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Oil pump system of an engine for a vehicle

a technology of oil pump and engine, which is applied in the direction of machines/engines, mechanical equipment, auxiliaries, etc., can solve the problems of affecting engine operation, affecting engine operation, and excessive hydraulic pressure of hydraulic pumps, so as to reduce engine power loss and enhance fuel consumption

Inactive Publication Date: 2012-05-17
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Various aspects of the present invention provide for an oil pump system of an engine for a vehicle having advantages of active controlling of output oil pressure so as to reduce engine power loss and enhance fuel consumption.
[0017]By such an arrangement of an oil pump system, precise hydraulic pressure is supplied for engine lubrication and damage of engine components due to an unstable lubricant pressure is reduced. In addition, power loss may be reduced and accordingly an enhancement of fuel consumption may be achieved.

Problems solved by technology

This means that the output hydraulic pressure of the hydraulic pump may become excessive above an intermediate engine speed at which the maximum required pressure level is achieved.
The excessive output pressure and volume may negatively affect an engine operation and may damage engine components.

Method used

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  • Oil pump system of an engine for a vehicle
  • Oil pump system of an engine for a vehicle
  • Oil pump system of an engine for a vehicle

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Embodiment Construction

[0022]Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is / are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0023]FIG. 1 is a schematic diagram illustrating a low speed and high temperature state of an oil pump system of an engine for a vehicle according to various embodiments of the present invention. As shown in FIG. 1, the oil pump system of an engine for a vehicle according to various embodiments of the present invention includes moil s...

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Abstract

Reduction of engine power loss and enhancement of fuel consumption may be achieved by an oil pump system of an engine for a vehicle including an oil sump reserving engine oil used for lubrication of the engine, a hydraulic pump pumping the engine oil, a main relief valve that is disposed on an output line of the hydraulic pump and controls an output pressure of the output line depending on the output pressure and a control pressure, and an auxiliary relief valve that redirects the output pressure to the main relief valve as a control pressure depending on operating condition of the engine.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority of Korean Patent Application Number 10-2010-0114507 filed Nov. 17, 2010, the entire contents of which application is incorporated herein for all purposes by this reference.BACKGROUND OF INVENTION[0002]1. Field of Invention[0003]The present invention relates to oil pump system of an engine for a vehicle engine.[0004]2. Description of Related Art[0005]While various types of hydraulic pumps are used in an engine lubrication system in order to pump incompressible fluid such as engine oil, output pressure and volume of such hydraulic pumps varies depending on the operating speed of an engine since the engine speed varies in a wide speed range.[0006]Output hydraulic pressure of the hydraulic pump of an engine should be controlled to remain in a range of minimum required level to maximum required level, and the maximum required level is achieved at an engine speed much lower than the engine speed limit.[000...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01M1/02
CPCF01M1/02F01M2250/60F01M1/16F01M1/20
Inventor CHUNG, YOUNG ROCK
Owner HYUNDAI MOTOR CO LTD
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