CN107013325A - Automatically controlled variable compression ratio and the engine of oil spout position - Google Patents

Abstract

A kind of automatically controlled variable compression ratio and the engine of oil spout position, it includes that the variable compression ratio of mechanical compression ratio can be changed, with the atomizer synchronously done work with the telescoping mechanism, and the compression ratio and oil spout position when causing compression ratio during time of engine low load operation with load in engine and high capacity operating are entirely different, realize different compression ratios when meeting different engine loadings and different engine and oil spout position.The change of oil spout position followed by the change of compression ratio and change, effect produced by it acts on the uniformity of the combustion mixture in the second combustion chamber of variable compressive piston when realizing diverse location, assist the work of the duration of ignition, to meet different compression ratios when different engine loadings and different engine and different oil spout positions, the power of engine is lifted so as to improve the efficiency of combustion of fuel oil and reduces carbon distribution with power, effectively extend rocking arm, camshaft, when advise the service life of chain.

Description

Automatically controlled variable compression ratio and the engine of oil spout position

Technical field

The present invention relates to petrol engine, compression ratio can be changed according to engine loading and rotating speed by particularly relating to one kind The engine of example.

Background technology

The compression ratio of engine refers to the ratio of stroke and combustion chamber of the acting piston in cylinder, and compression ratio is higher, combustion Burn efficiency better.But compression ratio is higher, the pinking of engine is higher, the easier engine knock of cylinder, piston and wear and tear.Especially exist Under high load condition, the power of engine declines on the contrary.

Do higher and higher with the label of gasoline, the raising of octane number be exactly in order to reduce because compression ratio is high and produce it is quick-fried Shake, still, its effect is limited, and its compression ratio can only also be controlled with the speed engine of blue sky technology its compression ratio of the wound of Mazda 13:1, certainly equal refinement and manufacture craft of the engine because of region gasoline also causes the engine supply Europe for creating blue sky technology of speeding The compression ratio of man of ally brings up to 14:1 high compression value.

And the existing aggravation in order to prevent pinking, it is common practice to detonation sensor is installed at cylinder head, when CPU detections Produced to engine after pinking, the continuation of pinking is reduced by correcting the duration of ignition, however, pinking has been that occur, it is existing Means simply it control prevent aggravation.

Found through retrieval, the patents applications granted of variable compressive it is most for inventor：Magnetic valve, the spiral shell of Wei Yanei Lapies The related application of the parcel received of bar, cam etc. 20；And more than 10 related applications more particularly to change acting piston of daily output automatic vehicle Upward position；With more than 50 related applications of Toyota automatic vehicle more particularly to change expansion ratio and reduce fuel consumption；Ford 2 inventions of Universal Tech. Corp. authorize the change that compression ratio is mainly realized to change length of connecting rod, although so many Patent in, the patent it is the simplest, cost is also minimum, and still, such stress for setting connecting rod will be maximum examines Test, and the change of compression ratio is changed by the change of temperature, and practicality is not high；And 6 related applications of Honda Company Tenure is abandoned because of practicality or other reasons；3 Patents of company of Cherry, the wherein position of piston crown are realized The change of compression ratio is also practical, and still, the increase of piston weight will increase inertia force, cause power dropping and oil consumption Rise；It is wonderful that lucky 2 inventions authorize that daily output changes that position of the connecting rod with piston play the same tune on different musical instruments.

Compression ratio is change with rotating speed and temperature and changed in the prior art above, and can not change with load and become Change, thus, in the urgent need to it is a kind of can with automatically adjusting compression ratio under the different loads of engine and the operating mode of different rotating speeds, And compression ratio is reduced according to the increasing of the moment of gas pedal or twist grip throttle control and the duration of ignition is stepped back, to meet The efficiency of engine is maximized, simultaneously, it is also desirable under different compression ratio states, oil spout position of the atomizer in combustion chamber Change can be followed, is maximized with the efficiency for realizing engine.

The content of the invention

The present invention proposes a kind of variable compression ratio engine, solves the unified pressure of different engine loads in the prior art Problem is compared in contracting.

