JPH0431629A - Rotary engine - Google Patents

Abstract

PURPOSE:To simplify manufacture and to reduce cost by making the inside face of a rotary housing cylindrical, providing two pieces of rotors with their side faces in a roughly rectangular shape coaxially inside this housing and devising each point of each rotor to make circular motion. CONSTITUTION:A cylindrical actuation chamber 3 is provided in a rotor housing 1, two pieces of rotors 7, 8 with side faces in a roughly rectangular shape which respectively make closely contact with a peripheral wall surface 4, an upper surface 5 and a bottom face 6 are coaxially arranged in the actuation chamber 3 in the state where they are reciprocally crossed with each other and the actuation chamber 3 is divided into four sections. Additionally, rotary elements 16, 17 corresponded to the rotors 7, 8 so that they rotate at twice as the angle speed as that of both of the rotors 7, 8 are coaxially supported free to rotate respectively in the rotor housing 1. Additionally, an ignition plug 26, an exhaust port 25 and a suction port 24 are provided in the rotor housing 1 so that each chamber of the actuation chamber 3 divided into four carries out the phases of explosion, expansion, exhaustion and compression while the rotors 7, 8 rotate one turn.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to rotary engines such as automobiles. A.

[Conventional technology]

In order to avoid various obstacles caused by the inertia of reciprocating parts such as the piston of a piston engine, a Wankel rotary engine that directly converts gas pressure into rotational force has already been developed and has been put into practical use as an automobile engine. .

[Problem to be solved by the invention]

However, in the conventional Wankel rotary engine, the inner surface of the rotor housing must be formed into a trochoidal curved surface, and the rotor must be formed into an "omspi shape" with a special curved surface, which is not easy to manufacture and is expensive. There are problems such as becoming.

The present invention has been made in an attempt to solve such problems.

[Means to solve the problem]

In order to solve the above problems, the present invention has a rotor housing having a cylindrical inner surface, two rotors having substantially rectangular sides disposed coaxially within the housing, and each point of each rotor exhibiting circular motion. The purpose of the present invention is to provide a rotary engine that can be used as a rotary engine.

That is, in the rotary engine of the present invention, the rotor housing 1 is provided with a cylindrical working chamber 3, and within the working chamber 3 there are two holes that are in close contact with the peripheral wall surface 4, the upper surface 5, and the lower surface 6 of the working chamber 3, respectively. Rotors 7.8 having substantially rectangular side surfaces are disposed coaxially so that they can rotate independently about the center line 9 of the working chamber 3 in a state where they intersect with each other. The working chamber 3 is divided into four parts, and the rotor 16 associated with one rotor 7 rotates at twice the angular velocity of the other rotor 8. The rotor 17 associated with the rotor 8 is rotatably coaxially supported by the rotor housing 1, and the torque transmitted from the rotor 7.8 to the rotor 16.17 is outputted via a cam device. The cam device causes the rotor 7.8 to rotate in the same direction, and when the angular velocity of rotation of the output shaft 28 is constant, the rotor 7.8 has an angular velocity of 2 degrees during each rotation. It has a maximum value and a minimum value of 2 degrees of angular velocity, and when the angular velocity of one rotor 7 is maximum, the angular velocity of the other rotor 8 is minimum, and when the angular velocity of one rotor 7 is minimum, the other rotor rotor 7.8 so that the angular velocity of rotor 7.8 is maximum.
Further, the rotor housing 1 is provided with a spark plug 26, an exhaust hole 25, and an intake hole 24, and the rotor 7.8 divides the operation into four parts during one rotation of the rotor 7.8. This is characterized in that each of the chambers 3 carries out explosion, expansion, exhaust, and compression strokes.

As a means for rotating one rotor 16 at twice the angular speed of one rotor 7 and rotating the other rotor 17 at twice the angular speed of the other rotor 8, the shaft of one rotor 7 is 10 is inserted into the hollow shaft 11 of the other rotor 8 so as to be mutually rotatable, and the hollow shaft 11 of the other rotor 8 has its upper end 11' projected upwardly from the rotor housing 1,
The upper end 10'' of the shaft 10 of the rotor 7 on the - side projects further upward than the upper end 11' of one of the hollow shafts, and the upper end 10- of the shaft 10 of one rotor 7 and the hollow shaft 1 of the other rotor 8
Gears 14.15 having the same pitch radius a are attached to the upper end 11- of the rotor 7.8 so as not to rotate, and each rotor 16.17 has a pitch radius of 1/2a. Each rotor 16 consists of a pinion gear 20.21 and an arm 22.23 that rotates integrally with each pinion gear 20.21, and each rotor 16
．． 17 is preferably mounted on a common axis 18 parallel to the centerline 9 of the working chamber 3.

