ELECTRIC OIL PUMP SYSTEM INTEGRATED WITH HEAT EXCHANGER

• US 20190323391A1
• Filed: 11/09/2018
• Published: 10/24/2019
• Est. Priority Date: 04/18/2018
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: AHN, Sung Hyun, CHOI, Byoung Hoon, KANG, Seung Jae, LEE, Hak Sung, KIM, Yeon Ho, KIM, Jong Hyun, KIM, Tae Ho
• Granted Patent: US 11,280,230 B2
• Time in Patent Office: Days
• CPC Class Codes: F01M 1/02 using lubricating pumps pumps in general F04; lubricating pumps per se F16N
• CPC Class Codes: F01M 2001/0215 Electrical pumps
• CPC Class Codes: F01M 5/002 Cooling
• CPC Class Codes: F01P 3/12 Arrangements for cooling other engine or machine parts

Abstract

An electric oil pump system integrated with a heat exchanger capable of reducing installation space and cost may include: an the electric oil pump including a motor and a pumping part operated by power of the motor to suck and send oil under pressurizing to an oil-used part; and a heat exchanger to exchange heat between the pressurized oil sent by the electric oil pump and coolant cooled at a radiator while the coolant and the pressurized oil pass through the heat exchanger. In particular, the heat exchanger is directly coupled to the electric oil pump and the oil-used part, respectively, and integrated with each other.

Claims

1. An electric oil pump system integrated with a heat exchanger, the electric oil pump system comprising:

an electric oil pump including a motor and a pumping part operated by power of the motor and configured to suck and send oil under pressurizing to an oil-used part; and

a heat exchanger configured to exchange heat between the pressurized oil sent by the electric oil pump and coolant cooled at a radiator while the coolant and the pressurized oil pass through the heat exchanger,

wherein the heat exchanger is directly coupled to the electric oil pump and the oil-used part, respectively, and integrated with each other.

2. The electric oil pump system of claim 1, wherein:

the pumping part includes a discharging port configured to discharge the pressurized oil from the electric oil pump and configured to directly couple to an oil inlet port of an oil flow path in the heat exchanger; and

an oil outlet port of the oil flow path in the heat exchanger is directly coupled to an oil inlet port of the oil-used part.

3. The electric oil pump system of claim 1, further comprising:

a direct pipe line configured to penetrate the heat exchanger, and

wherein the pumping part includes an oil inlet port configured to suck the oil into the electric oil pump and connected to an oil outlet port of the oil-used part by the direct pipe line, so that the oil flows from the oil-used part to the electric oil pump through the direct pipe line.

4. The electric oil pump system of claim 1, wherein:

a coolant line configured to circulate coolant is connected between the radiator, a water pump and the heat exchanger; and

the water pump configured to suck and send the coolant under pressurizing and to circulate the coolant along the coolant line.

5. The electric oil pump system of claim 1, wherein:

the motor of the electric oil pump is provided with a first oil flow path through which the oil passes; and

a part of the pressurized oil sent from the pumping part is configured to cool the motor while passing through a second oil flow path formed on a side of the motor.

6. The electric oil pump system of claim 1, wherein the pumping part of the electric oil pump comprises:

an inlet port configured to suck the oil;

a discharging port configured to discharge the pressurized oil; and

a first oil flow path configured to connect the inlet port and the discharging port and to guide the oil to the discharging port.

7. The electric oil pump system of claim 6, wherein a second oil flow path formed in the motor is branched out from the first oil flow path and configured to circulate a part of the pressurized oil inside of the motor while remaining oil of the pressurized oil flows in the heat exchanger through the first oil flow path.