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Double-oil-duct oil atomizer with controllable fuel oil temperature

A fuel injector and oil passage technology, which is applied in the field of engine fuel injectors, can solve the problems of increasing the difficulty of structural arrangement, increasing costs, etc., to optimize fuel atomization effect, improve combustion and emission quality, and realize quantitative mixing and injection. burning effect

Inactive Publication Date: 2014-02-19
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other is that two fuels require two independent fuel supply systems and two injectors at the same time, which greatly increases the cost and increases the difficulty of structural arrangement

Method used

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  • Double-oil-duct oil atomizer with controllable fuel oil temperature
  • Double-oil-duct oil atomizer with controllable fuel oil temperature
  • Double-oil-duct oil atomizer with controllable fuel oil temperature

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Embodiment Construction

[0014] like figure 1 and 2 As shown, a dual-channel injector with controllable fuel temperature includes injector body 1, main needle valve 2, needle valve body 3, fuel mixing chamber 4, compression nut 5, injector solenoid valve 6. Drain needle valve 7, throttle hole 8, oil return hole 9, main needle valve spring 10, auxiliary needle valve spring 11, plunger 12, plunger chamber 13, overflow hole 14, electrical interface 15, main oil Road 16, controlled oil passage 17, main oil passage oil inlet hole 18, controlled oil passage oil inlet hole 19, fuel heating plug 20; wherein the main oil passage oil inlet hole 18 is connected with the main oil passage 16, and the fuel heating plug 20 is connected with the controlled oil passage The oil inlet hole 19 of the controlled oil passage is connected with the lock nut 24 through the interference fit of the positioning boss 25, and the oil inlet hole 19 of the controlled oil passage is connected with the controlled oil passage 17, at t...

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Abstract

The invention relates to a double-oil-duct oil atomizer with a controllable fuel oil temperature. A main oil duct and a controlled oil duct are formed inside an oil atomizer body. Meanwhile, a fuel oil heating plug is arranged in front of an oil inlet of the controlled oil duct and used for heating fuel oil injected into the controlled oil duct, the main oil duct can continuously provide low-temperature fuel oil, the controlled oil duct provides set high-temperature fuel oil, and the high-temperature fuel oil and the low-temperature fuel oil are proportionally mixed in a fuel mixing cavity, so that the fuel oil is ejected according to different temperatures. Meanwhile, after the fuel oil heating plug is removed from the oil atomizer, the main fuel is distributed in the main oil duct, the auxiliary fuel is distributed in the controlled oil duct, so that mixing of the double fuel is achieved, and the double-oil-duct oil atomizer can be well adapted to the combustion mode of double fuel ejecting at the current stage. The fuel oil atomizing effect of a direction injection engine in a cylinder is optimized, combustion and emission quality of the engine is greatly promoted, and meanwhile quantitative mixing and ejecting combustion of the double fuel are achieved. The double-oil-duct oil atomizer is scientific and reasonable in design and has high social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of engine fuel injectors, in particular to a dual oil channel fuel injector with controllable fuel temperature. Background technique [0002] At present, for in-cylinder direct injection engines, the atomization process of fuel directly affects the formation of the mixture in the cylinder as well as the combustion and emission quality of the engine. The atomization of fuel oil is affected by the combined effects of inertial force, aerodynamic force, liquid viscous force and surface tension of jet movement. When the fuel pressure is lower than the saturated vapor pressure corresponding to its temperature, the fuel is in an unstable superheated state during the injection process, and continuously growing bubbles will be generated on the surface or even inside of the fuel, which will significantly affect the atomization and evaporation process of the spray. Call it a flash boil spray. Experiments have proved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M53/04F02M61/10F02M51/06F02M61/16
Inventor 王艳华陈海龙刘汉涛王宇鹏
Owner ZHONGBEI UNIV
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