The technical proposal of the invention is realized in this way：A kind of automatically controlled variable compression ratio and the engine of oil spout position, its Variable compression ratio including mechanical compression ratio can be changed, and the atomizer synchronously done work with the telescoping mechanism, and So that compression ratio and oil spout when compression ratio during time of engine low load operation is with load in engine and high capacity operating Position is entirely different, realizes different compression ratios when meeting different engine loadings and different engine and oil spout position. The change of oil spout position followed by the change of compression ratio and change, the variable compressive when effect produced by it will realize diverse location The uniformity effect of combustion mixture in second combustion chamber of piston, assists the work of the duration of ignition, is started with meeting difference Different compression ratios and different oil spout positions when machine load and different engine, so as to improve the efficiency of combustion of fuel oil to carry Power and the power for rising engine reduce carbon distribution, effectively extend rocking arm, camshaft, when advise the service life of chain.

Wherein, motor includes：Rotor, runner and magnet coil, runner are arranged on rotor, and rotor is sleeved on magnet coil Outside.

Further, the center of the runner is perforation, and the perforated design is into internal thread.

Wherein, an expansion link is stretched out at the center of variable compressive piston, and the expansion link is designed to external screw thread.

Further, the external screw thread is matched with internal thread.

Wherein, the periphery of the variable compressive piston is also provided with annular groove.

Further, the annular groove is used to install sealing ring.

Wherein, the cylinder head has an inlet nozzle, and the inlet nozzle is through to the variable compressive piston and cylinder head knot Space at conjunction.

Further, the inlet nozzle lubricates to form threeway with grease pump and cylinder head third party.

Wherein, the motor is connected with vehicle-mounted ECU.

Wherein, when the engine loading moment is excessive, the duration of ignition steps back the regular hour by the current duration of ignition.

Further, the engine loading gradually step-down when, the duration of ignition gradually shifts to an earlier date, and be gradually restored to work as The preceding duration of ignition.

Wherein, the regulation of the duration of ignition, is the ratio based on throttle position and engine speed.

Beneficial effect：

1. solving compression ratio in the prior art can not change and change with load.

2. compression ratio and duration of ignition synchronous working, by knock control, preventing before generation rather than after generation adds It is acute.

3. the change of oil spout position followed by the change of compression ratio and change, the effect produced by it will realize different positions The uniformity effect of combustion mixture when putting in the second combustion chamber of variable compressive piston, assists the work of the duration of ignition, with Different compression ratios and different oil spout positions when meeting different engine loadings and different engine, so as to improve fuel oil Efficiency of combustion lifts the power and power of engine.

4. rule chain, camshaft, rocking arm and cylinder, the service life for the piston that does work when improving, especially reduce rocking arm with it is convex The shake abrasion of wheel shaft contact surface, and, the concussion abrasion of acting piston skirt causes support force uneven, causes piston ring different Often gone here and there and burn oil on abrasion machine oil.

5. extend the service life of battery and starter motor.

6. improving low speed torsion, increase high speed power, and reduce fuel consumption.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.

The ultralow compression ratio schematic diagram in shutdown or starting state when Fig. 1 retracts for the variable compressive piston of the present invention

Idling mode low compression ratio schematic diagram when Fig. 2 stretches out for the variable compressive piston of the present invention

Fig. 3 for the present invention variable compressive piston stretch out when high compression when charge air flow through transfer port schematic diagram

Fig. 4 is control schematic diagram of the invention

A kind of cylinder heads of variable compression ratio of Fig. 5

A kind of pistons of variable compression ratio of Fig. 6

Fig. 7 is the overlapping schematic diagram of sealing ring

Fig. 8 is the assembling schematic diagram of variable compressive piston and motor

Reference numeral explanation：

100---- cylinder heads

110--- combustion chambers

120--- cylinder faying faces

130---- slide openings

200---- valves

300---- variable compressive pistons

310---- transfer ports

400---- sealing rings

410---- chutes

500---- inlet nozzles

510---- hydraulic cavities

600---- expansion links

700---- motors

730---- runners

740---- magnet coils

750---- rotors

810---- atomizers.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely Description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.