The cam device includes elongated holes 36.37 in the arms 22.23 of each rotor 16.17 in the longitudinal direction.
The arms 22 and 23 are respectively provided on one side of the common shaft 18 and extend in a direction perpendicular to the common shaft 18, while each arm 22 and 23 is provided on the crank 27 whose crankshaft is the output shaft 28. Two crank pins 31a and 31b corresponding to the elongated holes 36.37 are protruded at symmetrical positions with respect to the center line 29 of the output shaft 28, and the output shaft 28 of the crank 27 is connected to the rotor 16.17. Is the distance C parallel to the common shaft 18 and between the center line 29 of the output shaft 28 and the center line 32 of the common shaft 18 Q<c<b (b is the center line 29 of the output shaft 28 and the crank pin 31a, 31b), and each crank pin 31a,
31b to each arm 22.23 slot 36.37
The arms 22', 23' of each rotor 16, 17 have a center line 3 of the common shaft 18, although the arms 22', 23' of each rotor
Pins 38a, 38 of the same diameter are placed at positions equidistant from 2.
b is provided protrudingly, and each of the arms 22-123- is provided on one side of the common shaft 18 and extends in a direction perpendicular to the common shaft 18;
A block 39 is provided at the end of the output shaft 28 on the arm side.
is fixed, and a groove 40 passing through the center line 29 of the crankshaft 28 is bored in the arm side surface of the block 39 in correspondence with the pins 38a and 38b of the arms 22 and 23', and the output shaft 28 is rotated. The distance f between the center line 29 of the output shaft 28 and the center line 32 of the common shaft 18 parallel to the common axis 18 of the child 16.17 is O<f<e (e is the center line 3 of the common shaft 18).
2 and the center line of each pin 38a, 38b), and each pin 38a, 38b is preferably slidably fitted into a groove 40 of block 39.

〔Example〕

Reference numeral 1 is a rotor housing forming a cylindrical working chamber 3, and 1' is a bottom portion forming a part of the rotor housing 1. In the working chamber 3, two rotors 7.8 having substantially rectangular sides are placed in close contact with the peripheral wall surface 4, the upper surface 5, and the lower surface 6 of the working chamber 3, respectively, and the rotors 7.8 are located at the center of the working chamber 3 in a state where they intersect with each other. The rotors 7 and 8 are arranged coaxially so that each rotor can rotate freely about the line 9 as the center of rotation, and the working chamber 3 is divided into four by these rotors 7 and 8. That is, for example, the rotors 7.8 are formed with corresponding notches 7-18 in the center, and with these notches 7-18 meshed with each other, one of the rotors 7. The shaft 10 is inserted into the hollow shaft 11 of the other rotor 8 so as to be mutually rotatable. 12.13 are shafts 10.11 provided on the upper surface 5 and lower surface 6 of the working chamber 3, respectively.
This is a bearing.

A rotor 16 associated with one rotor 7 to rotate at twice the angular velocity of the other rotor 7, and a rotor 17 associated with the other rotor 8 so as to rotate at twice the angular velocity of the other rotor 8. are rotatably and coaxially supported by the rotor housing 1, respectively.

In this manner, as an example of a means for rotating one rotor 16 at twice the angular velocity of one rotor 7 and rotating the other rotor 17 at twice the angular velocity of the other rotor 8, An example of this will be explained.

