CN218816638U

CN218816638U - Improved two-stroke engine

Info

Publication number: CN218816638U
Application number: CN202223500663.9U
Authority: CN
Inventors: 高长生
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-07
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses an improved generation two-stroke-cycle engine, including engine body, crankcase, piston and piston rod, the top fixedly connected with cylinder of crankcase, the top fixedly connected with cylinder cap of cylinder, sliding connection is in about the piston in the cylinder, the lateral wall of cylinder and the low level that corresponds the piston and move down the stroke have seted up the air inlet, the air inlet is connected with air inlet valve, the air inlet is connected with outside booster, the gas vent has been seted up on the cylinder cap, the gas vent is connected with the air escape valve, air inlet valve uses the synchronous switching of distribution mechanism control with the air escape valve, fixedly connected with lights the spark plug of the interior oil gas of cylinder on the cylinder cap. The utility model discloses simple structure, control is convenient, can reduce the burning of machine oil, reduces air pollution.

Description

Improved two-stroke engine

Technical Field

The utility model relates to the technical field of engines, concretely relates to improved generation two-stroke engine.

Background

A two-stroke engine is an engine that performs all the processes (one cycle) required to generate power with only one reciprocating piston, and its structure can divide its effect by the ascending and descending motion of the piston. Ascending motion plays exhaust and compression effect, and descending motion plays combustion and exhaust effect, is used for on the motorcycle mostly, and two-stroke engine's air inlet is seted up on the crankcase, and oil gas is advanced to accomplish the precompression of mixed oil gas in the crankcase and is jetted into the cylinder from the scavenge port again and burn, though can the precompression mixed oil gas, but has the machine oil to mix in the crankcase, produces harmful gas after the machine oil burning, causes exhaust pollution.

The two-stroke engine disclosed in the chinese patent CN201910143622.2 solves the problem of crankcase air suction, but it still has a scavenging structure, and the layout of the air inlet and exhaust structures is not reasonable, which affects the power performance.

Therefore, how to provide an improved two-stroke engine for reducing exhaust pollution is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an improved generation two-stroke cycle engine can solve current two-stroke cycle engine exhaust pollution's problem, avoids mixing the machine oil burning problem that machine oil leads to in the oil gas.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an improved generation two-stroke engine, includes engine body, crankcase, piston and piston rod, the top fixedly connected with cylinder of crankcase, the top fixedly connected with cylinder cap of cylinder, sliding connection is in about the piston in the cylinder, the lateral wall of cylinder just corresponds the piston and moves down the low level of stroke and has seted up the air inlet, the air inlet opens and shuts and is connected with inlet valve, the air inlet is connected with outside booster and provides highly-compressed air, the gas vent has been seted up on the cylinder cap, the gas vent opens and shuts and is connected with the air escape valve, inlet valve and the synchronous switching of air escape valve, fixedly connected with ignites the spark plug of the interior oil gas of cylinder on the cylinder cap, be equipped with the fuel sprayer on the cylinder cap.

The utility model has the advantages that: the air inlet is arranged on the cylinder barrel, the mixed oil gas cannot enter the crankcase, the mixing of the mixed oil gas and engine oil in the crankcase is reduced, when the piston moves upwards, the mixed oil gas is compressed, the air inlet valve and the air outlet valve are closed, the compressed mixed oil gas is ignited through the spark plug, the piston does work downwards to output power to the crankshaft, when the piston moves downwards to a low position, the air outlet valve and the air inlet valve are opened, when pressurized air enters the cylinder barrel, the extruded waste gas is discharged from the air outlet, then the air outlet valve and the air inlet valve are closed, the piston compresses upwards, the oil nozzle performs oil injection, the high-pressure mixed oil gas is detonated at the moment of ignition to push the piston to do work, the reciprocating stroke is achieved, and the pollution problem caused by the combustor oil is reduced.

Preferably, the space enclosed by the piston, the cylinder cover and the cylinder barrel forms a combustion chamber, and the combustion chamber is sealed and isolated from the crankcase.

Preferably, the cylinder cover is fixedly connected with an oil nozzle, and an oil nozzle of the oil nozzle is positioned in the combustion chamber.

Preferably, the air inlet valve and the exhaust valve are both connected with an air distribution mechanism, the air distribution mechanism is in transmission connection with an output shaft of the crankcase, and a cam on the air distribution mechanism is connected with the air inlet valve and the exhaust valve to control the synchronous opening and closing of the air inlet valve and the exhaust valve.

Preferably, the air inlet valve and the air outlet valve are both spring check valves, and one sides of the air inlet valve and the air outlet valve, which are far away from the cylinder barrel, are respectively connected with a synchronous air distribution rod, and the synchronous air distribution rods are in transmission connection with an output shaft of the crankcase.

Drawings

FIG. 1 is a first structural view of an improved two-stroke engine of the present invention;

FIG. 2 is a second structural view of an improved two-stroke engine of the present invention;

fig. 3 is a third structural diagram of the improved two-stroke engine of the present invention.

