Low-pressure fuel supply system of diesel

A fuel supply and diesel engine technology, applied in charging systems, mechanical equipment, engine components, etc., can solve problems such as wax precipitation, and achieve the effects of convenient use, high heating efficiency and reasonable layout

Active Publication Date: 2018-09-28
NANJING AUTOMOBILE GROUP CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to: aim at the defects existing in the prior art, propose a kind of diesel engine low-pressure fuel supply system, can automatically control the oil return circuit of the engine according to the temperature of the oil outlet of the fuel filter, to solve the problem of diesel engine fuel supply system The problem of wax analysis

Method used

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  • Low-pressure fuel supply system of diesel
  • Low-pressure fuel supply system of diesel
  • Low-pressure fuel supply system of diesel

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Embodiment Construction

[0021] A low-pressure fuel supply system for diesel engines provided by the present invention has a structure such as Figure 1 to Figure 4 As shown, the part between the oil inlet of the 2 fuel tank and the 14 engine is the diesel engine oil inlet system, including the 1 fuel tank, which is fixed on the vehicle frame through the 12 fuel tank mounting bracket, and is used to store diesel oil; in the diesel engine oil inlet system, 3 fuel filters with hand oil pumps are set up, the 3 fuel filters with hand oil pumps are connected with 2 and 4 oil delivery hoses, and the joints are fastened with 13 steel band clamps; in the oil inlet system, 3 The fuel filter with hand oil pump is equipped with 10 disc fuel heaters and 11 fuel temperature sensors at the oil outlet of the filter, and has two oil inlet ports, which are respectively connected to 2 fuel tank oil outlet ports and 7 return ports. Oil three-way solenoid valve, 10 The power of the disc heater is usually set to 200~300W,...

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Abstract

The invention relates to a low-pressure fuel supply system of a diesel. A fuel tank, a fuel filter, an electromagnetic fuel return three-way valve and a fuel conveying hose form a sealing loop which is divided into a fuel inlet system and a fuel outlet system, the fuel inlet system is a pipeline between a fuel outlet of the fuel tank and a fuel inlet of an engine, and a fuel return system is a pipeline between a fuel return port of the engine and a fuel inlet of the fuel tank. According to the low-pressure fuel supply system, the temperature of the fuel outlet is monitored by a temperature sensor at a fuel outlet of the fuel filter, and a fuel return way of the engine is automatically controlled, so that the problem of wax precipitation of a fuel supply system of the diesel is solved.

Description

technical field [0001] The invention relates to a low-pressure fuel supply system for a diesel engine, in particular to a low-pressure fuel supply device for a diesel engine that uses the heat of oil return to melt wax, and belongs to the technical field of commercial vehicle diesel engines. Background technique [0002] The design of the low-pressure fuel supply system for commercial vehicle diesel engines generally requires that the return oil from the high-pressure oil pump be directly returned to the fuel tank, and the oil return port should be located far away from the oil inlet, so that the return oil can be fully cooled to ensure that the high-pressure oil pump is fully lubricated and the fuel injection metering is accurate and accurate. Avoid inhaling gas into the oil inlet. The existing system is designed on the premise that the fuel meets the standard requirements, and the user immediately replaces the corresponding grade of fuel when the temperature changes, regar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M37/22F02M37/16
CPCF02M37/0017F02M37/0052F02M37/16F02M37/22
Inventor 陈祖荣赵雄伟李静张弢
Owner NANJING AUTOMOBILE GROUP CORP
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