CN101397935A

CN101397935A - Two-stroke combustion engine sharing combustion chamber

Info

Publication number: CN101397935A
Application number: CNA2007101333666A
Authority: CN
Inventors: 周树俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2009-04-01

Abstract

The invention relates to a core design of a two-stroke internal-combustion engine with a shared combustion chamber. The shared combustion chamber is arranged in the middle of cylinders; an air inlet and an air outlet are respectively arranged at the two sides of the combustion chamber; the two sides of the combustion chamber can be considered as two cylinders which are internally provided with a piston respectively used for heat work conversion. When air change is carried out, as one end is only provided with the air inlet while the other end is only provided with the air outlet, new air drives out waste air in a shape of a 'horizontal line' during the whole air change process, thus changing the 'U'-shaped roundabout manner of air intake and exhaust in the past into a 'horizontal line' shaped through-flow manner of air intake and exhaust. The 'horizontal line' shaped air flowing manner is better than the 'U'-shape round-about manner of air intake and exhaust no matter for the spatial morphological characters of gas in the cylinders at a certain time or for gas flowing characters during the whole process, thereby improving efficiency and reducing fuel oil consumption and waste gas emission.

Description

Two-stroke combustion engine sharing combustion chamber

Technical field

The present invention relates to a kind of two stroke IC engine.

Background technique

In the present existing technology, the firing chamber of two stroke IC engine is positioned at the top, and suction port on the cylinder ancient piece of jade, round, flat and with a hole in its centre and relief opening all are positioned at the Lower Half of cylinder body, and most area is all on same cross section.In the gas exchange process, because suction port and relief opening lean on very closely on physical space distributes, the new gas of a part has directly been arranged goes out, and this is to cause a too high reason of CH compound in the waste gas; The new gas of a part need experience the upwards downward turning movement in back of an elder generation in addition, part waste gas also need experience the circuitous of a U type simultaneously, fusion has taken place in the new waste gas body of part in two turning movements, causing some new gas to be arranged goes out, some waste gas but are left in the cylinder, and this is to cause second too high reason of CH compound in the waste gas.No matter which is main to these two reasons, and that is less important, has all caused present two stroke IC engine fuel consumption too high, with serious pollution problem.

In view of this, the purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective, raise the efficiency, reduce fuel consume, reduce the two-stroke combustion engine sharing combustion chamber of toxic emission.

Summary of the invention

Core design of the present invention is the centre that the firing chamber is arranged on two cylinders, called after is combustion chamber shared, suction port and relief opening are separately positioned on the both sides of firing chamber, respectively be provided with a piston in two cylinders, be provided with certain angle between two cylinders, when angle is that 180 degree and 0 are respectively that level is to pushing away mode and two cylinder modes arranged side by side when spending, be two special cases of the present invention, when angle is 180 degree, when the cylinder diameter of two cylinders equates again, be the special case in the special case of the present invention, can be called a cylinder two plug levels pushing away the mode two-stroke combustion engine sharing combustion chamber.

Cylinder two plug levels among the present invention are achieved in that to pushing away the mode two-stroke combustion engine sharing combustion chamber two-stroke combustion engine sharing combustion chamber is made up of combustion chamber shared cylinder and the combustion chamber shared cylinders of the secondary main body of two two stroke IC engines, the firing chamber of combustion chamber shared cylinder is arranged at the cylinder middle part, suction port is arranged on a side of cylinder, relief opening is at opposite side, the secondary main body of two stroke IC engine is by piston, connecting rod, bent axle, compositions such as casing, the connection of each one of pair main body is identical with traditional two stroke IC engine, two pistons place combustion chamber shared cylinder in mode head to head, combustion chamber shared cylinder and two secondary main bodys of two stroke IC engine are fused, two bent axles are under the situation of certain phase difference, couple together with the synchronous retaining mechanism of crank phase, also link up between two crankcases, be furnished with two one-way valves of opening to the suction port direction in the breathing pipe with breathing pipe.The ignition system of two-stroke combustion engine sharing combustion chamber can slightly adjust according to actual conditions on the basis of continuing to use present electronic ignitin system substantially or improve, and also can use advanced numerical control igniting.For powerful two stroke IC engine, by with above-mentioned two two-stroke combustion engine sharing combustion chambers, with combustion chamber shared center line is that the scheme with the secondary disjunctor solves behind the Rotate 180 degree, cancel the breathing pipe between above-mentioned crankcase, and on two crankcases of burning the same side, be provided with ventilating hole.

Structure by in sum as can be known like this, because an end has only suction port, and the other end has only relief opening, the new gas of whole gas exchange process is " one " font waste gas is driven away, like this with regard to fundamentally solved suction port and relief opening on physical space distributes, lean on very near problem, also solved the problem that the new waste gas of " U " font scavenging mixes mutually simultaneously, made the new gas in the cylinder very pure.Raise the efficiency thereby reach, reduce fuel consume, reduce the purpose of toxic emission.Such design also has a benefit to be exactly: realize alterable compression ratio easily, thereby have the adaptability to the different labels fuel oil.

Description of drawings

Fig. 1 is the schematic representation of two-stroke combustion engine sharing combustion chamber of the present invention.

Fig. 2 is the schematic representation of secondary disjunctor two-stroke combustion engine sharing combustion chamber of the present invention.

Among the figure: 1,2, the two stroke IC engine main body, 3, suction port, 4, relief opening, 5, breathing pipe, 6,7, one-way valve, 8, combustion chamber shared cylinder, 201,202, crankcase breather.

Below in conjunction with accompanying drawing the present invention is elaborated.

Embodiment

As shown in Figure 1, the two-stroke combustion engine sharing combustion chamber main body is by two secondary main bodys [1] and [2] of relatively independent two stroke IC engine, form by combustion chamber shared cylinder [8] connection, the firing chamber of combustion chamber shared cylinder is positioned at the middle part of cylinder, the right-hand member of combustion chamber shared cylinder is provided with suction port [3], left end is provided with relief opening [4], two crankcases of secondary main body [1] and [2] link to each other by breathing pipe [5], the place of going up near suction port [3] at breathing pipe [5] is provided with one-way valve [7], and the place of close secondary main body [1] crankcase is provided with one-way valve [6].

As shown in Figure 2, secondary disjunctor two-stroke combustion engine sharing combustion chamber is formed by connecting by two two-stroke combustion engine sharing combustion chambers, breathing pipe [5] in the single disjunctor two stroke IC engine is cancelled, and is provided with ventilating hole [201], [202] on two crankcases of the same side.

Claims

1, two-stroke combustion engine sharing combustion chamber, it is characterized in that: two-stroke combustion engine sharing combustion chamber is made up of combustion chamber shared cylinder and two secondary main bodys of two stroke IC engine, the firing chamber of combustion chamber shared cylinder is arranged at the cylinder middle part, suction port is arranged on a side of cylinder, relief opening is at opposite side, the secondary main body of two stroke IC engine is by piston, connecting rod, bent axle, compositions such as casing, the connection of each one of pair main body is identical with traditional two stroke IC engine, two pistons place combustion chamber shared cylinder in mode head to head, combustion chamber shared cylinder and two secondary main bodys of two stroke IC engine are fused, two bent axles are under the situation of certain phase difference, couple together with the synchronous retaining mechanism of crank phase, also link up between two crankcases, be furnished with two one-way valves of opening to the suction port direction in the breathing pipe with breathing pipe.