US2237591A

US2237591A - Rotary engine

Info

Publication number: US2237591A
Application number: US309644A
Authority: US
Inventors: Dumarest Michael
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-12-16
Filing date: 1939-12-16
Publication date: 1941-04-08
Anticipated expiration: 1958-04-08

Description

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AWM 19M, M. mu/mmm ROTARY ENGINE l 5 VShear-:hos-Shed 2 Inventar M'c/a/ez jwvmre L By ha and ied Dec l Patented Apr. 8, 1941 UNITED STATES para OFFICE 4 Claims.

This invention relates to rotary engines, and has for the primary object the provision of a device of this character which provides for fuel compression and storage and a power developing means along with a fuel transfer means for delivering the compressed fuel from the storage means to the firing chamber of the power developing means and includes in its construction a stator and eccentrically mounted rotors, one of which coacts with the stator in compressing the fuel and the other coacts with the stator in defining the explosive chamber and is acted on by the expanding gases from the exploded fuel for developing motive power.

With these and other objects in view, the invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For at complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a side elevation illustrating arotary engine constructed in accordance with my invention.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1 showing the stator and one of the rotors coacting therewith in defining the explosion chamber.

Figure 3 is a view similar to Figure 2 showing the rotor in a position of substantially exhausting the spent gases.

Figure 4 is a sectional view taken on the line 4--4 of Figure 1.

Figure 5 is a vertical sectional view showing the fuel storage chamber located between the fuel compressing means and the power developing means with the fuel transfer means associated therewith.

Figure 6 is a side elevation, partly in section, of the fuel transfer means.

Figure 7 is an end elevation illustrating the fuel transfer means.

Figure 8 is a perspective view illustrating one of the slidable supports employed for guiding the movement of one of the operating members of the fuel transfer mechanism. 'Figure 9 is a perspective View illustrating one of the operating members for the fuel transfer means.

Figure 10 is a detail sectional View illustrating the mounting for the fuel transfer means in the stator and one of the fuel passages or ports.

Referring in detail to the drawings, the numeral 5 indicates a stator of sectional formation wherein the sections are joined together by ltie bolts I5. The stator is supported by extensions 'I formed on end walls 8 thereof. The stator besides the end walls includes an annular wall 9 also offset portions I0 disposed uppermost on the stator. The offset portions Il) are formed by extending portions of the end walls and by walls forming an integral part of the annular wall of the stator.

Located in the stator are partitions Il which divide the stator into a compression chamber I2, a storage chamber I3 and a ring chamber I4. The end walls 8 rotatably support a shaft I5 1ocated concentrically of the stator and have secured thereto roto-rs I6 and I1. The rotor I6 is located within the compressor chamber I2 and the rotor I'I is located within the firing chamber Ill. The rotors are eccentrically mounted on the shaft I5 and are disposed oppositely to each other, as shown in Figure 4, for the purpose of providing balance to the shaft. The rotors I6 and Il have journaled thereon annular wear-receiving members I8 which ride the walls of the stator with a firm rolling contact therewith.

The stator has formed in the annular wall thereof a port I8 which communicates with the compressor chamber I2 and is for the purpose of permitting fuel to be introduced into the compressor chamber. The fuel is received from the carbureter or some other fuel supply means connected with the port I8. The stator is also provided with an exhaust port I9 which communicates with the ring chamber adjacent to where the extension Ill thereof forms onto the stator and is located substantially opposite to a spark plug opening in which a spark plug 22 is mounted and forms a part of an ignition system (not shown).

The partitions II of the stator have formed therein recesses 23 which form seats for disc-like members 25 forming part of the fuel transfer means or valve and the latter includes a pair of said disc-like members integrally connected and spaced from each other by a cylindrical portion 26. The disc-like members 25 have ports 2l therein which are adapted to move into and out of registration with ports 28 formed in the partitions. The disc-like members also are provided with sockets 28' to receive pivot pins 29 of operating members 30 employed for imparting rotation to the valve or fuel transfer means and each is in the form of a plate having a bearing head 3l at one end thereof and which is provided with an arcuately curved face 32 to ride the rotors.

It is to be understood that the operating members 30 ride the rotors I6 and l1 and are slidably supported by guide plates 33 which are slidably mounted in opposite walls of the extensions I of the stator. rPhe supporting plates being slidably mounted as specified permit the operating members 30 to follow the eccentric motion of the rotors vertically over the centers of said rotors. The supporting plates also close off a part of the extensions IU from the compressor chamber and the ring chamber to permit the rotors therein to compress the fuel and permit of ring of the fuel to act on one of the rotors. The guide plates 33 have beveled edges 34 which engage in correspondingly shaped grooves formed in the extensions of the end walls of the stator, asy clearly shown in Figure 5.

