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Two-stroke diesel engine combustion system and diesel engine comprising two-stroke diesel engine combustion system

A combustion system and diesel engine technology, applied in combustion engines, machines/engines, mechanical equipment, etc., can solve the problems of weak eddy current in the backflow scavenging method, complicated combustion structure or DC scavenging structure, etc., to solve the problems of weak eddy current, weight The effect of reducing and improving the scavenging efficiency

Active Publication Date: 2021-01-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]In view of the above problems, a two-stroke diesel engine combustion system and a diesel engine including the system are proposed, and a new stratified swirl scavenging method is adopted to Solve the problem that the eddy current of the backflow scavenging method is weak, which is not conducive to the combustion organization or the structure of the direct scavenging method is complicated

Method used

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  • Two-stroke diesel engine combustion system and diesel engine comprising two-stroke diesel engine combustion system
  • Two-stroke diesel engine combustion system and diesel engine comprising two-stroke diesel engine combustion system
  • Two-stroke diesel engine combustion system and diesel engine comprising two-stroke diesel engine combustion system

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Embodiment 1

[0026] refer to image 3 , which shows a three-dimensional structure diagram of a combustion system of a two-stroke diesel engine according to Embodiment 1 of the present invention, as image 3 A combustion system of a two-stroke diesel engine is shown, comprising: intake port 1, cylinder 3 and combustion chamber 4;

[0027] The intake passage 1 has at least one scavenging port 2 , and different scavenging ports 2 are connected to the cylinder 3 at different angles of inclination, so as to perform stratified swirl scavenging on the cylinder 3 .

[0028] In the embodiment of the present invention, fresh air enters the air intake port 1 and enters the cylinder 3 through the scavenging port 2. Because the inclination angle between each scavenging port 2 and the cylinder 3 is different, the fresh air enters the cylinder 3 through different scavenging ports 2. levels, so that different layers in the cylinder 3 have air entry, thus, the purpose of layered swirling scavenging can be...

Embodiment 2

[0037] A diesel engine includes the combustion system of a two-stroke diesel engine as provided in Embodiment 1 of the present invention.

[0038] Through a kind of diesel engine provided by the present invention, different scavenging ports 2 and the elevation angles of the central axis direction of the cylinder 3 can achieve stratified swirl scavenging and improve the effect of scavenging efficiency; meanwhile, different scavenging ports 2 and cylinders can The radial direction of 3 is at a preset angle of inclination, so as to form a swirl flow inside the cylinder 3, and cooperate with the structure of the ω-shaped combustion chamber at the top of the cylinder, which is beneficial to the combustion organization in the combustion chamber 4 and effectively reduces the fuel consumption rate; Compared with the traditional two-stroke direct-flow scavenging diesel piston engine, this combustion system saves the structure of the valve and valve mechanism, which makes the engine stru...

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Abstract

The invention discloses a two-stroke diesel engine combustion system and a diesel engine comprising the two-stroke diesel engine combustion system, and belongs to the technical field of engines. The system comprises an air inlet channel, an air cylinder and a combustion chamber, at least one scavenging port is formed in the air inlet channel, and the different scavenging ports are communicated with the air cylinder at different inclination angles so as to conduct layered rotational flow scavenging in the air cylinder. According to the two-stroke diesel engine combustion system, the layered rotational flow scavenging mode is adopted, scavenging of different areas can be completed, meanwhile, a vortex structure in the combustion chamber can be achieved, a good combustion organization is achieved, and the oil consumption rate of the two-stroke diesel engine is reduced.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a combustion system of a two-stroke diesel engine and a diesel engine including the system. Background technique [0002] Due to its simple structure, small size, light weight, mature technology, convenient maintenance and many other advantages, the piston engine occupies a very important position in the field of small aircraft such as drones. [0003] Compared with the traditional four-stroke piston engine, the two-stroke piston engine has a simpler structure, a higher power-to-weight ratio, and a more gentle change in torque over time, so it has broad application prospects in the field of small aircraft power in the future. [0004] The air exchange process of traditional two-stroke diesel engines mainly adopts the methods of direct current scavenging and recirculation scavenging. The direct current scavenging method has the advantages of high scavenging efficiency and strong e...

Claims

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Application Information

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IPC IPC(8): F02B25/00F02B23/00
CPCF02B25/00F02B23/00Y02T10/12
Inventor 兰旭东潘春雨周伯豪李东杰
Owner TSINGHUA UNIV
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