1 engine body, 2 crank cases, 3 pistons, 4 piston connecting rods, 5 cylinder barrels, 6 cylinder covers, 7 air inlets, 8 air inlet valves, 9 air outlets, 10 exhaust valves, 11 synchronous gas distribution rods, 12 spark plugs, 13 cams and 14 oil nozzles.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the utility model discloses fig. 1 to 3, according to the utility model discloses an improved generation two-stroke engine, including engine body 1, crankcase 2, piston 3 and piston rod 4, crankcase 2's top fixedly connected with cylinder 5, cylinder 5's top fixedly connected with cylinder lid 6, sliding connection is in cylinder 5 about piston 3, air inlet 7 has been seted up to the lateral wall of cylinder 5 and the low level that corresponds piston 3 downstroke, the air inlet lets in the air, 7 switching of air inlet are connected with inlet valve 8, air inlet 7 is connected with outside booster, can provide highly-compressed air in the cylinder, gas vent 9 has been seted up on the

cylinder lid

6, 9 switching of gas vent is connected with exhaust valve 10, inlet valve 8 opens simultaneously or is closed simultaneously with exhaust valve 10, fixedly connected with lights the spark plug 12 of the oil gas that mixes in the cylinder on the cylinder lid 6.

In other embodiments, the space enclosed by the piston 3, the cylinder head 6 and the cylinder 5 forms a combustion chamber, which is sealed from the crankcase. Avoid the machine oil in the crankcase to get into in the combustion chamber, avoid the machine oil of burning to cause air pollution.

In other embodiments, the cylinder cover 6 is fixedly connected with an oil nozzle 14, an oil nozzle of the oil nozzle 14 is positioned in the combustion chamber, the oil nozzle sprays oil at the top point of the upward movement of the piston, the air inlet valve and the air outlet valve are both closed at the moment to form a closed high-pressure cavity, the oil nozzle sprays oil to form high-pressure mixed oil gas, a spark plug ignites, the high-pressure mixed oil gas detonates to push the piston to move downward to do work, and the oil leakage problem caused by the simultaneous opening and closing of the air inlet valve and the air outlet valve is effectively prevented.

In other embodiments, the intake valve 8 and the exhaust valve 10 are both connected with a valve train, a cam 13 on the valve train is connected with the intake valve 8 and the exhaust valve 10 to control the intake valve and the exhaust valve to open and close synchronously, and the valve train is in transmission connection with an output shaft of the crankcase. The valve mechanism controls the simultaneous opening and closing of the air inlet valve and the air outlet valve and uses the power provided by the crankshaft.

In other embodiments, the intake valve 8 and the exhaust valve 10 may be spring check valves, as shown in fig. 2 and fig. 3, and the sides of the intake valve and the exhaust valve away from the cylinder are respectively connected with a synchronous air distribution rod, and the opening and closing of the check valves are controlled by the air distribution rods.

The specific operation principle is as follows: the piston goes upward to the top point position, the fuel sprayer oil spout, produce the oil mixture, the spark plug ignites, the mixed oil gas detonation inflation of high pressure, it moves down and then makes the bent axle acting rotate to promote the piston, produce a large amount of waste gas simultaneously, when the piston moves down to the low level, open air inlet valve and exhaust valve through the synchronous gas distribution pole, realize supplementing the air fast, waste gas is from gas vent discharge combustion chamber under the extrusion of new entering air, reciprocating stroke, this device simple structure, operating stability is high, can avoid the combustor oil to produce harmful gas, structural arrangement is reasonable.

For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an improved generation two-stroke engine, includes engine body, crankcase, piston and piston rod, its characterized in that, the top fixedly connected with cylinder of crankcase, the top fixedly connected with cylinder cap of cylinder, sliding connection is in about the piston in the cylinder, the lateral wall of cylinder just corresponds the piston and moves down the low level of stroke and seted up the air inlet, the air inlet is connected with the air inlet valve, the air inlet is connected with outside booster, the gas vent has been seted up on the cylinder cap, the gas vent is connected with the air discharge valve, the synchronous switching of air inlet valve and air discharge valve, fixedly connected with ignites the spark plug of the interior mixed oil gas of cylinder on the cylinder cap.

2. An improved two-stroke engine according to claim 1 wherein the space enclosed by the piston, cylinder head and cylinder barrel forms a combustion chamber, said combustion chamber being sealed from the crankcase.

3. An improved two-stroke engine according to claim 2, wherein an oil injector is fixedly attached to said cylinder head, said oil injector having an oil injection port located in said combustion chamber.

4. An improved two-stroke engine according to claim 1 wherein the intake and exhaust valves are each connected to a valve train, the valve train being drivingly connected to the output shaft of the crankcase, and a cam on the valve train being connected to the intake and exhaust valves to control the synchronous opening and closing of the intake and exhaust valves.

5. An improved two-stroke engine according to claim 1, wherein the intake valve and the exhaust valve are spring check valves, and the sides of the intake valve and the exhaust valve away from the cylinder barrel are respectively connected with a synchronous gas distribution rod, and the synchronous gas distribution rod is in transmission connection with the output shaft of the crankcase.