CN1917985A

CN1917985A - Fastener driving tool

Info

Publication number: CN1917985A
Application number: CNA2004800420106A
Authority: CN
Inventors: R·C·韦布
Original assignee: Poly Systems Pty Ltd
Current assignee: Poly Systems Pty Ltd
Priority date: 2003-12-30
Filing date: 2004-12-30
Publication date: 2007-02-21
Anticipated expiration: 2024-12-30
Also published as: ZA200606163B; CN100439042C

Abstract

A fastener driving tool comprises a tool nose through which a fastener is fired; loading means for introducing the fastener into the tool nose. The fastener is adapted to be propelled by a gas combustion mechanism comprising a first priming cylinder (A) having a first piston (24) and an air intake (31) fluidally connected via a first valve means (32) to a second delivery cylinder (B) having a second piston (51). The first priming cylinder fluidally connected to a fuel gas reservoir (3) via a second valve means (26), the first priming cylinder adapted to receive fuel from the reservoir and air through the air intake thereby forming an air/fuel gas mixture therein. The first piston adapted to compress the air/fuel gas mixture and transfer same to the second deliver cylinder via said first valve means, the air/fuel mixture ignited therein and thereby urging the second piston towards the fastener and propelling same away from the tool nose.

Description

Fastener driving tool

Technical field

The present invention relates to the internal combustion fastener driving tool.

Background technology

Developed use internal combustion as power source with securing member for example nail squeeze into the fastener driving tool of workpiece or substrate.This instrument is lighted fuel/air mixture in the combustion chamber with propelling piston firmly, and this piston makes securing member eject this instrument then.The validity of the instrument of prior art mainly is subjected to it to light the efficiency limitations among others of the fuel/air mixture of whole volumes fast.If the fuel combustion of not enough volume, then equipment transmits unsuitable propulsive force to securing member.If instrument produces insecure power output, then securing member can be advanced to the not satisfied degree of depth or fixing insufficient.The equipment of prior art has been attempted to solve these poor efficiency (problem) by the fuel of making bigger instrument and consumption larger volume in the past.

A kind of such prior art equipment has been described among the US 5213247 (Gschwend etc.).This description of equipment one cover mechanism, the operation of this mechanism to be to measure the fuel of specific quantity, then by mechanically enlarging combustion chamber volume with described fuel and air suction combustion chamber together.A defective of this equipment is that fuel and gas do not mix fully, has reduced efficiency of combustion thus.Secondly, this equipment is with fuel and air suction combustion chamber under the situation of parital vacuum.As a result, fuel/air mixture is under low pressure lighted, and this can cause low burn rate and further inefficient.This is especially problematic, because the efficient of internal combustion fastener driving tool is low more, and the just easy more influence that is subjected to output pulsation of equipment, this can cause ignition failure and the propulsive force to securing member unsatisfactory.

The present invention manages to provide a kind of will improve or overcome the fastener driving tool of at least one defective of prior art.

Summary of the invention

In first aspect, the invention reside in a kind of fastener driving tool, this instrument comprises: pass the instrument front end of wherein launching securing member; Be used for described securing member is introduced the loading attachment of described instrument front end; Described securing member is suitable for being promoted by gas combustion mechanism, wherein said gas combustion mechanism comprises that having first of first piston and air inlet prepares cylinder, this first preparation cylinder is connected to the second output cylinder with second piston via the first valve gear fluid, described first prepares cylinder is connected to the fuel gas holder via the second valve gear fluid, described first prepares cylinder is suitable for admitting from the fuel gas of described fuel gas holder and the air that enters by described air inlet, thereby form the air/fuel admixture of gas therein, described first piston is suitable for compressing described air/fuel admixture of gas, and via described first valve gear with described air/fuel admixture of gas flow to described second output cylinder, described air/fuel mixture is lighted in the cylinder in second output, thereby and promotes described second piston and this securing member is released described instrument front end towards described securing member.

Preferably, in first embodiment, described first piston is mechanically activated.Preferably, described second valve gear is via mechanically actuated open and close.

Preferably, in second embodiment, described first piston is by Electromagnetically actuated.Preferably, described second valve gear is via Electromagnetically actuated open and close.

Preferably, described fastener driving tool is an ail gun.

