JPS61182423A - Rotor piston engine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotor piston engine, and in particular, a rotating cylinder is eccentrically provided inside a cylinder, and this rotating cylinder is
Two circular joints that rotate and slide are supported at equally divided positions, and a rotor piston is connected through the joints, and the tip of the piston rotates and slides while contacting the inner wall of the cylinder in an airtight state. The present invention relates to a rotor piston engine.

The purpose of the present invention is to enable the piston in the cylinder to generate uniform torque from top dead center to bottom dead center, thereby producing smooth and even rotational force, thereby improving thermal efficiency. , provides an economical rotor-piston engine that can significantly increase output.

According to the present invention, it is possible not only to solve various problems of reciprocating engines commonly used in the past, but also to solve problems of known eccentric rotary engines.

In other words, in general, reciprocating engines suffer from mechanical energy loss due to inertia of the reciprocating parts, as well as a reduction in rotational force due to piston compression force generated near top dead center, increased cooling loss, and ignition advance. It has problems that reduce thermal efficiency, such as harmful adverse effects.

In addition, in known eccentric rotary engines, the rotor and cylinder rotate in a state of point contact, so the amount of wear due to friction in the contact area is extremely large, and the airtightness of the area is It becomes difficult to hold the bearing, which results in not only poor lubrication, but also poor cooling, resulting in problems such as thermal deformation.

According to the present invention, it is possible to provide a high-performance rotor piston engine that can solve the problems of the prior art.

Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a rotor piston engine according to the present invention, in which a fixed shaft 2, which is the center of rotation of a rotor piston 1, is provided at the center within a cylinder 4 of a rotor casing. In the @l12, two rotor pistons 1 are rotatably provided facing each other via an annular hinge 7. Inside the cylinder 4 is a rotor piston 1.
A cylinder inner wall surface 3 is formed in a circumferential shape concentric with a fixed shaft 2 so that the piston 1 can rotate while the tip thereof slides. Inside the cylinder 4, a rotating cylinder 5 is provided eccentrically. In other words, 2 points are placed at positions that divide the rotating cylinder 5 into two.
circular joints 6 are rotatably fitted, and a rotor piston is slidably and eccentrically connected to each of the joints 6, and as the piston 1 rotates,
The rotating cylinder 5 rotates eccentrically around the fixed shaft 2.

The circular joint 6 rotates in response to changes in the angle and speed of the two rotor pistons, and the tip 1a of the rotor piston 1 is in airtight contact with the inner wall surface 3 of the cylinder 4. The rotational movement allows the rotating cylinder 5 to rotate eccentrically. Two working chambers a and b, which are partitions, are formed around the rotating cylinder 5 between the cylinder inner wall surface 3 and the rotor piston 1, and suction, compression, explosion, Exhaust stroke).

As shown in FIG. 3, on both the front and rear circumferential surfaces of the rotating cylinder 5,
A circular track protrusion 5' is formed in the center to slidably engage with the circular doman (U shown in the figure) of the side casing (not shown), and a circular track protrusion 5' is formed near the outer periphery to maintain airtightness with the side surface of the side wall casing. A compression ring 5'' is provided to hold the casing, and an oil passage 5'' is provided near the inner circumference to maintain lubrication with the side surface of the side casing.
' is formed.

The outer peripheral surface of the rotor piston 1 has a cylinder inner wall surface 3.
A compression pin 1' that maintains airtightness with the side surface of the side casing and prevents intrusion of combustion gas, etc., and an oil pin 1'' that prevents lubricating oil from leaking are provided at both peripheral ends and in the center, respectively. ing.

The circular joint 6 is formed of two half-rotation slip joints 6' divided into two with a semicircular cross section so as to be able to slide and rotate with the rotating cylinder 5, and is fixed to the cylinder 4 side of the outer peripheral surface thereof. A compression pin 6'' is provided on the shaft 2 side to prevent the intrusion of combustion gas, etc., and an A-il pin 6'' is provided at the center of the outer peripheral surface of the pin to prevent leakage of lubricating oil.

A water jacket 1 is provided around the outer periphery of the cylinder 4, through which cooling water flows through the rotor casing to cool the engine.
1 is provided. Moreover, cooling fins (not shown) for air cooling are provided on the inner periphery of the rotating cylinder 5.

Although the lubricating device is not shown, an oil passage is provided from the shaft 2 through the rotor piston 1 and the circular joint 6 to the rotating cylinder 5, which absorbs the centrifugal force caused by the rotation of the shaft 2, etc., and the oil pressure sent by the oil pump. The lubricating oil is forced to circulate.

The cylinder 4 has an inlet port 8a and an exhaust port 9 on its substantially opposite surface.
A is opened, an intake valve 8 and an exhaust valve 9 are provided so that both ports 8a and 9a can be opened and closed, and a spark plug 1 is provided near the intake port 8a.
0 is provided in the cylinder 4 with an electrode protruding therefrom.

