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Coordinate electric-controlled fuel-oil jetting system

A fuel injection system, coordinated technology, applied in fuel injection pumps, fuel injection devices, charging systems, etc., can solve the problem that diesel engines cannot meet the needs of national development

Inactive Publication Date: 2007-03-28
CHONGQING FUEL INJECTION SYST CO LTD OF CHINA NAT HEAVY DUTY TRUCK GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the country's increasing emphasis on environmental protection, diesel engines with Euro II emissions will not be able to meet the needs of national development

Method used

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  • Coordinate electric-controlled fuel-oil jetting system
  • Coordinate electric-controlled fuel-oil jetting system
  • Coordinate electric-controlled fuel-oil jetting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Referring to Fig. 1 and Fig. 2, an electronically controlled fuel injection system includes a fuel nozzle assembly 1, a fuel injector body 2, a gasket 4, and a fuel injector pressure regulating spring 5, and is characterized in that the fuel injector The top of the body 2 is provided with a groove, the groove is provided with a solenoid valve 8, and the control valve seat 8-3 of the solenoid valve 8 is installed at the bottom of the groove through the adjustment pad 8-2; the control valve seat 8-3 and Adjusting pads 8-2 are respectively provided with oil inlets communicating with each other and communicated with the high-pressure oil passage on the injector body 2 to form a high-pressure fuel chamber A chamber, and are also provided with oil return ports communicating with each other to form an oil return passage 8- 1. The top side of the injector body 2 is provided with an oil return cavity C cavity; the inner bottom of the control valve seat 8-3 is a coni...

Embodiment 2

[0024] Embodiment 2: Referring to Fig. 3 and Fig. 4, on the basis of Embodiment 1, a back pressure valve 9 is installed on the upper end of the fuel injector pressure regulating spring 5 in the fuel injector body 2, and the valve in the back pressure valve 9 The steel ball 9-4, the back pressure valve spring seat 9-3 and the back pressure valve spring 9-2 are arranged in sequence from bottom to top in the seat 9-1; an oil inlet passage 3 is arranged on the injector body 2 to connect the high-pressure fuel chamber Chamber A communicates with chamber D, the back pressure chamber where the pressure regulating spring 5 of the fuel injector is located.

[0025] In this embodiment, the principle of controlling the switch between the control valve core 8-4 and the control valve seat 8-3 through the electromagnet 8-7 is energized to generate an electromagnetic force to ensure that the electromagnet 8-7 generates an upward electromagnetic force. The force overcomes the restoring force ...

Embodiment 3

[0029] Embodiment 3: Referring to Fig. 5 and Fig. 6, on the basis of Embodiment 1, the gasket 4 is arranged on the upper end of the pressure regulating spring 5 of the fuel injector, and the solenoid valve 6 of the injection port is arranged on the upper end of the gasket 4, and the gasket 4 The sheet 4 is connected with the control valve seat 6-2 of the solenoid valve 6 of the fuel injection port, and the gasket 4 and the control valve seat 6-2 are respectively provided with an oil inlet passage 3 communicating with each other and connected with the high-pressure fuel chamber A chamber respectively. It is connected with the fuel chamber E, and the control valve seat 6-2 is provided with the oil return port B connected with the oil return passage 8-1; the upper end of the control valve seat 6-2 is the control valve spool 6-3, and its The mutual contact surface is a conical surface; when the control valve spool 6-3 and the control valve seat 6-2 are opened, the fuel chamber E ch...

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PUM

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Abstract

This invention discloses a coordinated electric controlled fuel spray system including a nozzle tip coupled piece, a sprayer, pads and a pressure-regulation spring of a sprayer characterizing that the top of the sprayer is set with a groove and an electromagnetic valve is set on the groove, the base of a control valve is installed on the bottom of the groove by a regulation pad, oil-ins mutually connected are set on the valve base and the regulation pad connected with the high pressure oil channel on the sprayer device to form a high pressure fuel cavity and spill ports mutually connected are set on them to form a spill channel, a spill cavity is set at the top side of the sprayer, the inside bottom of the control valve base is a cone, the bottom of the valve core is matched with said cone, when the valve core and the base are started up, the high pressure fuel cavity is connected with the spill cavity of the sprayer via the spill channel, which can control the sprayer timely to spray fuel .

Description

technical field [0001] The invention relates to a fuel injection pump system, in particular to a coordinated electronically controlled fuel injection system. Background technique [0002] With the country's increasing emphasis on environmental protection, diesel engines with Euro II emissions will not be able to meet the needs of national development. Diesel engines with Euro III emissions have become the research direction of domestic engine factories, and the fuel injection pump system is one of the most important components that affect engine emissions. Therefore, it is necessary to develop a fuel injector that can meet Euro III emissions. adapt to it. Contents of the invention [0003] The invention provides a coordinated electronically controlled fuel injection system that can meet Euro III emission. Its technical solution is: an electronically controlled fuel injection system, including a fuel nozzle assembly, a fuel injector body, a gasket, and a fuel injector pre...

Claims

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Application Information

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IPC IPC(8): F02M59/10
Inventor 邱龙彬秦国权
Owner CHONGQING FUEL INJECTION SYST CO LTD OF CHINA NAT HEAVY DUTY TRUCK GRP