Preferably, in the 3rd embodiment, can comprise the locking device that is used to engage the described second place along the mechanism that described instrument front end moves between first and second positions, thereby when described mechanism has at joint under the situation of described blocking device when described primary importance moves to the described second place, described air/fuel admixture of gas is further compressed by described second piston, described locking device is obeyed in downward the making every effort to overcome of lighting that wherein is derived from described air/fuel mixture, and promotes described second piston towards described securing member.

Preferably, near the bottom of the described second output cylinder, be provided with buffer, the sort buffer device is suitable for by the end compression of described second piston at its stroke, and the recovery subsequently of wherein said buffer also is suitable for forcing described second piston upwards to return along the described second output cylinder.

Preferably, the inside of described buffer forms the chamber, and this chamber is suitable for by transfer passage forced air being transported to described first via outlet valve when described buffer is compressed and prepares in the cylinder.

Preferably, described first piston has the internal receiver that is used to store described forced air.

Preferably, the periphery around described second piston is provided with the sealing ring with half flexible lip.

Preferably, exhaust fan is rotatably mounted in the inside of the described second output cylinder.

Preferably, be installed on outside motor and drive described exhaust fan via magnetic coupling.

Preferably, the described second output cylinder is via the flap type exhaust, and this flap type makes the described second output cylinder be connected with the exhaust plenum fluid when described flap type is opened.

Preferably, in second aspect, the invention reside in a kind of device that utilizes gas combustion mechanism to advance object, described gas combustion mechanism comprises that having first of first piston and air inlet prepares cylinder, this first preparation cylinder is connected to the second output cylinder with second piston via the first valve gear fluid, described first prepares cylinder is connected to the fuel gas holder via the second valve gear fluid, described first prepares cylinder is suitable for admitting from the fuel gas of described fuel gas holder and the air that enters by described air inlet, thereby form the air/fuel admixture of gas therein, described first piston is suitable for compressing described air/fuel admixture of gas, and via described first valve gear with described air/fuel admixture of gas flow to described second output cylinder, described air/fuel mixture is lighted in the cylinder in second output, thereby and promotes described second piston and promote described object thus towards described object.

Description of drawings

Fig. 1 is the perspective diagram according to first embodiment of the ail gun of fastener driving tool of the present invention;

Fig. 2 is the cross sectional representation of the ail gun of Fig. 1;

Fig. 3 is the cutaway end view of the ail gun of Fig. 1;

Fig. 4 is the zoomed-in view of the gas combustion mechanism shown in Fig. 2;

Fig. 5 is the zoomed-in view that enters the gas combustion mechanism shown in Fig. 2 when preparing cylinder when air and fuel;

Fig. 6 is the zoomed-in view of the gas combustion mechanism shown in Fig. 2 when air/fuel mixture is being compressed in the preparation cylinder;

Fig. 7 is the zoomed-in view of the gas combustion mechanism shown in Fig. 2 when air/fuel mixture flows to propulsion cylinder from preparing cylinder;

Fig. 8 is the zoomed-in view of the gas combustion mechanism shown in Fig. 2 when the air/fuel mixture in the propulsion cylinder is compressed;

Fig. 9 be when made by the air/fuel mixture lighted piston in propulsion cylinder when armed nail moves the zoomed-in view of the gas combustion mechanism shown in Fig. 2;

Figure 10 promotes the zoomed-in view that nail and gas begin the gas combustion mechanism shown in Fig. 2 when propulsion cylinder is discharged when the propeller that is connected in piston;

Figure 11 and 12 be when piston along propulsion cylinder upwards return and remaining waste gas by the zoomed-in view of the gas combustion mechanism shown in Fig. 2 when propulsion cylinder is removed;

Figure 13 is the zoomed-in view that is used for the circulation wheel apparatus of control tool circulation;

Figure 14 is the zoomed-in view of the optional embodiment of the circulation wheel apparatus shown in Figure 13;

Figure 15 a and 15b are the front view and the cutaway views of the amplification of fuel gas cartridge;

Figure 16 is the cross sectional representation according to second embodiment of the ail gun of fastener driving tool of the present invention;

Figure 17 is the schematic diagram according to the 3rd embodiment of the ail gun of fastener driving tool of the present invention;

Figure 18 is the enlarged diagram of the internal receiver of the ail gun shown in Figure 17;

Figure 19 is the partial sectional view of amplification of the sealing ring of the ail gun shown in Figure 17;

Figure 20 is the enlarged diagram of the flap type of Figure 17.

