JP2007518916A - Rotating alternating reciprocating internal combustion engine - Google Patents

Abstract

In a rotary alternating reciprocating internal combustion engine provided with a fixed outer portion defined as a stator (1), an intake port (14) and an exhaust port (15) are formed in the fixed outer portion, and inside the stator, A rotating body known as the rotor (2) is installed, which rotates coaxially with the axis of the stator, in which a chamber (19) for inserting a cylinder (20) is formed. In the cylinder, the piston (21) connected to the device (30) slides, and the device (30) is constrained to operate in an eccentric manner with respect to the rotational axis of the rotor, thereby allowing the present invention to The engine combustion chamber volume is varied.
[Selection] Figure 1

Description

  The present invention relates to a rotating alternating reciprocating internal combustion engine.

Numerous patents have been filed and numerous designs have been made with the intent of constructing engines having better structural and functional characteristics than alternating reciprocating engines.
Toroidal cylinder engines whose pistons that track each other move together and away from each other during circular motion, engines with blades on the rotor, engines with vibrating discs or blades, and finally So-called rotary piston engines (which are rotors with lobes) have been researched and developed.

  These engines, commonly referred to as rotary piston engines or rotary gear engines or lobe engines, are positive displacement engines without a crank mechanism and with an operating cycle similar to that of an alternating reciprocating engine.

  Engines that have been devised in the past seem promising in theory, and at least in the paper, seemed cost-effective to build over alternating reciprocating engines, but especially with poor gas sealing and Failure due to unreasonable shape of combustion chamber.

  As an example, the amphibiy engine of the 1920s pioneered the more well-known NSU-Wankel rotary engine of the type with a rotating piston, the only one applied in a different field similar to the automotive industry The model is quoted.

The object of the present invention is to make an internal combustion engine that does not have any of the structural or functional disadvantages suffered by similar known engines.
In particular, the object of the invention is to make an internal combustion engine that makes it possible to obtain the following advantages:
Substantially reduce the unbalanced shape and thus achieve a natural or easier balance.
-Reduce the number of moving parts and thus achieve a simple configuration;
-Reduce the total volume and hence the weight.
Achieve a substantial gas tight seal in all areas of the cycle between the rotor and the casing;
-Achieve regular operation at all operating speeds;
-Achieve excellent volume and mechanical yield.
-Achieve a reduction in the consumption ratio.

  The objects as described above are achieved by making an internal combustion engine that interacts with the structural and functional characteristics of a conventional reciprocating internal combustion engine with the structural and functional characteristics of a rotary engine.

  The engine according to the present invention includes a fixed end portion that constitutes a casing, which will be described later using the term “stator”, and the stator is formed with a recess for use of a spark plug and intake and exhaust ports. The stator is provided with a rotating body that rotates coaxially with the axis of the casing itself.

  In the inner rotating body, which will be described later under the generic term “rotor”, several through-chambers are formed, arranged in a radial direction and spaced equidistantly on the periphery concentric with the axis of rotation of the rotor.

Within each chamber, an alternating piston can slide such that the chamber is a cylinder of an engine according to the present invention.
The sliding of the piston in the cylinder is made possible by the fact that the piston is equipped with a device that is constrained to operate about an axis arranged eccentrically with respect to the rotor axis of rotation. Yes.

  According to the structural solution as described above when the rotor rotates about its axis, it is constrained to a shaft arranged eccentrically with respect to said shaft and a corresponding formed on the rotor itself. A piston engaged for sliding in a cylinder is forced to move in a reciprocating linear motion, which results in the chamber volume defined between the piston head and the inner surface of the stator. Continuously and periodically, i.e. changing the volume of the combustion chamber of the engine according to the invention.

  The value of the eccentricity between the rotating shaft of the rotor and the constraining shaft of the piston and the configuration of the spark plug, suction port and discharge port are the four steps of the Otto cycle for each complete 360 ° rotation of rotation. Is generated on each piston, and is thereby defined to perform the same operations as in a normal four-stroke internal combustion engine process, i.e., suction, compression, power and exhaust processes.

  The device for constraining each piston to the eccentric shaft can be made differently and can be subdivided substantially into two embodiments. That is, in the first embodiment, it is assumed that the device is engaged to follow the profile of the circular cam, whereas in the second embodiment, the device fits idle on the pin. Composed of mated tie rods, both cams and pins are coaxial with the engine eccentric shaft.

  The invention is better defined using the description of several possible embodiments of the invention, given with the aid of the accompanying table of drawings, but not limited to the examples.

