JPH10339166A - Internal combustion engine by opposed pistons - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly burn an air-fuel mixture, improve output, and save fuel consumption by arranging plural pistons by sandwiching a single combustion chamber, and arranging intake-exhaust valves on a cylinder side surface by facing to a single combustion chamber so that a swirl flow can be generated in the combustion chamber. SOLUTION: Plural pistons, for example, two pistons 1 and 2 are oppositely arranged so as to sandwich a combustion chamber 3, and in this single combustion chamber 3, an air-fuel mixture is compressed, and air of displacement of two times can be compressed by burning this, and the respective pistons 1 and 2 are made to receive combustion pressure of higher pressure, and high output is generated. Intake-exhaust valves are arranged on a cylinder side surface by facing to the combustion chamber 3, and a swirl can generated in the combustion chamber 3. According to this, since the respective pistons 1 and 2 receive maximum combustion pressure, a pump loss can be reduced, and heat efficiency can be improved, and fuel consumption can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat conversion system in which a single combustion chamber is shared by a plurality of pistons so that the maximum combustion pressure can be increased and effectively applied to each piston without using a charger. It increases the rate.

[0002]

2. Description of the Related Art In a conventional engine, since one piston reciprocates in one cylinder, the output is taken out, so that the conversion rate of heat energy to work is low, and it is necessary to obtain the output with the same displacement. Used a booster and the like.

SUMMARY OF THE INVENTION The present invention provides an engine which further improves the heat conversion rate of a conventional engine, increases the output without using a charging machine, improves fuel efficiency, and aims at clean exhaust.

[0004]

[Means for Solving the Problem] A plurality of pistons (temporarily two) of one feature of the present invention simultaneously compress one combustion chamber, so that the air having twice the displacement is compressed in the combustion chamber. This means that each piston has the highest combustion pressure when it is burned.

According to the present invention, a swirl flow is generated on the inner surface of the cylinder and rapid combustion is performed by setting the intake and exhaust valves on the side of the cylinder. Also, because the valve is curved
Reduce internal pressure leakage.

[0006]

EXAMPLE Assume that the displacement of each piston is 200c.
c When the compression ratio is set to 10, 200
The intake air of cc is compressed and the engine becomes 400cc compression ratio 10. The pistons on the left and right receive the maximum combustion pressure when it is burned. Conventional 2-cylinder 4
200cc for a 00cc (200cc per cylinder) engine
However, in the engine of the present invention, the two pistons share the maximum combustion pressure of 400 cc, so that the output is improved without using a charger from the time of low rotation.

Further, the engine is operated by a Miller cycle.
The closing timing of the valve in the intake process is set to half of the upper and lower dead center, and even when a 200 cc displacement is burned, the conventional 400
Each piston receives the highest combustion pressure in the cc class while reducing pump loss, improving thermal efficiency and contributing to low fuel consumption.

[Brief description of the drawings]

FIG. 1 is a sectional view of a side surface of a cylinder.

FIG. 2 is a sectional view of a piston valve.

[Explanation of symbols]

 1 piston A 2 piston B 3 combustion chamber

Claims (2)

[Claims] An internal combustion engine wherein a plurality of pistons share one combustion chamber. 2. A tappet shape for promoting the generation of swirl flow by sucking air from the side of the cylinder.