DE8111294U1 - COMBUSTION ENGINE WITH ROTARY VALVES - Google Patents

Description

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The invention relates to an internal combustion engine V with rotary valves,

In valve-controlled combustion engines, mostly tulip valves, but also rotary valves (rotary valve, roller valve) used. These rotary valves can, for example, be designed as plates, disks or rollers, which are move uniformly or unevenly and temporarily release openings that allow gas exchange.

In such arrangements, which have been used up to now, strongly changing, sometimes great forces act on the valves by the pressures in the cylinder. These forces must be absorbed by correspondingly large bearings, which ensure the proper movement of the valves.

The invention aims to provide a remedy here. For this purpose, the valve or valves are attached so that the (At least 2) areas of the valves on which the gas pressure acts are arranged so that these gas forces interact counteract.

A rigid connection between the valve surfaces lifts them up the gas forces at least partially.

This reduces the forces on the bearings of the rotary valves.

The advantages achieved by the invention are essentially to be seen in the fact that the gas forces within the Rotary valve system cancel each other out and do not affect the bearings. These serve to absorb the inertial forces of the Valves.

In the following the invention is based on one only

a drawing illustrating an embodiment is explained in more detail.

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The drawing shows parts of an engine according to the invention in two sections.

Here two rotary slides 1, 2 are designed, which are arranged on two sides of the cylinder 3. The rotary valve 1, 2 are rigidly connected by the shaft 4. The cylinder 4 has two openings 5, 6 opposite each other and are covered (closed) by the rotary valves 1, 2. Only if the opening 7 or 8 is through the rotation of the valves coincides with the opening 5 or 6, one (two) ways for gas exchange is (are) free.

Due to the pressure difference between the cylinder interior and the environment, a gas force A ₁ , A ₂ acts on each of the rotary valves 1, 2 in the closed state. The two forces A ₁ , A ″ act in opposite directions and cancel each other out completely or partially due to the rigid connection 4.

Summary version:

Arrangement of rotary valves to control the gas exchange |

for internal combustion engines §

In this arrangement, rotary valves are mounted in the cylinder head so that the gas forces on several surfaces of the Rotary valve act.

In order to reduce the load on the rotary valve bearing, the rotary valves are rigidly connected to one another, so that the forces acting on the slide can at least partially cancel each other out.

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Claims (3)

! - ■ "■ ■ '~~ ——' τ •« ft f P β · ft pg Haft · Berngrubttf *: Ga ^ buika: · ·:: ·: · '' · Patent Attorneys 3183 Ulrich Wassermann, Hoghfarbstrasse 14, 8006 Zurich, Switzerland internal combustion engine with rotary valves protection claims 1. Internal combustion engine with at least one combustion chamber having engine cylinder and at least one rotary valve for controlling the gas exchange of the engine cylinder, characterized in that each engine cylinder (3) has openings on two opposite sides of the combustion chamber (5, 6) are provided for the gas exchange, which are each covered by a rotary valve (1, 2), and that the both rotary valves are rigidly connected to one another. 2. Internal combustion engine according to claim 1, characterized in that the rotary valves are designed as rotary slide valves (1, 2) are. 3. Internal combustion engine according to claim 2, characterized in that the rigid connection (4) between the two rotary valves (1, 2) is designed as a bearing shaft (4) for the two rotary slides (1, 2). ■ ■ II