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Diesel engine secondary atomization combustion system

A technology of secondary atomization and combustion system, applied in charging system, fuel re-atomization/homogenization, combustion air/combustion-air treatment, etc. Over-concentrated circumferential distribution and other problems, to achieve the effect of good atomization performance, uniform circumferential distribution, rapid combustion and perfection

Inactive Publication Date: 2006-05-31
DALIAN UNIV OF TECH
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  • Summary
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Problems solved by technology

[0003] In order to solve the problems of too thick mixed gas and uneven circumferential distribution at the landing point of the porous spray, and the short penetrating distance of the umbrella-shaped spray, the invention provides a secondary atomization combustion system for a diesel engine. The secondary atomization combustion system for a diesel engine It can provide spray with good atomization performance, uniform circumferential distribution and controllable penetration distance

Method used

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  • Diesel engine secondary atomization combustion system
  • Diesel engine secondary atomization combustion system
  • Diesel engine secondary atomization combustion system

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Embodiment Construction

[0011] exist figure 1 In the shown embodiment, the cylinder head (1), the piston (2) and the cylinder liner (3) form an ω-shaped combustion chamber (2a), and the middle part of the cylinder head (1) is equipped with an oil injector (4), and the fuel injection The outside of the mouth (4) is a sleeve (5), and the lower end of the sleeve (5) is provided with a guide cone (5a) extending into the combustion chamber (2a). When the injector (4) sprays the primary oil jet (4a) toward the guide cone (5a), the primary oil jet (4a) expands into a more uniform circumferentially distributed secondary oil jet under the guidance of the guide cone (6), the secondary oil beam (6) forms a more homogeneous combustible mixture under the action of the airflow movement in the combustion chamber (2a).

[0012] exist figure 2 Showed that the guide cone (5a) is a structure that is connected with the conduit (5) by two connecting ribs (5b).

[0013] exist image 3 In another embodiment shown, the...

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Abstract

A secondary atomization combustion system for a diesel engine belongs to the field of engine mixture gas formation and combustion. It is equipped with a guide cone directly below the fuel injector. When the oil beam ejected from the multi-hole injector hits the guide cone, under the guidance of the cone surface, it forms a uniform circumferential distribution, good atomization, The spray with controllable penetration distance is very beneficial to the formation of combustible mixture, which accelerates the combustion speed and significantly improves the power, economy and emission indicators of the engine.

Description

Technical field [0001] The invention relates to a secondary atomization combustion system of a diesel engine, which belongs to the field of engine mixture gas formation and combustion. Background technique [0002] At present, the excess air coefficient of the diesel engine is relatively large, but it is easy to emit black smoke. The main reason is that the porous spray is not uniform in the circumferential direction, and an over-concentrated area is generated at the spray point. In order to solve this problem, although the umbrella-shaped spray produced has good atomization performance and uniform distribution in the circumferential direction, the penetrating force is not strong. Therefore, the performance is better under medium and low working conditions, and the black smoke increases more under high working conditions because the surrounding air of the combustion chamber cannot be used. Contents of the invention [0003] In order to solve the problems of too thick mixt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M29/04
Inventor 隆武强
Owner DALIAN UNIV OF TECH
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