Pre-combustion structure of engine
An engine and pre-combustion technology, used in combustion engines, machines/engines, internal combustion piston engines, etc., can solve problems such as difficulty in starting, and achieve the effect of increasing the concentration of the mixture and improving the stability of starting.
Active Publication Date: 2022-05-06
ZHEJIANG GEELY HLDG GRP CO LTD +3
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Problems solved by technology
[0005] The object of the present invention is to address the above-mentioned problems existing in the prior art, and propose a pre-combustion structure of the engine to solve the problem that the engine is difficult to start when using lean combustion , while ensuring the timeliness of combustion exhaust gas discharge
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[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0025] Such as figure 1 As shown, the pre-combustion structure of the engine, the engine includes a cylinder block 5 and a cylinder head 6 with a mounting surface 61, the cylinder block 5 is pierced with a reciprocating piston 7, when the piston 7 moves to the top dead center, the piston 7 Above the top surface, the space below the installation surface 61 forms the main combustion chamber 1 for the combustion of the mixed gas. The installation surface 61 is fixedly connected with a hemispherical isolation cover 8. A pre-combustion chamber 2 for igniting the mixed gas in the main combustion chamber 1 is enclosed and formed, and a combustion-supporting hole 81 is opened on the isolation cover 8 . The cylinder head 6 is prov...
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The invention provides a pre-combustion structure of an engine, and belongs to the technical field of engines. The problem that an existing engine is difficult to start under the lean-burn working condition is solved. The pre-combustion structure of the engine comprises a main combustion chamber for mixed gas to enter and exhaust waste gas and a pre-combustion chamber for igniting the mixed gas in the main combustion chamber, a spark plug is arranged in the pre-combustion chamber in a penetrating mode, the pre-combustion chamber is communicated with the main combustion chamber, and the pre-combustion structure further comprises a negative pressure module for forming negative pressure. A vent hole communicated with the negative pressure module is formed in the inner wall of the pre-combustion chamber, when mixed gas enters the main combustion chamber, the negative pressure module reduces the pressure of the pre-combustion chamber to enable the mixed gas in the main combustion chamber to enter the pre-combustion chamber, and when the main combustion chamber exhausts waste gas, the negative pressure module increases the pressure of the pre-combustion chamber to enable waste gas in the pre-combustion chamber to be exhausted. The pre-combustion structure of the engine has the advantages that the engine can be started under the working condition of lean combustion, and meanwhile the timeliness of exhaust of combustion waste gas is guaranteed.
Description
technical field [0001] The invention belongs to the technical field of engines and relates to an engine pre-combustion structure. Background technique [0002] The engine usually obtains kinetic energy by burning the mixture of air and fuel or gas inside the engine, but the fuel and gas are difficult to ignite spontaneously and require an ignition device to ignite. The existing internal combustion engine comprises a cylinder body and a cylinder head with an intake passage and an exhaust passage. The cylinder body is pierced with a piston capable of reciprocating movement. The combustion chamber or the main combustion chamber is formed below, and both the intake passage and the exhaust passage can communicate with the combustion chamber. The cylinder head is provided with an intake valve to control the opening and closing of the intake passage, and an exhaust valve to control the opening and closing of the exhaust passage. , injectors for injecting fuel and spark plugs for i...
Claims
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IPC IPC(8): F02B19/12F02B19/16
CPCF02B19/12F02B19/16Y02T10/12
Inventor 魏庆山陈旗奇萨图格日乐杨宇赵福成王瑞平肖逸阁
Owner ZHEJIANG GEELY HLDG GRP CO LTD