RU2254487C1 - Internal combustion engine - Google Patents

Abstract

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed engine contains paired cylinders, cylinder block head, crankshaft with connecting rods. Paired cylinders are arranged longitudinally, low pressure cylinder being connected with fuel supply source, and high pressure cylinder, with clean air source, clean air being forced out at compression into low pressure chambers. Crank mechanism provides delay of piston of high pressure cylinder from piston of low pressure cylinder by 22° in degrees of crankshaft turning. Channel connecting cylinders is made tangential. Two stage charge burning takes place with assistance of air charge at first stage of burning contained in mixture with fuel at low compression ratio, and at second stage, air charge with high compression ratio. Gas expansion after combustion takes place simultaneously in two cylinders.

EFFECT: simplified design, increased efficiency of engine.

2 cl, 5 dwg

Description

The invention relates to mechanical engineering, in particular engine manufacturing, and can be used in the design and development of internal combustion engines (ICE).

The closest in technical solution is a prototype of a full-sized engine, given in the book: author V.M. Kushul. Meet the new type of engine. L .: Shipbuilding, 1966, p. 106. This type of engine is taken as a prototype. This engine has a double-row transverse arrangement of cylinders with one crankshaft and a system of main and trailer rods.

The disadvantage of this engine is a two-row transverse arrangement of cylinders and the presence of a trailed connecting rod, which complicates the design of the engine and reduces its durability.

The problem solved by the invention is to simplify the design and increase engine efficiency.

The problem is solved in that the internal combustion engine contains a pair of cylinders, a cylinder head, a crankshaft with connecting rods, and the paired cylinders are located in the longitudinal direction, while the low pressure cylinder is connected to a fuel power source, and the high pressure cylinder is connected to a clean air power source displaced during subsequent compression into the low-pressure combustion chamber, according to the invention, the crank mechanism ensures that the piston of the high-pressure cylinder lags behind the piston of the cylinder 22 ° low pressure angle of rotation of the shaft, the channel connecting the cylinders is made tangential, with a two-stage charge burning with sequential participation in the first stage of combustion of an air charge mixed with fuel with a low compression ratio and in the second stage of an air charge with a high degree of compression, and the expansion of gas after combustion occurs simultaneously in two cylinders.

The increase in engine power is due to the pairing of the cylinders.

The invention is illustrated by drawings, where in Fig.1 schematically shows the engine in General;

figure 2 is a view of G;

figure 3 - section aa

figure 4 is a section bb.

The proposed engine contains a cylinder block 1, a cylinder head 2, a crankshaft 3, connecting rods with pistons 4, candles 5, inserts in the cylinder head 6, bosses on the piston 7, a low pressure compression chamber 8, a high pressure compression chamber 9, a receiving pipe 10, carburetor 11, air filter 12, plugs in the head of the block 13.

The engine workflow is carried out in two cylinders: chambers of high 9 and low 8 pressure, constantly communicated with each other.

The crank mechanism provides a certain lag in the movement of the piston of the high-pressure chamber 9, which at the time of arrival of the piston of the low-pressure chamber 8 V.M.T. makes 22 ° on an angle of rotation of a shaft. The piston of the high-pressure chamber 9 in the position of V.M.T. approaches the engine head with a minimum allowable clearance, the compression pressure in the high-pressure chamber 9 becomes higher than the compression pressure in the low-pressure chamber 8. A vigorous flow of compressed air from the cylinder to the compression chamber 8 begins. The flowing air entering the cylinder with incomplete products combustion, immediately enters the combustion reaction. Due to the tangential direction of the channel connecting the cylinders, the air flowing into the chamber 8 creates a vortex rotation of the gases in the combustion chamber, providing the turbulent nature of the combustion of the entire charge. The expansion of gas after combustion occurs simultaneously in two cylinders. In this engine, the entire fuel mixture is quickly and completely burned, so the exhaust is environmentally friendly. Two-stage combustion occurs with successive participation in the first stage of combustion of an air charge mixed with fuel and having a low compression; and in the second stage, an air charge having a high compression ratio.

Claims (1)

An internal combustion engine comprising twin cylinders, a cylinder head, a crankshaft with connecting rods, the twin cylinders being arranged in the longitudinal direction, the low pressure cylinder being connected to the fuel power source, and the high pressure cylinder being connected to the power source by clean air displaced during subsequent compression into the low-pressure combustion chamber, characterized in that the crank mechanism ensures that the piston of the high-pressure cylinder lags behind the piston of the low-pressure cylinder by 22 ° in rotation On the other hand, the channel connecting the cylinders is tangential, with a two-stage charge burning with sequential participation in the first stage of combustion of an air charge mixed with fuel with a low compression ratio and in the second stage of an air charge with a high compression ratio, with expansion gas after combustion occurs simultaneously in two cylinders.

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