CN201202504Y - engine rotary valve - Google Patents

Abstract

The utility model relates to a rotary valve for a rotary engine and comprises an engine; one end of an intake and exhaust outer pipe of the rotary valve is directly connected with the internal side of a cylinder head; the front end of an intake and exhaust inner pipe is sealed and nested in the intake and exhaust outer pipe; the rear end of the intake and exhaust inner pipe is arranged in a shaft hole of a tooth-shaped belt wheel and driven by the tooth-shaped belt wheel to rotate; and air holes are correspondingly arranged on the intake and exhaust inner pipe and the intake and exhaust outer pipe. The rotary valve has the advantages of novel and simple structure, low manufacturing cost, as well as stable and reliable work performance, which effectively improves the engine output power and runs smoothly with small noise; besides, the intake and the exhaust of the valve are smooth, thereby saving energy consumption.

Description

The engine revolution valve

Technical field

The utility model relates to a kind of rotary engine rotary valve, belongs to the engine revolution valve and makes the field.

Background technique

1, CN2403897Y, title " engine revolution valve ", comprise suction valve, valve body, exhaust valve casing, valve body, inlet valve casing and exhaust valve casing are Rotary-table, it in it cavity, the side has air inlet/outlet, the suction port of inlet valve casing communicates with suction tude, its air outlet communicates with cylinder, the suction port of exhaust valve casing links to each other with cylinder, the air outlet links to each other with outlet pipe, advances, one end of exhaust valve also is a Rotary-table, and be inserted in into, in the cavity of exhaust valve casing, the other end is cylindrical body and is with the profile of tooth belt wheel, advance, have cavity in the exhaust valve, the air inlet/outlet of cavity can be overlapping with the air inlet/outlet of valve casing.

2, the air-exchanging structure of existing reciprocating piston type four stroke engine opens and closes reciprocal valve by camshaft over against cam and finishes intake and exhaust.There is deficiency in it: the one, and camshaft and reciprocal valve function singleness, structure is compact inadequately, and the 2nd, exist reciprocation mass (as reciprocal valve, spring, tappet etc.) not guarantee, also become the bottleneck of motor speed-raising; Trimotor adopts many valves in order to strengthen air inflow and to accelerate exhaust, complex structure not only, and also in order to overcome the valve spring resistance, motor self power loss increases altogether, has reduced output power.

Summary of the invention

Purpose of design: avoid the deficiency in the background technique, it is few to design a kind of part, easy to manufacture, and cost is low, and rate of fault is few, and reliable operation is maintained engine revolution valve easily.

In order to realize above-mentioned purpose of design.On principle design: rotary valve is by intake and exhaust inner and outer pipe fit, and the intake and exhaust outer tube is fixed, pipe rotation in the intake and exhaust, and utilizes on inside and outside two tube walls of intake and exhaust the pore change in location to finish intake and exhaust.The interior pipe of intake and exhaust respectively is equipped with the profile of tooth belt wheel and is connected with bent axle outside cylinder cap, velocity ratio is the same with the bent axle velocity ratio with existing camshaft all to be 1:2.If camshaft of the prior art is made hollow tube, remove the cam of outside, punching has just become in the intake and exhaust to manage on cam position.When pipe toothed belt wheel is faced in two, after mark and bent axle profile of tooth belt wheel are aimed at and are connected over against mark, interior pipe has just replaced camshaft, pore has replaced cam and reciprocal valve, when pipe pore in the intake and exhaust goes to when intake and exhaust outer tube pore overlaps, be equivalent to cam and back down reciprocal valve, intake and exhaust begin, air inlet by suction tude in intake and exhaust, manage with the intake and exhaust outer tube in two overlap the hole and enter cylinder.Waste gas overlaps in the aperture intake and exhaust pipe by two and enters air inlet-outlet pipe and discharge, and when pipe in the intake and exhaust goes to two pore positions when staggering, the tube wall of pipe covers in the pore on the intake and exhaust outer tube wall in the intake and exhaust, is equivalent to cam and closes reciprocal valve, and intake and exhaust finish.Wait next circulation to restart.

In order to realize above-mentioned purpose of design.In structural design: rotary valve has two kinds of straighttube-type and conical tube types, constitutes by intake and exhaust inner and outer pipe fit.The intake and exhaust outer tube is cast directly in (the intake and exhaust outer tube casts from the cylinder cap along crankshaft direction is parallel) in the cylinder cap, and air inlet-outlet pipe is positioned at cylinder cap rear end (flywheel end) and is connected with outer tube back-end, respectively has a pore to communicate with cylinder on the wall of inside and outside two pipes of intake and exhaust.Pore is positioned at original back and forth valve position.The active section of pipe active section and intake and exhaust outer tube bore is isometric in the intake and exhaust, from intake and exhaust outer tube front loaded (pipe is packed into by the intake and exhaust outer tube back-end in the conical tube type intake and exhaust), pipe front end closed rear end communicates with air inlet-outlet pipe in the intake and exhaust, it is intake and exhaust channel, one pore is respectively arranged with the pipe rotation on two tube walls, the inner and outer pipes air-flow is positioned on the same vertical line.