The specific embodiment

Fig. 1 and 2 illustrates the ail gun (instrument) that the burning that is used to launch pin fastener drives.This ail gun comprises preparation cylinder A and the power propulsion cylinder B that is contained in the tool body shell 62.Tool support handle 7 with small of the stock 5 extends and accommodates fuel gas cartridge (holder) 3 from shell 62.The battery 1 that is contained in the detachable battery shell 2 is attached on the supporting handle 7.Pin fastener tube (or nail box) 4 is transported to instrument front end (or gun barrel) 9 with pin fastener 8.

The operation of explanation combustion nailer now.The user holds the ail gun that burning drives by the tool support handle 7 and the small of the stock 5.User's finger is placed on the emission trigger 16.Activate main miniature trigger 15.Electronics CPU (CPU) 18 is apprised of instrument and is in the operation.CPU 18 is switched to the circuit of the preparation cylinder driver with cycle sensor wheel 21 and main power supply slip ring 66 as shown in figure 13.Actuation motor 35.Wheel 21 rotations make first piston 24 advance in preparing cylinder A downwards via connecting rod 23, crank-pin 22 and bearing 34.Prepare cylinder A inner carrier 24 above parital vacuum appears, cause transfer valve 32 closures and intake valve 31 is opened.By air inlet 30 cylinder A is prepared in the air suction.Fuel carries striker part 25 to contact with pin 27, makes the interior gas trap 26 of head of gas cylinder 3 open a bit of time.The atomized fuel of given volume discharges and passes passage 28 from gas cylinder 3 and arrives air inlet 30.Atomized fuel gas with mix by valve 31 inside flow air at air inlet 30 places, to preparing cylinder A filling fuel, gas and AIR MIXTURES, as shown in Figure 5.Referring to Fig. 6, piston 24 upwards returns along preparing cylinder A, and pressure raises, closed valve 31 and open valve 32 so that air/fuel mixture is flowed to propulsion cylinder B from preparing cylinder A.During piston 24 moves upward, give

electromagnetic exhaust valve

42 and 45 power supplies, valve head 45 is opened, remove remaining waste gas to allow the fuel/air air mixture by the combustion space of inwardly flowing in cylinder B of valve 32, referring to Fig. 7.When the fuel/air air mixture phase time that occurs 50%, slip ring 67 separates with magnetic valve 42, makes valve head 45 closed and sealing exhaust outlets 43 via the disc spring (not shown).Piston 24 advances to the top of preparing cylinder A, the fuel/air air mixture is transported in the combustion zone of propulsion cylinder B.Slip ring 69 makes power supply circuits separate with motor.CPU 18 is switched to the circuit of cooling fan motor 41.Instrument is placed and is pressed against on the workpiece, and mechanism 61 is pressed down, but informs CPU 18 instrument secure transmission.CPU 18 is switched to the circuit of switching mechanism 17, allows main emission trigger 16 fully to be pressed down.Mechanism 17 informs that CPU 18 activates igniter 48.Fuel/air mixture igniting in the combustion zone of propulsion cylinder B is also blasted, and pressure raises rapidly, causes valve 32 closed hermetically, referring to Fig. 8.Second piston 51 and propeller 55 advance downwards along the hole 54 of cylinder B.Propeller 55 is squeezed into workpiece along instrument front end 9 downwards with securing member 8.When piston 51 when cylinder B advances downwards, the air below piston 51 is discharged by exhaust outlet 60 and 12.When piston 51 passed through its stroke 90% the time, the downside of piston 51 contacts with rubber bumper 58.Buffer 58 absorbs advancing of the energy and the piston 51 that slows down.Then, exhaust outlet 60 is opened, and allows waste gas to be discharged in the cavity 57 from cylinder B, discharges by tool housing exhaust outlet 13 then.At the end of the stroke of piston 51, piston 51 contacts with the power propeller cylinder piston end of stroke sensor 59.Sensor 59 is informed the position of CPU 18 pistons 51.CPU 18 opens it to electromagnetic exhaust valve 42 energisings, discharges in cavity 57 and by cavity 13 from the top discharge of cylinder B by exhaust outlet 43 to allow waste gas.The energy of storage makes piston 51 and propeller 55 upwards return along the hole in the propulsion cylinder B 54 in the buffer 58.Remaining waste gas is removed away by exhaust outlet 43 in the propulsion cylinder B.Allow air to move to the downside of cylinder B inner carrier 51, stop piston 51 to turn back to the top in the hole 54 in the cylinder B to prevent parital vacuum, referring to Figure 11 and 12 by exhaust outlet 60 and 12.CPU 18 has built-in electronic timing mechanism so that operation magnetic valve 42 and cooling fan 41.When piston 51 had arrived the top in hole 54 of cylinder B, CPU 18 was disconnected to the circuit of electromagnetic exhaust valve 42, to allow valve head 45 closures.CPU 18 allows cooling fan 41 about 10 seconds a period of time of maintenance activity in the use of emission for once, perhaps for continuous application, and cooling fan 41 sustainable maintenance activities.Can in cavity 57, be incorporated into the temperature sensor (not shown) of communicating by letter with CPU 18.

