CN1206786A - Rotary liner type epitrochoidal engine - Google Patents

Abstract

The present invention relates to a kind of two-stroke internal combustion engine designed according to the principle of single-acting vane pump. It is implemented by adopting the following measures: adding a rotary liner between the vane rotor and outer shell, using three synchromesh gears to make the rotary liner and rotor implement synchronous rotation so as to change the higher pair line seal of original rotor blade and pump body into lower pair face seal, and the relative motion speed of the rotor and rotary liner only is 1/5-1/6 of reciprocating piston motion speed. Said invention is applicable to all fields using internal combustion engine, and the compression cylinder designed by using said principle can be used as compressor, oil pump, oil motor and vacuum pump.

Description

Rotary liner type epitrochoidal engine

The present invention is by after fuel and the air mixing, in an airtight active chamber internal combustion, and the working gas that the produces High Temperature High Pressure chamber rotation that directly pushes the work forward, thus realize transformation of energy, the explosive motor of new generation of power is provided to load.

Conventional engine has advantages such as good airproof performance, reliable operation, long service life.But the basic structure scheme of conventional engine also has basic defective-promptly have reciprocating mass, as piston assembly and valve mechanism etc.When further improving engine speed, the inertial force that these reciprocating mass produced sharply increases, and bearing load is significantly increased, and vibration aggravates, and may destroy the proper functioning of valve mechanism.This has just become to improve the motor power per unit of volume, reduce the specific power quality, make motor further to the serious hindrance of high speed development.In order to address this problem, people are seeking to invent a kind of rotary engine simple in structure always.The rotary engine of West Germany engineer wankel invention in 1954 is exactly a wherein successful example.Its appearance, just with its power-to-volume ratio big (power per liter 60-90KW), the specific power quality is little, vibration is slight, and simple in structure, number of spare parts is few, easy accessibility, easy to repair, incendivity low octane value gasoline under identical compression ratio and cause people's attention.At present, the main cause that it can not mass production is at following points: (1) compression ratio improves difficulty, and the firing chamber is difficult to ideal, and the tissue burning is difficult for, so its low pressure economy is relatively poor.General fuel consumption rate 300-340g/kwh, effective efficiency 0.24-0.27.(2) exhaust pollution is big, and the HC compound than reciprocating piston type petrol engine Senior Three doubly.(3) sealing line length, especially circumferential sealing is linear sealing, and Sliding velocity is too big, and is easy to wear, durable poor, and work is reliable not as reciprocating engine.The rotary engine of wankel invention that Here it is can not replace the basic reason of conventional engine so far.

The purpose of this invention is to provide a kind of reliable operation, steadily, volume is little, in light weight, power is big, oil consumption is low, simple in structure explosive motor of new generation.

The present invention is achieved in that the cylinder block inner wall surface is a cylndrical surface, and in the cylinder block, installation one is the vane rotor of e with its eccentric axis, and the number of blade is advisable greater than 4, and compression ratio will increase with the increase of the number of blade.Vane rotor is by cylinder block both sides cylinder head bearings.Adorn one and revolve courage with the isometric sleeve one of vane rotor between vane rotor and cylinder block, its axis is coaxial with cylinder block.Rotor, revolve courage and blade hinged (having slide relative between blade and rotor).In rotor and the both ends of the surface of revolving courage sealing cover is housed, makes and form several independently airtight active chambers between rotor blade.The supporting of revolving courage is born by corresponding bearing on bearing on the sealing cover that revolves the courage both sides and the cylinder block.When rotor with revolve courage when separately axis rotates synchronously, interlobate volume will produce variation clocklike, promptly ascending, descending variation, its work cycle is identical with the two-stroke conventional engine.Rotor and the synchronous rotation of revolving courage be by be contained in the same rotor shaft of gear on the cylinder block one side cylinder head, the gear engagement of revolving on the courage axle realizes.