  As can be understood from the drawings, the engine according to the present invention includes a fixed outer body constituting the stator 1. In the stator, a movable body, that is, a rotor 2 that is fixed to a stator body through a key 5 and fitted to a central support pin 4 integrally formed with the stator body via a bearing 3 rotates coaxially.

  As can be understood from FIGS. 11 and 12 in particular, the stator 1 is formed of a casing that is divided into a base 6 and a cover 7 in an axial center plane. The base 6 and the cover 7 are held together in a locked state through the flange connection portion 8.

  The complete ring 9 is inserted into the stator 1. At this time, the complete ring 9 having an inner surface 10 with a spherical profile is in sliding contact with the outer surface 11 of the spherical profile of the rotor.

A seat 12 for housing the spark plug 13 and the ports 14, 15, for the fumes exhaust and for sucking the mixture, is formed in the stator 1.
As can be seen in particular from FIGS. 13 and 14, the body 16 of the rotor 2 is divided into two symmetrical blocks 17 in a central plane perpendicular to the longitudinal axis. These two blocks are connected and held together by screws 18.

Concave portions 19 extending in the radial direction and spaced apart at equal intervals are formed in the body 16. These recesses 19 constitute a seat of the cylinder 20 on which the piston 21 slides.
Each cylinder 20 includes a liner 22 and a collar 23 provided with an O-ring 24. The collar 23 is formed in a spherical shape so as to slide with respect to the inner surface 10 of the fixing ring 9, and thus functions as a cap for the variable volume combustion chamber 25.

  In a region not occupied by the collar 23, in a flat portion 28 provided on the body 16 of the rotor 2, in a region not occupied by the collar 23, in order to seal between the relatively moving surfaces such as the inner surface 10 of the stator and the outer surface 11 of the rotor, It is conceivable to use a forming sliding block 26 applied by means of screws 27.

  Advantageously, with the rotation of the rotor 2, the sliding block 26 also performs the function of opening and closing the suction port 14 and the discharge port 15, thus making the use of the valve meaningless and functioning like a two-stroke internal combustion engine. A four-stroke internal combustion engine is configured.

  As can be understood from FIGS. 1 and 2, in the engine according to the first embodiment of the present invention, the piston 21 is moved through the operation of the device indicated as a whole by 30. The device comprises two pairs of rollers connected together by a double T block 31. The first pair 32 is mounted on the bushing of the piston 21 and can slide on the outer surface of the fixed cam 33, while the second pair 34 moves on the inner surface of the cam. Can slide.

  As can be understood from FIGS. 2 and 3, the fixed cam 33 has a circular profile in which the Y axis is eccentric with respect to the X axis of the central support pin 4. The fixed cam 33 constitutes a single body together with the central support pin.

Specifically, the central pin / bracket group is divided into two contrasting blocks 35 to allow rotation of the bracket 31. These two blocks are held connected together through pins 36.
As can be seen from FIGS. 5 and 6, a possible variant embodiment of the device 30 assumes the use of an upper pair of bearings 32. The upper pair of the bearings 32 is maintained in contact with the outer surface of the cam 33 by the pressing action of the spring 38 inserted into the body 16 of the rotor 2.

  As can be understood from FIGS. 7 and 8, in the engine according to the second embodiment of the present invention, the piston 21 is moved through the action of the device indicated as a whole by 40. Each piston 21 is provided with a tie rod 41. The branch end portion 42 of the tie rod is fitted on a single fixing pin 43 so as to be idle. The fixed pin 43 is arranged with a Y axis that is eccentric with respect to the X axis of the fixed central pin 4 and is connected to the fixed central pin 4 via a bracket 44.

FIG. 1 (Table I) is a cross-sectional front view of an engine according to one embodiment of the present invention of the type equipped with a guide cam. FIG. 2 (Table I) is a cross-sectional side view of an engine according to an embodiment of the present invention of a type equipped with a guide cam. FIG. 3 (Table II) shows an assembly mode of the rotor and the central support pin according to FIG. FIG. 4 (Table II) shows an assembly mode of the rotor and the central support pin according to FIG. FIG. 5 (Table III) is a front view of an engine according to a second embodiment of the present invention of a type equipped with a guide cam. FIG. 6 (Table III) is a side view of an engine according to a second embodiment of the present invention of a type equipped with a guide cam. FIG. 7 (Table IV) is a cross-sectional front view of an engine according to one embodiment of the present invention of the type equipped with a tie rod. FIG. 8 (Table IV) is a cross-sectional side view of an engine according to one embodiment of the present invention of the type equipped with a tie rod. FIG. 9 (Table V) is a cross-sectional front view of the rotating group attached to the engine according to FIG. FIG. 10 (Table V) is a cross-sectional side view of the rotating group attached to the engine according to FIG. FIG. 11 (Table VI) is a cross-sectional front view of the stator group attached to the engine according to FIG. FIG. 12 (Table VI) is a cross-sectional side view of the stator group attached to the engine according to FIG. FIG. 13 (Table VII) is a perspective view of the disassembled rotor body. FIG. 14 (Table VII) is a perspective view of the rotor body assembled together.