Figure 13 illustrates and guarantees 21 to revolve the mechanical braking/limiting mechanism (not shown) that turns around at each tool cycle wheel that only needs to circulate.

Figure 14 is the optional embodiment of the mechanical mechanism 21 of Figure 13.In this optional embodiment, electronics crankangle mechanism 70,19a, stepper motor 35 and high tension spark mechanism can incorporate CPU 18 into and communicate by letter with CPU 18.

Figure 15 illustrates the methyl alcohol that accommodates the medium that for example acts as a fuel and liquid state as the supercharging medium/gaseous state CO opposite with traditional MAPP gas ₂The highly pressurised liquid propellant bottle.In the case, allow fuel gas medium more effectively to atomize with the 850psi fuel-in-storage usually and mix, in combustion cylinder process, separate out more energy with air mass.Also can use the hydrogen gas medium that acts as a fuel.

Figure 16 illustrates second embodiment according to ail gun of the present invention.The ail gun of this second embodiment is similar to the ail gun of first embodiment, and uses identical reference number indication same parts.The main distinction is, first embodiment shown in Fig. 2 has the mechanically actuating mechanism of power piston 24 that is used in preparing cylinder A of connecting rod 23, crank-pin 22 and bearing 34 forms.But in this second embodiment, described actuating mechanism is replaced by an electromagnet actuation mechanism.Solenoid cylinder (or coil) 102 power pistons 24 are to be delivered into gas/fuel air mixture in the propulsion cylinder B.One piston return spring 103 is connected on the piston 24, so that upwards promote piston when solenoid cylinder 102 fails.In addition, gas discharges solenoid 104 alternative (first embodiment's) mechanical devices that fuel are transported to air inlet 30.Prepare cylinder A and also have exhaust outlet 105.Solenoid 102 is all communicated by letter with CPU 18 with 104 and is all activated electronically.

Figure 17 illustrates the 3rd embodiment according to ail gun of the present invention.This embodiment is similar to the embodiment of front, and uses identical reference number indication same parts.This embodiment demonstrates many preferred features, each preferred feature all can replace or additional front embodiment in corresponding component.Described preferred feature is described respectively in following paragraph.

Ail gun shown in Figure 17 comprises the first and second

spring bias ball

201 and 202, and this spring bias ball is arranged in the mechanism 61, and the bottom of joint propeller 55 is to keep the top of second piston 51 near propulsion cylinder B.In case the backward stroke propeller 55 of

instrument cross ball

201 and 202 above, then

ball

201 and 202 moves inward towards the other side because of spring force.In optional the setting,

ball

201 and 202 location indentations that engage in the propeller 55, this advantageously provides the reliable control to propeller 55.In use, even when introducing the fuel/air mixture admixture of gas of compression,

ball

201 and 202 will second piston 51 and propeller 55 remain on higher position in the propulsion cylinder B.When subsequently instrument being placed and being pressed against on the workpiece, mechanism 61 is depressed into the second place from primary importance, informs that CPU 18 instruments can launch safely.When mechanism 61 was depressed, second piston 51 also moved to eminence more, the further air/fuel admixture of gas in the compression propulsion cylinder B before igniting.After the igniting, second piston 51 and propeller 55 are firmly advanced downwards, overcome the spring force of the first and second spring bias ball 201 and 202.When second piston 51 and propeller 55 were finished their backward stroke, the first and second

spring bias ball

201 and 202 engaged the bottom of propeller 55 once more.This is arranged so that owing to given about 10% extra upward stroke of second piston 51 can realize high prefiring gas pressure.