It will be Seen that as the rotors rotate within the stator the fuel transfer means consisting of the valve will be caused to rotate in timed relation with the rotation of the rotors due to the fact that the operating members 30 ride the peripheries of the rotors and are pivotally connected to the valve and are slidably supported both vertically and horizontally which permits said operating members to readily follow the eccentric motion of the rotors.

In operation, fuel is taken into the compression chamber and is compressed therein by the rotation of the eccentric rotor therein and the valve at timed intervals permits the compressed fuel to discharge into the storage or fuel chamber I3 and the valve at timed intervals permits this compressed fuel to discharge in predetermined amounts into the firing chamber where it is ignited by the spark plug 22 and acts upon the rotor within the firing chamber to develop the power'. An engine constructed in accordance with the showing made in the drawings and as described in detail will be extremely smooth in operation, economical in the consumption of fuel and easily lubricated. While the device as shown has been described as an engine for the development of power and for burning liquid fuel combined with air, it is to be understood that through minor alterations a device similarly constructed can be used a compressor, a pump or a rotary steam engine.

The exhaust port for the firing chamber is designated by the character I9 and is shown as formed in' the annular wall of the stator substantially opposite the fuel intake port !8 It is to be understood that the portion of the stator which provides the firing chamber may be constructed to have a plurality of firing charnbers therein by increasing the number of intake and exhaust ports, spark plugs, operating members 3d, guide plates 33 and offset portions I0 on the stator so that the rotor therein may receive a plurality of power impulses on each rotation thereof.

It is believed that the foregoing description, when taken in connection with the drawings will fully set forth the construction and advantages of this invention to those skilled in the art to which such device relates, so that further detailed description will not be required,

Having thus described the invention, what I claim is:

1. In a device of the character described, a stator having a compression chamber, a fuel storage chamber and a firing chamber, a shaft journaled in the stator and arranged concentrically thereof, rotors eccentrically mounted on and secured to said shaft and operating in the compressor chamber and the firing chamber, ignition means for the firing chamber, means for admitting fuel to the compressor chamber, a rotary type valve for the control of fuel from the compressor chamber to the storage chamber and from the latter to the ring chamber, means for operating the valve by the rotors, operating members pivotally connected to the valve and riding the peripheries of the rotors for the operation of the valve by said rotors.

2. In a device of the class described, a stator having a compression chamber, a fuel storage chamber and a firing chamber, a shaft journaled in the stator and arranged concentrically thereof, rotors eccentrically mounted on and secured to said shaft and operating in the compressor chamber and the firing chamber, ignition means for the firing chamber, means for admitting fuel to the compressor chamber, a rotary type valve for the control of fuel from the compressor chamber to the storage chamber' and from the latter to the firing chamber, and means for operating the valve by the rotors, operating members pivotally connected to the valve and riding the peripheries of the rotors for the operation of the valve by said rotors, and slidable means in the stator for slidably supporting said operating members.

3. In a device of the character described, a stator, partitions in said stator and forming a compression chamber, a fuel storage chamber and a ring chamber, ignition means for the firing chamber, a shaft journaled in the stator concentrically of said chambers, rotors eccentrically mounted on and secured to said shaft and located within the compression and firing chambers, means for admitting fuel to the compression chamber, said partitions having ports, a rotary valve journaled in said partitions and having ports to move into and out of registration with the ports of said partitions for the admittance of fuel from the compression chamber to the storage chamber and from the latter to the ring chamber, operating members pivotally connected to said valve and located within the compressor and ring chambers and having bearing portions riding the peripheries of the rotors, and means for slidably supporting the operating members in the stator.

4. In a device of the character described, a stator, partitions in said stator and forming a compression chamber, a fuel storage chamber and a firing chamber, ignition means for the firing chamber, a shaft journaled in the stator concentricaily of said chambers, rotors eccentrically mounted on and secured to said shaft and located within the compression and firing chambers, means for admitting fuel to the compression chamber, said partitions having ports, a rotary valve journaled in said partitions and having ports to move into and out of registration with the ports of said partitions for the admittance of fuel from the compression chamber to the storage chamber and from the latter to the ring chamber, operating members pivotally connected to said valve and located within the compression and firing chambers and having bearing portions riding the peripheries of the rotors, and guide plates slidably supported in the stator and slidably supporting the operating members.

MICHAEL DUMAREST.