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High pressure oil rail assembly for gasoline engine

A high-pressure oil, gasoline engine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as the need for larger space for spatial layout

Inactive Publication Date: 2006-11-15
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the advancement of technology, the fuel injection pressure of high-injection-pressure gasoline engines such as direct-injection gasoline engines can reach more than 100 atmospheres. A pressure relief mechanism that limits oil pressure is added to the fuel rail assembly of high-injection pressure gasoline engines. However, the gasoline engine oil of this structure The oil return pipe of the rail assembly The fuel pipe has a main fuel pipe and an oil return pipe connected to each injector cabin, and the space layout requires a large space

Method used

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  • High pressure oil rail assembly for gasoline engine
  • High pressure oil rail assembly for gasoline engine
  • High pressure oil rail assembly for gasoline engine

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Embodiment Construction

[0022] Such as figure 1 As shown, the gasoline engine high-pressure fuel rail assembly includes a fuel rail body 1, an oil inlet mechanism, an oil return mechanism, an injector mechanism, and a pressure relief mechanism. The oil inlet mechanism includes an oil inlet pipe 12 and an oil inlet bushing 4; the oil return mechanism includes an oil return pipe 13 and an oil return bushing 6; the injector mechanism includes four injectors 10 and four injector hangers 3; The pressure mechanism is composed of a sensor bushing 2, a sensor, a pressure relief valve, and a pressure relief bushing 5. The sensor is installed in the sensor bushing 2, and the pressure relief valve is installed in the pressure relief valve bushing 5.

[0023] The oil rail body 1 is a slender welded copper pipe, and the two ends of the oil rail body 1 are sealed by welding by the oil rail covers 7, 14, and four connecting brackets 8, 9 are welded at intervals on it. The upper part has bolt holes in which bolts 1...

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Abstract

A high-pressure fuel track assembly for petrol engines consists of a hollow fuel track body with two closed ends, a fuel intake mechanism, a fuel return mechanism and a fuel injector mechanism. A relief pressure mechanism disposed in the high-pressure fuel track assembly includes a sensor, a sensor bush, a relief pressure valve and a relief pressure valve bush. The fuel intake bush of the fuel intake mechanism, the fuel return bush of the fuel return mechanism, the fuel injector car of the fuel injector mechanism, the sensor bush of the relief pressure mechanism and the relief pressure valve bush are distributed at intervals in the fuel track body. The supports are also set at intervals in the fuel track body.

Description

technical field [0001] The invention mainly relates to a gasoline engine, especially a gasoline engine high-pressure oil rail assembly. Background technique [0002] At present, the gasoline engine oil rail assembly is composed of the oil rail body, the oil inlet mechanism, the oil return mechanism, and the fuel injector mechanism. Taking a four-cylinder engine as an example, the oil inlet mechanism includes an oil inlet pipe and an oil inlet bush connected with the oil inlet pipe. , the oil return mechanism includes four oil return pipes and an oil return bush connected to each oil return pipe, the fuel injector mechanism includes four fuel injectors and an injector hanger connected to each injector, and the fuel rail body It is a stainless steel pipe with both ends closed, an oil inlet bush and four injector pods are welded on the fuel rail body at intervals, each injector pod is welded with an oil return bush, four The root oil return pipe communicates with the four fuel...

Claims

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Application Information

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IPC IPC(8): F02M47/02
Inventor 张志福
Owner CHERY AUTOMOBILE CO LTD