JPS5851208A - Sealing device for cylinder chamber in rotary intake and exhaust type internal-combustion engine - Google Patents

Abstract

PURPOSE:To maintain a superior air-tightness in the cylinder chamber by a method wherein the intake and exhaust column valves are rotatably arranged adjacent to the intake and exhaust ports, while these valves are covered by a pair of valve seats formed to have a semi-cylindrical specific structure. CONSTITUTION:In a rotary intake and exhaust type internal combustion engine, the intake and exhaust column valves 5, 6 are rotatably installed in their lateral direction in a communication passage between the intake pipe 3, the exhaust pipe 4 and the cylinder chamber 2, respectively, and these valves 5, 6 are rotated in synchroneous with a rotation of the crank shaft to perform an intake and exhaust operation. In this case, a pair of semi-cylindrical valve seats 9a, 9b are covered at the outer circumferential surface of each of the valves 5, 6 by the close contact spring 10 at their inner circumferential surfaces. Sealed projections 13...fitting to the sealing projections 14...of the bearing hole 11 are projected at the outer circumferential surface of each of the seats 9a, 9b to enable a prevention of compressive leakage from the expansion clearance (a) of the column valves.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a co-rotating intake/exhaust internal combustion engine that is opposed to a cam-tappet intake/exhaust internal combustion engine, and can reliably maintain airtightness in the cylinder chamber and significantly improve combustion effects. The cylinder chamber sealing device for a rotary intake/exhaust internal combustion engine will be described in detail with reference to the accompanying drawings.

The cylinder chamber (2) of the cylinder block +1) and the intake pipe (
A cylindrical intake valve ([S
) - A cylindrical exhaust valve (6) is installed horizontally so as to be freely rotatable, and a unilateral IN valve is installed on the intake/exhaust cylindrical pulp (57 (6), respectively).
An intake passage hole (power and exhaust passage hole (8)) was bored from one side to the other outer peripheral surface, and the intake/exhaust cylindrical pulp f5+ +61 was synchronized with the rotation of the crankshaft. A rotary intake/exhaust type internal combustion engine (2) is rotated at a speed that allows the valve timing to be obtained to perform intake/exhaust.
A pair of half-cylindrical valve sheaths (9a) (9b) are fitted with the inner circumferential surfaces of the valve sheaths (9a) (9b) in close contact with the outer circumferential surfaces of the valve sheaths (9a) (9b) A cylindrical valve expansion gap (a) is formed between the cylindrical valve bearing hole Uυ and the inner periphery of the cylindrical valve bearing hole Uυ, and each valve seat) (9a)
(9b) has a connecting hole and a valve seam)
(9a) On the outside +4 i of (9b), several sealing protrusions are provided surrounding the communication opening a, and several sealing protrusions a4J that engage with the sealing protrusions 0J are attached to the cylinder. A seal groove I and a seal protrusion 1 are formed on the inner surface of the valve bearing hole U.
Cylindrical valve expansion gap (a) with 131 in occlusion
This cylindrical valve expansion gap (
Due to the gas pressure in the cylinder chamber (2) flowing into a), the cylindrical pulp for intake and exhaust (51t63 valve &- on the outer periphery)
(9a) (9b) Inner I? It is characterized by the fact that two parts are provided so as to bring the ilI music into close contact with each other and maintain airtightness within the cylinder chamber (2).

This figure shows a two-cylinder internal combustion engine. , the exhaust gas is also directed to the adjacent υ1mi (4), and each cylindrical valve +51 (6J) is rotated at the rotation speed of the crankshaft i.

In addition, the sealing convex strips (1) and 4 sealing strips (Q4) in this figure are formed into three rectangular shapes that match the birth canal window.

Code (1 piston, (16) is the spark plug, aη
is the transmission gear.

(5) Also, between the outer circumferential surface of the cylindrical pulp for intake/exhaust (5) (6) and the inner circumferential surface of the valve seams (9a) (9b), i.e.,
To lubricate the sliding movement, use cylindrical pulp for intake and exhaust t5) +
61 is hollowed out and cylindrical pulp for intake/exhaust (5) (6
), forcefully inject oil into the shaft of the intake/exhaust cylindrical pulp (5), (6) and insert the front sealing spring (1).
Lubrication holes were drilled at four locations facing the valves V- (9a) (9b), and on the inner peripheral surface of the valve seams (9a) (9b), the opening metal side of the communicating window (u) and the valve (V-) (9a) (9b). An oil groove (19) extending in the horizontal direction is formed so as not to intersect with the outer edge of the groove, and lubricating oil is discharged into this oil groove through the oil fill hole α marked 1J for lubrication. There is.

