CN110195650A

CN110195650A - A kind of two stroke engine

Info

Publication number: CN110195650A
Application number: CN201910606094.XA
Authority: CN
Inventors: 陈红旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-09-03
Anticipated expiration: 2039-07-05
Also published as: CN110195650B

Abstract

The invention discloses a kind of two stroke engines, are related to technical field of engines, including gray iron, one device of inlet valve, inlet valve two devices, exhaust valve device；The cylinder cap lid is located on cylinder body, and discharge chambe and acting room are offered in cylinder body, and acting room is higher than discharge chambe, and compression cylinder piston is equipped in discharge chambe, and acting indoor location has acting cylinder piston；The air intake duct being connected to discharge chambe is offered on the cylinder cap, one device of inlet valve is used to control the opening and closing of air inlet pipe；The intermediate air intake duct for being connected to discharge chambe with room of doing work is also provided on the cylinder cap, inlet valve two devices are used to control the opening and closing of intermediate air intake duct；The exhaust duct of acting room connection is also provided on the cylinder cap, exhaust valve device is used to control the opening and closing of exhaust duct；Spark plug is also equipped on the cylinder cap.The present invention not only has common former two stroke engine and does work fast advantage, but also with the high-efficient advantage of former four-stroke engine.

Description

A kind of two stroke engine

Technical field

The present invention relates to technical field of engines, in particular to a kind of two stroke engine.

Background technique

Conventional automobile engine is mainly four-stroke engine at present, and the hair of motorcycle and many small-sized machines Motivation is two stroke engine.Though acting is slow, and volume is big, is not particularly suited for rubbing currently, four-stroke engine is more efficient The small-sized machines such as motorcycle use；Though and existing two stroke engine is small in size, acting is fast, its low efficiency.Therefore, now it is badly in need of A kind of small in size, fast, the high-efficient two stroke engine of acting come solve the problems, such as presently, there are.

Summary of the invention

The purpose of the present invention is to provide a kind of two stroke engines small in size, acting is fast, high-efficient.

Purpose to realize the present invention, the technical solution of use are as follows: a kind of two stroke engine, including gray iron, air inlet Door one device, inlet valve two devices, exhaust valve device；The cylinder cap lid is located on cylinder body, and discharge chambe is offered in cylinder body and is done Function room, acting room is higher than discharge chambe, and compression cylinder piston is equipped in discharge chambe, and acting indoor location has acting cylinder living Plug；The air intake duct being connected to discharge chambe is offered on the cylinder cap, one device of inlet valve is used to control the opening and closing of air inlet pipe；It is described The intermediate air intake duct for being connected to discharge chambe with room of doing work is also provided on cylinder cap, inlet valve two devices are for controlling intermediate air intake duct Opening and closing；The exhaust duct of acting room connection is also provided on the cylinder cap, exhaust valve device is used to control the opening and closing of exhaust duct；Institute It states and is also equipped with spark plug on cylinder cap, the firing tip of spark plug is located at the top of acting room.

Further, the piston chamber that the acting room includes the groove being provided on cylinder cap and is provided on cylinder body, and it is recessed Slot is opposite with piston chamber to be connected to arrangement；The outlet end of the intermediate air intake duct, the input end of exhaust duct are respectively positioned in groove.

Further, top cover, and one device of inlet valve, inlet valve two devices, exhaust are also equipped at the top of the cylinder cap Door gear is installed in top cover；The air intake duct, intermediate air intake duct, exhaust duct are bending, and one device lower end of inlet valve In the outlet end that cylinder cap extends to air intake duct, inlet valve two devices lower end extends to the outlet of intermediate air intake duct through cylinder cap In end, exhaust valve device lower end extends in exhaust duct input end through cylinder cap.

Further, the first mounting groove is offered on the lower surface of the top cover, one device of inlet valve is mounted on the first peace In tankage；One device of inlet valve includes air inlet interstage sleeve, the intake valve shaft fixed with air inlet interstage sleeve, is fixed under intake valve shaft The air inlet end socket at end；The air inlet interstage sleeve is slidably mounted in the first mounting groove, and inlet-valve spring is also equipped in intake valve shaft, And the upper end of inlet-valve spring and air inlet interstage sleeve push against, the lower end of inlet-valve spring and the upper surface of cylinder cap push against.

Further, the air inlet end socket is in coniform, and the outlet end of air intake duct is in the loudspeaker cooperated with air inlet end socket Shape.

Further, the second mounting groove is offered on the lower surface of the top cover, the second mounting groove is passed through with intermediate air intake duct It is logical；The inlet valve two devices include two axis of inlet valve, the valve cover being fixedly mounted in the second mounting groove, the lower end of valve cover It extends in the outlet end of intermediate air intake duct, and is also provided with air inlet openings corresponding with intermediate air intake duct on valve cover；It is described Two slide opening of inlet valve is also provided on valve cover, two axis upper end of inlet valve is plugged in two slide opening of inlet valve；The inlet valve two Upper springs are also equipped in slide opening, and two axis upper end of inlet valve is fixed with upper springs；The lower end of two axis of inlet valve is also The the first valve end socket for blocking valve cover is installed.

Further, the first valve end socket is in coniform, and the lower end of valve cover is in and the first valve end socket cooperates It is horn-like.

Further, stop collar is also equipped in the outlet end of the intermediate air intake duct；It is also opened on two axis of inlet valve Equipped with three slide opening of inlet valve, it is inserted with end axis in three slide opening of inlet valve, the lower end of axis is held to extend into discharge chambe；The inlet valve It is also equipped with lower springs in three slide openings, and the upper end of axis and lower springs is held to push against；The middle part of the end axis is also fixedly mounted There is duaspiracle end socket, and the upper surface of duaspiracle end socket and stop collar cooperates.

Further, the duaspiracle end socket is in inverted coniform, and the upper surface of stop collar offers and second The chamfering of valve end socket cooperation.

Further, third mounting groove is offered on the lower surface of the top cover, exhaust valve device is mounted on third installation In slot；The exhaust valve device includes exhaust interstage sleeve, exhaust valve shaft, vented cap；The exhaust interstage sleeve is slidably mounted on third Mounting groove, and exhaust valve spring is installed in third mounting groove, the lower end of the upper end and exhaust valve spring that are vented interstage sleeve pushes against；Institute The upper end and exhaust interstage sleeve for stating exhaust valve shaft are fixed, and the lower end of exhaust valve shaft extends in the input end of exhaust duct through cylinder cap, And vented cap is fixedly mounted on the lower end of exhaust valve shaft；Push rod slide opening is also provided in the exhaust valve shaft, in push rod slide opening It is inserted with push rod, and is also equipped with push rod spring in exhaust valve shaft, the upper end of push rod and push rod spring push against.

Further, the pin shaft radially extended is also equipped in the push rod slide opening, exhaust valve is run through at the both ends of pin shaft Axis is fixed with exhaust interstage sleeve；The pin shaft hole with pin shaft cooperation is also provided on the push rod, and pin shaft hole is long lumbar hole.

Further, the vented cap is in coniform, and the input end of exhaust duct is horn-like in cooperating with vented cap.

