CN1240881A

CN1240881A - Two-stroke engine with aerated movable combustion chamber

Info

Publication number: CN1240881A
Application number: CN99105421A
Authority: CN
Inventors: 金闽伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-06
Filing date: 1999-04-06
Publication date: 2000-01-12
Anticipated expiration: 2019-04-06
Also published as: CN1084431C

Abstract

A new-type two-stroke engine is composed of engine body, air intake and exhaust mechanism, and air-distributing compressor. There are not exhaust and scavenge ports on the wall of working cylinder. The movable air chamber and the exhaust gate, which can do long-distance up-down telescopic movement or be stationary are arranged on top cover of working cylinder. They are controlled by different cam-type line-like sloted tracks via own hanging rods and wheels, so their movement rules are different. As a result, the working piston and air-distributing compressor are matched to perform all the jobs in one cycle. Its advantages are high power, thorough exhaust, sufficient air intake, and less environmental pollution of waste gas.

Description

Two-stroke engine with aerated movable combustion chamber

The present invention relates to two stroke engine design and manufacturing technology field.

Existing two stroke engine mainly contains two kinds of two-stroke gasoline engine and two stroke diesel engines.The gas compressor that a kind of pump gas condition is restricted, pump gas efficient is relatively poor that the scavenging method of two-stroke gasoline engine normally utilizes the piston back side and crankcase to form carries out scavenging.The major defect that it exists has: (1) bent axle can't be used integral one-piece crankshaft, can only use split type bent axle, so rigidity is poor, and the reliability of motor is affected.(2) poor lubrication.The lubricating method of each major part is that lubricant oil is mixed in the gasoline in the crankcase, utilizes the infiltration of mist of oil to be lubricated.There is the defective of three aspects in this lubricating method, and the first sucks the mist of oil of crankcase, owing to contain a large amount of fuel oils, it waters down and polluted lubricant oil, and lubricants performance is descended, and the frictional loss of motor increases, the working life of having reduced motor; Its two be enter the mist lubrication oil of firing chamber can't perfect combustion, quicken the formation of carbon distribution and burnt shape material, diminish the working life of motor; It three is that imperfect combustion parts of lubricating oil is discharged in the atmosphere together with waste gas, has not only increased exhaust pollution but also wasted lubricant oil.(3) fuel consumption rate height.When with the inflammable mixture scavenging, some incoming mixture is discharged into atmosphere with waste gas inevitably, and promptly so-called fuel oil short-circuit loss descends effective engine power, and fuel consume increases.Simultaneously,, produce a large amount of harmful gas and material, the exhaust index of motor is worsened owing to inflammable mixture produces partial combustion with contacting of high temperature, high pressure exhaust gas.(4) be difficult to develop the motor of big cylinder diameter, multi cylinder, high-power type.(5) ventilation is not thorough, seriously polluted.(6) poor performance when low speed, idling.Or the like.And the scavenging method of two stroke diesel engine normally adopts independent gas compressor (mostly being Roots pump greatly) to come scavenging.The major defect that it exists has: (1) is if adopt Roots pump pump gas noise big.(2) startability and acceleration are poor.(3) exhaust pollution is serious.Or the like.Except the above shortcoming that exists separately, also there are following three aspect shortcomings in two-stroke gasoline engine and two stroke diesel engine jointly: on the casing wall of (1) cylinder, have relief opening and scavenging port, or only have scavenging port, effective expansion space stroke of piston is shortened.Therefore their power be same discharge capacity, with about 1.5 times of rotating speed four stroke engine.(2) in different operating modes, the residual gas amount in the cylinder has bigger difference.This shortcoming all causes bigger negative effect to the performance of motor, discharging etc.(also there is this shortcoming in four stroke engine.) (3) spark plug or oil sprayer expose in the firing chamber, is subjected to washing away and ablating of high temperature, pressurized gas, not only shortened the working life of this part, and occur carbon distribution easily, stop up, catch fire, faults such as pre-ignition, incandescent ignition.(also there is this shortcoming in four stroke engine.) current, it is very outstanding owing to pollution problem that environmental pollution, lack of energy have become common problem, the especially two-stroke gasoline engine of paying close attention to of whole mankind institute, has been subjected to serious challenge, or even the censure of sternly going through.According to the data introduction, some developed countries have give stricted orders this kind of forbidding motor.(referring to first page in Chinese patent CN1146528A specification.)

Purpose of the present invention is exactly in order to solve more up hill and dale or to improve the existing various shortcomings of above-mentioned two stroke engine with not enough, provide a kind of have characteristics such as fuel consume is low, exhaust emission pollution is few, exhaust is thorough, air inlet is sufficient, power is big suit be designed to petrol engine and diesel engine and can be used for the two stroke engine of automobile, motorcycle or general dynamic machinery.