The present invention divides body structure for compression, work done, after promptly compression cylinder produces pressurized air, provides pressurized air by the inertia one-way valve between two chambeies to work-doing cylinder, realizes scavenging, work done.Two cylinder working frequencies are identical, carry out synchronously, and angular phase difference is advisable with 10 °-60 °.

Because revolving courage, the present invention's employing replace cylinder block to realize the airtight of active chamber, and revolve courage and rotor rotates synchronously, so under the same rotational speed situation, the relative movement linear velocity of piston friction pair is very low, only be the 20-50% of conventional engine, be the 10-30% of Wankel RC configuration, and easily lubricated.There is the clutch release slave cylinder of this motor to adopt compression, work done to divide body structure again, and active chamber is a circle distribution, relief opening unit's angle (output shaft corner) open amount is higher than conventional engine, so it is its work done angle can reach 170 °-175 °, higher 25 °-70 ° than conventional engine work done angle (100 °-150 °).Since the reduction of friction loss, the increasing of work done angle, the comparable conventional engine fuel saving of motor of the present invention 10-40%.Among the present invention because rotor is around the rotation of self axis, blade with revolve courage together around revolving the rotation of courage axis, so complete machine does not have reciprocating mass.This improves power per unit of volume to improving engine speed, and it will be extremely useful reducing the specific power quality, and motor volume of the present invention thus will reduce 40-70% than conventional engine volume, and stable working.

Sealing problem is the key issue of restriction new work engine research always, the sealing surface of each active chamber all adopts the sealing of triangle sphenoid surface among the present invention, its advantage is that triangle wedge-type seal bar is under the effect of spring force and centrifugal inertia force, can realize the wearing and tearing of automatic compensation sealing bar, realize gap-free sealed, thereby improve the reliability of sealing and the working life of Sealing.

Compression cylinder of the present invention can be used as compressor, oil pump, oil motor, vacuum pump use.

Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the cross sectional view of the motor of proposition according to the present invention.

Fig. 2 is the longitudinal sectional view of the motor of proposition according to the present invention.

Fig. 3 is the synchromesh gear engagement partial view of the motor of proposition according to the present invention.

Fig. 4 is the work-doing cylinder operational diagram of the motor of proposition according to the present invention.

Fig. 5 is the engine compresses cylinder working sketch that proposes according to the present invention.

Describe the details and the working condition of the motor of the present invention's proposition in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.

Concrete structure of the present invention such as following Fig. 1, shown in Figure 2.Cylinder block (6) is connected with support (1).Cylinder head (15,18) is equipped with in the cylinder both sides, and cylinder head is provided with position of bearings, two places, is used to revolve the supporting of courage (8) and rotor shaft (3), and cylinder head is provided with the rim of the mouth platform, to guarantee the coaxality of cylinder head and cylinder block.Be equipped with in the cylinder block by revolving rotation work-doing cylinder and the rotation compression cylinder that courage (8), rotor (4,24) and two sidespin courages lids (16,17) are formed, wherein each cylinder is made up of several active chambers, and an active chamber is equivalent to a clutch release slave cylinder of conventional engine.Revolve courage and cover and be provided with the rim of the mouth platform, to guarantee to revolve courage lid position of bearings and the coaxality of revolving courage.Power rotor (4) and compressor drum (24) are with being contained on the rotor shaft (3), and rotor shaft passes and revolves the courage lid, realizes supporting by the bearing on the cylinder head, and outside outputting power.Revolving courage combines with bearing on the cylinder head by the position of bearings of revolving courage and covering and realizes supporting.Be provided with a partition wall in revolving courage, power rotor (4) and compression rotor (24) are separated, partition wall is provided with inertia one-way sealing valve (11) work done cavity is communicated with compression chamber, realizes unidirectional air feed, and inertia one-way valve axis and rotor axis angle are advisable for 10 °-30 °.The end face seal of work done cavity and compression chamber is realized by Stamping Steel Ribbon (7,13).Fig. 3 is equipped with synchromesh gear (19) on the rotor shaft (3), revolve on the courage lid (17) synchromesh gear (20) is housed.Synchromesh gear (19,20) meshes with the gear (26) that is contained on the frame support (21) simultaneously, thereby guarantees rotor shaft and the synchronous turn of revolving courage.Fig. 1, all be equipped with on power rotor and the compression rotor and the blade bearing pin (10) of blade with quantity, in order to eliminate since blade oscillating that eccentric amount e brings and blade with respect to the relative movement of rotor, to guarantee rotor, to revolve courage and do not interfering phenomenon in the rotation process synchronously.