Most conventional internal combustion engine intake and exhaust systems are of the cam/tapppet intake/exhaust type; in other words, a cam-shut rotating spool is connected to the crankshaft via a chain and gears. The valve is opened and closed via a tappet, but the valve is opened and closed by converting the rotational movement of the crankshaft into the reciprocating movement of the tappet (-Therefore, there is a large motion transmission loss, and vibrations and
There were drawbacks such as high drive and a large number of grooved parts, so the 1-1 intake and exhaust system was devised.
) 411 also performs intake/exhaust by simply rotating the cylindrical intake/exhaust valve.

However, cylindrical valves are constantly exposed to high heat and expand, causing the valve diameter to change, so maintaining the airtightness of the cylinder chamber is extremely difficult. ! This is 11th Chung.

The present invention is a cylinder chamber sealing device for such a 1g1 intake/exhaust type internal combustion engine, in which a pair of half-cylindrical cylinders are installed on each outer peripheral surface of the cylindrical intake/exhaust valve (51 (6)) as described above. Attach the valve seats (9a) (9b) to the dense layer spring tllll.
Therefore, the inner circumferential surfaces are fitted in a laminated state, and a cylindrical valve expansion gap (a) is formed between the outer circumferential surface of the valve seat (9a) (9b) and the inner circumferential surface of the cylindrical valve bearing hole 0υ, And each valve seam) (9a) (9b) has a communication window (1 hole is drilled, and a valve seam) (9a) (9
b) Several sealing protrusions U4 are protruded from the outer peripheral surface surrounding the communication window α, and several sealing protrusions αa that engage with the sealing protrusions α are attached to the inner peripheral surface of the cylindrical valve bearing hole 0υ. (Due to the formation of the cylindrical pulp, the high pressure gas generated in the cylinder chamber (2) is prevented from leaking from the cylindrical pulp agglomeration gap (a) by the airtight action of the sealing protrusion U31 and the sealing groove [14]. This makes it possible to maintain airtightness within the cylinder chamber (2) extremely reliably and well.

Furthermore, the high pressure gas introduced into the cylindrical valve expansion gap (a) acts to densely layer the inner peripheral surfaces of the intake/exhaust cylindrical valves (valve seats on the outer peripheral surface of 51 (6)) (9a) and (9b). Since this contact pressing action is caused by high-pressure gas, the contact action is even more reliable and good, and the airtightness of the cylinder chamber (2) can be maintained more reliably and better (second reason).

In addition, the valve seat) (9a) (911) is not completely cylindrical but is formed of a pair of half-cylindrical shapes, and is fitted with a tight spring 00) to form a cylindrical intake/exhaust valve 15) +
6), so the cylindrical intake/exhaust valve t
5Jf6) thermally expands to form a cylindrical intake/exhaust valve (5)
Even if the diameter of +6) changes, the valve seat) (9a) (
9b) Inner IM-direction and g&air/exhaust cylindrical valve (5) (
6) An unreasonable gap with the outer peripheral surface does not occur, and even better airtightness can be maintained (9).