The hollow shaft 11 of the other rotor 8 has its upper end 11- projected upwardly from the rotor housing 1, and the shaft 10 of the one rotor 7 has its upper end 10- connected to the upper end 11 of the hollow shaft 11.
' (see Figure 2). rotor 7
The upper end 10' of the shaft 10 of the rotor 8 and the upper end 11- of the hollow shaft 11 of the other rotor 8 have the same pitch circle radius a.
4.15 are each non-rotatably mounted to the rotor 7.8. Further, each rotor 16.17 is composed of a pinion gear 20.21 having a pitch circle radius of 1/2a and an am 22.23 that rotates integrally with each pinion gear 20.21, and each pinion gear 20.2'). Each rotor 16.1 is in mesh with each gear 14.15.
7 is mounted on a common shaft 18 parallel to the center 119 of the working chamber 3. Reference numeral 19 denotes a bearing hole for the common shaft 18 provided in the rotor housing 1, and the center of the bearing hole 19 is located at a distance of 3/2a from the center line 9 of the working chamber 3.

The torque transmitted from the rotor 7.8 to the rotor 16.17 is transmitted to the output shaft 28 via a cam arrangement. The cam device rotates the rotor 7.8 in the same direction, and when the angular velocity of the rotation of the output shaft 2B is constant, the rotor 7.8 has a maximum value of 2 degrees of angular velocity and a maximum value of 2 degrees of angular velocity during one rotation. When the angular velocity of one rotor 7 is maximum, the angular velocity of the other rotor 8 is minimum, and -
When the angular velocity of one rotor 7 is minimal, the other rotor 8
The rotation of the rotor 7.8 is regulated so that the angular velocity of the rotor 7.8 becomes maximum.

Next, a specific example of the above cam device will be explained.

*Cam device according to claim 3 (Figs. 1 to 9) each rotor 16
．． The arms 22, 23 in 17 are each provided with an elongated hole 36, 37 in the longitudinal direction, and the arms 22, 23 are each extended on one side of the common shaft 18 in a direction perpendicular to the common shaft 18; The crank 27 having the output shaft 28 as its crankshaft has two crank pins 31a and 31b corresponding to the elongated holes 36.37 of each arm 22.23 projected at symmetrical positions with respect to the center line 29 of the output shaft 28. , the crank 27 has its output shaft 28 parallel to the common axis of the rotors 16, 17, and the distance C force VO between the center line 29 of the output shaft 28 and the center line 32 of the common shaft 18 <c<b (b is the output shaft 28
The crank bins 31a and 31b are supported rotatably so that the distance between the center line 29 of the crank bin 31a and the center line of the crank bin 31a131b becomes
Slide into the long holes 36 and 37. 33 is a crank bearing fixed to the rotor housing 1, and 34 is a crank bearing hole.

*Cam device according to claim 4 (FIGS. 10-11) Arms 22-23' of each rotor 16, 17 have a common shaft 18.
pins 3 of the same diameter at positions equidistant from the center line 32 of
8a, 38b are provided in a protruding manner, and the arms 22-123- are respectively provided on one side of the common shaft 18 and extend in a direction perpendicular to the common shaft 18. On the other hand, for example, a cylindrical block 39 is fixed to the arm side end of the output shaft 28 with the center line of the block 39 and the center line 29 of the output shaft 28 aligned, and the arm of the block 39 is fixed. A groove 40 passing through the center line of the block 39 is formed on the side surface of the arm 22-123.
' are bored corresponding to the pins 38a and 38b.

The output shaft 28 is parallel to the common axis 18 of the rotor 16.17 and parallel to the center line 29 of the output shaft 28 and the center line 32 of the common axis 18.
Each pin 38a is rotatably supported so that the distance f between them satisfies Q<f<e (e is the distance between the center line 32 of the common shaft 18 and the center line of each pin 38a, 38b). , 38b
into the groove 40 of the block 39. Note that the output shaft 28
may be supported by a bearing similar to the crank bearing 33.

The rotor housing 1 is equipped with a spark plug 26, an exhaust hole 25, and an intake hole 24, and during one rotation of the rotor 7.8, the working chamber 3 divided into four parts by the rotor 7.8 explodes, expands, exhausts, etc. k to perform a compression process.

In FIG. 6, the center of operation v3 Ii! 9, ailgl passing through the center 1i132 of the common axis 78 in a direction perpendicular to this
, and use this straight line as the reference line 35. When an angle is referred to herein, it refers to the center w of the working chamber 3 in FIG. 9 or the center 1632 of the common axis 18 and the angle counterclockwise from the reference 1635.