The present invention is mainly by engine body; Inlet and outlet mechanism; Distribution gas compressor three parts are formed.Its main technical schemes has: 1, do not establish relief opening and scavenging port on the casing wall of clutch release slave cylinder (7).2, on the cylinder head on clutch release slave cylinder top (17), be provided with and make upper and lower motion significantly and actionless movable air chamber circle outer wall (39) and movable air chamber circle inwall (40), and one also can be done upper and lower motion and actionless exhaust valve (53) significantly.Movable air chamber circle outer wall (39) and movable air chamber circle inwall (40) can be formed a circular movable air chamber (13) jointly.Exhaust valve (53) is in the middle part of this movable air chamber.3, movable air chamber circle outer wall (39) it can on the guiding circle wall (84) of cylinder head (17), do upper and lower motion; The diameter length of its diameter length and working piston (10) about equally; Its lower end has (64) at the bottom of the wall that fuses with it, is provided with a conical surface (66) at the bottom of this wall; Its upper end has two to fuse with it and symmetrical peg (43), and the top of two pegs is fixed with two change gears (49); Two corresponding pilot holes (83) that this two peg (43) passes on the cylinder head stretch out cylinder head end face (80), and are placed in respectively in two corresponding guiding grooves (48) (referring to Fig. 1,2,17); Two change gears (49) on it then are placed in respectively in two corresponding grooves grooved rails (M) on two big cams (21); The diameter length of change gear and the width of grooved rail are about equally.4, movable air chamber circle inwall (40) (referring to Fig. 3,14), it is placed in the O type guiding groove (42) on the cylinder head, can do upper and lower motion; Its upper end is circular planes (76); Its lower end is provided with inside and outside two conical surfaces (77,78), and its male cone (strobilus masculinus) (78) can fit with the wall base cone face (66) of movable air chamber circle outer wall, and its inner conical surface (77) can fit with lower half portion of the exhaust valve conical surface (74).Upper and lower motion not only can be done in its (40), also can do slow rotatablely moving, eliminate the conical surface (66) and the conical surface (78) with this, and lower half portion of the conical surface (74) and the carbon distribution on the conical surface (77), make above each corresponding conical surface when fitting, can keep good sealing property.5, have two to fuse with it and symmetrical peg (41) on the exhaust valve (53), they are placed in two corresponding guide pipes (82) lining in the cylinder head respectively, can do upper and lower motion; The middle part of this two peg, installing two symmetrical projections (50), this two projection in cylinder head (referring to Fig. 2,3,8,10,21) passes two corresponding slideways (45) and stretches in the O type guiding groove (42), and pressing a ring plate (44) jointly, this ring plate is then pressing a spiral compression spring (51), and this spring is pressing the circular planes (76) of movable air chamber circle inwall (40) upper end again; This two projection (50) can be followed peg (41) and do synchronous upper and lower motion in two corresponding slideways (45), and is responsible for the upper and lower motion of control activity air chamber circle inwall (40) thus together jointly with lower half portion of the exhaust valve conical surface (74); Cylinder head end face (80) is then stretched out on the top of two pegs of exhaust valve (41), and two slide blocks (73) that are installed in two peg tops are placed in respectively in two corresponding guiding grooves (24); Two change gears (46) that are installed in two peg tops then are placed in respectively in two corresponding grooves grooved rails (N) on two big cams (21); The diameter length of change gear and the width of grooved rail are about equally.6, on the cylinder head end face (80), be provided with their supports (26) by separately of four guiding grooves (24,48) (referring to Fig. 1,2) and be packed on the end face (80) of cylinder head; The inside two on guiding groove (24) be responsible for two slide blocks (73) on two pegs of control exhaust valve, force it to make upper and lower motion and transfixion; Two guiding grooves (48) of outside then are responsible for two pegs (43) of control activity air chamber circle outer wall, force it to make upper and lower motion and transfixion.This two peg (43) is owing to itself have sliding surface (70) so no longer establish slide block.7, a clutch release slave cylinder (7) configuration two big cams (21); Big cam is packed in big cam axle (22) and goes up (referring to Fig. 1,2); This beam warp bearing support (23) and bearing bracket (25) are packed on the end face (80) of cylinder head; Follower (47) on the big cam axle (22) links to each other with driving wheel (37) on the power crankshaft (5) through toothed timing belt or chain (38); The diameter of two wheels (47,37) or the number of teeth all equate, so the two rotating speed of big cam axle (22) and power crankshaft (5) is equal, but the corner of the two exists phase relationship.8, on four sides altogether of two big cams (21) (referring to Fig. 1,2), be provided with four groove grooved rails (M, N) altogether, the track of these four grooved rails is cam type wire track, and their the basic circle center of circle all with the axle center overlaid of big cam wheel shaft (22); Two grooved rails (M), the track of the two is identical, two grooved rails (N) in addition, the track of the two is also identical, but grooved rail (M) and grooved rail (N), the track of the two is incomplete same, exists some differences.Therefore, when two big cams (21) rotate, be placed in four change gears (49,46) in its four grooved rails, just in track separately, rotate (also can be designed to slide).Because the leading role of four guiding grooves (48,49) forces the wheel shaft (68,72) of four change gears and corresponding four pegs (43,41) thereof only to make upper and lower motion and transfixion.But because the difference of track, peg (43) and the two upper and lower motion of peg (41) and the actionless moment, time, speed etc. there are differences.Can learn thus, movable air chamber circle outer wall (39) is with exhaust valve (53) and be subjected to the indirect movable air chamber circle inwall of controlling (40), their the upper and lower motions and the actionless moment, time, speed etc. also there are differences, and their distances to each other also change in proper order.9, four change gears (49,46) separately and be equipped with rubber ring (69,71) (referring to Fig. 4,6,8,11) between the wheel shaft separately (68,72).When movable air chamber circle outer wall (39) and exhaust valve (53) the two when doing upper and lower to-and-fro motion, this rubber ring (69,71) can play the effect of buffering, and when the temperature in firing chamber (54) during colder or partial heat (during the heat expansion shrinkage), the lower half portion that can make the conical surface (66) and the conical surface (78), the conical surface (74) and upper half part of the conical surface (77), the conical surface (74) and the exhaust valve seat conical surface (85) can both have good sealing property when applying.10, cylinder head (17) links to each other with cylinder block (9) by cylinder cap screw (16).Be provided with several inlet holes (52) (referring to Fig. 3,17) in the cylinder head, a lower end configuration intake valve (55) of each inlet hole along circumferential arrangement; Intake valve is provided with the conical surface (79) (referring to Figure 15,16), this conical surface can with the suction valve cone conical surface (88) fit (referring to Figure 20); Intake valve (55) is provided with several fence (57) that can play guiding and ventilation effect along circumferential arrangement; The center of intake valve upper-end surface is provided with link (56), this link link to each other with an end of steel wire (58) (referring to Fig. 3); The other end of this steel wire links to each other with an end of spiral stretching spring (59); The other end of this spring links to each other with the middle part of cross bar (60); This cross bar is made the diameter shape and is arranged on the top of inlet hole (52), the two ends of cross bar are placed in cylinder head end face (80) and go up in the corresponding little groove (61).On (referring to Fig. 3,17) 11, the cylinder head end face (80), be provided with air inlet air guide sleeve (19) (referring to Fig. 1,2).This cover only covers several inlet holes (52), does not cover other hole; Suction tude (27) on this cover is joined with the gas tube (28) on the distribution gas compressor; From the mixed gas or the pure air of distribution gas compressor, the air inlet air guide sleeve (19) of flowing through enters each inlet hole (52) again.12, in the cylinder head (17), on the residing circumference of inlet hole (52) (referring to Figure 17), symmetric arrangement two spark plugs (or oil sprayer) mounting holes (18).This hole is two of symmetric arrangement why, mainly are in order to make the stressed balance more of movable air chamber circle outer wall parts such as (39).If do not consider this equilibrium problem, this hole can only be arranged one.13, because the structure of cylinder head (17) is complicated, and layout is made each part of upper and lower motion within it, need solve lubricated and cooling problem, so the cooling jacket (11) in the cylinder block (9) does not feed in the cylinder head (17) type of cooling of cylinder head employing oil cooling.Its cold oil also is a lubricant oil simultaneously.Its oil circuit is such layout: from the lubricant oil of oil sump (1), go up several oil inlet hole (81) inflow activity air chamber circle inwall (40) residing O type guiding grooves of arranging along a small circumference (42) interior (referring to Figure 18) of (referring to Figure 17) from cylinder head end face (80); Then flow to several and be clipped in narrow oil duct (86) (referring to Figure 19,21) between each inlet hole (52) (comprising spark plug or mounting hole of oil sprayer), just enter circular unhurried current chamber (14) (referring to Fig. 1); Then in being arranged in cylinder block (9) (or several) oil road (12) again flows into the outer oil outlet tube (6) of cylinder block; The crankcase (2) of flowing through again at last enters oil sump (1).Circulation so constantly.This oil circuit can not got in touch with crankcase (2) and oil sump (1) yet, can establish an independently circulatory system in addition.For avoiding the lubricated and cold oil on the cylinder head to flow into the firing chamber, several O RunddichtringOs (63) (referring to Fig. 3) can be set.Lubricated and cooling problem on other position owing to do not belong to problem to be solved by this invention, repeats no more.14, distribution gas compressor (36) can adopt reciprocating compressor.Its arrangement mainly contains two kinds.A kind of is it as a gas compressor independently, be installed in a side (referring to Fig. 1) of motor, its kind of drive is (referring to Figure 24), and the two is meshed the driving gear (90) on the driven gear (89) on the distribution gas compressor bent axle (4) and the power crankshaft (5) and transmission.There is phase relationship in the two corner of distribution gas compressor bent axle (4) and power crankshaft (5), and the rotating speed of the two then becomes the multiple relation.Promptly when the two rotating speed of distribution gas compressor bent axle and power crankshaft equated, a gas distribution piston (35) can only be a working piston (10) distribution; When the rotating speed of distribution gas compressor bent axle was the twice of power crankshaft rotating speed, a gas distribution piston can be two working piston distributions, but two pairing two cranks of working piston, its crank angle must be 180 °; When the rotating speed of distribution gas compressor bent axle was three times of power crankshaft rotating speed, a gas distribution piston can be three working piston distributions, but three pairing three cranks of working piston, its crank angle must be 120 °.All the other by that analogy.When a gas distribution piston only was a working piston distribution, the crank angle phase relationship of the two was that when working piston was in lower dead center, the pairing crank of gas distribution piston was fulfiled 90 ° of corners ahead of schedule than the pairing crank of working piston; When a gas distribution piston was two working piston distributions, the crank angle phase relationship of the two was that when one of them working piston in two working pistons was in lower dead center, gas distribution piston also was on the lower dead center; When a gas distribution piston is three working piston distributions, the crank angle phase relationship of the two is, when one of them working piston in three working pistons was in lower dead center, the pairing crank of gas distribution piston was than being in the pairing crank of that working piston on the lower dead center 90 ° of corners that lag.All the other by that analogy.The another kind of arrangement of distribution gas compressor, be allow distribution gas compressor and motor the two combine together.The connecting rod that is gas distribution piston and working piston by separately is contained on the power crankshaft jointly, and makes the crank angle of distribution gas compressor be ahead of 90 ° of corners of power crank.This kind fit of distribution gas compressor, because the two movement velocity of gas distribution piston and working piston equates, so a gas distribution piston can only be a working piston distribution.15, the discharge capacity of gas distribution piston can 25%-30% greater than the working piston discharge capacity about so that the volumetric efficiency of clutch release slave cylinder (7) can realize greater than 1 or equal 1.16, when engine for combusting gasoline and employing Carburetor, Carburetor has two kinds of arrangements (referring to Fig. 1).A kind of is first Carburetor (33) that keeps on the distribution compressor air inlet machine pipe (34), cancels second Carburetor (29) on the gas tube (28) simultaneously, and ram's horns (31) and diverter valve (30) on the cancellation gas tube.The effect of this arrangement is to make mixed gas obtain twice mixing in distribution compressor housing and clutch release slave cylinder (7), and mixed gas mixes more evenly.Another kind is second Carburetor (29) that keeps on the gas tube (28), and keeps ram's horns (31) and diverter valve (30) on the gas tube, cancels first Carburetor (33) on the distribution compressor air inlet machine pipe (34) simultaneously.The effect of this arrangement is, when motor is in low-load work, can open diverter valve (30), the part air that allows the distribution gas compressor extrude enters atmosphere through ram's horns (31), promptly allow the distribution gas compressor be in half unloading condition, reduce the power loss of motor.The diverter valve (30) of this moment just can become the weight adjustment device of motor.In motor adopts the gasoline cylinder, when spraying outside the cylinder, then cancel first Carburetor (33) and second Carburetor (29), but can keep ram's horns (31) and diverter valve (30), it acts on as previously mentioned, also is the effect of playing off-load.When engine for combusting diesel oil, then cancel first Carburetor (33) and second Carburetor (29), and cancellation ram's horns (31) and diverter valve (30).Regulate because the Load Regulation of diesel engine is a matter, promptly only change fuel injection quantity and do not change air inflow.

