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Variable oil-supply speed electric-control unit pump

A single pump, variable technology, used in electrical control, engine control, fuel injection control, etc., can solve the problem that diesel engines cannot meet the needs of national development.

Inactive Publication Date: 2010-05-26
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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  • Variable oil-supply speed electric-control unit pump
  • Variable oil-supply speed electric-control unit pump
  • Variable oil-supply speed electric-control unit pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] See attached figure 1 , an electronically controlled unit pump with a variable fuel supply rate, which includes: a smoke limiter 2, a mechanical full range governor 4 and an oil delivery pump assembly 6;

[0021] It also includes: ECU 1, variable pre-travel in-line fuel injection pump assembly 5, throttle opening sensor 3, pre-travel position sensor 8, engine speed sensor 10, worm gear pre-travel control assembly 7 and stepper motor 9;

[0022] Among them, the throttle opening sensor 3 is fixed on the mechanical full speed governor 4 for collecting the engine throttle opening signal, and the pre-stroke position sensor 8 is installed on the worm shaft 7-1 in the worm gear and worm pre-stroke control assembly 7 for collecting Voltage signal, the engine speed sensor 10 is placed on the engine and is used to collect the engine speed signal; the output ends of the throttle opening sensor 3, the pre-stroke position sensor 8 and the engine speed sensor 10 are all connected to ...

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PUM

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Abstract

The invention discloses an electric control unit pump with variable oil supply speed, comprising a smoking limiter, a mechanical omnidistance speed governor, an oil pump assembly, an ECU, a variable pre-stroke in-line injection pump assembly, a throttle opening sensor, a pre-stroke position sensor, an engine rotation speed sensor, a worm wheel and worm pre-stroke assembly and a stepping motor; thestepping motor drives the worm wheel and worm pre-stroke control assembly which controls the actions of the variable pre-stroke in-line injection pump assembly; the ECU processes the signals collected by the three sensors and correspondingly controls the actions of the stepping motor; the invention has the beneficial effects of leading the engine to work at the best oil supply rate and oil injection advance angle, reaching the exhaust requirement of Euro III, and meeting the power requirements of all working conditions.

Description

technical field [0001] The invention relates to a unit pump, in particular to an electronically controlled unit pump with variable oil supply rate. 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 that meet Euro III emissions have become the research direction of domestic engine factories, and fuel injection pumps are one of the most important components that affect engine emissions: under different operating conditions, changes in the fuel supply rate of the fuel injection pump will directly affect the engine. Since the change of the pre-stroke can directly change the fuel supply rate of the fuel injection pump, the present invention is an electronically controlled unit pump with variable fuel supply rate developed based on the above concept. Contents of the invention [0003] The present invention provides a va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/04F02D41/30
Inventor 卓兴军周斌王亚会
Owner CHONGQING FUEL INJECTION SYST CO LTD OF CHINA NAT HEAVY DUTY TRUCK GRP