Fig. 4 is an example with work done cavity A, sets forth the working procedure of work-doing cylinder.Illustrate 1 position, relief opening this moment (25) is formed firing chamber (with reference to Fig. 2) with spark plug.Spark plug (5) is lighted the working gas among the work done cavity A, produces high temperature and high pressure gas, and its active force acts on rotor respectively, revolves on courage and the blade.Act on rotor, the power on the courage of revolving is respectively by rotor bearing and revolve the courage bearing and born by body.The power on the blade b of acting on makes rotor, revolve courage is rotated counterclockwise; The power on the blade a of acting on makes rotor, revolve courage turns clockwise, and this moment is owing to exist blade a work area greater than blade b work area, so its effect rotor, the resultant moment of force of revolving courage are clockwise moment, rotor, revolve courage and turns clockwise outside output torque.Illustrate 2 positions and continue the work done position for work done cavity A.Fig. 3 position is a starting point to illustrate 1 position, and work done cavity A has turned over 170 °-175 °, this moment blade a work area near the work area of blade b, externally work done has approached zero, so the time be the exhaust starting point of work done cavity A.Fig. 2, the relief opening of work done cavity A (25) is connected with cylinder block relief opening (2), and the waste gas among the work done cavity A is discharged cavity, and this stage is the nature exhaust phase.Toxic emission in work done cavity A is to normal pressure, and the inertia one-way valve (11) that revolves on the courage partition wall is opened under the pressed gas effect of compression chamber A ' automatically, and working gas enters work done cavity A from inertia one-way valve, realizes uniflow scavenging.4 positions shown in Figure 4, work done cavity A relief opening this moment (2) is closed, and compression chamber A ' continues to provide working gas to work done cavity A.When work done cavity A walked to diagram 1 position, spark plug was lighted a fire again, carries out next work cycle.Other each work done cavity will repeat the working procedure of work done cavity A.Fig. 5, with the corresponding compression chamber A ' of work done cavity A be example, set forth the working procedure of compression cylinder.Illustrate 1 position, compression chamber A ' suction port (23) is connected the beginning air inlet with cylinder block suction port (22), and the inertia one-way valve that revolves on the courage partition wall is closed under the effect of centrifugal inertia force.Illustrate 2 positions, for compression chamber A ' continues the air inlet position.Illustrate 3 positions, compression chamber A ' has reached maximum volume, is starting point with position 1, and air inlet angle reaches 180 °, and the suction port of the suction port of compression chamber A ' and cylinder block disconnects at this moment, i.e. air inlet stops.Illustrate 4 positions, compression chamber A ' carries out compression process, and when cavity pressure rises to when being enough to push inertia one-way valve open, then compression chamber A ' beginning provides working gas to work done cavity A.Walk in the position process of diagram 1 at compression chamber A ', because the relation of phase difference, compression chamber A ' will carry previous phase difference than work done cavity A and arrive the minimum volume point, be that compression chamber A ' carries previous phase difference available working gas is all imported work done cavity A, the pressure of compression chamber A ' disappears automatically then, inertia one-way valve is closed under the effect of centrifugal inertia force automatically, and work done cavity A realizes airtight.Compression chamber A ' is rotated further by diagram 1 position, carries out next work cycle.Other each compression chamber ' with the working procedure of repeated compression chamber A '.