The present invention compared with prior art, have following significant advantage: 1, power is big.Owing to do not establish relief opening and scavenging port on the casing wall of clutch release slave cylinder (7), so working piston work done effective travel is long.Its power is with the twice of rotating speed with the discharge capacity four stroke engine.2, exhaust is thorough.Because the end face of firing chamber (54) is movably, and the volume of firing chamber (54) can approach zero (referring to Figure 29) being contracted to sometime of exhaust process, and therefore, the waste gas in the clutch release slave cylinder (7) can be near 100% ground emptying.And motor is in various operating modes, and each circuit residual gas amount of clutch release slave cylinder (7) all about equally.This characteristic improves the performance of motor and reduces discharging etc. improving combustion position, and is all very favourable.3, air inlet abundance.Because therefore the discharge capacity of gas distribution piston (35) can will improve the charge of clutch release slave cylinder (7) greater than the discharge capacity of working piston (10), increases the power of motor, becomes easily and simply.4, when the mixed gas in the movable air chamber (13) or pure air enter clutch release slave cylinder (7), can produce strong cylinder warp-wise eddy current.This eddy current is similar to extruding swirl of the prior art, but the time that produces more early, and the time that continues is also just longer.This characteristic improves the performance of motor and reduces discharging etc. improving combustion position, and is all very favourable.5, spark plug or oil sprayer are arranged in the movable air chamber (13), after its igniting or oil spout, are hidden by the upper-end surface (67) at the bottom of the movable air chamber circle outer wall wall immediately, make it not be subjected to the ablation of hot flame and wash away.Not only improved the working life of this part thus, but also can reduce pinking, pre-ignition significantly, catch fire, fault such as incandescent ignition.6, available integral one-piece crankshaft of power crankshaft (5) and bearing shell formula crankshaft bearing, lubricating condition is good.7, each part in firing chamber (54) is heated evenly.And the compact structure of firing chamber.8, compare with the four stroke engine with power, weight obviously alleviates.9, the gasoline cylinder is interior in order to implement, the outer good condition of having created of spraying of cylinder.Because the residual gas amount in the clutch release slave cylinder (7) in various operating modes, is all not only lacked but also about equally, no matter be to adopt mechanical control method or electronic control mode therefore, all can more easily accomplish accurate more quantitative injection.10, created good condition for implementing lean combustion.Lean combustion is the direction of vehicle gasoline engine technical development.Its main advantage is energy-conservation and reduces discharging.Realize lean combustion, must possess many-sided condition, wherein most critical condition is that rate of burning is wanted height, be cylinder at this section of air inlet, compression, ignition in the period or at least in this short time before and after igniting, must there be strong eddy current to exist, be beneficial to promote the quick propagation and the accelerated combustion process (consulting " automotive engineering dictionary " 629-631 page or leaf that People's Transportation Press publishes) of flame.And the present invention possesses this crucial technical specifications fully.