Further, valve seating is also equipped on the cylinder cap, valve seating is connected to acting room；The lower end of the cylinder body is also Shell is installed, output crank shaft is installed in shell, and output crank shaft passes through with compression cylinder piston, acting cylinder piston and shakes Arm transmission connection；The outer wall of cylinder block is also equipped with exhaust pipe, and the outlet end of exhaust duct is connected to exhaust pipe, also opens up on cylinder body There is pressure relief vent, and the outlet end of pressure relief vent is connected to exhaust pipe, the input end of pressure relief vent is connected to the lower end of acting room.

The beneficial effects of the invention are as follows,

The present invention is by the air-breathing of former two stroke engine and same stepping of both calming the anger, do work and exhaust separates, and make Row makes it not only have common former two stroke engine and does work fast advantage, but also with high-efficient excellent of former four-stroke engine Gesture.

Detailed description of the invention

Fig. 1 is the three-dimensional view of two stroke engine provided by the invention；

Fig. 2 is the cross-sectional view of two stroke engine provided by the invention；

Fig. 3 is the structure chart of one device of inlet valve in Fig. 1；

Fig. 4 is the structure chart of inlet valve two devices in Fig. 1；

Fig. 5 is the structure chart of valve cover in Fig. 4；

Fig. 6 is the structure chart of two axis of inlet valve in Fig. 4；

Fig. 7 is the structure chart of Fig. 4 middle-end axis；

Fig. 8 is the structure chart of exhaust valve device in Fig. 1；

Fig. 9 is the structure chart of exhaust valve shaft in Fig. 8；

Figure 10 is the structure chart of push rod in Fig. 8；

Figure 11 is the trip map one of two stroke engine provided by the invention；

Figure 12 is the trip map two of two stroke engine provided by the invention；

Figure 13 is the trip map three of two stroke engine provided by the invention.

Label and corresponding parts title in attached drawing:

1, cylinder body, 2, cylinder cap, 3, one device of inlet valve, 4, inlet valve two devices, 5, exhaust valve device, 6, discharge chambe, 7, It does work room, 8, compression cylinder piston, 9, acting cylinder piston, 10, air intake duct, 11, intermediate air intake duct, 12, exhaust duct, 13, the One mounting groove, the 14, second mounting groove, 15, stop collar, 16, third mounting groove, 17, valve seating, 18, shell, 19, output crank shaft, 20, exhaust pipe, 21, pressure relief vent, 22, top cover, 23, spark plug；

30, air inlet interstage sleeve, 31, intake valve shaft, 32, air inlet end socket, 33, inlet-valve spring；

40, two axis of inlet valve, 41, valve cover, 42, air inlet openings, 43, two slide opening of inlet valve, 44, upper springs, 45, One valve end socket, 46, three slide opening of inlet valve, 47, end axis, 48, lower springs, 49, duaspiracle end socket；

50, it is vented interstage sleeve, 51, exhaust valve shaft, 52, vented cap, 53, exhaust valve spring, 54, push rod slide opening, 55, push away Bar, 56, push rod spring, 57, pin shaft, 58, pin shaft hole；

70, groove, 71, piston chamber.

Specific embodiment

The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a kind of two stroke engine provided by the invention, including cylinder body 1, cylinder cap 2, inlet valve one dress Set 3, inlet valve two devices 4, exhaust valve device 5；The lid of cylinder cap 2 is located on cylinder body 1, and discharge chambe 6 is offered in cylinder body 1 and is done Function room 7, acting room 7 is higher than discharge chambe 6, and compression cylinder piston 8 is equipped in discharge chambe 6, is equipped with acting gas in room 7 of doing work The cylinder piston 9；The air intake duct 10 being connected to discharge chambe 6 is offered on the cylinder cap 2, one device 3 of inlet valve is for controlling air inlet pipe Opening and closing；The intermediate air intake duct 11 for being connected to discharge chambe 6 with room 7 of doing work, inlet valve two devices 4 are also provided on the cylinder cap 2 For controlling the opening and closing of intermediate air intake duct 11；The exhaust duct 12 that acting room 7 is connected to, exhaust valve dress are also provided on the cylinder cap 2 5 are set for controlling the opening and closing of exhaust duct 12；Spark plug 23 is also equipped on the cylinder cap 2, the firing tip of spark plug 23, which is located at, to be done The top of function room 7.

The cylinder cap 2 is located on cylinder body 1 by the fixed lid of screw；Discharge chambe 6 and acting room 7 are provided with cylinder body 1 vertically It is interior, and discharge chambe 6 and acting 7 laid out in parallel of room, compression cylinder piston 8 can move up and down in discharge chambe 6, do work cylinder piston 9 acting room 7 in can move up and down, and compression cylinder piston 8 and acting 9 synchronizing moving of cylinder piston, compression cylinder piston 8 with 6 inner wall of discharge chambe is slidably matched, and acting cylinder piston 9 and 6 inner wall of discharge chambe are slidingly sealed cooperation；The depth of the acting room 7 Greater than the depth of discharge chambe 6, in compression cylinder piston 8 and acting cylinder piston 9 in synchronizing moving, when compression cylinder piston 8 When being moved to extreme higher position with acting cylinder piston 9, compression cylinder piston 8 is located at the top of discharge chambe 6, and the cylinder piston that does work Then there is a distance between 9 and the top for room 7 of doing work, when acting cylinder piston 9 being made to be moved to 6 top of discharge chambe, discharge chambe 6 Interior compressed air is entered in acting room 7 by intermediate air inlet pipe.

The air intake duct 10 is in " ┏ " shape, and the outlet end of air intake duct 10 is located at the top of discharge chambe 6, and inlet plenum is for first pressing Air is passed through in contracting room 6, one device 3 of inlet valve controls the opening and closing of air intake duct 10, when compression cylinder piston 8 to When 6 lower end of discharge chambe is mobile, discharge chambe 6 is in suction condition, and one device 3 of inlet valve opens air intake duct 10 at this time, and air passes through Air intake duct 10 enters in discharge chambe 6, when compression cylinder piston 8 is mobile to 6 upper end of discharge chambe, is sucked into discharge chambe 6 Air is compressed, and one device 3 of inlet valve closes air intake duct 10, prevents the air entered in discharge chambe 6 from from air intake duct 10 Discharge.

The intermediate air intake duct 11 is in " П " shape, and intermediate air intake duct 11 is for being connected to discharge chambe 6 with acting room 7, specifically The input end of intermediate air intake duct 11 be located at the top of discharge chambe 6, the outlet end of intermediate air intake duct 11 is located at the top of acting room 7 Portion, when compression cylinder piston 8 is mobile to 6 upper end of discharge chambe, inlet valve two devices 4 open intermediate air intake duct 11, press at this time Air in contracting room 6 is compressed while being sent in acting room 7 by intermediate air intake duct 11, due to the cylinder piston 9 that does work With 8 synchronizing moving of compression cylinder piston, so that compressed air in discharge chambe 6 be made to enter acting room by intermediate air intake duct 11 In 7；When the igniting of spark plug 23 makes to do work the air burst in room 7, the pushed at high pressure acting cylinder piston of generation in acting room 7 9 move down, and compression cylinder piston 8 moves downward simultaneously when acting cylinder piston 9 moves down, and intermediate air intake duct 11 closes at this time It closing, air intake duct 10 is opened, make suction condition in discharge chambe 6, and the high pressure gas that explosion generates in room 7 of doing work then cannot be in Between air intake duct 11 enter discharge chambe 6.

