Engine pre-combustion chamber structure and engine

A technology of engine and pre-combustion chamber, which is applied in the direction of combustion engine, machine/engine, internal combustion piston engine, etc. It can solve the problem of high methane emission of engine, achieve the effect of reducing CH4 emission, solving high methane emission and improving combustion quality
CN112648064AActive Publication Date: 2021-04-13WEICHAI POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WEICHAI POWER CO LTD
Publication Date
2021-04-13

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Abstract

The invention discloses an engine pre-combustion chamber structure and an engine. The engine pre-combustion chamber structure comprises a body extending in a first direction, and a containing space is formed in the body. In the first direction, the first end of the body is sealed by an engine cylinder cover and a spark plug, the second end of the body is provided with a connecting hole, and the containing space is communicated with an engine main combustion chamber through the connecting hole. The area, used for sealing the first end of the body, of the engine cylinder cover is provided with a flow guide part extending in the first direction. The engine cylinder cover is provided with a gas supply channel which extends away from the first end of the body from the first end of the body and inclines relative to the first direction, and the gas supply channel is connected with the flow guide part and used for supplying natural gas to the containing space in the body. According to the engine pre-combustion chamber structure, the situation that natural gas flowing into the body directly leaks into the engine main combustion chamber through the connecting hole without combustion in the body can be reduced, and the CH4 emission of the engine main combustion chamber is reduced.
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Description

technical field

[0001] The invention relates to the technical field of engines, in particular to an engine pre-combustion chamber structure and an engine. Background technique

[0002] The space above the cylinder head, cylinder liner and piston top surface on the engine is the combustion chamber, also known as the main combustion chamber, which is an important area to complete the mixing of fuel and air, combustion and push the piston to do work. Engines also typically have a pre-chamber to increase the rate of combustion. The pre-chamber is a semi-closed structure, the gas burns inside it, and the flame spreads to the main combustion chamber through the connecting hole at the end of the pre-chamber.

[0003] A reasonable pre-chamber structure is very important to the combustion and emission of the engine. Because the existing engine has a pre-combustion chamber, the combustion speed is improved. However, during the intake process, the mixture in the pre-combustion chambe...

Claims

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