The 3rd embodiment of the ail gun shown in Figure 17 illustrates the chamber 203 that is present in buffer 58 inside.Buffer 58 preferably is made of so that durability and high resiliency to be provided senior durable rubber and layered fabric.In this structure, buffer 58 the advancing of piston 51 of will slowing down makes piston 51 and propeller 55 upwards return along the hole in the propulsion cylinder B 54 then.For this reason, also available spring replenishes buffer 58.In use, when buffer 58 during by piston 51 compression, chamber 203 compressions send out outlet valve 204 with forced air, by transfer passage 205 and the internal receiver 206 that enters piston 24.Flexibly recover from their compressive state buffer 58 and chamber 203, forces piston 51 54 upwards to return along the hole.The volume that expands in chamber 203 causes pressure drop, and this pressure drop makes outlet valve 204 closures and injection valve 209 is opened, with fresh air suction chamber 203 simultaneously at certain pressure lower seal transfer passage 205.Like this, by being aspirated back, forced air prepares cylinder A so that use the energy of recyclable waste subsequently.The pressure of air/fuel mixture also increases, this so that improved efficiency of combustion.

To use Figure 18 to illustrate how piston 24 and internal receiver 206 interact to utilize by chamber 203 air pressurized now.The motion of piston 24 takes place as described in the embodiment in front.When piston 24 was in the top of preparing cylinder A, air admission hole 207 was aimed at transfer passage 205.When the moving downward compression buffer 58 and thus the air in the transfer passage 205 is pressed into internal receiver 206 of piston 51, piston 24 is in this tip position.As mentioned above, when piston 51 along the hole 54 when upwards returning, outlet valve 204 closures keep transfer passage 205 and internal receiver 206 pressurized.When using, piston 24 is advanced downwards next time, sealed inside receiver 206.This move downward simultaneously prepare cylinder A inner carrier 24 above produce parital vacuum, cause transfer valve 32 closures and intake valve 31 is opened.Air and fuel are drawn into by air inlet 30 and valve 31 and prepare cylinder A.When piston 24 during near the bottom of its stroke, bypass 208 is aimed at bypass opening 210, allows from the air/fuel mixture pressurization to piston 24 tops of the forced air of internal receiver 206.The pressure that causes thus raises and makes intake valve 31 closures.Then, piston 24 upwards advances/returns along preparing cylinder A, and pressure further raises, and opens valve 32 and air/fuel mixture is delivered into propulsion cylinder B from preparing cylinder A.This be provided with advantageously allow storage from the forced air of chamber 203 so that use after a while.

Figure 19 is the partial enlarged view of second piston 51, a kind of preferable configuration of sealing ring shown in it 52.In this structure, sealing ring 52 is made by the teflon (Teflon) that floods with carbon, and has shape of cross section as shown in figure 19.Little contact area between the material of sealing ring 52 and it and the hole 54 causes the frictional resistance minimum, and it is less that this advantageously causes making second piston 51 upwards to return the required power that makes progress along propulsion cylinder B.Half flexible lip 211 extends upward from sealing ring 52, and when antelabium 211 is static and hole 54 spaced apart.When igniting, high pressure acts on the top of second piston 51 and sealing ring 52, makes antelabium 211 lean against on the hole 54 from its resting position is outwardly-bent, bigger sealing gland is provided thus and makes the loss minimum.In case gas pressure diminishes, then seal lip 211 turns back to its resting position of leaving hole 54, thereby makes the resistance minimum during backward stroke.

Figure 20 is the enlarged diagram of the preferred optional structure of power propeller cylinder head 47.In this structure, exhaust fan 212 is rotatably installed in the inside of power propulsion cylinder B.Exhaust fan 212 magnetic are connected to cooling fan motor 41, and this motor is installed in the outside of propulsion cylinder B.Structure member between exhaust fan 212 and the cooling fan motor 41 is preferably made of aluminum.Exhaust fan 212 agitation air/fuel gas mixture improves the reliability of tool's power output to obtain burning more completely.

Figure 20 also illustrates magnetic valve 42 and is substituted by flap type 213, and this flap type is preferably also by Electromagnetically actuated.When 215 outages of flap type coil, flap type spring 214 is biased into open position with flap type 213.When CPU 18 made 215 energisings of flap type coil, electromagnetic force overcame flap type spring 214 with closed flap type 213.When flap type 213 was opened, power propulsion cylinder B was communicated with exhaust plenum 216 fluids, and permission is removed remaining waste gas rapidly from the combustion space in the cylinder B.