The exhaust duct 12 is in " ┓ " shape, and the input end of exhaust duct 12 is located at the top of acting room 7, and exhaust valve device 5 is controlled The opening and closing of exhaust duct 12 processed, when compression cylinder piston 8 is mobile to 6 upper end of discharge chambe, exhaust valve device 5 is by exhaust duct 12 close, and the compressed air entered in acting room 7 by intermediate air intake duct 11 is prevented to be expelled directly out from exhaust duct 12；Spark plug When 23 igniting make the air burst in acting room 7, the pushed at high pressure acting cylinder piston 9 generated in acting room 7 is moved down, this When exhaust valve device 5 exhaust duct 12 is opened, the exhaust gas that generates is discharged from exhaust duct 12 after burning in the room 7 that makes to do work.

The acting room 7 includes the groove 70 being provided on cylinder cap 2 and the piston chamber 71 being provided on cylinder body 1, and groove 70 are connected to arrangement with piston chamber 71 relatively；The outlet end of the intermediate air intake duct 11, the input end of exhaust duct 12 are respectively positioned on groove In 70；The height of the piston chamber 71 is equal with the height of discharge chambe 6, and groove 70 is less than the opening of 71 upper end of piston chamber, and recessed The edge of slot 70 is located in the edge of 71 upper end of piston chamber, by opening up groove 70, keeps the height of acting room 7 higher, makes to compress When cylinder piston 8 and acting cylinder piston 9 are moved to highest point, compression cylinder piston 8 and the lower surface of cylinder cap 2 are supported, at this time Compressed air in discharge chambe 6 is all sent in acting room 7, though and do work cylinder piston 9 and the lower surface of cylinder cap 2 is supported Hold together, but due to having 70 structure of groove on cylinder cap 2,7 top of room that makes to do work makes discharge chambe 6 also with storing compressed air space Interior compressed air enters directly into the top of acting room 7 by intermediate air intake duct 11, makes spark plug 23 in igniting, positioned at doing The compressed air at 7 top of function room can quickly be ignited and generate explosion.

The top of the cylinder cap 2 is also equipped with top cover 22, and one device 3 of inlet valve, inlet valve two devices 4, exhaust valve fill It sets 5 and is installed in top cover 22；The air intake duct 10, intermediate air intake duct 11, exhaust duct 12 are bending, and one device of inlet valve 3 lower ends extend in the outlet end of air intake duct 10 through cylinder cap 2,4 lower end of inlet valve two devices through cylinder cap 2 extend to it is intermediate into In the outlet end of air flue 11,5 lower end of exhaust valve device extends in 12 input end of exhaust duct through cylinder cap 2.

The top cover 22 is located on the upper surface of cylinder cap 2 by the fixed lid of screw, and one device 3 of inlet valve, inlet valve two fill 4, exhaust valve device 5 is set to be fixedly mounted on cylinder cap 2, and the lower end of one device 3 of inlet valve through the top surface of cylinder cap 2 to downward It extends in air intake duct 10, the opening and closing of air intake duct 10 is controlled to realize；The lower end of inlet valve two devices 4 is run through The top surface of cylinder cap 2 extends downward into intermediate air intake duct 11, controls to realize to the opening and closing of intermediate air intake duct 11 System；The lower end of exhaust valve device 5 extends downward into exhaust duct 12 through the top surface of cylinder cap 2, to realize to exhaust duct 12 Opening and closing are controlled；Not only facilitate the installation of one device 3, inlet valve two devices 4, exhaust valve device 5 of inlet valve, and anti- Only one device 3 of inlet valve, inlet valve two devices 4, exhaust valve device 5 generate inclination after mounting, to make air intake duct 10, centre The unlatching of air intake duct 11 and exhaust duct 12, closing precision are higher, make the sealing of air intake duct 10, intermediate air intake duct 11 and exhaust duct 12 Property is more preferable.

As shown in figure 3, offering the first mounting groove 13 on the lower surface of the top cover 22, one device 3 of inlet valve is mounted on In first mounting groove 13；One device 3 of inlet valve include air inlet interstage sleeve 30, the intake valve shaft 31 fixed with air inlet interstage sleeve 30, It is fixed on the air inlet end socket 32 of 31 lower end of intake valve shaft；The air inlet interstage sleeve 30 is slidably mounted in the first mounting groove 13, air inlet Inlet-valve spring 33 is also equipped on door-hinge 31, and the upper end of inlet-valve spring 33 and air inlet interstage sleeve 30 push against, inlet-valve spring 33 lower end and the upper surface of cylinder cap 2 push against.

First mounting groove 13 is cylindrical, and air inlet interstage sleeve 30 is in the form of annular discs, the diameter of air inlet interstage sleeve 30 and the first peace The internal diameter clearance fit of tankage 13 not only enables air inlet interstage sleeve 30 sufficiently be moved up and down in the first mounting groove 13, and makes In the process of moving up and down, the first mounting groove 13 can be oriented to the movement of air inlet interstage sleeve 30 air inlet interstage sleeve 30, effectively prevent The run-off the straight in moving process of air inlet interstage sleeve 30；The upper end of the intake valve shaft 31 is plugged in air inlet interstage sleeve 30, and air inlet The central axis of the central axis of door-hinge 31 and air inlet interstage sleeve 30 on the same line, specifically, the upper end of intake valve shaft 31 with Air inlet interstage sleeve 30 is fixed by pin, and the lower end of intake valve shaft 31 is run through 2 top surface of cylinder cap vertically and extended in air intake duct 10.Institute It states air inlet end socket 32 to be integrally formed with intake valve shaft 31, and air inlet end socket 32 is located at the lower section of the outlet of air intake duct 10, air inlet envelope First 32 cooperate with the outlet end of air intake duct 10, pass through the movement of air inlet end socket 32, realize the opening and closing to air intake duct 10.Institute It states inlet-valve spring 33 to be set in intake valve shaft 31, the upper end of 31 spring of intake valve shaft and the lower end surface of air inlet interstage sleeve 30 are supported Tightly, the lower end of intake valve shaft 31 and the upper surface of cylinder cap 2 push against.

When needing to be pumped into compressed air into discharge chambe 6, compression cylinder piston 8 moves down in discharge chambe 6, at this time Negative pressure state is in discharge chambe 6, as compression cylinder piston 8 moves down, the negative pressure in discharge chambe 6 by air inlet end socket 32 to Discharge chambe 6 is pumped, and air inlet end socket 32, which moves down, drives intake valve shaft 31 mobile, to make air inlet interstage sleeve 30 with intake valve shaft 31 It moves downward simultaneously, inlet-valve spring 33 is compressed, at this point, air inlet end socket 32 loses the closure to air intake duct 10, makes air intake duct 10 are opened, to being pumped air by air intake duct 10 to discharge chambe 6；When compression cylinder piston 8 is moved to discharge chambe 6 When lower end, air is full of discharge chambe 6, the pressure in discharge chambe 6 and external air pressure balance at this time, and air inlet end socket 32 is downward Suction, inlet-valve spring 33 push air inlet interstage sleeve 30 to the movement of 13 upper end of the first mounting groove, air inlet interstage sleeve by the elastic force of itself 30 when moving up, and air inlet interstage sleeve 30 drives intake valve shaft 31 to move up, to make to be fixed on 31 lower end of intake valve shaft Air inlet end socket 32, which synchronizes, to move up, and blocks air inlet end socket 32 to the outlet end of air intake duct 10 automatically, makes air intake duct 10 It is automatically closed.It controls the opening and closing of air intake duct 10 more convenient, and during air intake duct 10 opens and closes, is not required to It wants any driving element can be realized, finally substantially reduces engine cost.