Conical tube type and straighttube-type difference are that inner and outer pipes is the conical pipe fit, and tapering represented by diameter, as outer pipe range 10cm, and an end diameter 5cm, the other end 6cm connects two ends the inner and outer pipes that just becomes the band tapering with straight line.Make Taper Pipe and be in order to solve sealing, belong to self tightening, this sealing structure mode is being 45 to spend cone angles between reciprocal valve and head valve seat.Compress valve with valve spring again, experimental results show that sealing effect is that the rotary valve conical tube type has kept this structure, has solved sealing problem effectively reliably.

Technological scheme: engine revolution valve, it comprises motor, intake and exhaust outer tube one end of rotary valve directly is connected with cylinder cap is inboard, pipe forward end seal and being enclosed within the intake and exhaust outer tube in the intake and exhaust, the pipe rear end is positioned at the toothed belt axle hole and drives rotation by the profile of tooth belt wheel in the intake and exhaust, and correspondence has pore on interior pipe of intake and exhaust and the intake and exhaust outer tube.

The utility model is compared with background technique, the one, novel structure, simple, cost is low; The 2nd, stable and reliable working performance; The 3rd, not only improved the output power of motor effectively, and operate steadily, noise is little, intake and exhaust are smooth and easy, saved energy consumption.

Description of drawings

Fig. 1 is the structural representation of engine revolution valve.

Fig. 2 is the structure for amplifying schematic representation of the middle intake and exhaust inner and outer pipe of Fig. 1.

Embodiment

Embodiment 1: with reference to accompanying drawing 1.The engine revolution valve, it comprises motor 1, and intake and exhaust outer tube 4 one ends of rotary valve directly are connected with cylinder cap is inboard, and the cylinder cap outside is connected with air inlet-outlet pipe.Pipe 2 forward end seal and be enclosed within and be the sealing rotation in the intake and exhaust outer tube 4 and cooperate in the intake and exhaust, pipe 2 rear ends are positioned at profile of tooth belt wheel 5 axis holes and are driven by profile of tooth belt wheel 5 and rotate in the intake and exhaust, manage in the intake and exhaust 2 and intake and exhaust outer tube 4 on correspondence have pore 3.Pore 3 location intervals are four cylinders, 90 degree, six cylinders, 60 degree, eight cylinders, 40 degree in the intake and exhaust inner and outer pipe 2 and 4, by that analogy.Valve 3 is a pair of or more than 2 pairs or 2 pairs.

The main movement parts of rotary valve only is the intake and exhaust inner and outer pipe (outer tube is directly cast in cylinder cap) of two band pores, and it integrates camshaft and reciprocal valve function, and wherein pipe has replaced camshaft in the intake and exhaust.The suitable cam position in pore position, and intake and exhaust inner and outer pipe pore change in location has replaced reciprocal valve function.As be used for vertical type multi-cylinder (vertical type four cylinders), and pipe pore location interval is the 360/4=90 degree in the intake and exhaust, six cylinders are 60 degree.By that analogy, the intake and exhaust inner and outer pipe is a common type along each cylinder cylinder cap of the parallel perforation of crankshaft direction, and air inlet-outlet pipe is located at cylinder cap back (flywheel end) and communicates with pipe in the intake and exhaust.Interior pipe front end is connected with bent axle over against the profile of tooth belt wheel in the cylinder cap external application, and pipe rotates in being driven by bent axle.

Embodiment 2: on embodiment 1 basis, the interior pipe 2 of intake and exhaust is the tapering pipe and is enclosed within the intake and exhaust outer tube 4, and intake and exhaust outer tube 3 is the tapering pipe and is connected with cylinder cap is inboard, and the diameter that described tapering pipe is the vial two ends does not wait, and is mainly used in single-cylinder engine.

What need understand is: though the foregoing description is to the utility model detailed text description of contrasting; but these text descriptions; it is simple description to the utility model mentality of designing; rather than to the restriction of the utility model mentality of designing; the combination of any not super the utility model mentality of designing, increase or modification all fall in the protection domain of the present utility model.

Claims (6)

1. An engine rotary valve, which includes an engine (1), is characterized in that: one end of the intake and exhaust outer pipe (4) of the rotary valve (1) is directly connected to the inner side of the cylinder head, and the front end of the intake and exhaust inner pipe (2) Sealed and set in the intake and exhaust outer pipe (4), the rear end of the intake and exhaust inner pipe (2) is located in the shaft hole of the toothed pulley (5) and driven by the toothed pulley (5), the intake and exhaust Correspondingly, air holes (3) are opened on the inner pipe (2) and the outer pipe for intake and exhaust (4). 2. The engine rotary valve according to claim 1, characterized in that: the air holes (3) of the intake and exhaust inner tubes (2) are spaced at 90 degrees for four cylinders, 60 degrees for six cylinders, and 40 degrees for eight cylinders, and so on . 3. The engine rotary valve according to claim 1, characterized in that: there are one pair of valves (3) or two or more than two pairs. 4. The engine rotary valve according to claim 1, characterized in that: the intake and exhaust inner pipe (2) is a tapered pipe and is sleeved in the intake and exhaust outer pipe (4). 5. The engine rotary valve according to claim 1, characterized in that: the intake and exhaust outer pipes (3) are tapered pipes and are connected to the inner side of the cylinder head. 6. The engine rotary valve according to claim 4 or 5, characterized in that: the tapered tube means that the diameters at both ends of the tube are not equal.

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