- For example, the side surface of the rotor housing 1 has a spark plug 26 at a 90° position and an exhaust hole 25 at an approximately 235° position.
An intake hole 24 is provided at a position of approximately 305°.

When assembling the rotary engine of the present invention, the sixth
As shown in the figure, (1) the rotor 7 is perpendicular to the reference line 35, and (2)
(3) the arm 22 makes an angle of 90' with respect to the reference line 35; and (4) the arm 23 makes an angle of 270° with respect to the reference line 35. In this state, gears 14 and 15 are engaged with pinion gears 20 and 21, respectively. The center of the crank bearing hole 34 in the crank bearing 33 is bored at a distance C from the center line 32 of the common shaft 18 in the direction of 90'', as shown in FIG. Must.

[Action and process]

Next, the operation and stroke of the rotary engine according to the present invention will be explained with reference to FIG. 7 and the like. Figure 7 (1) - (
The upper circle in 16) is the crank bin 31a, 31b.
The lower circle represents the peripheral wall surface 4 of the working chamber 3. 7a is one end of the rotor 7, 8a is the rotor 8
One end, P, Q, R, and S are each chamber of the working chamber 3 divided into four by the rotor 7.8. It is assumed that the rotor 7.8 of this rotary engine rotates counterclockwise, and the output shaft 28 rotates clockwise at a constant speed. Figure 6, 7th
direction of rotation in the figure). Further, it is assumed that the angle of the rotor 7.8 and the angle of the arm 22.23 in FIG. 7(1) are set as described above.

In Fig. 7 (1) and Fig. 8, the maximum S in the working chamber 3 is
The gas in W# is expanding immediately after ignition. rotor 7
．． The pressure of the gas in the chamber S is applied to the rotor 8 as shown by the arrow in FIG. 8, and the torque due only to the gas pressure tends to rotate the rotor 7 clockwise and the rotor 8 counterclockwise.

This rotation is doubled in speed to cause each rotor 16, 17 to rotate in opposite directions. is reversed, and attempts to rotate arm 22 counterclockwise and arm 23 clockwise. In this case, the counterclockwise torque (
If the magnitude of the moment of force is G, then the magnitude of the clockwise torque transmitted to the arm 23 is also G. 9th
In the figure, a crank pin 31 located at the top of the crank 27 receives a force, and a crank pin 31 located at the bottom of the crank 27 receives a force directed to the left. Since FB>FA, the crank 27 receives clockwise torque, and this torque becomes FBb-FAb=(FB-FA)b.

This torque becomes the torque that rotates all moving parts. Therefore, the output shaft 28 rotates clockwise and the rotor 7.
8 rotates counterclockwise.

Furthermore, each process shown in FIGS. 7(1) to (16) will be explained.

(1) The state of the room S is as described above. The angular velocity of the rotor 7 is minimal (minimum), and the angular velocity of rotor 8 is maximal (maximum).

(2) The output shaft 2B is rotated 45 degrees clockwise from (1). When moving from (1) to (2), arm 22
Since the rotation angle of the arm 23 is larger than that of the rotor 7, and therefore the rotation angle of the rotor 8 is larger than that of the rotor 7, the volumes of the chambers S and Q become large, and the gas in the chamber S becomes 1
Gas is drawn into the expansion chamber Q, while the volumes of the chambers P and R are reduced, the gas in the chamber P is compressed, and the gas in the chamber R is exhausted.

(3) The output shaft 28 is further rotated by 45° clockwise from (2). The angular velocity of rotor 7 and the angular velocity of rotor 8 are equal. The volumes of chambers S and Q become maximum, gas in chamber S begins to be exhausted, and inhalation of vQ ends. The volumes of chambers P and H become extremely small, the gas in chamber P is ignited, and exhaustion in chamber R ends. At this time, the torque generated on the output shaft 2B is O.

(4) The output shaft 28 is further rotated by 45 degrees clockwise from (3). When moving from (3) to (4), the rotation angle of the arm 22 is larger than the rotation angle of the arm 23, and therefore the rotation angle of the rotor 7 is larger than the rotation angle of the rotor 8, so the volumes of the chambers S and Q are The gas in the chamber Q becomes smaller, the gas in the chamber Q is exhausted, and the gas in the chamber Q is compressed.Meanwhile, the volumes of iP and R become larger, the gas in the chamber P expands, and the gas in the chamber Q is sucked into the chamber Q.