The air inlet end socket 32 is in coniform, and the outlet end of air intake duct 10 is horn-like in cooperating with air inlet end socket 32； The maximum gauge of the air inlet end socket 32 and the maximum gauge of 10 outlet end of air intake duct cooperate, and make air inlet end socket 32 to air intake duct When 10 outlet ends are blocked, the lower surface of air inlet end socket 32 is concordant with the lower surface of cylinder cap 2, to make the top of discharge chambe 6 It is horizontal, when compression cylinder piston 8 is moved to the top of discharge chambe 6, upper end and the cylinder cap 2 of compression cylinder piston 8 Lower surface fitting avoids the presence of residual in discharge chambe 6 so that the compressed air in discharge chambe 6 be made to be all introduced into acting room 7 Air.

As shown in Figures 4 to 7, offer the second mounting groove 14 on the lower surface of the top cover 22, the second mounting groove 14 with Intermediate air intake duct 11 penetrates through；The inlet valve two devices 4 include two axis 40 of inlet valve, are fixedly mounted in the second mounting groove 14 Valve cover 41, the lower end of valve cover 41 extend in the outlet end of intermediate air intake duct 11, and are also provided with on valve cover 41 Between the corresponding air inlet openings 42 of air intake duct 11；Two slide opening 43 of inlet valve, two axis 40 of inlet valve are also provided on the valve cover 41 Upper end is plugged in two slide opening 43 of inlet valve；Upper springs 44, and inlet valve two are also equipped in two slide opening 43 of inlet valve 40 upper end of axis and upper springs 44 push against；The lower end of two axis 40 of inlet valve is also equipped with the first valve for blocking valve cover 41 End socket 45.

Second mounting groove 14 is cylindrical, and the second mounting groove 14 is located on the lower surface of top cover 22, the second mounting groove 14 internal diameter is identical as the intermediate internal diameter of air intake duct 11, keeps the outlet side of the second mounting groove 14 and intermediate air intake duct 11 perpendicular in one Straight straight-tube shape；The valve cover 41 is fixed in the second mounting groove 14 by dress by force, and the lower end of valve cover 41 extends to centre In the outlet end of air intake duct 11,41 outer wall of valve cover and intermediate 11 outlet end of air intake duct sealing cooperate；The valve cover 41 is in sky The heart is cylindric, and the upper end of valve cover 41 is in closed, and the lower end of valve cover 41 is in open state；The air inlet openings 42 with it is intermediate into The horizontal part of air flue 11 is corresponding, is connected to the horizontal part of intermediate air intake duct 11 with the inside of valve cover 41 by air inlet openings 42, Make the compressed air entered in valve cover 41 by intermediate air intake duct 11, enters intermediate air intake duct from the lower end of valve cover 41 In 11 outlet end, and finally it is discharged from the outlet end of intermediate air intake duct 11.

Two slide opening 43 of inlet valve is located at the top of valve cover 41, and two slide opening 43 of inlet valve is not through valve cover 41 Top surface, two slide opening 43 of inlet valve runs through the top surface of valve cover 41 in order to prevent, and a rank is fixedly mounted at the top of valve cover 41 Terraced axis, multi-diameter shaft are wholely set with valve cover 41, and the internal diameter of the major diameter of multi-diameter shaft and the second mounting groove 14 cooperates, and keep multi-diameter shaft strong Dress is fixed in the second mounting groove 14, to facilitate opening up for two slide opening 43 of inlet valve；The center of two slide opening 43 of inlet valve On the same line, upper springs 44 are fixedly mounted in two slide opening 43 of inlet valve the central axis of axis and valve cover 41, on The lower end of portion's spring 44 and two axis 40 of inlet valve are fixed；Two axis 40 of inlet valve and two slide opening of inlet valve, 43 clearance fit, make Two axis 40 of inlet valve adequately slides up and down in two slide opening 43 of inlet valve；The first valve end socket 45 is fixed on inlet valve two The lower end of axis 40, and the first valve end socket 45 is integrally formed with two axis 40 of inlet valve, and the first valve end socket 45 is in valve cover 41 Lower end cooperation, thus make the first valve end socket 45 realization 41 lower end of valve cover is blocked, with this, make the first valve end socket 45 realize the closure to intermediate air intake duct 11.

When the air in discharge chambe 6 is sent into acting room 7 by intermediate air intake duct 11, intermediate air intake duct 11 is entered at this time Interior air pressure is larger, makes to enter the indoor compressed air of intermediate air inlet and the first valve end socket 45 is pushed to move down, the Two axis of inlet valve, 40 synchronizing moving is driven when one valve end socket 45 moves down, and is elongated upper springs 44, is finally made first Valve end socket 45 loses the cooperation with 41 lower end of valve cover, and the lower end of valve cover 41 is opened, and makes to enter intermediate air intake duct 11 Interior compressed air enters the outlet end of intermediate air intake duct 11 by valve cover 41, and finally from the outlet of intermediate air intake duct 11 End discharge enters the compressed air in discharge chambe 6 in acting room 7, realizes the opening of intermediate air intake duct 11；When acting room 7 Interior compressed air is ignited generation explosion time, and the air pressure done work in room 7 is larger, and the air pressure done work in room 7 pushes the first valve End socket 45 moves up, while the air pressure done work in room 7 pushes the first valve end socket 45, bullet that upper springs 44 pass through itself Power pulls two axis 40 of inlet valve to move up, and passes through air pressure pushing away to the first valve end socket 45 in the elastic force of spring and acting room 7 It is dynamic, so that the first valve end socket 45 is pushed against the lower end of valve cover 41, block the lower end of valve cover 41, at this time valve cover 41 with The outlet end of intermediate air intake duct 11 is blocked, and the air entered in valve cover 41 cannot be arranged from the outlet end of intermediate air intake duct 11 Out, the closure to intermediate air intake duct 11 is realized.

The first valve end socket 45 is in coniform, and the lower end of valve cover 41 is in the loudspeaker cooperated with the first valve end socket 45 Shape；Specifically, the lower end of the inner wall of valve cover 41 is in horn-like, pass through matching for the first valve end socket 45 and 41 lower end of valve cover It closes, when pushing against the first valve end socket 45 with 41 lower end of valve cover, the first valve end socket 45, which seals 41 lower end of valve cover, to be cooperated, Make the better tightness of 41 lower end of valve cover, thus when pushing against the first valve end socket 45 with 41 lower end of valve cover, intermediate air inlet The sealing performance in road 11 is higher.

