DE2437201A1 - Axial piston IC engine - transfer chambers are isolated by sprung sealing rings - Google Patents

Abstract

The cylindrical combustion chambers are sealed on the outside by sealing rings. Transfer chambers are provided between the neighbouring sealing rings enclosed by outer and inner radial sealing parts. The inner ring consists of one single sealing ring which touches the individual combustion chamber rings. The outer sealing part is made up of single strips which push against the neighbouring combustion chamber rings. It is of general advantage when the rings are of radially self-sprung type with cut-away section at their circumference. In this way a sprung fitting is possible between the groove walls and the neighbouring seating rings. This arrangement also bridges possible manufacturing tolerances.

Description

2A37201

GOET ZEWEKKE Burscheid, d. July 31, 1974

Friedrich Goetze AG ZBT 329 / We / Mon. (1519)

Axial piston internal combustion engine

The invention relates to an axial piston internal combustion engine, consisting of from a cylinder block rotating about a longitudinal axis with several concentric to the longitudinal axis and to of these approximately parallel cylindrical combustion chambers, a stationary one covering the cylinder block at the front Cylinder head as well as in grooves of the cylinder block Sealing limits in the form of a sealing ring arranged concentrically to each combustion chamber and others on different ones Circumferential planes, each connecting two adjacent sealing rings with each other and between them in closed transition spaces closing sealing parts.

DT-OS 1 776 047 defines an axial piston internal combustion engine known with a multi-cylinder rotating cylinder block whose axis of rotation is parallel to the axes of the cylindrical, concentrically arranged combustion chambers runs. While on one end of the cylinder block the control

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organs for the pistons of the individual combustion chambers are located on the other end of the cylinder block Fixed cylinder head that covers the combustion chambers and has gas exchange channels. To the sealing system between the cylinder block and cylinder head are therefore subject to two conditions: On the one hand, the individual combustion chambers must be sealed on the other hand, there must be self-contained transitional spaces to be created between the individual combustion chambers a short-circuit-free supply of the combustion chambers via the gas exchange ducts to ensure.

It is already arranged in grooves in the face of the cylinder block Sealing system has been proposed which consists of individual sealing rings concentrically surrounding a combustion chamber as well as further ring segments running in different circumferential planes, the latter two adjacent Connect sealing rings to one another and thus create a self-contained transition space between each two sealing rings form, which is alternately connected to the two gas exchange ducts of the cylinder head when the cylinder block rotates will. The sealing parts are pressed on by springs supported on the bottom of the groove.

The invention is based on the object that the transition spaces to improve the sealing system that delimits radially inwards and outwards, in particular to design the shape of the sealing parts used in such a way that

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that a simple and economical mass production of the sealing parts is possible.

This object is achieved according to the invention in that the Transition spaces consist of sealing parts delimiting radially inwards and outwards from bodies of revolution and / or straight strips. Solid of revolution with a circumferential contour that is as circular as possible or straight strips with essentially flat outer surfaces can be produced more easily and more precisely than the segment-shaped sealing strips previously provided.

In the further embodiment of the invention it is proposed that the radially inner and / or outer boundary of the transition spaces each consists of a sealing ring with a correspondingly large diameter, the sealing ring with its outer or inner The circumferential surface touches the sealing rings of the individual combustion chambers.

It is for the function and performance of the internal combustion engine It is important that the volume of the transition spaces is kept as small as possible. Therefore it is further suggested that ever according to the position of the circumferential zone in which the inlet and outlet openings for the gas exchange, sealing rings with a relatively small diameter are provided between each two adjacent combustion chambers and with their outer circumference

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touch the surface of the sealing rings surrounding the combustion chambers.

It is generally advantageous if the sealing rings are designed to be radial Self-resilient rings, in which the sealing ring is cut open at one point on the circumference. In this way a Achieve resilient contact of the sealing rings both on the groove walls and on the adjacent sealing rings and at the same time manufacturing tolerances can be bridged.

In some cases it is also possible to use sealing washers instead of the annular ones To use sealing parts, especially if you can manage with smaller sealing part outer diameters.

Another possibility of forming a sealing system according to the Invention is that each has a combustion chamber concentrically enclosing sealing ring from a second Larger diameter sealing ring is surrounded, which is arranged eccentrically to the inner sealing ring that the outer sealing ring with one point of its inner circumference inner sealing ring touches and is cut open in the approximately opposite circumferential area in such a way that the two ring ends abut the outer peripheral surface of the adjacent outer sealing ring.