(5) The output shaft 28 is further rotated by 45° clockwise from (4). At this time, the angular velocity of the rotor 7 is maximum, the angular velocity of the rotor 8 is minimum, and the same torque as in (1) is generated.

When moving from (4) to (5), the rotation angle of the arm 22 is larger than the rotation angle of the arm 23, the volumes of the chambers S and Q become smaller, the gas in the chamber Q is exhausted, and the gas in the chamber Q is compressed. On the other hand, the volumes of P and R become larger, the gas of P expands by one volume, and gas is sucked into chamber R.

The same thing happens repeatedly, and the state returns to the same state as (1) at (16).

From (1) to (16) above, the rotors 7.8 rotate, and the output shaft 2B rotates twice.

Also, explosions occur four times at equal intervals.

〔Effect of the invention〕

The rotary engine according to the present invention exhibits excellent effects not found in conventional Wankel rotary engines in the following points.

(1) Since the working chamber is cylindrical and its inner surface has a circular planar shape, manufacturing is easy and costs can be reduced.

(2) Since each rotor has a substantially rectangular side surface and does not require a specific planar shape, it is easy to manufacture and costs can be reduced.

(3) The compression ratio can be changed by changing the distance between the rotor's leading shaft and the output shaft.

In particular, in the rotary engine according to the fourth aspect, the compression ratio can be easily set by changing the distance between the shafts.

(4) Since the rotor rotates and the rotor center of gravity does not move at all, vibrations during engine rotation are extremely small.

(5) Since the overall thickness of the engine is small relative to the volume of the working chamber, it is possible to achieve high output with a small size.

[Brief explanation of drawings]

Figures 1 to 9 show one embodiment of the present invention, and Figures 10 and 11 show another embodiment of the present invention, where Figure 1 is an exploded perspective view of a rotary engine, and Figure 2 is an exploded perspective view of a rotary engine. FIG. 3 is a perspective view of the fully assembled engine; FIG. 4 is a front view of the engine; FIG. 5 is a plan view of the engine; FIG. is a plan perspective view of the same engine as above, Figure 7 is an explanatory diagram of the stroke, and Figure 8 is a perspective view of the same engine.
9 is an explanatory diagram showing the pressure applied to the rotor, FIG. 9 is an explanatory diagram of the operating principle of the engine, FIG. 10 is an exploded perspective view of the cam device, and FIG. 11 is a plan view of the cam device. 1...Rotor housing]-...Bottom part 3...
Working chamber 4...Surrounding wall surface 5...Top surface
6...Bottom surface 7.8...Rotor 7-1
8-... Notch part 9... Center II 10
...Shaft 10-...Top end 11...Hollow shaft 11'...Top end 12.13...Bearing 1
4.15...Gear 16.17...Rotor 18
...Common shaft 19...Bearing hole 20.21.
...Nion gear 22.23 (22=, 23')...Arm 24...
・Intake hole 25...Exhaust hole 26...Spark plug 27...Crank 28...Output shaft
29... Center line 31a, 31b... Crank pin 32... Center line 33... Crank bearing 3
4...Crank bearing hole 35...Reference line 36.37
---Long hole 38a, 38 b---Pin 39...
・Block 40...Groove

Claims (1)