Stop collar 15 is also equipped in the outlet end of the intermediate air intake duct 11；It is also provided on two axis 40 of inlet valve Three slide opening 46 of inlet valve, end axis 47 is inserted in three slide opening 46 of inlet valve, and the lower end of end axis 47 extends into discharge chambe 6；It is described It is also equipped with lower springs 48 in three slide opening 46 of inlet valve, and holds the upper end of axis 47 and lower springs 48 fixed；The end axis 47 Middle part be also fixedly installed with duaspiracle end socket 49, and the upper surface of duaspiracle end socket 49 and stop collar 15 cooperates.

The stop collar 15 is integrally disposed upon on the inner wall of intermediate 11 outlet end of air intake duct, i.e., stop collar 15 is located at valve cover 41 lower section；Three slide opening 46 of inlet valve is cylindrical hole, the central axis and two axis 40 of inlet valve of 31 3 slide opening of intake valve shaft Central axis on the same line, and three slide opening 46 of inlet valve is provided on the lower end surface of two axis 40 of inlet valve, inlet valve three The upper end of slide opening 46 does not run through the upper end of two axis 40 of inlet valve, and the first valve end socket 45 is run through in the lower end of three slide opening 46 of inlet valve； The major diameter of the lower springs 48 is less than the internal diameter of three slide opening 46 of inlet valve, and lower springs 48 are movably arranged on inlet valve three and slide In hole 46；The diameter of the end axis 47 and the internal diameter clearance fit of three slide opening 46 of inlet valve make to hold axis 47 in three slide opening of inlet valve It can adequately be moved up and down in 46, the lower end of end axis 47 extends in acting room 7 through stop collar 15；The duaspiracle end socket 49 are wholely set with end axis 47, make duaspiracle end socket 49 and hold the connection of axis 47 stronger；The duaspiracle end socket 49 Lower end surface and stop collar 15 upper surface push against cooperate, make the lower end surface of duaspiracle end socket 49 and the upper surface of stop collar 15 When abutting, duaspiracle end socket 49 realizes the closure to stop collar 15, thus realize the closure to intermediate air intake duct 11, realization pair The closing of intermediate air intake duct 11.

When compression cylinder piston 8 and acting cylinder piston 9 move downward simultaneously, air is sucked in discharge chambe 6, room of doing work Exhaust gas in 7 is discharged, and the first valve end socket 45 blocks 41 lower end of valve cover at this time, closes intermediate air intake duct 11 Close, duaspiracle end socket 49 is not affected by any active force at this time, lower springs 48 by itself elastic force, promote-side axis 47 along into Three slide opening 46 of valve moves down, and the duaspiracle end socket 49 being fixed on the axis 47 of end at this time is moved downward simultaneously with end axis 47, To make duaspiracle end socket 49 be pushed against on stop collar 15, make the lower surface of duaspiracle end socket 49 and the upper end of stop collar 15 Face sealing is adjacent to, and is sealed duaspiracle end socket 49 by the upper end of stop collar 15, at this time the first valve end socket 45 and second Valve end socket 49 simultaneously blocks intermediate air intake duct 11, is closed intermediate air intake duct 11 completely, can effectively prevent in acting room 7 Remaining exhaust gas enters in discharge chambe 6.

When compression cylinder piston 8 with acting cylinder piston 9 synchronize move up when, air intake duct 10 is closed by air inlet end socket 32 It closes, the air in discharge chambe 6 is mobile to acting room 7 by intermediate air intake duct 11, and the first valve end socket 45 is by valve cover 41 at this time Lower end open, but since lower springs 48 are by the elastic force of itself, keep duaspiracle end socket 49 still to intermediate air intake duct 11 closure can not enter though the air in discharge chambe 6 can enter intermediate air intake duct 11 at this time from intermediate air intake duct 11 Into acting room 7；As compression cylinder piston 8 and acting cylinder piston 9 continue to move up, acting cylinder piston 9 and end axis The mobile promote-side axis 47 of 47 lower end in contact, acting cylinder piston 9 moves up, and end axis 47 moves up, and makes to be fixed on end Duaspiracle end socket 49 on axis 47 is synchronized with end axis 47 to move up, and duaspiracle end socket 49 is made to lose supporting to stop collar 15 Tightly, so that the intermediate air intake ducts 11 of 49 pairs of duaspiracle end socket be made to open, the first valve end socket 45 and duaspiracle end socket 49 at this time Be in opening state, be fully opened intermediate air intake duct 11, thus make the air in discharge chambe 6 smoothly pass through it is intermediate into Air flue 11 enters acting room 7.

The duaspiracle end socket 49 is in inverted coniform, and the upper surface of stop collar 15 offers and duaspiracle seals The chamfering of first 49 cooperation；Specifically, the upper end of 15 inner wall of stop collar, in horn-like, the maximum gauge diameter of duaspiracle end socket 49 is big In the minimum diameter of stop collar 15, and the maximum gauge of duaspiracle end socket 49 is less than the internal diameter of intermediate 11 outlet end of air intake duct, It move up and down duaspiracle end socket 49 can not only in the outlet end of intermediate air intake duct 11 sufficiently, and seal duaspiracle First 49 can the upper surface effectively to stop collar 15 block, make duaspiracle end socket 49 to the plugging effect of stop collar 15, from And close duaspiracle end socket 49 effectively to intermediate air intake duct 11, and make duaspiracle end socket 49 to intermediate air intake duct After 11 block, the sealing performance of intermediate air intake duct 11 is more preferable.

As shown in Fig. 8 to Figure 10, third mounting groove 16 is offered on the lower surface of the top cover 22, exhaust valve device 5 is pacified In third mounting groove 16；The exhaust valve device 5 includes exhaust interstage sleeve 50, exhaust valve shaft 51, vented cap 52；The row Gas interstage sleeve 50 is slidably mounted on third mounting groove 16, and exhaust valve spring 53 is equipped in third mounting groove 16, is vented interstage sleeve 50 Upper end and exhaust valve spring 53 lower end push against；The upper end of the exhaust valve shaft 51 and exhaust interstage sleeve 50 are fixed, exhaust valve shaft 51 lower end extends in the input end of exhaust duct 12 through cylinder cap 2, and vented cap 52 is fixedly mounted on exhaust valve shaft 51 Lower end；It is also provided with push rod slide opening 54 in the exhaust valve shaft 51, push rod 55, and exhaust valve shaft 51 are inserted in push rod slide opening 54 It is inside also equipped with push rod spring 56, the upper end of push rod 55 and push rod spring 56 push against.

