlet of the engine with an inlet to the pump structure. Valve structure is provided in the cooling circuit to regulate flow therethrough. A controller controls operation of the at least one electric motor of the pump structure, the electric fan motor, and the valve structure. During a warm-up operating condition of the engine, the bypass structure permits fluid coolant to flow from the outlet of the engine to the inlet of the pump structure while substantially preventing fluid coolant to flow through the heat exchanger module.

Claims

1. A total cooling assembly adapted for installation in an engine compartment of an automotive vehicle and defining an air flow path, the vehicle having an internal combustion engine, the assembly comprising:

a heat exchanger module constructed and arranged to transfer heat from fluid coolant to air entering the air flow path and comprising front and rear faces such that air can pass in heat exchange relation across said heat exchanger module to absorb heat from fluid coolant flowing through said heat exchanger module, said heat exchanger module including an inlet and an outlet;

a cooling fan module carrying said heat exchanger module and comprising fan and an electric fan motor for drawing air across said heat exchanger module from said front face to said rear face of said heat exchanger module;

pump structure carried by said cooling fan module to circulate fluid coolant, said pump structure having at least one pump and an electric motor driving said pump;

a cooling circuit in which fluid coolant is circulated by the action of said pump structure, said cooling circuit permitting the fluid coolant to move from said pump structure to the engine, an outlet of said engine being constructed and arranged to communicate fluid coolant with the inlet to said heat exchanger module, the outlet of said heat exchanger module being fluidly connected with an inlet to said pump structure to return the fluid coolant to said pump structure, said cooling circuit including bypass structure fluidly constructed and arranged to connect an outlet of the engine with an inlet to said pump structure;

valve structure in said cooling circuit to regulate flow therethrough such that during a warm-up operating condition of the engine, said valve structure is controlled to permit fluid coolant flow from the outlet of the engine through said bypass structure and to the inlet of the pump structure, while substantially preventing fluid coolant to flow through said heat exchanger module; and

a controller to control operation of said at least one electric motor of said pump structure, said electric fan motor, and said valve structure.

2. The assembly according to claim 1, further comprising a heater core and a valve associated with said heater core, said heater core being constructed and arranged to receive the fluid coolant and to return the fluid coolant to said pump structure.

3. The assembly according to claim 1, wherein said valve structure is a two-way variable flow control valve disposed in bypass structure between an outlet of the engine and an inlet to said pump structure so as to control flow between the outlet of the engine and said inlet to said pump structure.

4. The assembly according to claim 1, wherein said valve structure is a three-way variable flow control valve operatively associated with said bypass structure to control flow between an outlet of the engine and an inlet of said pump structure and between an outlet of said heat exchanger module and an inlet to said pump structure.

5. The assembly according to claim 1, wherein said valve structure is a two-way variable flow control valve disposed between an outlet of said pump and an inlet to said heat exchanger module.

6. The assembly according to claim 3, wherein said pump structure comprises first and second pump-motors, said first pump-motor being disposed upstream of said two position valve and downstream of an inlet to the engine, and said second pump-motor being disposed upstream of an outlet of said heat exchanger module and downstream of said first pump-motor.

7. The assembly according to claim 6, wherein a motor of each of said first and second pump-motors is a two-speed brush motor.

8. The assembly according to claim 6, wherein a motor of each of said first and second pump-motors is a brushless motor.

9. The assembly according to claim 6, wherein a motor of said first pump-motor is a brush motor and a motor of said second pump-motor is a brushless motor.

10. The assembly according to claim 4, wherein said pump structure comprises a single pump-motor, a motor of said pump-motor being a brushless motor.

11. The assembly according to claim 5, wherein said pump structure comprises a single pump-motor, a motor of said pump-motor being a brushless motor.

12. The assembly according to claim 1, wherein said controller is an electronics control module carried by said cooling fan module.

13. The assembly according to claim 1, wherein said heat exchanger module comprises a radiator and a condenser.

14. The assembly according to claim 1, wherein said cooling fan module includes panel structure, said panel structure having an opening therethrough, said fan being mounted within said opening, said pump structure and said controller being mounted on said panel structure.

15. The assembly according to claim 1, wherein if one of said pump-motors fails, said controller is constructed and arranged to control operation of the other pump-motor to ensure that coolant is directed to the engine.