DE1451662A1 - Internal combustion engine - Google Patents

Description

1451862

PATENT LAWYERS

DIPL-INQ. JOACHIM STRASSE, HANAU. DR-INQ, ARNQ SCKM (Dt, MaNCHEN «45 HANAU · FRA # * K« «WHE ** AN» S-1 * n · POSTBOX 7 »J · TEL. 20803 · TELEQRAMME: HANAUPATENT Römerstrasse 19

P 14 51 662.2 October 9, 1968

Frank Stelzer ■■ · ■ ·. ■ Str / Jg - 8109

645 Hanau / Main

Internal combustion engine

The invention relates to a two-stroke internal combustion engine with a symmetrical, free-flying stepped piston with two annular, central pre-compression chambers and axially external combustion chambers. Such a one Machine is known. The difficulty with free piston machines is that they are only indirect let apply. Mechanical work cannot be carried out immediately.

In contrast, the invention proposes the combustion chambers to be annular in shape, the piston being extended axially beyond the combustion chambers and the housing. This makes it possible, with an advantageously symmetrically designed and working machine, to do any work, For example, a compression work can be carried out through the stepped piston, which is freely accessible on both sides.

According to one embodiment, the piston is hollow, preferably conical hollow. The hollow interior is initially used for cooling. But it can also be used as a working part of the machine will. The conicity of the hollow interior creates the possibility of compressing or closing any medium support financially. At low frequencies it will be necessary to

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PATENT Attorney DIPL-INQ. JOACHfM STRASSE, HANAU- - * J £ f) * ί ID B 2Γ

a flutter valve that opens in the direction of flow is to be provided. At higher frequencies, for example from 15,000 Vibrations that can be easily achieved with the machine are, the medium movement or medium acceleration takes place due to the conicity of the cavity even without a flutter valve.

According to the accompanying drawing, in one embodiment of the machine a cylinder with a cylinder wall 12 available. In the interior there is a step-shaped, free-flying piston 14. The stages are essentially formed by two annular disks 18. The cylinder interior has a center piece 22 in which the piston 14 by means of Piston rings 40 is guided and sealed. Symmetrically on the middle piece 22 close to the right and left annular Loading chambers 24. Beyond the piston steps 18 there are two combustion chambers 26 axially outward. The fuel gas enters the loading chambers 24 via inlet slots 30. above Äuslaßschlitze 32 and through overflow channels 34 get the precompressed gas into inlet slots 36 and from there into combustion chambers 26. Leave after ignition and expansion the burned gases according to the principle of the well-known cross-flow purging the combustion chambers 26 through the exhaust ports

Spark plugs 32 protrude into combustion chambers 26 as an ignition aid into it.

The axially extending beyond the combustion chambers 26 also Extensions 50, 52 of the piston 14 are guided and sealed by means of piston rings 40. Even the ring-shaped Step 18 of piston 14 has piston rings 40.

In the illustrated embodiment, the piston a hollow interior 48 which is conical in shape

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PATENT Attorney PlPU-INQ. JOACHIM STRASSE, HANAU i / C * 1 C * C *}

and with its help any medium due to the high oscillation frequency of the piston in the machine can be compressed.

Claims ;

909 806/0377

Claims (3)

Expectations : 1.y two-stroke internal combustion engine with a symmetrical, ^ free-flying stepped piston with two annular, central supercharging chambers and axially outer combustion chambers, * characterized in that the combustion chambers are annular, the piston being extended axially beyond the combustion chambers and the housing. 2. Internal combustion engine according to claim 1, characterized g e k e η η ζ e i c h ne t that the piston is hollow. 3. An engine according to claims 1 and 2, characterized e.kenn g * z eic h η et that the hollow interior of the piston is conical. 09806/0377