The third mounting groove 16 is located on the lower surface of top cover 22, and third mounting groove 16 is cylindrical；The exhaust Interstage sleeve 50 is annular in shape, is vented the outer wall and 16 inner wall clearance fit of third mounting groove of interstage sleeve 50, makes to be vented interstage sleeve 50 in third It can sufficiently lower upper movement in mounting groove 16；The upper end of the exhaust valve shaft 51 be plugged in exhaust interstage sleeve 50 on, and with exhaust interstage sleeve 50 are fixedly connected using pin, make exhaust valve shaft 51 when moving up and down, and exhaust valve shaft 51 can be led by being vented interstage sleeve 50 To moving exhaust valve shaft 51 in same vertical line always, prevent the run-off the straight in the process of moving up and down of exhaust valve shaft 51； The lower end of the exhaust valve shaft 51 extends in the inlet end of exhaust duct 12 through the top surface of cylinder cap 2, and in exhaust valve shaft 51 The central axis of mandrel line and 12 inlet end of exhaust duct is on the same line；The exhaust valve shaft 51 is integrally set with vented cap 52 It sets, keeps the connection between exhaust valve shaft 51 and vented cap 52 stronger, prevent vented cap 52 from falling from exhaust valve shaft 51 It falls；The exhaust valve spring 53 is mounted on the slot bottom of third mounting groove 16, lower end and the exhaust interstage sleeve 50 of exhaust valve spring 53 Upper surface pushes against, and by the elastic force of exhaust valve spring 53 itself, so that exhaust door pocket 41 is pushed against the upper surface of cylinder cap 2, to make For exhaust valve shaft 51 in the case where being not affected by pressure condition, exhaust valve shaft 51 is in extreme lower position, thus make do work cylinder piston 9 not to When upper mobile, vented cap 52 is not pushed against with 12 input end of exhaust duct, keeps exhaust duct 12 in the open state always.

When acting cylinder piston 9 is during moving up, acting cylinder piston 9 applies one upwards to vented cap 52 Thrust, the pressure being subject to passes to exhaust valve shaft 51 by vented cap 52, and exhaust valve shaft 51 passes to exhaust interstage sleeve 50, exhaust Interstage sleeve 50 pushes exhaust valve spring 53, compresses exhaust valve spring 53, to make vented cap 52 and 12 input end of exhaust duct It pushes against, to realize the closing to exhaust duct 12；When acting cylinder piston 9 is moving down, vented cap 52 loses acting gas The thrust of the cylinder piston 9, exhaust valve spring 53 push exhaust valve shaft 51 to move down by own resilient, fixed with exhaust valve shaft 51 Vented cap 52 moved downward simultaneously with exhaust valve shaft 51, make vented cap 52 lose to 12 input end of exhaust duct push against, from And realize automatically opening to exhaust duct 12.

The push rod slide opening 54 is provided on the lower end surface of exhaust valve shaft 51, and vented cap is run through in the lower end of push rod slide opening 54 52 straight down, and the central axis of push rod slide opening 54 and the central axis of exhaust valve shaft 51 are on the same line；The push rod Spring 56 is mounted on the bottom hole of push rod slide opening 54, and the lower end of push rod spring 56 and the upper end of push rod 55 cooperate, and pass through push rod bullet The thrust of spring 56 itself, makes push rod 55 in the case where being not affected by pressure, and the lower end of push rod 55 extends into acting room 7, when pushing away Bar 55 be under pressure make push rod spring 56 completely compress when, and vented cap 52 to exhaust duct 12 completely block when, push rod 55 Lower end is concordant with the lower surface of cylinder cap 2；The push rod 55 can move up and down in push rod slide opening 54, but push rod 55 cannot be from push rod It falls off in slide opening 54, so that push rod 55 be effectively prevent to fall in acting room 7.

By installing push rod 55, make to do work cylinder piston 9 when moving up, acting cylinder piston 9 first pushes push rod 55 It moving up, for push rod 55 when moving up, push rod 55 applies pressure to push rod spring 56, and push rod spring 56 is compressed, with Acting cylinder piston 9 continue to move up, push rod spring 56 is fully compressed, and the thrust for applying push rod 55 uses row On air valve shaft 51, so that exhaust valve shaft 51 be made to move up, keep the mobile drive vented cap 52 of exhaust valve shaft 51 mobile, exhaust Pressure is passed to exhaust interstage sleeve 50 by door-hinge 51, and exhaust interstage sleeve 50 pushes exhaust valve spring 53, compresses exhaust valve spring 53, To make vented cap 52 and 12 input end of exhaust duct push against, to realize the closing to exhaust duct 12；When acting cylinder piston 9 When moving down, acting cylinder piston 9 loses the thrust to push rod 55, and push rod spring 56 pushes push rod 55 to reset, with acting Cylinder piston 9 continues to move down, and exhaust valve shaft 51 loses the thrust of push rod 55, and exhaust valve spring 53 is pushed away by the elastic force of itself Dynamic exhaust valve shaft 51 resets, and exhaust valve shaft 51, which resets, drives vented cap 52 to reset, so that exhaust duct 12 be made to be opened automatically.

The pin shaft 57 radially extended is also equipped in the push rod slide opening 54, exhaust valve shaft 51 is run through at the both ends of pin shaft 57 It is fixed with exhaust interstage sleeve 50；The pin shaft hole 58 cooperated with pin shaft 57 is also provided on the push rod 55, and pin shaft hole 58 is long waist Hole；The central axis of the pin shaft 57 extends along the diametrical direction of exhaust valve shaft 51, and the both ends of pin shaft 57 extend through exhaust Door-hinge 51 is radially extended to exhaust valve shaft 51, is plugged in the both ends of pin shaft 57 in exhaust interstage sleeve 50, is not only realized pin shaft 57 installation, and make to be vented between interstage sleeve 50 and exhaust valve shaft 51 and achieve a fixed connection；The pin shaft hole 58 is through-hole, pin shaft hole 58 are located on the periphery of push rod 55, and 58 length direction of pin shaft hole is consistent with the radial direction of pin shaft 57；The pin shaft hole 58 Length is greater than the diameter of pin shaft 57, and after so that push rod 55 is upwarded pressure, push rod 55 can be by the guiding of pin shaft 57 to moving up Dynamic certain distance, when push rod 55 cannot be continued to move up by the blocking of pin shaft 57, the power of push rod 55 passes to again at this time Exhaust valve shaft 51, so that valve end socket be made to block the input end of exhaust duct 12；The pin shaft 57 can be effectively to push rod 55 Limited, can not only anti-throw-out lever 55 fall off out of push rod slide opening 54, and ensure that push rod 55 can push be afraid of air valve shaft it is upward It pushes against.

For the vented cap 52 in coniform, the input end of exhaust duct 12 is horn-like in cooperating with vented cap 52；Tool Body, the inner wall of 12 input end of exhaust duct is in horn-like, and the maximum gauge of the vented cap 52 and 12 input end of exhaust duct Maximum gauge cooperation, make vented cap 52 when blocking to 12 input end of exhaust duct, the lower surface of vented cap 52 with The lower surface of cylinder cap 2 is concordant, to make the slot bottom of groove 70 in horizontal, when acting cylinder piston 9 is moved to acting room 7 When the top, the upper end of acting cylinder piston 9 is bonded with the lower surface of cylinder cap 2, to keep the compressed air in discharge chambe 6 whole It enters in groove 70, the compressed air for entering acting room 7 is prevented to be expelled directly out from exhaust duct 12.

Valve seating 17 is also equipped on the cylinder cap 2, valve seating 17 is connected to acting room 7；Also pacify the lower end of the cylinder body 1 Equipped with shell 18, output crank shaft 19, and output crank shaft 19 and compression cylinder piston 8, acting cylinder piston 9 are installed in shell 18 Connected by rocking-arm driving；1 outer wall of cylinder body is also equipped with exhaust pipe 20, and the outlet end of exhaust duct 12 and exhaust pipe 20 connect It is logical, pressure relief vent 21 is also provided on cylinder body 1, and the outlet end of pressure relief vent 21 is connected to exhaust pipe 20, the input end of pressure relief vent 21 It is connected to the lower end of acting room 7.

