Air-assisted injection device for two-stroke engines
A technology for injection devices and engines, which is applied to fuel injection devices, engine components, machines/engines, etc. It can solve the problems of mixture gas leakage, high oil consumption of lubricating oil, and easy wear of parts, so as to prevent leakage and reduce fuel consumption.
Inactive Publication Date: 2017-06-13
高云
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Problems solved by technology
At this time, the intake hole is closed, and the combustible mixture sealed in the crankcase is compressed; when the piston is close to the bottom dead center, the exhaust hole opens, and the exhaust gas rushes out; Cylinder, expel exhaust gas, carry out ventilation process, combustible mixture gas is discharged from the exhaust port, resulting in high carbon content in the exhaust gas
Because of this working process, it brings defects: the mixture gas leaks when the two-stroke engine exhausts, and the pollution is large; the combustion of lubricating oil leads to high oil consumption of lubricating oil; the parts are easy to wear
Method used
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[0020] The present invention mainly adds the air-entrained injection device of the two-stroke engine, so as to reduce the leakage of the mixed gas and reduce the pollution. The present invention will be further described below with reference to the drawings and specific embodiments.
[0021] During the downward movement of the piston of the present invention, the mixed gas enters from the intake port 102 on the outer wall of the cylinder, passes through the one-way intake valve 501 of the piston sleeve 5, and enters the piston sleeve 5. This is because the piston sleeve 5 is blocked by the limiting disk 4 When the piston 3 continues to move downward, an air pressure difference is generated. The air pressure in the piston sleeve 5 is lower than the outside air pressure, and the mixed gas enters the piston sleeve. During the movement of the piston from bottom dead center to top dead center, the combustible gas mixture in the piston sleeve 5 is first compressed by the upward piston 3...
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The invention relates to an air-assisted injection device for two-stroke engines, which belongs to the technical field of engines. In the technical solution adopted by the invention, the air-assisted injection device comprises an air cylinder, a spark plug, a piston, a connecting rod, a crankcase, a limit disk, and a piston bush, the spark plug and the piston are located on the air cylinder, the piston is connected to the connecting rod, the crankcase, the limit disk and the piston bush, the air cylinder is provided with an air inlet and an exhaust outlet, one end of the connecting rod is connected to the piston, the other end of the connecting rod is connected to a crankshaft, the piston bush can sleeve the piston, the piston bush is provided with a first air hole, an injection hole, a check valve and a needle valve channel, the needle valve channel communicates with the first air hole and the injection hole, a needle valve is arranged in the needle valve channel, the needle valve located in the needle valve channel can extend and retract under the action of external force, the limit disk is located at the mouth of the crankcase, and when moving down to the lowest point, the piston bush can be stuck by the limit disk. The advantages of the invention are as follows: when the air-assisted injection device disclosed by the invention is used, the leakage of mixed gas can be effectively prevented, and the consumption of lubricating oil is reduced.
Description
Technical field [0001] The invention relates to an air-entrained injection device of a two-stroke engine, belonging to the technical field of engines. Background technique [0002] The so-called two-stroke engine means that two strokes of piston movement are required to complete a power cycle. There are three holes on the cylinder block, namely the intake hole, the exhaust hole and the ventilation hole. These three holes are respectively closed by the piston at a certain time. The working cycle consists of two strokes: 1. The first stroke: the piston moves upward from bottom dead center, and the three air holes are closed at the same time, and the mixed gas entering the cylinder is compressed; when the intake hole is exposed and opened, the combustible mixture flows into Crankcase. 2. Second stroke: When the piston is compressed to near the top dead center, the spark plug ignites the combustible mixture, and the gas expands to push the piston down to perform work. At this time...
Claims
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IPC IPC(8): F02F3/00F02B75/02F02M57/00F02M61/06
CPCF02F3/0015F02B75/02F02B2075/025F02M57/00F02M61/06
Inventor 高云
Owner 高云