Diesel engine combustion chamber and diesel engine
A combustion chamber and diesel engine technology, applied in the direction of combustion engines, machines/engines, mechanical equipment, etc., to achieve the effects of reducing soot emissions, good combustion, and improved combustion and emissions
Active Publication Date: 2022-08-02
FAW JIEFANG AUTOMOTIVE CO
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Problems solved by technology
[0003] The combustion chamber pit on the piston of a traditional diesel engine is a rotary structure. In practice, it is found that this rotary structure cannot make full use of the cylinder center and the external clearance space and oxygen above the top surface of the piston when the piston descends.
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[0032] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show some but not all of the parts related to the present invention.
[0033] In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. Fo...
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The invention relates to the technical field of automobiles, in particular to a diesel engine combustion chamber and a diesel engine. The diesel engine combustion chamber comprises a lip which is formed in an opening of the combustion chamber in the circumferential direction of the combustion chamber; the first boss is convexly arranged at the bottom of the combustion chamber; the second boss is arranged at the bottom of the combustion chamber in a protruding mode, the second boss and the first boss are arranged in a spaced mode, and the first boss and the second boss are connected in an arc transition mode; the concave pits are formed in the bottom surface provided with the combustion chamber in the circumferential direction of the first boss and the circumferential direction of the second boss; and the convex ridge is arranged at the joint of the second boss and the pit. By means of the second boss and the convex ridge, rollback fuel oil flow division can be achieved, part of fuel oil is guided to flow to the outer clearance space above the top face of the piston, part of fuel oil is guided to flow to the center of the air cylinder through the first boss, meanwhile, it is guaranteed that enough space exists at the bottom of the pit, and therefore the fuel oil in the cylinder is distributed more evenly; and combustion and emission are improved.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a diesel engine combustion chamber and a diesel engine. Background technique [0002] With the development of the automobile industry, more and more automobiles have entered people's production and life, bringing great convenience to people's lives. Most of the existing automobiles consume fossil energy. Because fossil energy is non-renewable energy, and the combustion of fossil energy is not well organized, it will produce a large amount of emissions and pollute the environment. Energy saving and emission reduction has become an urgent problem to be solved in the field of internal combustion engines. Among them, diesel engines are limited by the form of fuel injection. In fact, fuel is concentrated in local combustion, resulting in high temperature and oxygen depletion, and more particulate and nitrogen oxide emissions. If the fuel can get more oxygen and burn in a larger ...
Claims
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IPC IPC(8): F02B23/06F02F3/26
CPCF02B23/0678F02F3/26Y02T10/12
Inventor 金华玉刘爽倪松伟侯福建李达包宁胡芳吕晓刚崔晓娟
Owner FAW JIEFANG AUTOMOTIVE CO