The valve seating 17, which is threadably secured, to be mounted on cylinder cap 2；The shell 18 is pacified with cylinder body 1 by the way that screw is fixed Dress, and the top of shell 18 is also provided with two through-holes, two through-holes are connected to acting room 7, discharge chambe 6 respectively；The output Crankshaft 19 is rotatably installed on shell 18 by bearing, and the axis direction of output crank shaft 19 and the axis direction of acting room 7 hang down Directly, compression cylinder piston 8, acting cylinder piston 9 are connect by using rocker arm with output crank shaft 19, is turning output crank shaft 19 When dynamic, output crank shaft 19 is moved up and down by compression cylinder piston 8, acting cylinder piston 9, to make compression cylinder piston 8 move up and down in discharge chambe 6, and acting cylinder piston 9 moves up and down in acting room 7.

The exhaust pipe 20 is fixedly mounted on the outer wall of cylinder body 1 by ring flange, and exhaust pipe 20 is connected to exhaust duct 12, The exhaust gas that exhaust duct 12 is discharged is expelled directly out by exhaust pipe 20；The pressure relief vent 21 is located at the middle part of acting room 7, pressure relief vent 21 are connected to exhaust pipe 20, pressure relief vent 21 can make do work cylinder piston 9 to acting 7 lower end certain distance of room after, pressure relief vent 21 Acting room 7 is connected to exhaust pipe 20, pressure relief vent 21 can carry out pressure release to acting room 7, keep the pressure done work in room 7 quickly Balance.

As shown in Figure 11 to Figure 13, when output crank shaft 19 rotates, output crank shaft 19 drives compression cylinder piston 8, acting Cylinder piston 9, which synchronizes, to move up, and in one device 3 of inlet valve, inlet-valve spring 33 pushes air inlet gear by the elastic force of itself Set 30 is mobile to 13 upper end of the first mounting groove, air inlet interstage sleeve 30 when moving up, air inlet interstage sleeve 30 drive intake valve shaft 31 to Upper movement moves up so that the air inlet end socket 32 for being fixed on 31 lower end of intake valve shaft be made to synchronize, and keeps air inlet end socket 32 automatic right The outlet end of air intake duct 10 is blocked, and air intake duct 10 is automatically closed, and the air in discharge chambe 6 is made to pass through intermediate air intake duct 11 It is mobile to acting room 7.

At this point, the air pressure in intermediate air intake duct 11 in inlet valve two devices 4 is larger, make to enter intermediate inlet plenum Interior compressed air pushes the first valve end socket 45 to move down, and two axis of inlet valve is driven when the first valve end socket 45 moves down 40 synchronizing movings, are elongated upper springs 44, and the first valve end socket 45 is finally made to lose the cooperation with 41 lower end of valve cover, gas The lower end of door pocket 41 is opened, and the compressed air entered in intermediate air intake duct 11 is made to enter intermediate air inlet by valve cover 41 The outlet end in road 11, and be finally discharged from the outlet end of intermediate air intake duct 11, so that the compressed air in discharge chambe 6 is entered acting In room 7, realizes the opening of intermediate air intake duct 11, enter the compressed air entered in intermediate air intake duct 11 by valve cover 41 To the outlet end of intermediate air intake duct 11.

As compression cylinder piston 8, acting cylinder piston 9 continue to move up, under acting cylinder piston 9 and end axis 47 The mobile promote-side axis 47 of end in contact, acting cylinder piston 9 moves up, and end axis 47 moves up, and makes to be fixed on the axis 47 of end Duaspiracle end socket 49 synchronize and move up with end axis 47, so that duaspiracle end socket 49 is lost the abutting to stop collar 15, from And 49 pairs of duaspiracle end socket intermediate air intake ducts 11 are opened, the first valve end socket 45 is in duaspiracle end socket 49 at this time Opening state is fully opened intermediate air intake duct 11, so that the air in discharge chambe 6 be made smoothly to pass through intermediate air intake duct 11 Into acting 7 top of room.

When compression cylinder piston 8, acting cylinder piston 9 are moved to the top, due to the 9 opposite end axis 47 of cylinder piston that does work It compresses completely, end axis 47 not only pushes against lower springs 48, and the thrust being subject to also is passed to inlet valve two by lower springs 48 Axis 40, make two axis 40 of inlet valve compress upper springs 44, two axis 40 of inlet valve when moving up, the first valve end socket 45 with into Two axis 40 of valve, which synchronizes, to move up, to make the first inlet valve end socket block the lower end of valve cover 41, thus in making Between air intake duct 11 be closed, at this time the compressed air in discharge chambe 6 cannot pass through intermediate air intake duct 11 enter discharge chambe 6.

And while compression cylinder piston 8 moves up, as compression cylinder piston 8 moves up, compression cylinder is living Plug 8 first pushes push rod 55 to move up, and for push rod 55 when moving up, push rod 55 applies pressure to push rod spring 56, makes push rod Spring 56 is compressed, and with continuing to move up for acting cylinder piston 9, push rod spring 56 is fully compressed, and applies push rod 55 The thrust added is used in exhaust valve shaft 51, so that exhaust valve shaft 51 be made to move up, arranges the mobile drive of exhaust valve shaft 51 Sealing gland head 52 is mobile, and pressure is passed to exhaust interstage sleeve 50 by exhaust valve shaft 51, and exhaust interstage sleeve 50 pushes exhaust valve spring 53, makes to arrange Valve spring 53 is compressed, to make vented cap 52 and 12 input end of exhaust duct push against, to realize the pass to exhaust duct 12 It closes.

At this point, spark plug 23 is lighted a fire, the air to do work in room 7 is made to be ignited and generate explosion, the pressure done work in room 7 is prominent So becoming larger, the pressure in room 7 of doing work pushes acting cylinder piston 9 to move down, when acting cylinder piston 9 moves down, compression Cylinder piston 8 moves downward simultaneously.At this point, be in negative pressure state in discharge chambe 6, the negative pressure in discharge chambe 6 by air inlet end socket 32 to Discharge chambe 6 is pumped, and air inlet end socket 32, which moves down, drives intake valve shaft 31 mobile, to make air inlet interstage sleeve 30 with intake valve shaft 31 It moves downward simultaneously, inlet-valve spring 33 is compressed, at this point, air inlet end socket 32 loses the closure to air intake duct 10, makes air intake duct 10 are opened, to being pumped air by air intake duct 10 to discharge chambe 6.

As compression cylinder piston 8 and acting cylinder piston 9 move down, intermediate air intake duct 11 is in negative as compression Pressure condition, when compression in negative pressure pump the first valve end socket 45 and move up, make the first valve end socket 45 under valve cover 41 End pushes against, and upper springs 44 are compressed at this time, and the first valve end socket 45 blocks 41 lower end of valve cover, the first valve end socket 45 realizations block intermediate air intake duct 11.

While 45 pairs of the first valve end socket intermediate air intake ducts 11 block, the end axis 47 in inlet valve two devices 4 is lost The pressure of acting cylinder piston 9, the elastic force promote-side axis 47 that lower springs 48 synchronize itself move down, and fix with end axis 47 Duaspiracle end socket 49 moves downward simultaneously, and duaspiracle end socket 49 and 15 upper surface of stop collar push against, and makes duaspiracle end socket 49 pairs of 15 upper ends of stop collar block, and block 49 pairs of duaspiracle end socket intermediate air intake ducts 11.

