CN1294257A

CN1294257A - Wave canal rotary piston engine

Info

Publication number: CN1294257A
Application number: CN 00121167
Authority: CN
Inventors: 齐长安
Original assignee: QI CHANG'AN
Current assignee: QI CHANG'AN
Priority date: 1999-10-26
Filing date: 2000-07-28
Publication date: 2001-05-09
Anticipated expiration: 2020-07-28
Also published as: CN1107160C

Abstract

A reciprocating piston type engine features that the wave track by sine or non-sine rule is used to replace the crankshaft-connecting rod mechanism. Under the mutual action between wave track, pin and slot, the mainshaft only does rotation movement. Its advantages include high drive efficiency, high torque, simple structure, smooth running small size and light weight.

Description

Wave canal rotary piston engine

The invention belongs to the internal-combustion piston engine technical field.

Existing reciprocating-piston engine all is to utilize the connecting rod that links together with piston to drive crankshaft operation, and the widely used this motor of people has multiple advantages such as processing is simple, sealing is easy, cheap, the appurtenances technology is comparatively perfect at present.In recent years, though there is rotary engine to drop into actual the use with outstanding advantages such as turning round steadily, but because the existence of problems such as its machining accuracy, cost is difficult to promote in market, the absolute predominance of current reciprocating-piston engine market share does not still have at all and shakes.But the piston engine of crankshaft connecting rod type certainly will restrict the raising of the various technical orders of motor because of its fixing structural type.

The present invention's purpose is by putting into the melting pot the structure of crankshaft-link rod, the performance of motor be improved, construct simplification, cost reduces, running steadily; Widen the mentality of designing of reciprocating-piston engine.

Wave canal rotary piston engine crankshaft-free connection rod mechanism, the substitute is structure as described below: cylinder lower is by two relative peripheral cams (cam mechanism that forms at the end face of thick-walled tube, common cam is the mechanism that forms in cylindrical lateral projections) the wavy track (hereinafter to be referred as track) formed, the piston bottom have radially and with the corresponding pin of wavy track crest number, pin can be in track flexible motion, the crest of track and the distance between the trough are exactly the stroke of piston.

Different with the crankshaft connecting rod type piston engine is, this motor is when work, piston is subjected to the pressure of combustion gas on the one hand, be subjected to the active force of track on the other hand, force piston both reciprocating, rotate again, and rotatablely moving of piston passes to the power output that main shaft is finished motor by pin.The fluctuating of crankshaft connecting rod type piston engine piston can only be by sinusoidal rule, and the to-and-fro motion rule of this engine piston depends on the fluctuating rule of track, and it can be by sinusoidal rule, also can be by the non-sine rule; Can also make different stroke drive main spindle institute gyration differences, thereby reach the purpose of required designing requirement.The number of stroke that the tachometer value of main shaft is finished for the unit time inner carrier among the present invention divided by 2 again divided by the number of wavy track crest.The axis of the piston-engined casing of crankshaft connecting rod type is two orthogonal straight lines, and the dead in line of the axis of main shaft and piston and cylinder among the present invention.

Because the to-and-fro motion rule of piston depends on the fluctuating rule of track, therefore people can weigh the advantages and disadvantages and be designed to the track of non-sine rule, thereby thoroughly break away from the piston that the crankshaft ﹠ connecting machine causes and to have widened design surface greatly by the reciprocating constraint of sinusoidal rule.People can take all factors into consideration from the stressing conditions of combustion gas work done, parts, good ventilation, the many-sides such as distribution of each stroke angle of eccentricity, design the to-and-fro motion rule that reasonable track is more determined piston.

Vibration is the big problem of reciprocating-piston engine, and the piston engine of crankshaft ﹠ connecting will accomplish that balance is the comparison difficulty preferably, and mechanism's complexity, weight are big, the cost height is a subject matter.The balance of Wave canal rotary piston engine is easy to realize, because it only needs the reciprocal inertia force of equalizing piston to get final product, can accomplish complete equilibrium with simple mechanism.Opposed twin-tub (four cylinders, eight cylinders) balanced controls specially just can be accomplished complete equilibrium, i.e. friction.

For the engine piston axis be in vertically, cylinder head says in last placement situation, Wave canal rotary piston engine is when work, the frictional force between piston and the cylinder is zero in theory, and is in fact also very little.This is because piston only is subjected to the pressure of above-below direction and the pressure effect between track and pin, and the latter do not have component again on side direction, and this is that crankshaft ﹠ connecting can't be accomplished at all.Obviously it can prolong the working life of piston and cylinder greatly.

