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Control system and control method of gasoline direct injection engine

一种汽油直喷、控制方法的技术，应用在发动机控制、发动机元件、燃烧发动机等方向，能够解决振动与不平顺性恶化等问题，达到振动与声振粗糙度改进的效果

Inactive Publication Date: 2014-05-14
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Therefore, vibration and noise are generated by the pressure pulse of the fuel flowing back into the low-pressure pump, so that NVH (Noise, Vibration and Harshness) deteriorates

Method used

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  • Control system and control method of gasoline direct injection engine
  • Control system and control method of gasoline direct injection engine

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Embodiment Construction

[0036] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the drawings and described below. While the invention has been described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other alternatives, modifications, equivalents and other alternatives, which may be included within the spirit and scope of the invention as defined by the appended claims. In the implementation plan.

[0037] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] figure 1 is a block diagram showing a control system of a GDI engine according to an exemplary embodiment of the present invention.

[0...

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Abstract

A control system and a control method of a gasoline direct injection engine may include determining whether the engine is stopped and can improve NVH of a vehicle by keeping the fuel high-pressure pump input valve of the high-pressure pump operating for a predetermined time and preventing fuel from flowing backward to the low-pressure pump.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0122128 filed on Oct. 31, 2012, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The invention relates to a control system and a control method of a GDI (gasoline direct injection engine) engine. Background technique [0004] Typically, the fuel system of a GDI engine is equipped with a low-pressure pump operated by an electric motor to deliver fuel to the fuel rail in the fuel tank, and a high-pressure pump located on the cylinder head and operated by a camshaft. [0005] In addition, injectors that inject fuel into the combustion chambers are separately installed, and pressure sensors that detect internal pressure of the fuel rail are installed on the fuel rail. [0006] Fuel is delivered from the fuel tank to the engine by a low pressure pump, pressurized to a preset pressure, appr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00
CPCF02D41/042F02D41/3082F02D41/3854F02D2200/0602F02M59/367F02B23/10F02D41/04F02M59/10F02M59/44
Inventor 李兴淅吴浣守
Owner HYUNDAI MOTOR CO LTD
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