When the cylinder piston 9 that does work moves down, the air pressure done work in room 7 is gradually reduced, meanwhile, do work cylinder piston 9 The thrust to push rod 55 is lost, push rod spring 56 pushes push rod 55 to reset, and as acting cylinder piston 9 continues to move down, arranges Air valve shaft 51 loses the thrust of push rod 55, and exhaust valve spring 53 pushes exhaust valve shaft 51 to reset by the elastic force of itself, exhaust valve Axis 51, which resets, drives vented cap 52 to reset, so that exhaust duct 12 be made to be opened automatically, makes the exhaust gas that burning generates in acting room 7 It is drained into exhaust pipe 20 by exhaust duct 12, engine is finally discharged；As acting cylinder piston 9 continues to move down, unload Exhaust pipe 20 is connected to by pressure hole 21 with acting room 7, at this time 21 pairs of 7 fast pressure reliefs of acting room of pressure relief vent, and makes the pressure done work in room 7 Power keeps balance.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of two stroke engine, which is characterized in that including gray iron, one device of inlet valve, inlet valve two devices, row Valve gear；The cylinder cap lid is located on cylinder body, and discharge chambe and acting room are offered in cylinder body, and acting room is higher than discharge chambe, and Compression cylinder piston is installed, acting indoor location has acting cylinder piston in discharge chambe；It offers and compresses on the cylinder cap The air intake duct of room connection, one device of inlet valve are used to control the opening and closing of air inlet pipe；Be also provided on the cylinder cap make discharge chambe with The intermediate air intake duct of acting room connection, inlet valve two devices are used to control the opening and closing of intermediate air intake duct；It is also opened up on the cylinder cap There is the exhaust duct of acting room connection, exhaust valve device is used to control the opening and closing of exhaust duct；It is also equipped with spark plug on the cylinder cap, The firing tip of spark plug is located at the top of acting room.

2. two stroke engine according to claim 1, which is characterized in that the acting room includes being provided on cylinder cap Groove and the piston chamber being provided on cylinder body, and groove is opposite with piston chamber is connected to arrangement；The outlet end of the intermediate air intake duct, The input end of exhaust duct is respectively positioned in groove.

3. two stroke engine according to claim 1, which is characterized in that it is also equipped with top cover at the top of the cylinder cap, And one device of inlet valve, inlet valve two devices, exhaust valve device are installed in top cover；The air intake duct, intermediate air intake duct, exhaust Road is bending, and one device lower end of inlet valve extends in the outlet end of air intake duct through cylinder cap, under inlet valve two devices End extends in the outlet end of intermediate air intake duct through cylinder cap, and exhaust valve device lower end extends to exhaust duct input end through cylinder cap It is interior.

4. two stroke engine according to claim 3, which is characterized in that offer first on the lower surface of the top cover Mounting groove, one device of inlet valve are mounted in the first mounting groove；One device of inlet valve includes air inlet interstage sleeve and air inlet interstage sleeve Fixed intake valve shaft, the air inlet end socket for being fixed on intake valve shaft lower end；The air inlet interstage sleeve is slidably mounted on the first mounting groove It is interior, inlet-valve spring is also equipped in intake valve shaft, and the upper end of inlet-valve spring and air inlet interstage sleeve push against, inlet-valve spring Lower end and the upper surface of cylinder cap push against；The air inlet end socket is in coniform, and the outlet end of air intake duct is in and air inlet end socket cooperates It is horn-like.

5. two stroke engine according to claim 3, which is characterized in that offer second on the lower surface of the top cover Mounting groove, the second mounting groove and intermediate air intake duct penetrate through；The inlet valve two devices include two axis of inlet valve, are fixedly mounted on Valve cover in two mounting grooves, the lower end of valve cover extend in the outlet end of intermediate air intake duct, and are also provided on valve cover Air inlet openings corresponding with intermediate air intake duct；Two slide opening of inlet valve is also provided on the valve cover, two axis upper end of inlet valve is inserted It is located in two slide opening of inlet valve；Upper springs, and two axis upper end of inlet valve and top are also equipped in two slide opening of inlet valve Spring is fixed；The lower end of two axis of inlet valve is also equipped with the first valve end socket for blocking valve cover；First air valve seal Head is in coniform, and the lower end of valve cover is horn-like in cooperating with the first valve end socket.

6. two stroke engine according to claim 5, which is characterized in that also pacify in the outlet end of the intermediate air intake duct Equipped with stop collar；It is also provided with three slide opening of inlet valve on two axis of inlet valve, end axis is inserted in three slide opening of inlet valve, holds axis Lower end extend into discharge chambe；It is also equipped with lower springs in three slide opening of inlet valve, and holds upper end and the lower part bullet of axis Spring pushes against；The middle part of the end axis is also fixedly installed with duaspiracle end socket, and the upper surface of duaspiracle end socket and stop collar Cooperation；The duaspiracle end socket is in inverted coniform, and the upper surface of stop collar offers and duaspiracle end socket cooperates Chamfering.

7. two stroke engine according to claim 3, which is characterized in that offer third on the lower surface of the top cover Mounting groove, exhaust valve device are mounted in third mounting groove；The exhaust valve device includes exhaust interstage sleeve, exhaust valve shaft, exhaust End socket；The exhaust interstage sleeve is slidably mounted on third mounting groove, and exhaust valve spring is equipped in third mounting groove, is vented interstage sleeve Upper end and exhaust valve spring lower end push against；The upper end of the exhaust valve shaft is fixed with exhaust interstage sleeve, the lower end of exhaust valve shaft In the input end that cylinder cap extends to exhaust duct, and vented cap is fixedly mounted on the lower end of exhaust valve shaft；The exhaust valve Push rod slide opening is also provided in axis, push rod slide opening interpolation is equipped with push rod, and push rod spring is also equipped in exhaust valve shaft, push rod Upper end and push rod spring push against.

8. two stroke engine according to claim 7, which is characterized in that be also equipped with radially in the push rod slide opening The both ends of the pin shaft of extension, pin shaft are fixed through exhaust valve shaft and exhaust interstage sleeve；It is also provided on the push rod and cooperates with pin shaft Pin shaft hole, and pin shaft hole be long lumbar hole.

9. two stroke engine according to claim 7, which is characterized in that the vented cap is in coniform, exhaust duct Input end in cooperate with vented cap it is horn-like.

10. two stroke engine as claimed in any of claims 1 to 9, which is characterized in that also pacify on the cylinder cap Equipped with valve seating, valve seating is connected to acting room；The lower end of the cylinder body is also equipped with shell, and it is bent that output is equipped in shell Axis, and output crank shaft passes through rocking-arm driving and connect with compression cylinder piston, acting cylinder piston；The outer wall of cylinder block is also installed There is exhaust pipe, the outlet end of exhaust duct is connected to exhaust pipe, and pressure relief vent, and the outlet end of pressure relief vent and row are also provided on cylinder body The input end of tracheae connection, pressure relief vent is connected to the lower end of acting room.