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Oil pump for automatic transmission

A technology of automatic transmission and oil pump, which is applied to the combination of rotary piston type/swing piston type pump, rotary piston type/swing piston type pump components, pumps, etc., which can solve the problem of high weight of automatic transmission and complicated operation of hydraulic supply system, etc. question

Inactive Publication Date: 2016-01-06
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, because the two oil pumps are operated separately, the operation of the hydraulic supply system is complicated, and the weight of the automatic transmission is high

Method used

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  • Oil pump for automatic transmission
  • Oil pump for automatic transmission
  • Oil pump for automatic transmission

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Experimental program
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Embodiment approach

[0034] Descriptions of components not necessary to explain the exemplary embodiment will be omitted.

[0035] figure 2 is a sectional view of an oil pump of an automatic transmission according to an exemplary embodiment of the present inventive concept, image 3 is a perspective view of components used in an oil pump for an automatic transmission according to an exemplary embodiment of the present inventive concept.

[0036] refer to figure 2 , the oil pump 50 for an automatic transmission according to an exemplary embodiment of the present inventive concept includes a low pressure oil pump 51 and a high pressure oil pump 53 assembled in one housing 55 . Low hydraulic pressure generated by the low-pressure oil pump 51 is supplied to low-pressure parts such as a torque converter (T / C), cooling part, and lubricating part, and high hydraulic pressure generated by the high-pressure oil pump 53 is supplied to high-pressure parts for shift-related Operate the friction member. ...

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Abstract

An oil pump for an automatic transmission includes a housing provided with at least one hydraulic line formed therein. A power source is coupled to the housing and supplies a torque through a drive shaft. Two pumps are disposed respectively at both end portions of the housing and disposed concentrically with the drive shaft in the housing. The two pumps are operably connected to each other through a torque delivery shaft, and pump an oil by receiving the torque from the drive shaft. The drive shaft is inserted into and is operably connected to a first inner rotor of one pump, and is operably connected to the torque delivery shaft connected to a second inner rotor of the other pump through an engaging portion.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2014-0073079 filed with the Korean Intellectual Property Office on Jun. 16, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to oil pumps for automatic transmissions. More particularly, the present disclosure relates to an oil pump for an automatic transmission in which two pumps driven by one electric motor are assembled in one housing. Background technique [0004] Vehicle manufacturers have been focusing on improving fuel economy due to rising oil prices and exhaust regulations. [0005] Improvement in fuel economy can be achieved by minimizing unnecessary power consumption of the oil pump. [0006] A recent automatic transmission is provided with two oil pumps, a low-pressure oil pump and a high-pressure oil pump. Thus, the hydraulic pressure genera...

Claims

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Application Information

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IPC IPC(8): F16H57/04F16H61/30
CPCF04C2/102F04C2/344F04C11/001F04C14/02F04C15/0061F04C15/0076F04C2240/60F16H57/0436F16H57/0441
Inventor 赵源珉李宗洙
Owner HYUNDAI MOTOR CO LTD