SU1470988A1 - Ic-engine and method of operation thereof - Google Patents

Abstract

The invention can be used in engines with switchable cylinders and allows an increase in engine efficiency. A combustible mixture of air and fuel is prepared in multi-chamber carburetor 9 and fed through the main intake channel 2 into at least one main cylinder 1. As the engine load increases, at least one additional cylinder 3 is connected to work by opening the body 6 by changing the cross section of the additional section the inlet channel 4 and supplying it with a combustible mixture. The amount of the mixture supplied to the additional cylinders is kept constant, and the load is controlled by changing the amount of the mixture supplied to the main cylinder by turning the body 5 changing the flow area of the main intake channel 2. Both bodies 5 and 6 are connected to engine control mechanism 7, and The organ 6 is adapted to be installed in two fixed positions: completely closing or completely opening the bore section of the additional intake passage. 2 sec. and 2 z. p. f-ly, 2 ill.

Description

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The invention relates to mechanical engineering, in particular to engine building, in particular to engines with switchable cylinders.

The purpose of the invention is to increase the efficiency of the engine.

Figure 1 presents the scheme of the movement of bodies with a branched intake pipe

the main channel 2 to the intake manifold 8.

The engine (figure 1) works as follows.

In the main intake duct 2, by means of a fuel-air mixture formation means 9, an air-air mixture is prepared by heating, which delivers

wire; figure 2 - diagram of the engine, s in the main cylinder 1 on the main

in which the additional inlet channel is made in the form of a branch from the main one.

The engine contains at least one main cylinder 1 with the main inlet channel 2, one additional cylinder 3 with an additional inlet channel 4, bodies 5 and 6 of the change in flow area, placed in each intake channel and St. - 20 body 6 changes through the passage with mechanism 7 engine management, intake manifold 8 with means for forming a fuel-air mixture 9, connected to the inlet ducts of the cylinders. The body 6 for changing the flow area of each additional inlet channel 4 is arranged to be installed in two fixed positions: shut off or completely opening the channel section, and the body 5 for changing the flow area of the main channel 2 is arranged to install it in any intermediate position.

f

The inlet line 8 (FIG.) Is branched, each branch of which is connected to the inlet channel. The means 9 for forming the air-fuel mixture are divided into the foundations-40 additional channel along the branch

10 and at least one additional AND camera. The main chamber 10 is located in one of the branches and is connected to the main inlet 2, and each additional camera 11 is placed in another branch and is connected to the additional inlet 4.

The engine (figure 2) is equipped with an inlet pipe 8 connected to

The main inlet channel 2 and the additional inlet channel 4 are designed as a branch from the main channel 2. The means 9 for forming the top of the air / air mixture are installed in the inlet pipe 8 and the body 5 for changing the flow area of the main inlet channel 2 is located between the branch and the connection point

the inlet channel 2. At low loads, the organ 6 of the change in flow area of the additional inlet channel 4 is closed. When the engine load is changed and the amount of the mixture supplied is higher than the threshold value, an additional cylinder 3 is connected to the operation due to the complete opening

No additional inlet channel 4. The amount of the mixture supplied to the additional cylinder 3 is kept constant by preparing the mixture in the additional chamber 1I, and the engine load is controlled between two threshold values by changing the amount of mixture supplied to the engine. -, a new cylinder 1 by changing the flow area of the main intake channel 2 body 5.

The engine according to the variant shown in figure 2, works in the following way.:.

The air-fuel mixture, which is prepared in the main pipeline, is fed into the main cylinder 1 through the main inlet 2 and into the

0

five

from the main channel. At low loads, the organ 6 of the change in flow area of the additional inlet 4 is closed. When the engine load changes and the amount of the supplied mixture increases above the threshold value, the additional cylinder 3 is connected to operation due to the complete opening of the organ 6 by changing the flow area of the additional intake channel 4.

The fuel mixture is distributed between the main cylinder 1 and the additional cylinder 3. The engine load is controlled between two threshold values by changing the quantity of the mixture prepared by means of 9

forming an air-fuel mixture, by changing the flow area of the inlet pipe 8 by the authority 5.

Claims (4)

1. A method of operating an internal combustion engine by preparing an air-fuel mixture, supplying it to at least one main cylinder controlling the amount of the mixture supplied when the engine load changes and if the load increases above the specified value of the mixture supply to alternately connected additional cylinders, the fact that, in order to improve engine efficiency, the amount of fuel-air mixture supplied to the additional cylinder is kept constant, and the load control produced by changing the amount of the mixture in the main cylinder. 2. Internal combustion engine, 25 len in another branch and connected containing at least one primary cylinder with a primary intake passage, at least one additional cylinder with an additional intake passage, body orifice members arranged in each intake passage and associated with an engine control mechanism, and an intake manifold with means for forming an air-fuel mixture , connected to the cylinder inlet channels, characterized in that, in order to increase efficiency, the organs for changing the flow area of each additional channel are arranged to be installed in two fixed positions: the full overlap position and the full canal opening position. la, and the organ for changing the flow area of the main channel is made with the possibility of installing it in any intermediate position. 3. The engine according to claim 2, characterized in that the means for forming the air-fuel mixture are divided into the main and at least one additional chambers, the inlet pipe is made branched, the main chamber is installed in one of the branches and connected to the main inlet channel and each an additional camera was installed with an additional inlet. 4. The engine according to claim 2, which is based on the fact that the additional inlet channel is made in the form of a branch from the main channel and the organ for changing the flow area of the main channel is placed between the branch and the connection point to inlet pipe.