KR970006803A - 2-stroke internal combustion engine - Google Patents

Abstract

Stroke internal combustion engine in which a fuel injection chamber 20 connected to a combustion chamber 13 by a blowing port 202 is provided in a combustion cylinder 11 and is also connected to a fuel injection device 22, 10 is provided with a reciprocating piston-air compressor 25 for improved ventilation of the fuel stored in the injection chamber 20 in the case of a small additional cost, and a compression chamber 24 of the compressor is provided, Is connected to the inner chamber (15) of the crankcase (10) in the suction stroke and is also connected to the injection chamber (20) by the pressure holding valve (26). When the predetermined compression pressure is reached, the pressure holding valve 26 is opened, and the fuel amount stored in the injection chamber 20 flows out of the injection chamber 20.

Description

2-stroke internal combustion engine

Since this is a trivial issue, I did not include the contents of the text.

Figures 1 and 2 are longitudinal section views of a two-stroke internal combustion engine with a fuel injection pump according to each embodiment.

Claims (10)

A combustion piston (12) having one or more combustion cylinders (11) located in a crankcase (10) and having a combustion chamber (13) restricted in one side is coaxially guided in the combustion cylinder (11) Controls an intake port (16) for combustion air, an exhaust port (17) for exhaust and at least one transfer port (14) connecting the crankcase (10) and the combustion chamber (13) at the time of reciprocating motion, (20) having a crankshaft (19) engaged with the combustion piston (12) by a connecting rod (18) arranged in a combustion chamber (10) and separated from the combustion cylinder (11) The fuel-injection chamber 20 is connected to the combustion chamber 13 by a blowing port 202 and is connected to the fuel injection device 22 by an injection port 201. In the fuel injection device 20, (22) for storing the fuel Stroke internal combustion engine having a reciprocating piston (12; 54) driven by a crankshaft (19), in particular a hand-operated drive unit, said reciprocating piston (12; 54) Is a part of a reciprocating piston-air compressor (25) provided in the combustion cylinder (11) and the compression chamber (24) is connected to the injection chamber (20) by a pressure holding valve (26) 54) is connected to the inner chamber (15) of the crankcase (10) during an intake stroke of the crankcase (10). 2. A method according to claim 1, characterized in that the combustion piston (12) is formed as a step piston having a rear piston member (121) And the rear side piston member is locked into the guide bush 27 supported by the combustion cylinder 11 and the effective surface of the reciprocating piston in the piston step together with the inner wall of the combustion cylinder 11 and the front face of the guide bush And surrounds the compression chamber (24) together with a regulating ring shoulder (122). 3. The two-stroke internal combustion engine according to claim 2, wherein a circular leakage gap (28) is provided between the piston member (121) and the guide bush (27) smaller in diameter. 4. A device according to claim 2 or 3, characterized in that the pressure holding valve (26) is arranged between the compression chamber (24) and the injection chamber (20) in a connection line (23) extending to the transfer port 2-stroke internal combustion engine. The reciprocating piston-air compressor (25) according to claim 1, wherein the reciprocating piston-air compressor (25) is provided with a reciprocating cylinder (53) radially opened toward its inner chamber (15) And the reciprocating piston 54 is connected to the crankshaft 19 by a connecting rod 55 so that the reciprocating piston 54 takes its approximate top dead center at the bottom dead center of the combustion piston 12. [ 2-stroke internal combustion engine. 6. A reciprocating piston (54) according to claim 5, wherein the reciprocating piston (54) has a packing (57) which cooperates with the inner wall of the reciprocating cylinder (53) , And flows into the compression chamber (24) from the inner chamber (15) of the reciprocating cylinder (53), and adheres to the inner wall of the reciprocating cylinder (53) during the compression stroke of the reciprocating piston (54). The injection apparatus according to any one of claims 1, 2, 3, 5 and 6, wherein the blowing port (202) of the injection chamber (20) is connected to the transfer port (14) Is installed below the exhaust port (17) in the wall of the exhaust port (11). 8. The two-stroke internal combustion engine according to claim 7, wherein the opening pressure of the pressure holding valve (26) is adjusted to about 2 bar between the compression chamber (24) and the injection chamber (20). The fuel pump according to claim 8, wherein the fuel injector (22) is connected to the injection chamber (20) by a throttle valve (21), and the double membrane pump (30) driven by air pressure in the crankcase A metering valve 40 formed as a 2/2-way solenoid valve having a spring recoil adjustment and connected downstream of the dual membrane pump 30 for transferring fuel from the vessel 31, And a pressure regulator (41) connected to an outlet of the two-stroke internal combustion engine. The fuel injection device according to claim 8, characterized in that the fuel injection device (22) is connected to the injection chamber (20) by a throttle valve (21) A membrane piston pump 42 having valves 49 and 52 and a preliminary transfer pump 50 connected to the intake valve 49. The transfer pump 50 transfers fuel from the fuel storage vessel 31, Stroke internal combustion engine. ※ Note: It is disclosed by the contents of the first application.