As described above, according to the present invention (-), in a rotary intake/exhaust type internal combustion engine that is opposed to a cam tappet intake/exhaust type internal combustion engine, the airtightness in the cylinder chamber can be maintained well and reliably, and the combustion effect can be significantly improved. This provides a cylinder chamber sealing device for a rotary intake/exhaust internal combustion engine (two types) that has excellent practical effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 8111 is a longitudinal sectional view, FIG. 2 is a flat curved view, FIG. 3 is a vertical sectional view of the main part, and FIG. be. (1)...Cylinder block, (2)--Cylinder chamber,
(3)...Intake pipe, (4)...Exhaust pipe, (5+...Cylindrical valve for intake, (6)...Cylindrical valve for exhaust, (force...
+a Air communication hole, (8)...Exhaust communication hole, (9a) (9
b)...Bullet shield (10) -G, Bound...Spring for sealing, (l)...Cylindrical pulp bearing hole, (17J...Communication window, 03)...Sealing protrusion, (1)
4)...Sealing groove, (a)...Cylindrical pulp expansion gap. September 21, 1980 Procedural Amendment Form Engraved on July 13, 1980 1. Indication of the case 1987 Patent Application No. 149022 2. Title of the invention 3. Person making the amendment Relationship with the case Patent applicant Makoto Nishiwaki 4, Agent (self-motivated) Description 1, Title of the invention Combustion chamber sealing device 2 in a rotary intake/exhaust type reciprocating engine C2, Claims: Communication path between the combustion chamber of a cylinder block and an intake pipe In the communication passage between the combustion chamber and the exhaust pipe, a cylindrical intake valve and an exhaust cylindrical valve are rotatably installed. An intake passage hole and an exhaust passage hole are bored from one circumferential surface to the other outer circumferential surface, and the intake/exhaust cylindrical valve is rotated at a speed that provides valve timing synchronized with the rotation of the crankshaft. Rotating the intake/exhaust type reciprocating engine (two rotation intake/exhaust type reciprocating engine)
1) Each of the outer circumferential surfaces (2. A pair of half-tubular valve seats is fitted tightly with the spring (2) so that the outer circumferential surface of the valve seat and the inner circumference of the cylindrical valve receiving hole are tightly fitted. Between the surface (
A space between two cylindrical valves is formed, and two communicating windows are formed in the valve seat, and several sealing convex protrusions are provided on the outer circumferential surface of the two-cylinder valve seat, surrounding the communicating windows. , several sealing grooves are formed on the inner surface of the cylindrical valve receiving hole, and the sealing grooves and the sealing grooves are arranged (-). Intake and exhaust type Shinopro engine (combustion chamber sealing device in two) 3. Detailed description of the invention The present invention is a valve intake and exhaust type reciprocating engine
2 Opposed rotary intake and exhaust type reciprocating engine odor system, ensuring good airtightness in the combustion chamber (2) Combustion chamber sealing device in a rotary intake and exhaust type reciprocating engine (2) that can significantly improve intake and exhaust efficiency (Please refer to the attached drawings.) The details are as follows: Combustion chamber (2) of cylinder block (1) and intake pipe (3)
and the communication passage between the combustion chamber (2) and the exhaust pipe (4) (=, the cylindrical intake valve (5) and the exhaust cylindrical valve (6) are freely rotatable (= horizontally installed). And this intake
Exhaust cylindrical valves (5) and (6) - An intake communication hole (7) and an exhaust communication hole (8) are bored from one outer circumferential surface to the other outer circumferential surface, respectively, and the above-mentioned intake and exhaust Cylindrical valves (5) (6);, r, rotate at a speed that provides valve timing synchronized with the rotation of the crankshaft to perform intake and exhaust (in the rotary intake/exhaust type reciprocating engine, the above-mentioned intake and exhaust Exhaust cylindrical valve t51 (a pair of half-cylindrical valve seats on each outer peripheral surface of 61) (9a)
(9b) is fitted with the tight fitting spring Cl0) (=Therefore, the inner peripheral surface is fitted in a tight state, and this valve seat) (9a)
Between the outer circumferential surface of (9b) and the internal surface of the cylindrical pulp receiving hole (forming the two cylindrical valve expansion gaps M (a) and the respective valve seams) (9a) (9b) - the two communicating windows α Several sealing protrusions (one stage protruding and surrounding the outer periphery of (9a) (9b) if] (-1 communication window 02) are provided, and this sealing protrusion a3) Several sealing grooves (14) that engage with the cylindrical valve receiving hole αυ are formed on the inner surface of the cylindrical valve receiving hole αυ, and the cylindrical valve expansion gap (a ), and also prevents compression leakage from the cylinder valve (9a
) The inner peripheral surface is brought into close contact with the combustion chamber (2) to maintain airtightness inside the combustion chamber (2). The through hole (7) and the exhaust communication hole (8) are oblique holes, that is,
The mixed gas is taken in through the adjacent intake pipes (3) l''-, and the exhaust gas is also brought into instantaneous contact with the exhaust pipes (4) (=
Each cylindrical valve (5) (6) to be evacuated
The sealing convex strip (1'3/sealing concave strip 04) in the figure is made into a rectangular shape that matches the communication window (121). The symbol (I5) is the piston, αe is the spark plug, and ←D is the transmission gear. 9a) (9b) between the inner peripheral surface, that is,
Lubricating the sliding surfaces is done using cylindrical intake/exhaust knobs (51).
6) Hollowed out cylindrical valve for intake and exhaust +5) +
6) Forcefully inject oil (2) from the shaft part and apply it to the outer peripheral surface of the cylindrical intake/exhaust valves (5) and (6) to tighten the sealing spring a.
Lubricating holes (18) are drilled at four locations facing 0, while
(9a) (9b) Inner peripheral surface (2, communication window (14 openings and valve sea) (9a) (9b)
), so as not to intersect (2), form an oil groove extending in the lateral direction (2), and discharge lubricating oil through the oil groove (18) to provide lubrication. Most conventional reciprocating engine intake and exhaust systems are of the Hohetpalf type, meaning that the camshaft is rotated from the crankshaft via a chain and gears, and the cam causes the tappet to reciprocate. The valve is opened and closed via this tappet, but by converting the rotational movement of the crankshaft into the reciprocating movement of the tappet to open and close the valve, there is a large motion transmission loss and large vibration. The number of component parts was large, and the poppet pulp itself had the disadvantage of creating resistance during intake and exhaust, so the rotary intake and exhaust system was devised, in which the cylindrical valve for intake and exhaust is rotated. However, cylindrical valves are constantly exposed to high heat and expand.
Since the diameter of the valve changes, it is extremely difficult to maintain airtightness of the combustion chamber. The present invention is a combustion chamber sealing device for such a rotating intake/exhaust type engine. A pair of valve seats (9a) (9b) is fitted with a tight fitting spring 00) (2, so that the inner circumferential surfaces are tightly fitted, and the outer circumferential surface of the pulp-) (9a) (9b) and the cylindrical valve receiving hole. α
1) Inner peripheral surface. (9a) (9b) (Drilling the communication window 2 and further C 2 valve seam) (9a) (9
b) Outer circumference 1) iIc, several sealing protrusions 03) are protruded in a state surrounding the communication window (12), and several sealing protrusions (I4) that engage with the sealing protrusions α are inserted into the cylindrical valve receiving hole aυ. By forming the inner circumferential surface (2) of the combustion chamber (2), the high-pressure gas generated in the combustion chamber (2) is prevented by the air-tight action of the sealing protrusion (13) and the sealing groove (14) (2). Gas leakage from @(a) is prevented, making it extremely reliable and in good condition.
2) The airtightness inside the cylinder pulp expansion gap (a) (2) can be maintained through the cylinder pulp expansion gap (a) (2).
! Pulp sea on the i1 surface) (9a) C2 acts to bring the inner circumferential surface into close contact, and this pressurizing action is caused by the high pressure gas, so a more reliable and good adhesion occurs, and the combustion chamber (2) (9a) (9b) is not completely cylindrical but is formed of a pair of half-tube shapes, and has a sealing hole (2).
Ne (10) l2 Therefore, the cylindrical valve for intake/exhaust (5
) (6) Since the cylindrical intake/exhaust valves (5) (I6) are fitted over each other, even if the diameter of the intake/exhaust cylindrical valves (5) (6) changes due to thermal expansion, Pulp Sea) (9a) (9b) An unreasonable (flow rate) between the inner circumferential surface and the outer circumferential surface of the intake/exhaust cylindrical valves (5) and (6) does not occur, and even better airtightness can be maintained. However, the material of the valve seat shall have elasticity.As described above, according to the present invention C2, in a rotary intake/exhaust type reciprocating engine C2 that is opposed to a poppet valve (loop intake/exhaust type reciprocating engine), the cylinder We provide a rotary intake/exhaust type Renpro engine that has excellent practical effects such as keeping the airtightness of the room well and significantly improving the intake/exhaust efficiency. 4. Brief description of the drawings The drawings show one embodiment of the present invention (Figure 1 is a longitudinal sectional view, Figure 2 is a plan view, and Figure 3 is a longitudinal sectional view of the main parts. side view,
FIG. 4 is a perspective view of the main part, and FIG. 5 is a perspective view of the cylindrical pulp. (1)...Cylinder tab I grip, (2)...Combustion chamber, (
3) Intake pipe, (4) Exhaust pipe, (5) Intake cylindrical valve, (6) Exhaust cylindrical valve, (7)
・Intake hole, (8)...Exhaust hole, (9a)
(9b)... Valve seat, θ0)... Adhesion spring, (
II)...Cylindrical valve receiving hole, a3...Communication window, (13
1...Sealing convex strip, (14)...Sealing concave strip, (a)...Cylindrical pulp expansion gap. July 13, 1982