Can learn that by above advantage the present invention had both compiled each major advantage of existing two-stroke and four stroke engine, each major defect of having rejected existing two-stroke and four stroke engine again simultaneously.Therefore, its combination property obviously is superior.

The present invention is described in detail by embodiment below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present invention.(bent axle is horizontal.When working piston is in the half stroke of moving approximately.)

Fig. 2 is a structural representation of the present invention.(bent axle is vertical.The parts of fine finding slightly sees enlarged view Fig. 3 for details.)

Fig. 3 is A-A and the B-B among Fig. 2, the enlarged view of part between the two sections.(when working piston is in top dead center.)

Fig. 4 is the overall structure schematic representation of movable air chamber circle outer wall (39).

Fig. 5 is the D-D cross-sectional view among Fig. 4.

Fig. 6 is one of them a plan view of peg among Fig. 4 and change gear.

Fig. 7 is the plan view of Fig. 6.

Fig. 8 is the overall structure schematic representation of exhaust valve (53).

Fig. 9 is the H-H cross-sectional view among Fig. 8.

Figure 10 is the J-J cross-sectional view among Fig. 8.

Figure 11 is one of them a plan view of peg and change gear among Fig. 8.

Figure 12 is the plan view of Figure 11.

Figure 13 is the plan view of movable air chamber circle inwall (40).

Figure 14 is the K-K cross-sectional view among Figure 13.

Figure 15 is the plan view of intake valve (55).

Figure 16 is the plan view of Figure 15.

Figure 17 is the plan view of cylinder head (17) end face.(the screw mounting hole of cylinder cap and other part slightly.)

Figure 18 is the P-P cross-sectional view among Figure 17.

Figure 19 is the Q-Q cross-sectional view among Figure 17.

Figure 20 is the R-R cross-sectional view among Figure 17.

Figure 21 is the S-S cross-sectional view among Figure 20.

I figure among Figure 22 is groove scouring machine (M) the track schematic representation among the embodiment; II figure is groove grooved rail (N) the track schematic representation among the embodiment.

Figure 23 is that I figure and the II among Figure 22 schemes the two equitant schematic representation.

Figure 24 is the two the schematic representation of one of the kind of drive of motor and distribution gas compressor, also is simultaneously the relevant phase place schematic representation of a gas distribution piston when being two working piston distributions.

Figure 25, Figure 26, Figure 27, Figure 28, Figure 29, Figure 30, Figure 31, Figure 32 are embodiment's fundamental diagrams.

Tag content: (1) oil sump, (2) crankcase, (3) crank of power crankshaft, (4) distribution gas compressor bent axle, (5) power crankshaft, (6) oil outlet tube, (7) clutch release slave cylinder, (8) work connecting rod, (9) cylinder block, (10) working piston, (11) cooling jacket, (12) oil road, (13) movable air chamber, (14) unhurried current chamber, (15) exhaust port, (16) cylinder cap screw, (17) cylinder head, (18) spark plug or mounting hole of oil sprayer, (19) air inlet air guide sleeve, (20) outlet pipe, (21) big cam, (22) big cam axle, (23) bearing support, (24) guiding groove of exhaust valve peg and change gear, (25) bearing bracket, (26) guiding groove support, (27) suction tude, (28) gas tube, (29) second Carburetors, (30) diverter valve, (31) ram's horns, (32) air-strainer, (33) first Carburetors, (34) distribution compressor air inlet machine pipe, (35) gas distribution piston, (36) distribution gas compressor, (37) driving wheel, (38) toothed timing belt or chain, (39) movable air chamber circle outer wall, (40) movable air chamber circle inwall, (41) exhaust valve peg, (42) O type guiding groove, (43) movable air chamber circle outer wall peg, (44) ring plate, the slideway of the projection on (45) exhaust valve peg, the change gear on (46) exhaust valve peg, (47) follower, (48) guiding groove of movable air chamber circle outer wall peg and change gear, the change gear on (49) movable air chamber circle outer wall peg, the projection on (50) exhaust valve peg, (51) spiral compression spring, (52) inlet hole, (53) exhaust valve, (54) firing chamber, (55) intake valve, (56) link, (57) intake valve guiding fence, (58) steel wire, (59) spiral stretching spring, (60) cross bar, (61) little groove, the joint of (62) movable air chamber circle outer wall and its peg, (63) O RunddichtringO, (64) at the bottom of the movable air chamber circle outer wall wall, the lower end surface at the bottom of (65) movable air chamber circle outer wall wall, the conical surface at the bottom of (66) movable air chamber circle outer wall wall, (67) upper-end surface at the bottom of the movable air chamber circle outer wall wall, (68) wheel shaft, (69) rubber ring, the sliding surface on (70) movable air chamber circle outer wall peg, (71) rubber ring, (72) wheel shaft, (73) slide block, (74) exhaust valve conical surface, (75) exhaust valve bottom surface, (76) the upper end circular planes of movable air chamber circle inwall, the inner conical surface of (77) movable air chamber circle inwall lower end, the male cone (strobilus masculinus) of (78) movable air chamber circle inwall lower end, (79) the intake valve conical surface, (80) end face of cylinder head, (81) oil inlet hole, the pilot hole of (82) exhaust valve peg, (83) pilot hole of movable air chamber circle outer wall peg, (84) the guiding circle wall of movable air chamber circle outer wall, (85) exhaust valve seat conical surface, (86) narrow oil duct, (87) the ring bottom surface of cylinder head, (88) the suction valve cone conical surface, the driven gear on (89) distribution gas compressor bent axle, the driving gear on (90) power crankshaft; N among Fig. 1 and Fig. 2 is that the M among the residing groove grooved rail of the change gear on the exhaust valve, Fig. 2 is the residing groove grooved rail of change gear on the movable air chamber circle outer wall; H among Figure 25-Figure 32 ₁Be lower dead center, the h of working piston ₂Be top dead center, the h of working piston ₃It is the position when moving to terminal point on the end face of firing chamber.

