Engine and fuel in-cylinder layered compression ignition method
An engine and fuel technology, applied in engine components, combustion engines, machines/engines, etc., can solve the problems of low compression ratio, difficulty in forming a stable and suitable oil-gas mixture, and low thermal efficiency of gasoline engines, and achieve the effect of improving thermal efficiency.
Active Publication Date: 2020-04-03
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
[0002] The compression ratio of the existing ignition gasoline engine is much lower than that of the compression ignition diesel engine due to the limitation of knocking
Existing gasoline engines have relatively low thermal efficiency since the thermal efficiency of the engine is directly related to the compression ratio
[0003] At present, gasoline engines mainly use tumble flow stratification, because the tumble flow is easy to break during the compression process, and the retention is poor. The stratified mixed gas formed by the intake stroke often cannot be maintained until before ignition, making it difficult to form stable and suitable oil and gas near the spark plug. Mixed gas, not conducive to the advantages of stratification
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] figure 1 It is a partial structural schematic diagram of the engine of the present invention. Such as figure 1 As shown, the engine 10 includes multiple sets of cylinders 11 , cylinder heads 12 , pistons 13 and fuel injectors 14 . The engine 10 of the present invention is a gasoline engine, and the compression ratio of the engine 10 is 13-17, which is higher than that of the existing gasoline engine.
[0030] The end of the cylinder 11 is closed, and the cylinder head 12 is arranged on the open end of the cylinder 11 .
[0031] The cylinder head 12 is provided with a spiral intake passage 121 , a tangential intake passage (not shown in the figure) and an exhaust passage 123 . The spiral intake passage 121, the tangential intake passa...
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The invention relates to an engine. The engine comprises an air cylinder, a cylinder cover, a piston and an oil injector; the cylinder cover is arranged the air cylinder; the piston is movably arranged in the air cylinder; a combustion chamber is formed between the cylinder cover and the piston; the oil injector is arranged on cylinder cover; the fuel injector is used for injecting fuel into the combustion chamber; a spiral air incoming channel and an air outgoing channel are arranged on the cylinder cover; a waste gas guide channel is connected between the spiral air incoming channel and theair outgoing channel; a waste gas control valve for controlling waste gas flow is arranged on the waste gas guide channel; and when the engine is in an air inlet stroke, waste gas and air pass throughthe spiral air incoming channel so as to form a vortex mixed gas, and the vortex mixed gas enters the combustion chamber of the air cylinder. According to the engine, knocking caused by spontaneous combustion of the mixed gas at the tail end of the gasoline fuel under the condition of a high compression ratio can be avoided; and heat efficiency is improved. The invention further relates to a fuelin-cylinder layered compression ignition method.
Description
technical field [0001] The invention relates to the technical field of engine compression ignition, in particular to a stratified compression ignition method in an engine and a fuel cylinder. Background technique [0002] The compression ratio of existing ignition gasoline engines is much lower than that of compression ignition diesel engines due to the limitation of knocking. Since the thermal efficiency of the engine is directly related to the compression ratio, the thermal efficiency of existing gasoline engines is relatively low. [0003] At present, gasoline engines mainly use tumble flow stratification, because the tumble flow is easy to break during the compression process, and the retention is poor. The stratified mixed gas formed by the intake stroke often cannot be maintained until before ignition, making it difficult to form stable and suitable oil and gas near the spark plug. Mixed gas is not conducive to exerting the advantages of stratification. Contents of ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02B75/12F02F1/42F02F1/24F02F3/00F02M26/01
CPCF02B75/12F02F1/242F02F1/4285F02F3/00F02M26/01F02B17/00F02B23/06F02F1/24F02F1/42F02M35/104Y02T10/12
Inventor 杜家坤陈泓李钰怀冶麟
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD