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High-efficiency low-emission time stratified scavenging small two-stroke gasoline engine

A low-emission, high-efficiency technology, applied in the direction of cylinders, carburetors, cylinder heads, etc., can solve the problems of exhaust gas pollution and unreasonable gas paths, and achieve the effect of improving ventilation efficiency

Pending Publication Date: 2021-10-29
ZHEJIANG PIONEER MACHINERY & ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-efficiency and low-emission time-stratified scavenging small two-stroke gasoline engine to solve the problem of large exhaust gas pollution caused by the unreasonable gas path of the prior art small two-stroke gasoline engine

Method used

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  • High-efficiency low-emission time stratified scavenging small two-stroke gasoline engine
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  • High-efficiency low-emission time stratified scavenging small two-stroke gasoline engine

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] Such as Figure 1-Figure 7 As shown, a time-layered scavenging small two-stroke gasoline engine with high efficiency and low emission of the present invention includes a right crankcase 1, a left crankcase 2, a crankshaft 3, a connecting rod 4, a cylinder 6, an intake pipe 7, an accelerator 8, Double chamber carburetor 9, choke valve 10, pure air channel 11, gas storage cavity 12, piston 13, piston pin 14, spark plug 15, muffler gasket 16, exhaust port 17, muffler 18, bearing 19, Oil seal 20, left scavenging air cover plate 21, right scavenging air cover plate 22, left scavenging air port 23, right scavenging air port 24.

[0042] First, the right crankcase 1 and the left crankcase 2 are combined to form a crankcase chamber with an inner cavity, and the axially horizontal bearings 19 and oil seals 20 are respectively pressed into the crankcase c...

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Abstract

The invention discloses a high-efficiency low-emission time stratified scavenging small two-stroke gasoline engine. The gasoline engine comprises a crankcase chamber and an air cylinder which communicate with each other. A piston is arranged in the air cylinder, air storage cavities are formed in the side faces of the piston, one end of a pure air channel in the piston is arranged on the side face of the piston, and the other end of the pure air channel communicates with the air storage cavities. A mixed gas inlet, a pure air inlet, scavenging ports and an exhaust port are formed in the wall of the air cylinder, an air inlet pipe and a double-cavity carburetor are further included, one end of the air inlet pipe is connected to the position, where the mixed gas inlet and the pure air inlet are located, of the wall of the air cylinder, the other end of the air inlet pipe is connected with the double-cavity carburetor, scavenging chambers are formed in the positions, corresponding to the scavenging ports, of the outer wall of the air cylinder, and the bottoms of the scavenging chambers communicate with the interior of the air cylinder. The gasoline engine can effectively reduce the pollution of discharged tail gas.

Description

technical field [0001] The invention relates to the field of small two-stroke gasoline engines, in particular to a high-efficiency and low-emission time-layered scavenging small two-stroke gasoline engine. Background technique [0002] Due to its compact structure, light operation, high power-to-weight ratio, and low production and maintenance costs, small two-stroke gasoline engines are widely used in agricultural and forestry machinery, gardening and greening, aircraft model engines and other fields that require strong power performance and are light and portable. After decades of development, the annual output of domestic general-purpose small two-stroke gasoline engines accounts for more than 40% of the total output of similar engines in the world during the same period. [0003] The common two-stroke gasoline engine currently on the market arranges the exhaust port, the scavenging port and the intake port in order on the cylinder, and uses the upward movement of the pis...

Claims

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Application Information

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IPC IPC(8): F02B25/20F02B29/00F02F1/22F02M19/00
CPCF02B25/20F02B29/00F02F1/22F02M19/00F02B2700/037Y02T10/12
Inventor 刘永根杨慧明刘运申秦义明姜雪琨宋雄伟
Owner ZHEJIANG PIONEER MACHINERY & ELECTRON
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