Present embodiment is a petrol engine, and it has following major technology parameter and features: clutch release slave cylinder (7) cylinder diameter is 10cm; The stroke of working piston (10) is 8cm; The compression ratio of clutch release slave cylinder (7) is 9; The length of work connecting rod (8) is 16cm; The crank of power crankshaft (3) radius is 4cm; The maximum lift of four grooved rails (M, the N) track on two big cams (21) is 5.4cm; Distribution gas compressor (36) is installed in a side (referring to Fig. 1) of motor; The two rotating speed of distribution gas compressor bent axle (4) and power crankshaft (5) equates that promptly a gas distribution piston (35) only is a working piston (10) distribution.

One, first stroke.(for ease of describing, the spy is decided to be first stroke with expansion space stroke.For setting forth problem in more detail,, a stroke is divided into several stages or the moment with the corner timing of power crankshaft.)

1. starting point constantly (0 °).＜1〉working piston (10) arrives top dead center (h ₂) (referring to Fig. 3,25).＜2〉mixed gas that is compressed in the firing chamber (54) is lighted already, and (spark plug is just lighted a fire when power crankshaft-25 ° corner.This firing time can be roughly the same firing time with existing four stroke engine.) working piston (10) is about to the expansion space stroke that begins to move down.＜3〉the ring bottom surface (87) of upper-end surface (67) at the bottom of movable air chamber circle outer wall (39) wall and cylinder head (17) fits and (on the ring bottom surface of cylinder head, contains the spark plug of several intake valves (55) and 2 symmetric arrangement.); The conical surface at the bottom of this wall (66) fits with the male cone (strobilus masculinus) (78) of movable air chamber circle inwall (40) lower end; The upper half part of the exhaust valve conical surface (74) and the exhaust valve seat conical surface (85) fit; The inner conical surface (77) of lower half portion of the exhaust valve conical surface (74) and movable air chamber circle inwall (40) lower end fits.＜4〉volume of movable air chamber (13) is zero.＜5〉spiral compression spring (51) is in lax state.＜6〉lower end surface (65) at the bottom of the movable air chamber circle outer wall wall and the bottom surface (75) of exhaust valve are formed a smooth disc jointly, and this disc promptly is this firing chamber (54) end face (referring to Fig. 3,25) constantly.This end face is carved at this moment and is in h ₃On the point, h ₃Point is apart from the top dead center (h of working piston (10) ₂) be 1cm.＜7〉corner of big cam axle (22) is carved at this moment and is set at 0 °.E ' of basic circle track (E '-F ') that two change gears (49) on the movable air chamber circle outer wall are in its grooved rail (M) goes up (referring to Fig. 2,22-I).Sense of rotation (counterclockwise direction) by big cam (21) learns that be the starting point of basic circle track at E '; Two change gears (46) on the exhaust valve are in interior last (referring to Fig. 2, the 22-II) of basic circle track (E " F ") of its grooved rail (N) at 1.＜8〉when gas distribution piston (35) when being in top dead center, the corner of distribution gas compressor bent axle (4) is set at 0 °.Because there is phase relationship in the two corner of bent axle (4) and power crankshaft (5), this phase relationship of present embodiment is that distribution gas compressor bent axle (4) is fulfiled 90 ° of corners ahead of schedule than power crankshaft (5).Therefore, this moment gas distribution piston (35) has been on the only about half of stroke that moves down stroke (suction stroke).

2. phase I (0 °-140 °) and (140 °) constantly.＜1〉this stage power crankshaft (5) goes to 140 ° by 0 °, and promptly this moment working piston (10) is finished expansion space stroke nearly, soon arrives lower dead center (h ₁).＜2〉this moment big cam axle (22) has also been finished 140 ° of corners.Two change gears (49) on this movable air chamber circle outer wall have slided into a point (referring to Figure 22-I) by starting point E ' in stage in the basic circle track of its grooved rail (M) (E '-F '); Two change gears (46) on the exhaust valve have slided into terminal point F by 1 in the basic circle track (E " F ") of its grooved rail (N) " (referring to Figure 22-II).Therefore, in this stage, movable air chamber circle outer wall (39) and exhaust valve (53), and movable air chamber circle inwall (40), the three is actionless.But this constantly after, what two change gears (46) on the exhaust valve will enter its grooved rail (N) moves down arc trajectory (F " G "), that is to say, opens after exhaust valve (53) will be carved at this moment.＜3〉in this moment, distribution gas compressor bent axle (4) has been finished 230 ° of corners (140 ° add 90 ° that shift to an earlier date on the phase place) altogether.Therefore, this moment gas distribution piston (35) has been finished the suction stroke that moves down already, and the compression stroke of having moved on having entered.

3. second stage (140 °-180 °) and (180 °) constantly.＜1〉this moment working piston (10) has arrived lower dead center (h ₁), promptly first stroke finishes (referring to Figure 26).＜2〉this moment big cam axle (22) has also been finished 180 ° of corners.Two change gears (46) on this graduated discharge door move down in the arc trajectory (F " G ") its grooved rail (N), by starting point F " slided into the g point (referring to Figure 22-II); establishing the lift that g orders is 0.6cm, promptly exhaust valve (53) this opened 0.6cm (referring to Figure 26) constantly.＜3〉this stage, the waste gas of existing 50%-60% relies on the pressure energy of self in the clutch release slave cylinder (7), has discharged outside the cylinder with velocity of sound.Behind the waste gas flow path exhaust port (15), enter outlet pipe (20).In this stage, be also referred to as the free exhaust stage.(exhaust mode in this stage and principle and existing four stroke engine are identical.Consult the 180th page of " automotive encyclopedia " first volume that China Machine Press publishes.)＜4〉two change gears (49) on this movable air chamber circle outer wall in stage in the basic circle track of its grooved rail (M) (E '-F '), slided into terminal point F ' by a point and (, after this moment, will enter and move down arc trajectory (F '-G ') referring to Figure 22-I).Be this stage, movable air chamber circle outer wall (39) is still actionless, but this will move down constantly.This constantly still is zero for the volume of movable air chamber (13).＜5〉this moment, because exhaust valve (53) has moved down 0.6cm, so two projections (50) on two pegs of exhaust valve have also moved down 0.6cm.Therefore spiral compression spring (51) has shunk 0.6cm, make its elastic force press the circular planes (76) of movable air chamber circle inwall (40) upper end biglyyer, thereby make the male cone (strobilus masculinus) (78) of movable air chamber circle inwall lower end fit tightlyer mutually with the wall base cone face (66) of movable air chamber circle outer wall.Because this constantly movable air chamber circle outer wall (39) is actionless, movable air chamber circle inwall (40) also is actionless.＜6〉this moment distribution gas compressor bent axle (4) has been finished 270 ° of corners (180 ° add 90 ° that shift to an earlier date on the phase place) altogether.Be that gas distribution piston (35) has moved about half stroke on.Compressed mixed gas though this moment, density also was not very big, has been full of several inlet holes (52) in gas tube (28), suction tude (27), air inlet air guide sleeve (19), the cylinder head.Owing to fitting in the upper-end surface (67) at the bottom of by movable air chamber circle outer wall wall, the bottom surface of several intake valves (54), thus several intake valves (55) to carve at this moment be (referring to the Figure 26) that is closing.

