A Direct Injection Diesel Engine Collision Spray Diffusion Combustion System

A diffusion combustion, diesel engine technology, applied in combustion engines, mechanical equipment, machines/engines, etc., can solve the problems of excessively dense circular distribution and unevenness of the mixture, and achieve good atomization performance, uniform spatial distribution, and improved quality. Effect

Inactive Publication Date: 2018-06-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the spray of the direct-injection diesel engine hits the wall and the landing point of the porous spray is too thick and the circumferential distribution is uneven, the invention provides a direct-injection diesel engine collision spray diffusion combustion system

Method used

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  • A Direct Injection Diesel Engine Collision Spray Diffusion Combustion System
  • A Direct Injection Diesel Engine Collision Spray Diffusion Combustion System
  • A Direct Injection Diesel Engine Collision Spray Diffusion Combustion System

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, wi...

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Abstract

The invention discloses a direct injection diesel engine collision spray diffusion combustion system. A combustion chamber of the combustion system is located in the middle of the head of a piston and needs to be used in cooperation with an oil injector with a multi-hole oil nozzle. According to the structure, a boss is arranged at the bottom of the center of the combustion chamber, collision guide blocks are evenly distributed on a throat of the combustion chamber in the circumferential direction, and each guide block is provided with a collision guide bevel. In the operating process, the oil injector directly sprays oil streams onto the collision guide blocks so that the primary oil streams can be spread along the collision guide bevels without accumulating on drop points, the spray diffusion speed is high, and the space distribution range is large; besides, secondary atomization enables the sprayed particle size to become small, and distribution is more uniform under the squish effect, so that the oil and gas distribution uniformity is improved, and the goals of improving combustion and lowering oil consumption and emission are achieved.

Description

technical field [0001] The invention relates to the field of engine mixture gas formation and combustion, in particular to a direct-injection diesel engine collision spray diffusion combustion system. Background technique [0002] At present, due to the development trend of high-pressure injection and compact structure of direct-injection diesel engines, it is inevitable that the fuel will be blocked during the working process. As a result, the fuel deposits on the wall and forms a near-wall rich mixture. In addition, the non-uniformity of the porous spray of the direct injection diesel engine in the circumferential direction: an over-concentrated area is formed in the spray area, while there is little spray in other areas. The above factors will affect the combustion process of the diesel engine, and ultimately affect the power, economy and emission characteristics of the engine. However, the research found that a reasonable spray impingement on the wall can improve the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B23/02
CPCY02T10/12
Inventor 魏胜利刘鑫冷先银陈欢纪坤鹏王飞虎
Owner JIANGSU UNIV
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