A kind of automatically controlled variable compression ratio and the engine of oil spout position, it includes that the pressure-variable of mechanical compression ratio can be changed Contracting than mechanism, and with the telescoping mechanism synchronously acting atomizer 810, and cause time of engine low load operation when it is described Compression ratio and oil spout position when compression ratio is with load in engine and high capacity operating is entirely different, and realization meets difference and started Machine loads the different compression ratios and oil spout position during with different engine.The change of oil spout position followed by the change of compression ratio Change and change, the effect produced by it will be flammable mixed in the second combustion chamber of variable compressive piston 300 when realizing diverse location The uniformity effect of gas is closed, the work of the duration of ignition is assisted, to meet when different engine loadings and different engine Different compression ratios and different oil spout positions, product is reduced so as to improve the efficiency of combustion of fuel oil to lift the power of engine with power Carbon, effectively extend rocking arm, camshaft, when advise chain service life.

Wherein, the maximum compression ratio is more than 20.The change of compression ratio, such as 6 ~ 20 compression ratio, then do work piston It is 6 in the stroke of cylinder and the volume fraction of combustion chamber:1, more particularly in the startup moment of engine, compression ratio is less than normal The 7.8 of work:When less than 1, the starting load of starter motor will decrease minimum more than 30%, that is, to moment work The reduction of starting current, starter motor operating after, its need starting current declined, if by low current it is ensured that The normal rotation of starter motor just can realize the requirement of the startup rotating speed of engine, starting capacity and voltage to battery will Asking also will not be so harsh, is so more beneficial for extending the service life of battery and starter motor.

Further, when the engine operates with a low speed, the compression ratio is low, that is to say, that after starter motor runs well The first requirement of engine is exactly by compression ratio adjustment to 7.8:1~8:In the range of 1, to meet the positive normal pressure of engine work Contracting ratio.

Further, when the engine speed is higher, then the compression ratio is higher, that is to say, that with accelerator open degree Increase, the rotating speed of engine constantly increasing, then, and another requirement of engine is exactly from 7.8 by compression ratio:1 regulation to 20:In the range of 1 even more high, to meet the high compression ratio of engine peak speed work.Among this, as throttle exists Idling mode and fast state are continually changing, and another requirement of engine is exactly from 7.8 by compression ratio:1 to 20:1 even more Change between high scope, to meet demand of the different rotating speeds to different compression ratios.