The axis of the piston-engined casing of crankshaft connecting rod type is two orthogonal straight lines, and the dead in line of the axis of main shaft and piston and cylinder among the present invention, the axis of whole machine body can become straight line, makes that complete machine structure is simple, volume is little, in light weight, and outward appearance is tending towards streamline.

For general work mechanism, the speed of crankshaft of crankshaft connecting rod type motor is higher, and moment of torsion is less, in order to increase moment of torsion, needs a reducing gear between line shaft (bent axle) and work mechanism.The rotating speed of Wave canal rotary piston engine main shaft will be slowly many, moment of torsion is much bigger.With wavy track the motor of three crests being arranged is example, and piston need be finished six stroke main shafts and just circle, i.e. 6 ÷, 2 ÷ 3=1, and this is equivalent to the crankshaft connecting rod type motor speed reducer of 3: 1 is installed; People just can be according to the number of the requirement of working machine design crest like this, with the power that satisfies working machine and the requirement of rotating speed, thereby saves reducing gear, improves power transfer efficiency.For another example, manufacture four-stroke motor with the rail mechanism that two crests are arranged, then piston is finished four stroke axles and is circled, so just can directly be fixed on a cam disk and be used on the main shaft driving opening and closing of inlet and outlet door, thereby save the reducing gear of original four stroke engine driving cam.

Though simplifying, Wave canal rotary piston engine falls bent axle, connecting rod, but therefore do not increase the complexity of machine, more do not reduce the performance of motor, on the contrary, the present invention be on the basis of the whole advantages that keep original motor just like on progressive.Many-sided advantages such as therefore, Wave canal rotary piston engine has that simple in structure, in light weight, torsion is big, friction, cost are low.

Be example with motor below, implementation of the present invention is described with two crests.

Track is made up of last radio frequency channel tube and following radio frequency channel tube, and the tangent distance of upper and lower radio frequency channel face corresponding points is the width of track, and this width is slightly larger than the diameter of pin, with the assurance pin can be in track flexible motion, do not have excessive beating again.Last radio frequency channel tube itself is exactly a cylinder, in the accompanying drawing, Figure 1 shows that cylinder and last radio frequency channel, the structure of the top of cylinder face and whole cylinder outside and existing identical, and just the lower end surface of cylinder is 1/2nd radio frequency channels; Fig. 4 is following radio frequency channel tube, and its upper-end surface is 1/2nd radio frequency channels, it and last radio frequency channel coaxial line, the complete wavy track of the common composition of upper and lower radio frequency channel tube.

The external structure of piston as shown in Figure 2, piston superstructure and existing piston are basic identical, the skirt section can be done very shortly, is fore-set below the piston, pin is fixed on the lower end of fore-set.

Main shaft top shown in Figure 3 is a thick-walled tube, vertically has conduit along pipe, and the width of conduit is slightly larger than the diameter of pin; Pin can move up and down in the conduit of main shaft flexibly, and main shaft only rotates under the driving of pin.

When the mixture combustion in the cylinder, the upper-end surface of piston is subjected to the pressure of combustion gas, the pin of lower end is subjected to the active force of track, make piston in the process that moves downward, must be that axial a certain direction is rotated with its axis, this torsional moment is by the pin drive main spindle, thereby the heat energy that mixture combustion is produced is converted into the required rotation function of people by such device.

Claims

A kind of Wave canal rotary piston engine utilizes the effect between annular wavy track, pin and the conduit with fluctuating, is the rotational energy of main shaft with the combustion gas Conversion of energy of High Temperature High Pressure.The side unfolded drawing of this wavy track can be by sinusoidal rule, also can be by the non-sine rule.During engine operation, piston reciprocates and rotatablely moving, and main shaft only rotates under the driving of pin.The total technical characteristics of said apparatus and existing crankshaft-link rod device is the rotation function that the energy that mixture combustion in the cylinder produces is converted into main (song) axle by piston and transmission device.

Wave canal rotary piston engine is compared its special card with existing crankshaft connecting rod type piston engine:

1, utilize wavy track, pin, conduit, the energy transfer that piston is obtained makes it rotation to main shaft, rather than utilizes the crankshaft-link rod device to do such transmission.The fluctuating rule of wavy track has determined the rule of reciprocating motion of the pistons, and it can be sinusoidal rule, also can right and wrong sinusoidal rule; Can be designed to a wavy track of forming by multiple figure line as requested in the reality.
2, under feature 1 described driving structure mode, the rotating speed of main shaft can reduce by the crest number that increases wavy track, the size of rotating speed equal number of stroke that the unit time inner carrier finishes divided by 2 again divided by the crest number of wavy track.
3, under feature 1 described driving structure mode, the axis of Wave canal rotary piston engine piston and the dead in line of main shaft, and the axis of the axis of crankshaft connecting rod type piston engine piston and bent axle is orthogonal.