Although with reference to being used to advance the ail gun of nail that the above embodiment of the present invention has been described, should be appreciated that the present invention in other unshowned embodiment also can be used for launching other securing member, and be not limited to this.In addition, in other unshowned embodiment, the gas combustion mechanism of the foregoing description can be used in some other devices that advance object therein.This propulsion plant can have the instrument of the ail gun that is different from the foregoing description or advance to be used.

Term used herein " comprises " that (and its grammatical variants) is used for that wide significance " has " or " comprising ", but not restrictive, sense " only by ... constitute ".

Claims

1. fastener driving tool, this instrument comprises: pass the instrument front end of wherein launching securing member; Be used for described securing member is introduced the loading attachment of described instrument front end; Described securing member is suitable for being promoted by gas combustion mechanism, wherein said gas combustion mechanism comprises that having first of first piston and air inlet prepares cylinder, this first preparation cylinder is connected to the second output cylinder with second piston via the first valve gear fluid, described first prepares cylinder is connected to the fuel gas holder via the second valve gear fluid, described first prepares cylinder is suitable for admitting from the fuel gas of described fuel gas holder and the air that enters by described air inlet, thereby form the air/fuel admixture of gas therein, described first piston is suitable for compressing described air/fuel admixture of gas, and via described first valve gear with described air/fuel admixture of gas flow to described second output cylinder, described air/fuel mixture is lighted in the cylinder in second output, thereby and promotes described second piston and this securing member is released described instrument front end towards described securing member.

2. fastener driving tool according to claim 1 is characterized in that described first piston is mechanically activated.

3. fastener driving tool according to claim 1 and 2 is characterized in that, described second valve gear is via mechanically actuated open and close.

4. fastener driving tool according to claim 1 is characterized in that described first piston is by Electromagnetically actuated.

5. according to claim 1 or 4 described fastener driving tools, it is characterized in that described second valve gear is via Electromagnetically actuated open and close.

6. fastener driving tool according to claim 1 is characterized in that described fastener driving tool is an ail gun.

7. fastener driving tool according to claim 1, it is characterized in that, can comprise the locking device that is used to engage the described second place along the mechanism that described instrument front end moves between first and second positions, thereby when described mechanism has at joint under the situation of described locking device when described primary importance moves to the described second place, described air/fuel admixture of gas is further compressed by described second piston, described locking device is obeyed in downward the making every effort to overcome of lighting that wherein is derived from described air/fuel mixture, and promotes described second piston towards described securing member.

8. fastener driving tool according to claim 1, it is characterized in that, near the bottom of the described second output cylinder, be provided with buffer, the sort buffer device is suitable for by the end compression of described second piston at its stroke, and the recovery subsequently of wherein said buffer also is suitable for forcing described second piston upwards to return along the described second output cylinder.

9. fastener driving tool according to claim 8 is characterized in that, the inside of described buffer forms the chamber, and this chamber is suitable for by transfer passage forced air being transported to described first via outlet valve when described buffer is compressed and prepares in the cylinder.

10. fastener driving tool according to claim 9 is characterized in that described first piston has the internal receiver that is used to store described forced air.

11. fastener driving tool according to claim 1 is characterized in that, the periphery that centers on described second piston is provided with the sealing ring with half flexible lip.

12. fastener driving tool according to claim 1 is characterized in that, exhaust fan is rotatably mounted in the inside of the described second output cylinder.

13. fastener driving tool according to claim 12 is characterized in that, is installed on outside motor and drives described exhaust fan via magnetic coupling.

14. fastener driving tool according to claim 1 is characterized in that, the described second output cylinder is via the flap type exhaust, and this flap type makes the described second output cylinder be connected with the exhaust plenum fluid when described flap type is opened.

15. device that utilizes gas combustion mechanism to advance object, described gas combustion mechanism comprises that having first of first piston and air inlet prepares cylinder, this first preparation cylinder is connected to the second output cylinder with second piston via the first valve gear fluid, described first prepares cylinder is connected to the fuel gas holder via the second valve gear fluid, described first prepares cylinder is suitable for admitting from the fuel gas of described fuel gas holder and the air that enters by described air inlet, thereby form the air/fuel admixture of gas therein, described first piston is suitable for compressing described air/fuel admixture of gas, and via described first valve gear with described air/fuel admixture of gas flow to described second output cylinder, described air/fuel mixture is lighted in the cylinder in second output, thereby and promotes described second piston and promote described object thus towards described object.