As shown in Fig. 1,2,3,8, wherein, the compressed action, which starts timing changing mechanism, includes that variable compressive can be controlled The flexible mechanism of piston 300.The diameter of variable compressive piston 300 is bigger, and N stretchings are worth smaller, the diameter of variable compressive piston 300 Smaller, N stretching values are bigger.The periphery of the variable compressive piston 300 is provided with least one annular groove 410 and one and stretched from inner face protrusion Contracting bar 600, expansion link 600 is designed with external screw thread and nozzle holder, and the nozzle holder is used to installing atomizer 810, motor with Variable compressive piston is arranged in the combustion chamber of cylinder head 100.The motor includes：Magnet coil 740, rotor 750 and runner 730, the center of the runner 730 is in perforate and be designed with internal thread, the external screw thread phase of the internal thread and expansion link 600 Match somebody with somebody, the expansion link 600 plays and is mutually perpendicular to effect when being moved to variable compressive piston 300 and cylinder head 100, prevents variable Compression piston 300 is tilted by variable compressive piston 300 caused by the pressure bursting force of the detonation of combustion chamber 110, the design of motor housing both sides Having has fastener hole on hangers, hangers, the fastener hole is corresponding with the motor fastener hole on cylinder head.Motor 700 is arranged on Cylinder head is simultaneously fixed on motor fastener hole by screw, and the expansion link 600 of the variable compressive piston 300 passes through motor Position installed in the combustion chamber 110 of cylinder head 100, the cavity formed between the variable compressive piston 300 and cylinder head 100 It is called hydraulic cavities 510, the inlet nozzle 500 of hydraulic cavities 510 and one, the inlet nozzle 500 is connected with the grease pump of former car, together Shi Suoshu grease pumps also need the place lubricated to supply to cylinder head is other simultaneously to lubricating oil when 510 fuel feeding of inlet nozzle The integrated threeway state of oil.The motor 700 works to realize the stretching value and retraction value of variable compressive piston 300, wherein, it is variable The stretching of compression piston 300 or the forward or reverse retracted by vehicle-mounted ECU controlled motor 700, motor 700, which is rotated forward, drives runner 730 rotating forwards make expansion link 600 drive the retraction cylinder head 100 of variable compressive piston 300, and the reversion of motor 700 drives runner 730 to invert Expansion link 600 is set to drive variable compressive piston 300 to stretch out cylinder head 100.The lubricating oil of hydraulic cavities 510 is all located when stretching out or retracting In full state, the vibrations for achieving fuel oil explosion time are eliminated by lubricating oil, extension expansion link 600 and the bound site of motor 700 The internal and external threads service life put, prevents screw thread inordinate wear.The inlet nozzle 500 due to grease pump and cylinder head 100 Third party lubrication be threeway state, therefore when variable compressive piston 300 is retracted lubricating oil through the reflux of inlet nozzle 500 to third party Lubrication, eliminates the retraction resistance of variable compressive piston 300.The annular groove is used to install sealing ring 400, and the sealing ring 400 has Two major features：First, prevent that string is gone in hydraulic cavities 510 on the gas of combustion chamber 110, second, prevent lubrication in hydraulic cavities 510 Oil, which is inhaled into combustion chamber 110 and participates in burning, causes burn oil, and the 3rd, the heat of combustion chamber is quickly passed out through cylinder head Go.It can also be independent suspension in this central inlet nozzle 500, be not connected with grease pump, but by being come from cylinder head 100 The state that the lubricating oil of grease pump is voluntarily flowed into.Wherein, the atomizer 810 is mounted in stretching for variable compressive piston 300 In contracting bar 600, the position of atomizer 810 is by with the variable oil spout position for stretching the movement of the position of compression piston 300 but atomizer 810 Remain at the center of the second combustion chamber of variable compressive piston 300 or keep same original with variable telescopic piston 300 There is position, the benefit so designed will cause the oil spout position of second combustion chamber when stretching of variable compressive piston 300 to protect always Hold in origin, so that the blast of the combustion mixture for the second combustion chamber for improving variable compressive piston 300 promotes efficiency.At this It is central to be independent suspension because of inlet nozzle 500 or be connected with third party's lubrication of grease pump and cylinder head 100 for threeway, it is such Design can optimize the protection of lubricating system, when the lubrication oil consumption of engine is a certain amount of, and the pump oil amount of lubricating oil pump will Decline, in the case where ensureing the lubricating condition of engine, inlet nozzle can not normal work, liquid now by the reduction of oil pump pump oil amount Pressure chamber causes compression ratio reduction to realize reduction engine speed and power because no oil forces variable compressive piston to retract original position, carries Before prevent engine because lose oil caused by engine abnormity wear and tear.

The vehicle-mounted ECU of Fig. 4 present invention further indicates that variable compressive is become with igniting by throttle and engine speed Change and change, an end of vehicle-mounted ECU is connected with throttle position switch, and No. two ends are connected with engine speed sensor, three Number end is connected with variable compressive piston position sensor, and No. four ends and motor connection, No. five ends are connected with ignition coil, the 6th end It is connected with atomizer.When the compression ratio is low, the variable compressive piston 300 is retracted along the direction of cylinder head 100, engine loading When moment is excessive, the compression ratio is low, and the excessive judgement of the load transients is the moment based on gas pedal or twist grip throttle control Change is increased, when the throttle position 1 is more than engine speed 1（The throttle position 1 and engine speed 1, therein 1 is Throttle signal is converted into the value of symbol of vehicle-mounted ECU identification with tach signal, to realize that vehicle-mounted ECU turns to throttle position and engine The contrast of speed, throttle position here can be 10, and engine speed is 3, shows that the ratio that throttle adds is larger, and engine Rotating speed is not very high relatively, and both drops are than larger, and now, vehicle-mounted ECU adjusts the retraction to variable compressive piston to 3, The position of variable compressive piston is the judgement of the vehicle-mounted ECU given by the unit of the change in resistance based on position sensor, variable Compression piston position sensor is arranged on and used between cylinder head 100 and variable compressive piston 300 or on expansion link 600 The stretching value of variable compressive piston 300 is judged to detect the adjustable height of expansion link 600.That is, throttle position, starting The relation of the compressed value three of machine rotating speed and variable compressive piston is achieved with its point and ratio of numeral）, or when oil Door position 1 it is constant and in ramp when, engine speed 1 reduction be less than throttle position 1 when, the retraction vapour of variable compressive piston 300 To reduce compression ratio in cylinder head 100, increase engine power.When wherein described compression ratio is high, as shown in figure 3, described variable Compression piston 300 stretches out along cylinder direction, and with the engine loading gradually step-down, the compression ratio gradually increases, described Engine speed gradually rise up to 1 it is consistent with throttle position 1 when, the variable compressive piston 300 stretches out cylinder head 100 toward cylinder Realize raising compression ratio to reach that reduction fuel increases the effect of power in the space that the movement of faying face 120 reduces combustion chamber 110.