Claims (9)

A rotary alternating reciprocating internal combustion engine, wherein the internal combustion engine is formed with a recess (12), a suction port (14) and a discharge port (15) for applying the spark plug (13). A casing, that is, a type having a fixed outer portion constituting the stator (1),
Inside the stator, a rotating body (2) is provided, the rotating body rotates coaxially with the axis of the casing itself, and a plurality of through chambers (19) are formed on the rotating body or rotor. The plurality of through-chambers are arranged so as to extend in the radial direction and are arranged at equal intervals in a peripheral portion concentric with the rotating shaft of the rotor, and the piston (21) slides in an alternating motion in each chamber. And the sliding movement of the piston in the cylinder causes the piston to operate about an axis (Y) arranged eccentric with respect to the rotation axis (X) of the rotor itself. Made possible by the fact that a restrained device is provided,
The internal combustion engine
The stator (1) is formed from a casing divided into a base (6) and a cover (7), and the base (6) and the cover (7) have a flanged connection (8) in the axial center plane. And is held in a locked state together,
A complete ring (9) is inserted into the stator, the complete ring having its inner surface with a spherical profile in sliding contact with the outer surface (11) with the spherical profile of the rotor (2) ( And 10) a rotary alternating reciprocating internal combustion engine.   The body (16) of the rotor (2) is divided into two symmetrical blocks (17) in a central plane perpendicular to the longitudinal axis, the two symmetrical blocks (17) being screwed (18). The engine according to claim 1, wherein the engine is held connected together.   Equally spaced radial recesses (19) forming seats of the cylinder (20) where the piston (21) slides are formed on the body (16), The cylinder is composed of the liner (22) and the collar (23), which is equipped with an O-ring (24) and slides against the inner surface (10) of the fixing ring (9). 3. Engine according to claim 2, characterized in that it is formed in a spherical shape and thus the collar functions as a cap for the variable volume combustion chamber (25).   The seal between the relatively moving surface, i.e. the inner surface (10) of the stator and the outer surface (11) of the rotor, is in the region not occupied by the collar (23) in the rotor (2 ) Is secured by a molded sliding block (26) applied via the screw (27) on the flat part (28) given to the body (16), the sliding block being The engine according to any one of the preceding claims, further executing a function of opening and closing the suction port (14) and the discharge port (15).   The piston (21) is moved by the action of a device (30) comprising two pairs of rollers connected together via a double T bracket (31), the first pair of the two pairs of rollers. (32) is fitted to the bushing of the piston and can slide on the outer surface of the fixed cam (33) and the second pair (34) slides on the inner surface of the cam. An engine according to any one of the preceding claims, characterized in that   The fixed cam (33) has a circular profile with an axis (Y) arranged eccentric with respect to the axis (X) of the central support pin (4), the fixed cam together with the central support pin being a single The body according to claim 6, characterized in that it constitutes a body, the body is divided into two symmetrical blocks (35), the two symmetrical blocks being held together via pins (36). The listed engine.   The piston is moved through the action of a device (30) that uses a single upper pair of bearings (32), the upper pair of bearings being inserted into the body (16) of the rotor (2). Engine according to any one of the preceding claims, characterized in that it is maintained in contact with the outer surface of the cam (33) by a pressing action of a spring (38).   The piston (21) is moved through the action of the device (40), and the piston is provided with a tie rod (41), respectively, and the branch end (42) of the tie rod has a single fixing pin ( 43) is fitted on the fixing pin (43) so as to be idled, and the fixing pin (43) is arranged with an axis (Y) eccentric with respect to the axis (X) of the fixing central pin (4), and the bracket (44). The engine according to any one of the preceding claims, characterized in that it is connected to the fixed central pin (4) via).   The rotor (2) rotating coaxially inside the stator (1) is fitted via the bearing (3) on the central support pin (4), and the central support pin is the key The engine according to any one of the preceding claims, wherein the engine is fixed to the body of the stator itself via (5) and integrally formed with the body.

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