Two, second stroke.(this trip will be finished exhaust, air inlet, three work of compression.But exhaust work has just been finished 50%-60% at the end of last stroke.)

1. phase I (180 °-215 °) and (215 °) constantly.＜1〉this stage working piston (10) is by lower dead center (h ₁).The a bit of distance that moved up has begun forced exhaust (referring to Figure 27).＜2〉two change gears (49) on this movable air chamber circle outer wall have slided into b point (referring to Figure 22-I, 23) the moving down on the arc trajectory (F '-G ') of its grooved rail (M) by starting point F ' in stage; Two change gears (46) on the exhaust valve move down in the arc trajectory (F " G ") its grooved rail (N), have slided into terminal point h point (referring to Figure 22-II, 23) by the g point.Be movable air chamber circle outer wall (39) and exhaust valve (53) the two be that constant speed has moved down a segment distance basically in this stage.Therefore exhaust valve (53) is still (referring to Figure 27) of unlatching, and the waste gas in the clutch release slave cylinder (7) continues to efflux.＜3〉the upper end circular planes (76) of movable air chamber circle inwall (40) continues to bear pressing energetically of spiral compression spring (51); The male cone (strobilus masculinus) of its lower end (78) also continues to be close to mutually with the wall base cone face (66) of movable air chamber circle outer wall.This stage is because movable air chamber circle outer wall (39) moves down, and therefore, movable air chamber circle inwall (40) also moves down synchronously thereupon, and the two has formed a circular movable air chamber (13) jointly, and the volume of this air chamber becomes big by zero.Simultaneously, several intake valves (55) are at two power (mixture pressure of being compressed into by the distribution gas compressor in the negative-pressure sucking that the volume of movable air chamber (13) is produced when becoming big by zero and several inlet holes (52).) acting in conjunction under, overcome the pulling force of extension spring (59) separately, the guiding fence (57) on the intake valve (55) is to lower slider, promptly several intake valves (55) are opened (referring to Figure 27).Guiding fence (57) the empty sleever armpit part (referring to Figure 15,16) of mixed gas on intake valve enters in the movable air chamber (13).＜4〉in this moment, distribution gas compressor bent axle (4) has been finished 305 ° of corners (215 ° add 90 ° that shift to an earlier date on the phase place) altogether.Gas distribution piston (35) still is on the stroke that moves, and continues the pushing mixed gas.

2. second stage (215 °-250 °) and (250 °) constantly.＜1〉this stage working piston (10) is moving a segment distance (referring to Figure 28) on again on the last stroke that moves.＜2〉two change gears (49) on this movable air chamber circle outer wall have slided into c point (referring to Figure 22-I, 23) the moving down in the arc trajectory (F '-G ') of its grooved rail (M) by the b point in stage; Two change gears (46) on the exhaust valve move down in the arc trajectory (F " G ") its grooved rail (N), have slided into i point (referring to Figure 22-II, 23) by the h point.Be movable air chamber circle outer wall (39) of this and exhaust valve (53) in stage the two all moving down, but the speed that moves down of exhaust valve is slower than the speed that moves down that movable air chamber is justified outer wall gradually.The inner conical surface (77) of the conical surface of exhaust valve (74) and movable air chamber circle inwall (40) lower end, the distance of the two is being dwindled gradually, and promptly exhaust valve (53) cuts out (referring to Figure 28) gradually.＜3〉this stage spiral compression spring (51) though elastic force weakening gradually, it still has enough elastic force to impel the conical surface (78) to be close to mutually with the conical surface (66), promptly movable air chamber circle inwall (40) still moves down synchronously with movable air chamber circle outer wall (39).＜4〉volume of movable air chamber of this stage (13) is continuing increase, and mixed gas continues guiding fence (57) space on several intake valves, inserts this chamber.But several intake valves (55) are owing to be subjected to the tension of spiral stretching spring (59) separately, remain on certain lift after, no longer continue to move down.＜5〉this moment distribution gas compressor bent axle (4) has been finished 340 ° of corners (250 ° add 90 ° that shift to an earlier date on the phase place) altogether.Gas distribution piston (35) still is on the stroke that moves, and is about to arrive top dead center.

3. phase III (250 °-270 °) and (270 °) constantly.＜1〉this stage working piston (10) moves (referring to Figure 29) on continuing.The end face of this moment working piston (10) is apart from lower dead center (h ₁) be about 3.5cm.(see parameter.Crank (3) radius that the stroke of working piston (10) is 8cm, the length of the connecting rod (8) of working is 16cm, power crankshaft is 4cm.Be subjected to the qualification of this parameter, when power crankshaft (5) went to 270 °, the end face of working piston (10) was apart from lower dead center (h ₁) be about 3.5cm.)＜2〉two change gears (49) on this movable air chamber circle outer wall are the moving down in the arc trajectory (F-G ') of its grooved rail (M) in stage, have slided into terminal point G ' (referring to Figure 22-I, 23) by the c point; Two change gears (46) on the exhaust valve move down in the arc trajectory (F " G ") its grooved rail (N), have slided into terminal point G by the i point " (referring to Figure 22-II)." point is maximum lift (referring to Figure 23), and this lift is 5.4cm (seeing parameter) for G ' and G.Be movable air chamber circle outer wall (39) and exhaust valve (53) the two with different speed, but same inscribing at this moment moved on to terminal point, the two has all finished the whole stroke that moves down of 5.4cm.＜3〉inner conical surface (77) of lower half portion of this moment exhaust valve conical surface (74) and movable air chamber circle inwall lower end fits, and promptly exhaust valve (53) thoroughly cuts out (referring to Figure 29).A smooth disc has been formed jointly with the lower end surface (65) at the bottom of the movable air chamber circle outer wall wall in the bottom surface of exhaust valve (75), this disc carve at this moment with on working piston (10) end face that moves, the two is at a distance of being 0.1cm only.(referring to parameter with referring to Figure 29.This is apart from designing more for a short time, and the waste gas in the clutch release slave cylinder is arranged totally more.) this constantly the waste gas in clutch release slave cylinder (7) near 100% ground emptying.Forced exhaust is carved end at this moment.＜4〉this constantly spiral compression spring (51) recovers fully original (before exhaust valve moves down) than relaxed condition, but it still has that enough elastic force impels that the conical surface (78) and the conical surface (66) fit, lower half portion of the conical surface (77) and the conical surface (74) fits.＜5〉this moment distribution gas compressor bent axle (4) has been finished 360 ° of corners (270 ° add 90 ° that shift to an earlier date on the phase place) altogether.Gas distribution piston (35) has been finished air-breathing and two strokes of calming the anger, arrives top dead center.＜6〉volume of this movable air chamber of moment (13) has reached maximum value.Because gas distribution piston (35) finished gas pressuring stroke, therefore, several intake valves (55) are under the tension of spiral stretching spring (59) separately, and all return is closed (referring to Figure 29).