Wherein, when the engine loading moment is excessive, the duration of ignition steps back the regular hour by the current duration of ignition.Institute State engine loading moment it is excessive when, the excessive judgement of the load transients is to add the moment based on gas pedal or twist grip throttle control Big change, when the throttle position 1 is more than engine speed 1, or when being in ramp when throttle position is constant, engine turns When the reduction of speed 1 is less than throttle position 1, duration of ignition of vehicle-mounted ECU regulation ignition coil be allowed to it is current in the state of step back igniting, Igniting is namely postponed, prevents engine from producing pinking, increases engine power.

Further, when the engine loading gradually step-down, the duration of ignition gradually shifts to an earlier date, and is gradually restored to The current duration of ignition.With the engine loading gradually step-down, the engine speed gradually rises up to 1 and throttle position 1 When consistent, the duration of ignition of vehicle-mounted ECU regulation ignition coil is allowed to the advanced ignition in the state of current, to realize that increase is started Acc power.Further, the regulation of the duration of ignition, is the ratio based on throttle position and engine speed.And original base In pinking detection necessarily after generation, thus, it is necessary in the change of throttle position be the setting prior to pinking, so Be conducive to extension camshaft, rocking arm, when rule chain and cylinder, the service life of piston.

Wherein, when the engine loading moment is excessive, the injection time of atomizer 810 steps back one by current injection time The fixed time.When engine loading moment is excessive, the excessive judgement of the load transients is to be based on gas pedal or throttle The moment of handle increases change, when the throttle position 1 is more than engine speed 1, or is in slope when throttle position is constant During road, when the reduction of engine speed 1 is less than throttle position 1, the injection time of vehicle-mounted ECU regulation atomizer 810 is allowed to current Oil spout, that is, retarded injection are stepped back under state, to realize that the compression time increase concentration for reducing premixing is easy to igniting, increase Engine power.

Further, when the engine loading gradually step-down, the oil injection time gradually shifts to an earlier date, and is gradually restored to Current oil injection time.With the engine loading gradually step-down, the engine speed gradually rises up to 1 and throttle position 1 When consistent, the oil injection time of vehicle-mounted ECU regulation atomizer 810 is allowed to the oil spout in advance in the state of current, to realize that increase is pre- The compression time of mixing improves atomization increase engine power.Further, the regulation of the oil injection time, is based on throttle position Put the ratio with engine speed.And original detection based on rotating speed and closed loop is necessarily controlled in defined air-fuel ratio, because And, it is necessary in the change of throttle position it is the setting prior to air-fuel ratio, is so conducive to the demand to load according to engine And change power when its oil injection time reaches power when lifting loads low and loads high.

Further, described oil injection time is not to decrease or increase injection time, but with original closed-loop control Injection time is consistent, change be oil injection time in advance or postpone.

As shown in figure 5, the cylinder head of the variable compression ratio of the present invention, the cylinder head 100 includes a hydraulic cavities 510, institute State hydraulic cavities 510 to be connected with an inlet nozzle 500, a slide opening is provided with the cylinder head 100, the slide opening is used for inserting for expansion link Enter, realize the balance of the tracks of variable compressive piston and cylinder head.The hydraulic cavities are used for close to the position of combustion chamber 110 Motor and variable compressive piston are installed, that is to say, that motor and variable compressive piston are installed into after cylinder head in order, pressure-variable Cavity between contracting piston and cylinder head is exactly hydraulic cavities, and the hydraulic cavities are also the movable chamber of variable compressive piston.

