CN1237678A

CN1237678A - Piston rotor engine

Info

Publication number: CN1237678A
Application number: CN 98112499
Authority: CN
Inventors: 贺坤山
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-03
Filing date: 1998-06-03
Publication date: 1999-12-08

Abstract

The piston type rotor engine is characterized by that the axis of the cylinder is eccentrically set on the rotor, and piston can be reciprocally moved in the cylinder, and the acting force of the piston can be transferred to rotor by means of swinging-pushing rod, and make it rotate to apply work. Said invention can be designed into multi-cylinder two-stroke or four-stroke engine, its structure is simple, has no crank linkage mechanism, and can effectively convert the acting force of the piston into effective torque, at the same time the acting fore arm is enlarged, the torque also is increased.

Description

Engine with piston-type rotor

The invention belongs to a kind of rotary engine, particularly a kind of engine with piston-type rotor.

Existing reciprocating engine becomes rotatablely moving of line shaft by crankshaft ﹠ connecting with the to-and-fro motion of piston.This structural type and motion thereof require to have determined that following physical dimension relation is arranged: piston stroke (stroke) equals twice crank throw R and crank throw approximates cylinder radius greatly.And the running torque M that has gas to expand piston action power P is produced _i=PRsin (α _i+ β _i)/cos β _i(referring to Fig. 1).β wherein _iThe angle maximum can not approximate 25 ° greater than arctg0.5, and value is less than 20 ° usually.(α in the inflation process of its work cycle _i+ β _i) then in 0 °～180 ° scopes, change, as (α _i+ β _i) when equaling 0 °, 180 °, torque M is 0 value, as (α _i+ β _i) when 0 °, 180 ° near zones, the torque M value is very little, therefore, the active force that expanding gas pressure produces is not changed into effective torque by efficient the utilization.In addition, especially for powerful multi-cylinder piston engine, the more apparent bulky complex of its structure.

Task of the present invention is the novel piston formula rotary engine of a kind of crankshaft-free connection rod of proposition mechanism.

Technological scheme of the present invention is: engine with piston-type rotor contains stator case 1 and rotor 2 two-part.Stator case surrounds the rotor sealing wherein, it is characterized in that piston 3, cylinder 4 axis runout rotor rotating centers, and outwards fixation is on rotor 2 for cylinder head, and deciding has the inlet and outlet duct on the shell, controlled in good time and cylinder head connection; Wrist pin 5 passes the pin-and-hole on the piston and the straight line conduit 6 of cylinder wall upper edge cylinder-bore axis direction, two ends are stretched into and are arranged on the closed ring track of deciding on the internal surface of shell two ends 7, this track is determined by the movement locus at wrist pin center, should be able to adapt to piston and follow rotor when rotating a circle, the motion requirement that in cylinder, makes a round trip again, it can be the garden annular of relative rotating center off-centre or near the garden ring track; Push rod 8 one ends connect with wrist pin 5 hinges, the other end is a free end, be provided with pivot pin 9, pivot pin 9 rests on rotor, and to get fixed regional the preceding paragraph corresponding one by one with the piston stroke each point, and initial point, the corresponding respectively piston of terminal point are in the regulation curve conduit 10 of upper and lower dead center position, when push rod one end is followed wrist pin motion, 9 of pivot pins move along epitrochanterian regulation curve conduit 10 on another free end.Push rod self is done adaptability swing in promptly working, and guarantees effectively piston action power to be delivered on the rotor all the time, and similar torque M=PR is arranged _iSin (α _i+ β _i)/cos β _i(referring to Fig. 2).Push rod 8 can be installed in the wrist pin middle part in the cylinder, also can be installed in cylinder outer piston pin two end part.

Engine with piston-type rotor of the present invention can rotate a circle or finishes air-breathing, compression, the work done of expanding, exhaust work cyclic process two weeks equally by rotor, is designed to two-stroke or four-stroke piston rotary engine.

Engine with piston-type rotor should be designed to the epitrochanterian multicylinder engine of being distributed in of cylinder number n 〉=2, and so superimposed string of n Cylinder engine can be dressed up the more powerful engine with piston-type rotor unit of power.

