DE3240130A1 - Double-piston internal combustion engine with 2 rigidly connected pistons and driving of the pistons from both sides - Google Patents

Abstract

Double-piston internal combustion engine as a four-stroke engine with two rigidly connected pistons, four combustion chambers, respectively above and below the pistons in a cylinder, and driving of the pistons from both sides. Due to the rigid connection of the two pistons, the processes in the remaining three combustion chambers during the movement of the pistons following a combustion are driven directly via a crankshaft. This makes possible a quieter design which uses less material and less energy. Side forces on the crankshaft bearings can be avoided by coupling two combustion units in coaxial opposition.

Description

Description:

Double piston internal combustion engine

The invention relates to an internal combustion engine in which a complete combustion unit in only one cylinder and with a single cylinder is provided by a double piston Power delivery point is made possible.

The engine is a four-stroke internal combustion engine.

So far, the petrol engine with one piston per cylinder and drive of the pistons has prevailed above all only from one side. In addition, the rotary engine with a rotary piston is still on the market. There are also several patents known for engines with drive of the piston from two sides, which however have not yet prevailed and in the Construction are different.

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In the Otto engine, after the downward movement triggered by the combustion, the piston must be moved back upwards via the crankshaft, then moved downwards and then moved upwards again.
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The invention is based on the object of providing a motor with fewer moving parts, fewer vibrations and better To enable energy utilization.

According to the invention, this object is achieved by the fixed Connection of the two pistons and double-sided drive of the pistons alternately from one of the four combustion chambers.

This enables a complete four-stroke combustion unit in just one cylinder and with just one power delivery point, in which the movement of the pistons is not even partially triggered via the crankshaft. This ensures a material-saving design of the engine _?

Since the processes triggered by the combustion in the three other combustion chambers are no longer caused by a asymmetrical power transmission are caused via the crankshaft, are less when operating this engine Expect vibrations and the engine will be quieter.

Thanks to the direct power transmission to the individual combustion chambers energy losses on the way via the crankshaft are avoided, which is why a more rational one Energy utilization can be expected.

If two motor units according to claim 1 are juxtaposed coaxially, firmly connected to each other and at the same time act in the same direction of rotation via connecting rods on a crankshaft, then there is no lateral pressure on the crankshaft bearings, which is very low Wear and smooth running result.

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Figures 1-5 serve to illustrate the invention.

Fig.5 serves to clarify the arrangement of the engine according to claim 2. Only one clock is shown. The patterns of the combustion chambers are identical to those in Figures 1-4.

In Figures 1-5, the two pistons are shown hatched and the fixed connection of the two pistons is symbolized by lateral connecting lines. The power delivery point can be done, for example, at point E shown in Figure 1. The four combustion chambers are labeled A, B, C, D. and patterned depending on the process.

The patterns of the combustion chambers on the drawing indicate the following processes:

Process 1: -

xxxxx Here the ignition of the compressed and closed takes place burning fuel mixture (in the following

called the text Neugemisch).

Process 2:

ooooo Burned fuel mixture (in the following Text called old mixture) occurs after the

Ignition following movement from the combustion chamber the end.

Process 3:

This is where new mix is found, which is compressed during the following movement.

Process 4:

The old mixture has escaped and the following movement causes the new mixture to enter the combustion chamber a.

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Description of the individual combustion cycles:

Cycle I: After the ignition of the compressed new mixture of the combustion chamber A (process 1) are due to the fixed connection - both pistons set in motion and it

new mixture is compressed in combustion chamber B (process 3),

enters the combustion chamber C new mixture (process 4) and

- Old mixture emerges from combustion chamber D (process 2).

Cycle II: Process 2 takes place in combustion chamber A.

Procedure 1 takes place in combustion chamber B.

Process 3 takes place in combustion chamber C.

Process 4 takes place in combustion chamber D,

Cycle III: Process 4 takes place in combustion chamber A,

Process 2 takes place in combustion chamber B,

Procedure 1 takes place in combustion chamber C.

Process 3 takes place in combustion chamber D

Cycle IV: Process 3 takes place in combustion chamber A Process 4 takes place in combustion chamber B Process 2 takes place in combustion chamber C Procedure 1 takes place in combustion chamber D.

The movement described above with the firing order A, B, C, D can also 'backwards', i.e. with the firing order D, C, B, A run without changing anything in the principle of motion of the double-piston engine.

Claims (2)

Heinrich Bokern Ulrichstr. 17 7060 Schorndorf, October 28th, 1982 claims: / 1 .yDouble piston internal combustion engine for driving automobiles and other movable objects, 5 characterized in that 2 pistons are firmly connected to one another a combustion chamber is located above and below the pistons, and a mixture is ignited The drive takes place alternately in one of the four combustion chambers. 2. Coupling of two double piston internal combustion engines according to claim 1, characterized in that two motor units according to claim 1 are coaxially opposed and firmly connected so that they act simultaneously in the same direction of rotation on a crankshaft.