Claims (1)

[Claims] The communication passage between the cylinder chamber and the intake pipe of the cylinder block, and the communication passage between the cylinder chamber and the exhaust pipe (2. A cylindrical valve for intake and a cylindrical pulp for exhaust are installed horizontally so that they can rotate freely, and the intake and The cylindrical pulp for exhaust is provided with an intake passage hole and an exhaust communication hole that are penetrated from one outer circumferential surface to the other outer circumferential surface, respectively, and the cylindrical pulp for intake and exhaust is synchronized with the rotation of the crankshaft. In a rotary intake/exhaust type internal combustion engine that rotates at a speed that allows valve timing to be obtained and performs intake and exhaust, a pair of half-tubular valve seats are tightly attached to the outer peripheral surfaces of the cylindrical pulp for intake and exhaust, respectively. The inner peripheral surface is tightly fitted by a spring, and a cylindrical valve expansion gap is formed between the outer peripheral surface of this valve seat and the inner peripheral surface of the cylindrical pulp bearing hole, and a communication port is bored in each valve seat. In addition, (several sealing protrusions are protruding from the outer circumferential surface of the Nivalp sheet surrounding the communication window, and several sealing protrusions that engage with the sealing protrusions are placed on the inner circumferential surface of the cylindrical pulp bearing hole. With the seal grooves interlocked with each other, compression leakage from the cylinder-pulp expansion gap is prevented, and the gas pressure inside the cylinder chamber flowing into the cylinder pulp expansion gap allows air to be taken in and exhausted]11 A rotary intake/exhaust type internal combustion engine (
Two cylinder chamber sealing devices.