As shown in fig. 6, the variable compressive piston 300 of the present invention, the fox face of the variable compressive piston 300 and cylinder head The fox face of 100 combustion chamber 110 is curved, and the fox face of the variable compressive piston 300 constitutes the second combustion chamber, second combustion Burn room and the combustion chamber 110 of cylinder head 100 is done work jointly.The periphery of the variable compressive piston 300 is provided with least one annular groove 410 and one protrude an expansion link 600 from inner face, round tube hole and are designed to nozzle holder in the cylindrical design external screw thread of expansion link, The fox face at least both sides of second combustion chamber are provided with the transfer port 310 for passing to inlet valve side and exhaust valve side, and the both sides are Fingering valve and the exhaust valve position corresponding with the second combustion chamber.Especially in the start-up conditions, as shown in figure 1, described can Variable compression piston 300 is less than combustion chamber 110 and the faying face of the variable compressive piston 300 in the fox face of combustion chamber, That is, the variable compressive piston 300 is shunk in cylinder head 100, when such design is especially advantageous for starting, in acting piston Promotion under, combustion mixture is concentrated in the fox face of the variable compressive piston 300, i.e. in the second combustion chamber, improves the The mixing specific concentration of two combustion chambers, makes cold more preferably start.And under idling mode after the engine started, as shown in Fig. 2, The fox face of second combustion chamber of the variable compressive piston 300 is combined face balance, the variable compressive piston with combustion chamber 110 The fox face in 300 the second combustion chamber fox face and the combustion chamber 110 of cylinder head 100 is curved, in this state, combustion mixture A sphere or the conical surface can be also formed along combustion chamber, makes the promotion of combustion mixture more steady, beneficial to the stability of idling.Such as Fig. 3, shown in 6, the transfer port 310 is when the variable compressive piston 300 is stretching out the fox face of combustion chamber, in high speed During acting descent of piston, inlet valve 200 is opened, and gas enters the second burning of the variable compressive piston 300 through transfer port 310 Interior, then enter exhaust valve side through transfer port 310, make the gaseous mixture in combustion chamber and the second combustion chamber more balanced, and work as When exhaust valve is opened, acting piston stroking upward pushes residual gas to exhaust valve from transfer port, makes cleaner in the second combustion chamber Prepared for storage next time incoming mixture, so as to improve the power of high speed and save fuel oil.Annular groove 410, which is used to install, to be sealed Ring 400, preferably trapezoidal mouth or the W shape mouthful of opening of the sealing ring 400, after sealing ring loads cylinder head 100, sealing ring 400 Opening under above-mentioned trapezoidal or W shapes design into sealing state, the overlapping mouth after sealing will not produce vertical clearance gap mouthful, can have Effect reduces the consumption of the sealed ring 400 of lubricating oil in hydraulic cavities 510, as shown in Figure 7.The position of atomizer will stretch pressure with variable Contracting piston position is moved but the oil spout position of atomizer is remained in the second combustion chamber 111 of variable compressive piston 300 Heart position keeps same original position with variable telescopic piston 300, and the benefit so designed will cause variable compressive piston 300 When stretching, the oil spout position of the second combustion chamber is always held at origin, in favor of improving the second combustion of variable compressive piston 300 The pinking for burning the combustion mixture of room 111 promotes efficiency.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (8)

1. a kind of automatically controlled variable compression ratio and the engine of oil spout position, including：Cylinder head, motor, variable compressive piston, motor In the combustion chamber that cylinder head 100 is arranged on variable compressive piston, wherein the variable compressive piston 300 is flexible from inner face protrusion Bar 600, expansion link 600 is designed with external screw thread and nozzle holder.

2. engine as claimed in claim 1, wherein motor include：Rotor, runner and magnet coil, runner are arranged on rotor On, rotor is sleeved on the outside of magnet coil.

3. engine as claimed in claim 2, the center of runner described further is perforation, and the perforated design is into interior spiral shell Line.

4. engine as claimed in claim 1, external screw thread described further is matched with internal thread.

5. engine as claimed in claim 1, wherein the periphery of the variable compressive piston is also provided with annular groove, it is described further Annular groove is used to install sealing ring.

6. engine as claimed in claim 1, wherein the cylinder head has an inlet nozzle, the inlet nozzle be through to it is described can Variable compression piston and the hydraulic cavities of cylinder head junction.

7. engine as claimed in claim 8, inlet nozzle described further and grease pump and cylinder head third party lubrication shape Into threeway or the inlet nozzle independent suspension.

8. engine as claimed in claim 1, wherein the motor is connected with vehicle-mounted ECU.