HEAT EXCHANGING SYSTEM FOR VEHICLE AND CONTROL METHOD THEREOF

• US 20120279699A1
• Filed: 11/22/2011
• Published: 11/08/2012
• Est. Priority Date: 05/04/2011
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kim, Dae Kwang
• Application Number:
  US13/302,942
• Publication Number:
  US 20120279699A1
• Time in Patent Office: Days
• US Class Current: 165/287
• CPC Class Codes: F01P 11/08 Arrangements of lubricant coolers in lubrication apparatus F01M
• CPC Class Codes: F01P 2060/045 for transmissions
• CPC Class Codes: F01P 2060/08 Cabin heater
• CPC Class Codes: F16H 57/0413 Controlled cooling or heating of lubricant; Temperature control therefor
• CPC Class Codes: F16H 57/0417 Heat exchangers adapted or integrated in the gearing
• CPC Class Codes: F16H 57/0441 Arrangements of pumps
• CPC Class Codes: F16H 57/0475 Engine and gearing, i.e. joint lubrication or cooling or heating thereof electric machines and gearing F16H57/0476
• CPC Class Codes: F28D 2021/008 for vehicles for aircrafts F28D2021/0021
• CPC Class Codes: F28F 2250/08 Fluid driving means, e.g. pumps, fans
• CPC Class Codes: F28F 27/00 Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus control arrangements in general G05

Abstract

A heat exchange system for a vehicle may include a heat exchanger to transfer heat among a coolant, an automatic transmission oil, and/or a gear oil, an engine fluidly connected to the heat exchanger and adapted to deliver/receive the coolant, an automatic transmission fluidly connected to the heat exchanger and adapted to deliver/receive the automatic transmission oil, a differential apparatus fluidly connected to the heat exchanger and adapted to deliver/receive the gear oil, a pump adapted to pump the gear oil, and a control unit adapted to control the pump. A control method is also provided.

Claims

1. A heat exchange system for a vehicle, comprising:

a heat exchanger adapted to transfer heat among a coolant, an automatic transmission oil, and/or a gear oil;

an engine fluidly connected to the heat exchanger and adapted to deliver the coolant to the heat exchanger or to receive the coolant from the heat exchanger;

an automatic transmission fluidly connected to the heat exchanger and adapted to deliver the automatic transmission oil to the heat exchanger or to receive the automatic transmission oil from the heat exchanger;

a differential apparatus fluidly connected to the heat exchanger and adapted to deliver the gear oil to the heat exchanger or to receive the gear oil from the heat exchanger;

a pump adapted to pump the gear oil; and

a control unit adapted to control the pump.

2. The heat exchange system of claim 1, wherein a coolant pathway through which the coolant flows, a transmission oil pathway through which the automatic transmission oil flows, and a gear oil pathway through which the gear oil flows are formed in the heat exchanger, and the coolant pathway, the transmission oil pathway, and the gear oil pathway are not fluidly communicated with each other.

3. The heat exchange system of claim 2, wherein the coolant, the automatic transmission oil, and/or the gear oil transfer heat with each other during passing respectively through the coolant pathway, the transmission oil pathway, and/or the gear oil pathway.

4. The heat exchange system of claim 1, wherein the pump is provided at the differential apparatus.

5. The heat exchange system of claim 1, wherein the control unit is adapted to receive information on the coolant, the automatic transmission oil, and/or the gear oil, and to control a rotation speed of the pump or to turn on or off the pump selectively based on the information.

6. The heat exchange system of claim 1, further comprising:

a heater adapted to receive the coolant from the engine, warm up the coolant and return the coolant back to the engine; and

a radiator adapted to receive the coolant from the engine, cool the coolant and return the coolant back to the engine.

7. A control method of a heat exchange system which circulates a coolant through an engine, a gear oil through a differential apparatus with a pump, and an automatic transmission oil through an automatic transmission, the method comprising:

determining whether information on temperatures of the coolant, the automatic transmission oil, and the gear oil is received during an operation of the engine;

calculating a rotation speed of the pump according to the information if the information is received; and

operating the pump according to the calculated rotation speed.

8. The control method of claim 7, wherein the pump is operated at a safe mode if the information is not received.

9. The control method of claim 7, wherein the pump is operated only when the engine operates.

10. The control method of claim 7, further comprising diagnosing the pump if a vehicle is in a key-on state before the engine operates.

11. A control method of a heat exchange system which circulates a coolant through an engine, a gear oil through a differential apparatus with a pump, and an automatic transmission oil through an automatic transmission, the method comprising:

determining whether information on temperatures of the coolant, the automatic transmission oil, and the gear oil is received during an operation of the engine; and

turning on or off the pump selectively based on the information if the information is received.

12. The control method of claim 11, wherein the pump is turned off to prevent heat loss of the coolant when a coolant temperature is lower than a first predetermined temperature.

13. The control method of claim 12, wherein the pump is turned on to increase a heat-exchange efficiency between the oil and the coolant when the coolant temperature is higher than or equal to the first predetermined temperature and an oil temperature is lower than a second predetermined temperature.

14. The control method of claim 13, wherein the pump is turned off to minimize wasting energy of the heat exchange system when the oil temperature is higher than or equal to the second predetermined temperature and is lower than a third predetermined temperature.

15. The control method of claim 14, wherein the pump is turned on to prevent overheating of the automatic transmission and the differential apparatus when the oil temperature is higher than or equal to a third predetermined temperature.

16. The control method of claim 11, wherein the pump is operated at a safe mode if the information is not received.

17. The control method of claim 11, wherein the pump is operated only when the engine operates.

18. The control method of claim 11, further comprising diagnosing the pump if a vehicle is in a key-on state before the engine operates.

19. The control method of 10, further comprising operating a warning device to alert a drive if the pump is not operated normally.

20. The control method of 19, wherein the warning device is a warning lamp.