4. quadravalence section (270 °-280 °).＜1〉working piston (10) has moved a segment distance (referring to Figure 30) on continuing again.＜2〉two change gears (49) on the movable air chamber circle outer wall move on its grooved rail (M) in the arc trajectory (G '-E '), have slided into d point (referring to Figure 22-I, 23) by starting point G '; Two change gears (46) on the exhaust valve move on its grooved rail (N) in the arc trajectory (G " E "), " have slided into j point (referring to Figure 22-II, 23) by starting point G.Be movable air chamber circle outer wall (39) and exhaust valve (53) the two all move last, but movable air chamber circle outer wall (39) on move velocity ratio working piston (10) on move speed slightly soon, form the bags therefrom gradually; The speed of moving on the exhaust valve (53) is faster than moving speed on the movable air chamber circle outer wall (39) again, exhaust valve is through the lower half portion of its conical surface (74) and the applying of the conical surface (77) thus, force movable air chamber circle inwall (40) to move synchronously with it, the conical surface (78) has then separated a segment distance (referring to Figure 30) with the conical surface (66) simultaneously.Therefore, be in the mixed gas of half compressive state in the movable air chamber (13),, flowed into the bags that is forming gradually, and accepted the continuation compression of working piston (10) through the unlatching mouth of the conical surface (78) with the conical surface (66).The volume of movable air chamber (13) begins to dwindle gradually.＜3〉distribution gas compressor bent axle (4) goes to 10 ° by 0 ° of next circuit, and promptly gas distribution piston (35) to moving down, has entered suction stroke by top dead center, for the next circuit distribution of clutch release slave cylinder (7) is prepared.

5. five-stage (280 °-310 °).＜1〉working piston (10) has moved a segment distance (referring to Figure 31) on continuing again.＜2〉two change gears (49) on the movable air chamber circle outer wall move on its grooved rail (M) in the arc trajectory (G '-E '), have slided into e point (referring to Figure 22-I, 23) by the d point; Two change gears (46) on the exhaust valve move on its grooved rail (N) in the arc trajectory (G " E "), have slided into k point (referring to Figure 22-II, 23) by the j point.Be that movable air chamber circle outer wall (39) and the two continuation of exhaust valve (53) move last.The speed of moving on the movable air chamber circle outer wall (39) is still faster than moving speed on the working piston (10), and the bags of Xing Chenging also increases (referring to Figure 31) thereupon gradually; The speed of moving also continues faster than moving speed on the movable air chamber circle outer wall (39) on the exhaust valve (53), lower half portion of the exhaust valve conical surface (74) still fits with the conical surface (77), movable air chamber circle inwall (40) continues to move synchronously with exhaust valve (53), simultaneously, the conical surface (78) then separates more fartherly with the conical surface (66), the unlatching mouth of promptly movable air chamber (13) opened greatlyyer.＜3〉volume of movable air chamber (13) continues to dwindle, and the mixed gas in the movable air chamber continues to flow to the bags that forms gradually, and in flowing the generation cylinder diameter to strong eddy current, make mixed gas mix more thoroughly, even.＜4〉distribution gas compressor bent axle (4) goes to 40 ° by 10 ° of next circuit, and promptly gas distribution piston (35) still is on the suction stroke that moves down, and continues as the next circuit distribution of clutch release slave cylinder (7) and prepares.

6. the 6th stage (310 °～335 °) and (335 °) constantly.＜1〉this stage working piston (10) has moved a segment distance (referring to Figure 32) on continuing again.＜2〉two change gears (49) on this movable air chamber circle outer wall move on its grooved rail (M) in the arc trajectory (G '-E ') in stage, have slided into f point (referring to Figure 22-I, 23) by the e point; Two change gears (46) on the exhaust valve move on its grooved rail (N) in the arc trajectory (G " E "), have slided into terminal point E by the k point " (referring to Figure 22-II, 23).Be that movable air chamber circle outer wall (39) and the two continuation of exhaust valve (53) move last.The speed of moving on the movable air chamber circle outer wall (39) is still faster than moving speed on the working piston (10), and the bags that forms continues to increase gradually; The speed of moving on the exhaust valve (53) is then slow relatively, so the distance of the conical surface (78) and the conical surface (66) is being dwindled (referring to Figure 32) gradually.The volume of movable air chamber (13) dwindles further.＜3〉lower half portion of this graduated discharge door conical surface (74) continues to fit with the conical surface (77), promptly exhaust valve (53) and movable air chamber circle inwall (40) the two move to terminal point synchronously; This constantly upper half part of the exhaust valve conical surface (74) then fit i.e. exhaust valve (53) take a seat (referring to Figure 32) with the exhaust valve seat conical surface (85).＜4〉mixed gas in the movable air chamber (13) continues the bags that the flow direction forms gradually, and continues to produce strong cylinder diameter to eddy current, and mixed gas is continuing mixing.＜5〉this moment, two spark plugs that are symmetrically arranged in the mounting hole (18) begin igniting.＜6〉this stage distribution gas compressor bent axle (4) goes to 65 ° by 40 ° of next circuit, and promptly gas distribution piston (35) still is on the suction stroke that moves down, and continues as the next circuit distribution of clutch release slave cylinder (7) and prepares.

7. the 7th stage (335 °～360 °) and terminal point constantly (360 °).＜1〉this moment working piston (10) has arrived top dead center (h ₂), promptly second stroke finishes (referring to Figure 25).＜2〉two change gears (46) on this graduated discharge door " have slided into 1 point (referring to Figure 22-II, 23) by starting point E in the basic circle track (E " F ") of its grooved rail (N).Therefore exhaust valve (53) and movable air chamber circle inwall (40) is actionless in this stage.＜3〉two change gears (49) on this movable air chamber circle outer wall move on its grooved rail (M) in the arc trajectory (G '-E ') in stage, have slided into terminal point E ' by the f point.(referring to Figure 22-I, 23).Be after having moved a segment distance on movable air chamber circle outer wall (39) continues, to have arrived terminal point.In this moment, the upper-end surface (67) at the bottom of the movable air chamber circle outer wall wall fits with the ring bottom surface (87) of cylinder head; The conical surface at the bottom of this wall (66) fits with the conical surface (78); A smooth disc has been formed jointly with the bottom surface (75) of exhaust valve in lower end surface at the bottom of this wall (65), and this disc promptly is this firing chamber (54) end face (referring to Figure 25) constantly.＜4〉firing chamber (54) are carved at this moment finally and are formed and the location.Simultaneously, it is minimum that the volume of movable air chamber (13) reaches, vanishing.The mixed gas that last part is extruded movable air chamber (13) and has been lighted with strong eddy current state, enters the firing chamber (54) of final formation, and with large-area flame all mixed gass that ignites.＜5〉this stage distribution gas compressor bent axle (4) goes to 90 ° by 65 ° of next circuit, and promptly gas distribution piston (35) still is on the suction stroke that moves down, and continues as the next circuit distribution of clutch release slave cylinder (7) and prepares.