Reference " Principles of Internal-Combustion Engine " Beijing Chinese agriculture publishing house, version in 1988, Jiang Deming chief editor." internal combustion engine theory and design " Beijing National Defense Industry Press, version in 1975, Jilin Industry University internal-combustion engine teaching and research room compiles.Publishing house of " Principles of Internal-Combustion Engine " HUST, the Liu Yongchang chief editor.

Claims (21)

1. the work-doing cylinder that the present invention has by rotor shaft (3), rotor (4), blade (9), blade bearing pin (10), revolves courage lid (16), revolves courage (8), Stamping Steel Ribbon (7,13,14) is formed and by rotor shaft (3), rotor (24), blade (9), blade bearing pin (10), revolve the compression cylinder that courage covers (17), revolves courage (8), Stamping Steel Ribbon (7,13,14) is formed, place simultaneously in the cylinder block (6); Revolve the courage internal partition wall and be equipped with and the inertia one-way valve (11) of compression chamber, be used to be communicated with work-doing cylinder and compression cylinder with quantity; Outside compression cylinder one side cylinder block, rotor shaft (3) and revolve courage lid (17) spindle nose respectively adorn a gear (19,20) and simultaneously be loaded on frame support (21) on gear (26) be meshed.

2. according to claim 1 described motor, it is characterized in that rotor (4,24) axis is e with revolving courage (8) eccentric axis, and e equals to revolve the 1/6-1/15 of courage radius.

3. according to claim 1 described motor, it is characterized in that blade (9) quantity 〉=4.

4. according to claim 1 described motor, it is characterized in that revolving courage lid (16,17) and have inlet and outlet mouth with quantity such as work done cavity.

5. according to claim 1 described motor, it is characterized in that inertia one-way valve (11) axis and revolve 10 °-30 ° of courage (8) axis angles.

6. according to claim 1 described motor, it is characterized in that 10 °-60 ° of compression chamber and work done cavity angular phase differences.

7. according to claim 1 described motor, it is characterized in that wedge shape delta seal bar (7,13, the 14) angle of wedge is 15 °-45 °.

8. according to claim 1 described motor, it is characterized in that synchromesh gear (19,20,26) is a cylindric spiral gear.

9. according to claim 1 described motor, it is characterized in that synchromesh gear (19,20,26) is the cylinder herringbone gear.

10. according to claim 1 described motor, it is characterized in that relief opening (25) is a relief opening at exhaust phase, the compression work done stage is the firing chamber.

11. according to claim 1 described motor, it is characterized in that blade bearing pin (10) has elongated slot, blade (9) can slide in groove.

12., it is characterized in that blade bearing pin (10) and rotor (4,24) are for movingly according to claim 1 described motor.

13., it is characterized in that power rotor (4), compression rotor (24) coaxial line, and be installed on simultaneously on the rotor shaft (3) according to claim 1 described motor.

14., it is characterized in that the cylinder head of blade (9) and revolve courage (8) for movingly according to claim 1 described motor.

15. according to claim 1,8 described motors, it is characterized in that synchromesh gear (19,20) and rotor shaft (3), revolve courage lid (17) and be connected for key.

16. according to claim 1,9 described motors, it is characterized in that synchromesh gear (19,20) and rotor shaft (3), revolve courage lid (17) and be connected for key.

17., it is characterized in that power rotor (4), compression rotor (24) are connected for key with rotor shaft (3) according to claim 1,13 described motors.

18., it is characterized in that utilizing the compression cylinder working principle can make oil motor according to claim 1 described motor.

19., it is characterized in that utilizing the compression cylinder working principle can make compressor according to claim 1 described motor.

20., it is characterized in that utilizing the compression cylinder working principle can make oil pump according to claim 1 described motor.

21., it is characterized in that utilizing the compression cylinder working principle can make vacuum pump according to claim 1 described motor.

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