The rotor piston 1 and the rotating cylinder 5 are rotated around the shaft 2 as the center of rotation.
When rotating inside the cylinder 4, the cylinder inner wall surface 3
The tip of the compression pin 1' is brought into contact with the casing, and the side surface of the compression pin 1' and the compression ring 5'' are brought into contact with the side casing to maintain airtightness and rotate while being lubricated with lubricating oil.

Therefore, the mixing of combustion gas is prevented and the quality of the lubricating oil is maintained.
Friction and wear of the cylindrical joint 6 and cylinder inner wall 3 are reduced as much as possible, and a decrease in output performance is prevented.

In general, the piston of a reciprocating engine is in direct contact with the cylinder in a straight line and reciprocating, or the rotor piston of the rotor piston engine of the present invention is concentric with the inner wall surface 3 of the cylinder. Performs rotational motion while making contact on an arc. Further, the circular orbital protrusion 5' of the rotating cylinder 5, which is provided eccentrically around the shaft 2 via the rotor piston 1, rotates in an orbital manner in a state where the concaves and convexes are engaged with the circular orbital groove of the side casing. At this time, the speed between the rotor piston 1 and the rotating cylinder 5 is such that it corresponds to the angular difference. Further, the rotor piston 1 and the rotating cylinder 5 are connected to each other so as to be slidable through a half-turn slip joint 6'. The rotor piston 1 is connected to the shaft 2 via an annular hinge 7 that is slidably fitted to the outer periphery of the rotor piston 1. The relative angle of changes.

The rotational force of the rotor piston 1 rotating inside the cylinder 4 is
It is adapted to be taken out from the rotating cylinder 5.

Next, the operation of the above embodiment will be explained mainly with reference to FIG.

(1) and (2> in Fig. 2 (a) show the suction stroke and exhaust stroke, and when the rotor piston 1 rotates in the forward direction, the suction valve 8 and the exhaust valve 9 open, and the intake port a and the exhaust The port 9a is opened, and as the volume changes, the introduction of the air-fuel mixture and the discharge of the combustion gas proceed simultaneously.

(1) and (2> in Fig. 2 (b) indicate the compression stroke, and the suction valve 8 and exhaust valve 9 are closed by the rotation of the rotor piston 1 following the above-mentioned Fig. 2 (a) and (2). The valve is closed, the intake port 8a and the exhaust port 9a are closed, and compression is applied to the air-fuel mixture that has already been taken in.

(1) and (2> in Fig. 2 (c) indicate the explosion stroke, and the air-fuel mixture that has completed the compression stroke is ignited by the spark plug 10 and ignites and becomes engraved.Then, the dregs that have finished combustion are , is exhausted during the exhaust stroke of (1) and (2) in FIG. 2(A).

At this time, both the working chambers a and b between the cylinder inner wall surface 3 on both sides of the rotor piston 1 and the rotating cylinder 5 are spaced apart from each other by one stroke while the above four strokes are repeated. The output shaft will rotate 3/2 times.

With this kind of compound cycle, the two working chambers a and b perform four strokes in succession with one stroke shifted, and the output side 1 rotates by 3/2 in one explosion, thereby reducing unevenness. You can get rotation without.

Therefore, the torque is flattened over a wide range.

In addition, there is less vibration and noise, and the engine has a semi-permanent lifespan. Furthermore, since there is no need for ignition advance or Δ-variation, the structure and handling are simplified. In addition, since the rotor piston 1 rotates in line contact with the circular joint 6 and in arc contact with the cylinder inner wall surface 3, airtightness is maintained, which not only provides good lubrication but also improves the flow of fuel. It has little loss, provides smooth rotation at both low and high speeds, and has an extremely large effect on improving engine performance.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an example of a rotor-piston engine according to the present invention. FIG. 2 is a stroke change diagram of an example of the same engine. FIG. 3 is a partially cutaway perspective view enlarging the main part of FIG. 1. 1... Rotor piston 2... Shaft 3... Cylinder inner wall portion 4... Cylinder 5... Rotating cylinder 5'... Circular orbit protrusion 5''... Compression ring 6... Circular joint 6'...Half-turn slip joint 6''...Compression pin 6'''-...Oil pin 7...
...Hinge 8...Suction valve 8a...Intake port 9...Exhaust valve 9a...Exhaust port 10
...Ignition plug 11...Water jacket a, b...Working chamber

Claims (1)

[Claims] A fixed shaft, a cylinder having a circumferential wall surface concentric with the fixed shaft, and a plurality of rotor pistons that are rotatably mounted on the fixed shaft at equal intervals while their tips are in airtight contact with the inner wall surface of the cylinder. The rotor piston is pivotally connected to the rotor piston eccentrically with respect to the fixed shaft via a circular joint, and an output shaft is provided so that the space between the piston and the inner wall surface of the cylinder can be formed into a plurality of working chambers. 1. A rotor piston engine characterized in that a rotor piston engine is provided with a rotating cylinder in which a plurality of working chambers are operated in a compound cycle motion in which working strokes of the plurality of working chambers proceed simultaneously.