So far, working piston (10) has been finished two strokes, i.e. two-strokes of a work cycle.It will repeat above-mentioned circulation continuously, make power crankshaft (5) outputting power.

Can learn that by present embodiment the whole folding process of movable air chamber circle outer wall (39) promptly is that the volume of movable air chamber (13) becomes big whole gas replenishment process by zero.The corner that this process accounts for power crankshaft (5) is 90 ° (also can be designed to approach 90 °), and gas distribution piston (35) is finished a gas pressuring stroke and then accounted for 180 ° of distribution gas compressor bent axle (4) corners.So the distribution process of present embodiment is very not smooth and easy.This is because present embodiment adopts a gas distribution piston (35) only is a working piston (10) distribution, promptly this technical feature of equating of the two rotating speed of distribution gas compressor bent axle (4) and power crankshaft (5) extremely.But if adopt a gas distribution piston (35) is the scheme of two working pistons (10) distribution, and then this problem can be readily solved, i.e. distribution process can be more smooth and easy.It is 180 ° that this scheme (referring to Figure 24) must make pairing two cranks of two working pistons (10) (3) angle; The rotating speed of distribution gas compressor bent axle (4) is the twice of power crankshaft (5) rotating speed, and promptly the number of teeth of driving gear (90) is the twice of driven gear (89) number of teeth; The corner phase relationship of two bent axles (5 and 4) is that when one of them working piston in two working pistons (10) was in lower dead center, gas distribution piston (35) also was on the lower dead center.In addition, in the joint of gas tube (28) and suction tude (27), add a suction tude (27) again and make it and link to each other with air inlet air guide sleeve (19) on second clutch release slave cylinder.The technical characteristics of others is identical with present embodiment to get final product.In addition, present embodiment is that big cam (21) is arranged on the end face (80) of cylinder head, and this obviously can make the height dimension of motor higher.If will reduce this height dimension, big cam (21) can be arranged on the end of power crankshaft (5), perhaps cancel big cam (21), directly the grooved rail on the big cam (M, N) is arranged on the side of engine flywheel, again by being similar to the device of push rod, rocking arm etc. and so on, make exhaust valve (53) and movable air chamber circle outer wall (39) and movable air chamber circle inwall (40) can obtain the control of grooved rail track, and move in proper order.Also have, if will implement the gasoline in-cylinder injection and adopt mechanical control method, can develop a kind of new-type oil sprayer (or certain mechanical device) in addition, this oil sprayer can be loaded on spark plug near, it can be in sometime (that when being in maximum value such as the volume at movable air chamber constantly), only can be automatically and accurately record the total amount of the fresh air in the movable air chamber (13) according to the air pressure in the movable air chamber (13) and two parameters of temperature, then make accurate quantitative injection more automatically; If will implement the gasoline in-cylinder injection and adopt electronic control mode, then can in movable air chamber (13), arrange sensors such as air pressure, temperature, and arrange corresponding oil sprayer, just can make than the accurate more quantitative injection of prior art.Have again, if will implement lean combustion, can be near spark plug, arrange oil sprayer again, keep a Carburetor (29 or 33) simultaneously, one of its method is, when motor is in sub load work, Carburetor (29 or 33) only is responsible for the rarer or very rare mixed gas of preparation, and make it to enter in the movable air chamber (13), and oil sprayer only is responsible for spraying in the very short period at this section of spark plug sparking front and back the gasoline mist of oil of a small amount of or minute quantity, and the formation rich mixture, and make it to be distributed near the contiguous sparking-plug electrode, (in this injection time, (64) are moved at the bottom of the wall of movable air chamber circle outer wall in order to guarantee spark plug lighting a fire smoothly, and near terminal point (referring to Figure 32), therefore it can be rapidly evaporated to rich mixture with the mist of oil on the upper-end surface (67) that is injected at the bottom of this wall, and with carry on it with force feed near the electrode of spark plug.); When motor is in full-load operation, Carburetor (29 or 33) just changes the denseer or dense mixed gas of preparation automatically into, and make it to enter in the movable air chamber (13), oil sprayer then can quit work automatically, no longer oil spout, because enter the denseer or dense mixed gas in the movable air chamber (13), can guarantee the smooth igniting of spark plug.Two of method is, no matter which kind of operating mode motor is under is worked, and Carburetor (29 or 33) all only is responsible for the rarer or very rare mixed gas of preparation, and oil sprayer then is responsible for motor when sub load is worked, only spray the gasoline mist of oil of a small amount of or minute quantity, in order to guarantee the smooth igniting of spark plug; When full engine load was worked, the injection time that just automatically prolongs sprayed relatively large or a large amount of gasoline mist of oils, the demand during in order to the work of assurance full engine load.Three of method is, on two basis of method, the cancellation closure (comprises cancellation ram's horns (31) and diverter valve (30), petrolic Load Regulation regulated by traditional amount change to the matter adjusting.The principle of its principle and stratified-charge combustion roughly the same (consult " automotive engineering dictionary " that People's Transportation Press publishes 631～633 pages), its effect is not only to make motor can reduce pumping loss when sub load is worked, improve fuel economy, but also can improve discharging, minimizing pollution.

Claims

1. a two-stroke engine with aerated movable combustion chamber adopts integral one-piece crankshaft and bearing shell formula crankshaft bearing and bearing shell formula connecting rod bearing, and uses the drain pan formula lubricated, it is characterized in that:

A. motor is provided with the distribution gas compressor into its distribution, and the power of distribution gas compressor comes from motor;

B. do not establish relief opening and scavenging port on the casing wall of clutch release slave cylinder, on the cylinder head at clutch release slave cylinder top, be provided with the movable air chamber that the size that is subjected to the cam profile TRAJECTORY CONTROL can make upper and lower motion significantly and transfixion and its volume also changes thereupon, also be provided with and also be subjected to the cam profile TRAJECTORY CONTROL also can do upper and lower motion and actionless exhaust valve significantly;

C. the two the characteristics of motion of movable air chamber and exhaust valve exists difference;

The common all working of finishing in the work cycle that cooperates such as d. movable air chamber, exhaust valve, working piston, distribution gas compressor.