The present invention has following good effect: owing to piston, cylinder depart from the rotating center setting, substitute crankshaft ﹠ connecting with push rod, thereby the restriction of the strictness between the stroke, rotary arm (being crank throw originally) cylinder diameter is broken, make the design adjustment of volume of cylinder requirement and piston stroke become conveniently freely, the adjustment of the throw of eccentric (or top dead center cylinder established angle θ) that can install on rotor by cylinder diameter and cylinder realizes, and in the inflation process of work cycle, the arm of force R of push rod active force _iCan be greater than the crank throw R of corresponding bent axle machine, the maximum angle β of while push rod and piston axis does not exist can not be greater than 25 ° restriction, can choose in the larger context, but the increase of β angle can cause the corresponding increase of side pressure, surface friction drag increases between piston and cylinder thereby make, so the β angle should not be chosen excessive.Even the β angle still remains in the scope that is not more than 20 °, and (α _i+ β _i) very easy being controlled in haveing suffered work cycle in 50 °～the scope more than 60 ° in angle change sin (α in the promptly whole expansion one work done process _i+ β _i) there is not 0 value point, can keep up to value more than 0.8.Thereby make gas tension change effective torque more efficiently into.Simultaneously, acting force arm strengthens the corresponding increasing of torque, and for the motor that slows down and use, the loss of retarder reduces, design simplification.In addition, for multicylinder engine, each cylinder can shared one packs into, vent systems and ignition system, thereby the structure of whole motor is more simplified.

The invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is existing reciprocating engine theory structure schematic representation.Fig. 2 is the theory structure sketch that the cross-sectional tangent plane of engine with piston-type rotor of the present invention is showed.Fig. 3 is an A-A sectional view among Fig. 2, and Fig. 4 is engine with piston-type rotor one an example structure sketch, and Fig. 5, Fig. 6 are eccentric special bearing structural drawing, and Fig. 7, Fig. 8 are respectively the right elevation of removing behind end cap right part and the air chest shell.

Embodiment illustrated in fig. 4 is a twin-tub four-stroke piston rotary engine, off-centre is installed with a kind of special rolling bearing 11 on the shell interior edge face deciding, this rolling bearing outer shroud row number is corresponding with cylinder number n, illustrated example is a twin-tub, so two exclusive rings are arranged, have the ear seat on the outer shroud, the hole connects with the termination of the wrist pin 5 of corresponding cylinder on the ear seat.Extraordinary rolling bearing structure is seen Fig. 5, Fig. 6.Inlet and outlet duct 12,13 is arranged on the shell, inlet and outlet door 14,15 and spark plug 16, oil tank 17, right side stator case end cap 18, and be linked with air chest 19, distribution transfer gear train 20 and inlet and outlet cam 21,22 etc. are arranged in the air chest.Four stroke engine is finished four working procedure in rotor changes two weeks, 720 ° of scopes, can roughly arrange as follows: be air-breathing section in crossing 150 ° of scopes of upper dead center, the compression section is 200 °, and the work done section that expands is 210 °, and remaining section is an exhaust stroke.Simultaneously, main shaft is by transfer gear train 20 transmission inlet and outlet cams 21,22 in the air chest, and control inlet and outlet door is opened in good time and closed according to the requirement of work cycle.

Claims

1, a kind of engine with piston-type rotor, contain stator case (1), rotor (2), cylinder (4), piston (3), it is characterized in that: piston, the outside eccentric axis of cylinder cylinder head ground fixation is on rotor, what be provided with on the shell advances, the vent may command in time is communicated with cylinder head, wrist pin (5) passes the pin-and-hole on the piston and the straight line conduit (6) of cylinder wall upper edge axial direction, two ends are stretched into to be arranged on and are decided to adapt on the internal surface of shell two ends in the closed ring track (7) of wrist pin movement locus requirement, push rod (8) one ends and wrist pin (5) hinge connection, the pivot pin of the other end (9) then freely rests on to be got on the rotor in the regulation curve conduit (10) of deciding the zone.

2, by the described engine with piston-type rotor of claim 1, it is characterized in that motor is to be evenly equipped with cylinder number n on the rotor to be equal to or greater than 2 multicylinder engine.

3,, it is characterized in that the closed ring track of deciding on the shell both ends of the surface (7) is eccentric garden annular channel by claim 1 or 2 described engine with piston-type rotor.

4, by the described engine with piston-type rotor of claim 3, it is characterized in that deciding eccentric garden annular channel (7) on the shell end face is installed in the extraordinary rolling bearing of deciding on the shell interior edge face by off-centre and constitutes, described extraordinary rolling bearing is to have the ear seat on the outer shroud, it is corresponding that outer shroud row number and rotor upper cylinder are counted n, and the bearing that the exclusive ring of n is arranged of upper ear seat hole connection is arranged with corresponding outer shroud in the termination of the wrist pin of each cylinder (5).