Embodiments of the invention are shown in the drawing

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represents. Show it

Fig. 1-4 simplified partial representations of ver

different sealing systems according to the invention, the remaining machine parts for a clearer representation of the sealing parts have been omitted.

On a circular line running concentrically around a longitudinal axis 1 2 lying, cylindrical combustion chambers 3 are of Sealing rings 4 sealed to the outside. Between each two adjacent sealing rings 4 transition spaces 5 are provided, by two on different circumferential surfaces 6, 7 or 7, 8 extending sealing parts are completed radially inwards and outwards. It is essential that both sides of a sealing ring adjoining transition rooms 5 are not connected to each other in order to ensure proper gas exchange control.

According to Fig. 1, the radially inner sealing parts consist of one single sealing ring 9 which touches the individual sealing rings 4. For the radially outer boundary of the transition spaces 5 are used individually straight sealing strips lo, each with two adjacent ends Push the sealing rings 4.

In Fig. 2, the transition spaces are radially further outward, so that

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the sealing rings 4 from the outside by a single sealing ring 11 are surrounded, which is also tangent to all sealing rings 4. For sealing the transition spaces serve radially inward between two sealing rings 4 arranged and touching these further sealing rings 12 with a correspondingly small diameter. Latter have a relatively wide joint 18 in which a rotation locking pin 19 protrudes. This prevents the sealing rings 12 from migrating avoided. About the open joint 18 gas can from the transition space 5 in the interior 2o for expansion and thus for improvement the sealing effect of the sealing ring 12 arrive.

In the embodiment of Fig, 3 are instead of the sealing rings 12 from Fig. 2 is now provided sealing washers 13, while the radially outer boundary of the transition spaces 5 straight sealing strips 14, which in turn are tangent to the sealing rings 4.

In the embodiment according to FIG. 4, the boundary of the transition spaces 5 consists of the inner sealing ring 4 as well a larger-diameter sealing ring 15 surrounding it, which is arranged eccentrically to the sealing ring 4, that it touches the sealing ring 4 with its inner circumferential surface at the point 16 and that of the contact point approximately opposite circumference is cut so that the two ring ends 17, 18 abut the adjacent sealing ring 15.

The cross-sections of all sealing parts shown in Figs. 1-4

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are predominantly rectangular. All sealing rings are designed as radial self-resilient rings by attaching them to a circumference s surfaces are cut open.

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Claims (6)

GOETZEWERKE Burscheid, d. July 31, 1974 Friedrich Goetze AG ZBT 329 / We / Mon. (1519) PATENT CLAIMS Axial piston internal combustion engine, consisting of a cylinder block rotating about a longitudinal axis with several concentric cylinders cylindrical combustion chambers arranged to the longitudinal axis and running approximately parallel to it, a stationary cylinder head covering the end face of the cylinder block and provided in grooves in the cylinder block Sealing boundaries in the form of a sealing ring arranged concentrically to each combustion chamber and further, running on different circumferential planes, each connecting two adjacent sealing rings with one another and between these self-contained transitional spaces sealing parts, characterized in that that the sealing parts consist of bodies of revolution (4,9, 11, 12, 13, 15) and / or straight sealing strips (lo, 14). 2.) Axial piston internal combustion engine according to claim 1, 509887/0236 ^{2 /} '" Page it - claims to "axial piston internal combustion engine" (1519) characterized in that the radially inner and / or outer boundary of the transition spaces (5) from each a sealing ring (91 11), which all the combustion chambers (3) is tangent to the surrounding sealing rings (4). 3.) Axial piston internal combustion engine according to the claims 1 and 2, characterized in that between each two adjacent Sealing rings (4) smaller-diameter sealing rings (12) are provided, both of which seal ■ touch the retaining rings (4). 4.) Axial piston internal combustion engine according to the claims 1 to 3, characterized in that the sealing rings (4, 9, 11, 12) are slotted and thus designed to be radially resilient. 5.) Axial piston internal combustion engine according to the claims 1 and 2, characterized in that between each two adjacent Sealing rings (4) smaller diameter sealing washers (13) are provided that touch both sealing rings (4). 6.) Axial piston - internal combustion engine according to claim 1, € 09887/0236 - - , Page If - Claims to "Axial piston internal combustion engine" (1519) characterized in that each has a combustion chamber (3) surrounding sealing ring (4) is surrounded by a second larger-diameter sealing ring (15) which as far as eccentric to the inner sealing ring (4) is arranged that the outer sealing ring (15) with a circumferential point the inner sealing ring (4) touches, and in approximately the opposite circumference sbe rich in such a way is cut open that the two ring ends on the butt the outer peripheral surface of the adjacent outer sealing ring (15). Blank page