[Claims] 1. The rotor housing (1) has a cylindrical working chamber (3).
In the working chamber (3), there are two rotors (7) having generally rectangular sides that are in close contact with the peripheral wall surface (4), the upper surface (5), and the lower surface (6) of the working chamber (3), respectively. ), (8) are arranged coaxially so that they can rotate independently about the center line (9) of the working chamber (3) in a state where they intersect with each other, and these rotors (7), ( 8), the working chamber (3) becomes 4
a rotor (16) so arranged as to be divided and associated with the rotor (7) so as to rotate at twice the angular velocity of one rotor (7) and at twice the angular velocity of the other rotor (8); a rotor (17) rotationally associated with the rotor (8);
are rotatably and coaxially supported in the rotor housing (1), respectively, and the rotor (16) is connected from the rotor (7), (8) to
), (17) is transmitted to the output shaft (28) via a cam device, and the cam device is connected to the rotor (7),
(8) in the same direction, and the output shaft (28)
When the angular velocity of rotation of rotors (7), (8) is constant
has a maximum value of angular velocity of 2 degrees and a minimum value of angular velocity of 2 degrees during one rotation, and when the angular velocity of one rotor (7) is maximum, the angular velocity of the other rotor (8) is minimum. The rotation of the rotors (7) and (8) is regulated so that when the angular velocity of one rotor (7) is minimal, the angular velocity of the other rotor (8) is maximal, and furthermore, the rotor housing (1) is equipped with a spark plug (26), an exhaust hole (25), and an intake hole (24), and is divided into four parts by the rotors (7) and (8) during one rotation of the rotors (7) and (8). A rotary engine characterized in that each of the working chambers (3) carries out explosion, expansion, exhaust, and compression strokes. 2. Means for rotating one rotor (16) at twice the angular velocity of one rotor (7) and rotating the other rotor (17) at twice the angular velocity of the other rotor (8). As such, the shaft (10) of one rotor (7) is inserted into the hollow shaft (11) of the other rotor (8) so as to be mutually rotatable, and the hollow shaft (11) of the other rotor (8) is inserted into the hollow shaft (11) of the other rotor (8). Top edge (
11') protrudes upward from the rotor housing 1, and the shaft (10) of the one rotor (7) is at its upper end (10').
) protrudes further upwards from the upper end (11') of the hollow shaft (11), and the upper end (10') of the shaft (10) of one rotor (7)
') and the upper end (1) of the hollow shaft (11) of the other rotor (8).
1') has a gear (14) having the same pitch circle radius a.
), (15) are attached non-rotatably to the rotors (7), (8), respectively, and each rotor (16), (17)
are pinion gears (20
), (21) and arms (22), (23) that rotate integrally with each pinion gear (20), (21), and each pinion gear (20), (21) is connected to each of the aforementioned gears. The rotors (16) and (17) are mounted on a common shaft (18) parallel to the center line (9) of the working chamber (3) while meshing with (14) and (15). The rotary engine according to claim 1, characterized in that: 3. As the cam device, each rotor (16), (17)
Elongated holes (36) and (37) are formed in the arms (22) and (23) in the length direction, respectively.
) and (23) are respectively installed on one side of the common shaft (18) in a direction perpendicular to the common shaft (18), while the output shaft (2
The crank (27) with 8) as the crankshaft has two crank pins (31a) and (31b) corresponding to the long holes (36) and (37) of each arm (22) and (23) as an output shaft. (28) protrudes at a symmetrical position with respect to the center line (29),
The output shaft (28) of the crank (27) is connected to the rotor (1).
6) is parallel to the common axis (18) of (17), and the distance c between the center line (29) of the output shaft (28) and the center line (32) of the common axis (18) is 0<c <b (b is the output shaft (2
8) center line (29) and crank pin (31a), (3
1b), and each crank pin (31a), (31b) is connected to each arm (22), (23) through a long hole (36), (23), respectively.
3. The rotary engine according to claim 2, wherein the rotary engine is slidably fitted into the rotary engine. 4. As the cam device, each rotor (16), (17)
The arms (22') and (23') have a common shaft (1
Pins (38a) and (38b) of the same diameter are provided protrudingly at positions equidistant from the center line (32) of the arm (2).
2') and (23') are respectively provided on one side of the common shaft (18) and extend in a direction perpendicular to the common shaft (18), while a block (39) is provided at the arm side end of the output shaft (28). )
is fixed, and a groove (40) passing through the center line (29) of the crankshaft (28) is formed on the arm side surface of the block (39).
) to arm (22'), pin (38a) of (23'),
(38b), and the output shaft (28) is parallel to the common axis (18) of the rotors (16) and (17) and common to the center line (29) of the output shaft (28). The distance f between the center line (32) of the shaft (18) is 0<f<e (e is the center line (32) of the common shaft (18) and each pin (38a), (38
The pins (38a) and (38b) are supported rotatably so that the distance between the center line of the block (38a) and
Claim 2 characterized in that it is slidably fitted into the groove (40) of 9).
Rotary engine as described.