CN103061816A

CN103061816A - Compressed air engine assembly with tail gas recovery loop

Info

Publication number: CN103061816A
Application number: CN 201110331809
Authority: CN
Inventors: 周登荣; 周剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-18
Filing date: 2011-10-28
Publication date: 2013-04-24

Abstract

The invention relates to a two-stroke engine, in particular to a two-strike compressed air engine assembly which takes compressed air as a power source. The compressed air engine assembly comprises an engine body (1), a multi-cylinder power divider (2), a power plant (4), a controller system (6), an air inlet control and speed regulation valve (23), a high-pressure gas tank group (13), a constant-pressure tank (16), an electronic control unit (ECU) (29) and a tail gas recovery loop. The tail gas recovery loop comprises an air compressor (7), a condenser (11), a tail gas recovery tank (9), an electric turbine one-way air pump (19) and a tail gas noise deadener (22).

Description

Compressed air engine assembly with tail gas recycling loop

Technical field

The present invention relates to compressed air engine, more specifically, the present invention relates to a kind of two-stroke compressed air engine assembly with tail gas recycling loop.

Background technique

Motor is widely used in all trades and professions, the Modern Traffic means of transportation such as automobile, steamer etc. in, generally adopt with the piston internal-combustion engine of fuel oil as power source.This employing fuel oil is insufficient because of oil inflame on the one hand as the motor of power source, so that contain a large amount of harmful matters and befouling environment in the gas of discharging, on the other hand because the fuel oil that uses is to refine to obtain from oil, petroleum resources day by day in short supply so that the development of fuel engine and utilization are subject to increasing restriction.Therefore develop new, clean, free of contamination alternative energy source, perhaps reduce as much as possible fuel consume, reduce discharging and become urgent problem in the development of engine.For this reason, various countries have experienced complicated and hard the Exploring Road, have researched and developed multiple power source, such as substitute fuel, motorized motions, fuel cell and solar cell etc.

The substitute fuel automobile, such as rock gas (CNG, LNG) automobile, alcohols automobile, dimethyl ether automobile etc. exhaust emission and thermal effect are arranged still, some fuel is also toxic, some fuel combustion control difficulty, thereby still have in actual use many difficulties and challenge.

Non-pollution discharge in the electric automobile during traveling, noise is low, energy conversion efficiency is high, but battery-driven electric vehicle is limited by on-vehicle battery, in the degree that is difficult to for the moment aspect specific power, cycle life, charge-discharge performance, cost and the Security reach practical, simultaneously, there is serious secondary pollution in battery itself.Hybrid-power electric vehicle has the advantage of cell electric vehicle and internal-combustion engines vehicle, but still has discharging and pollution problem, and because the existence of two cover power plant, and it drives and the control system complex that becomes, thereby has hindered practical application and development.

Fuel cell is placed high hopes by people, can realize the zero-emission of power output, and energy conversion rate is high, but the manufacture cost of fuel cell is high, and the safety storing of hydrogen, preparation and can have many problems, and this has just restricted development and the use of this power source greatly.Solar cell still need reduce the battery volume and improve photoelectric transformation efficiency, thereby specifically is applied on the transport facility and still need makes a breakthrough.

In sum, the equal Shortcomings part of hybrid power source that above-mentioned various new power source or their consist of, thereby, there not be pollution, a nexhaustible novel energy in the urgent need to a kind of, this requirement has just in time been satisfied in the compressed-air power source.

Study the earliest the Designer Guy Negre for French MDI company of compressed-air power engine, it has proposed the concept of compressed air engine, attempt to solve the problem of utilizing of " zero-emission " and the energy capable of circulation, from then on open the new page of engine research, and released the pure aerodynamic Domestic bridge car of first item in 2002.Compressed air compressor uses high pressure air as power source, and air is as medium, and when compressed air engine was worked, the pressure energy that pressurized air is stored was converted to other forms of mechanical energy.About the visible FR2731472A1 of the research of compressed air engine, US6311486B1, US20070101712A1 etc.

FR2731472A1 discloses a kind of motor that can work under fuel supply and two kinds of patterns of pressurized air supply, adopt conventional fuel such as gasoline or diesel oil at expressway, in low speed particularly urban district and suburbs, pressurized air (or other any on-contaminated pressurized gass) is injected the firing chamber.Although this motor has partly reduced fuel consumption, owing to still adopted fuel oil mode of operation, emission problem still to fail to solve.

For further pollution abatement, US6311486B1 discloses a kind of pure air-powered motor, such motor has adopted three independently chambers: air-breathing-pressing chamber, expansion exhaust chamber and constant volume firing chamber, and air-breathing-pressing chamber is connected to the constant volume firing chamber by valve, and the constant volume firing chamber is connected to the expansion exhaust chamber by valve.One of problem of this motor is that time of experiencing from air-breathing-pressing chamber to the expansion exhaust chamber of pressurized gas is longer, the power source gas time that obtains the driven plunger acting is longer, simultaneously, fail to obtain to use from the pressurized gas that the expansion exhaust chamber is discharged, this has just limited working efficiency and the single aeration continuous working period of this class motor.

More domestic researchers and unit also are studied compressed air engine, but most concentrating on the feasibility and working principle of compressed-air power engine, such as (" feasibility studies of Compressed-air Powered Vehicle " such as Xu Hong, " China Mechanical Engineering " the 13rd volume the 17th phase 1512-1515 page or leaf, in September, 2002).Though more domestic patent documentations also are studied compressed air engine such as CN1851260A, CN100560946C, CN101705841A, but belong to theoretical research and conceptual design more, all fail to solve compressed-air actuated discharging and (usually have higher pressure, such as about 30bar) and control and the allocation problem of high pressure air, the commercialization process of tripping contracting air engine is had got long long way to go.

The application's claimant discloses a kind of air power engine assembly that can be used for transport facility in its patent documentation CN101413403 A (its international application of the same clan is WO2010051668 A1), this motor comprises gas holder, air distributor, engine body, clutch, clutch, automatic transmission, differential mechanism and places the interior turbo dynamo of exhaust chamber.This motor utilizes compressed air to do work and does not use any fuel, does not therefore have toxic emission, realized " zero-emission ", and recycling waste gas generates electricity, and has saved the energy, has reduced cost.But this motor is based on traditional four stroke engine, every rotation 720 degree of bent axle, and piston does work once.And can the pushing piston acting can be in entering cylinder the time as the high-pressure air of power source, then discharging, namely the stroke of compressed air engine is actual is air inlet-expansion stroke and discharge stroke.Obviously, the disclosed this four-stroke compressed air engine of patent documentation CN101413403 A has been wasted effective expansion stroke greatly, has limited the efficient of motor.And the tail gas of this motor is failed recycling well, needs enough large gas holder deposit high-pressure air could work the sufficiently long time, and this has just reduced compressed air engine in industrial application prospect.

Based on the problems referred to above, the invention provides a kind of two-stroke compressed air engine, the effective acting problem and the circulation of tail gas that are intended to solve compression engine utilize problem, thereby realize Novel compressed air motor economic, efficient, zero-emission.

Summary of the invention

Some embodiment who is equivalent in the primitive request scope of the present invention does following summary.These embodiments are unrestricted claimed invention scope also, but attempts to provide the brief overview of multiple possibility form of the present invention.In fact, the present invention can comprise and is similar to or is different from the multi-form of the embodiment that proposes below.

According to a fermentation of the present invention, a kind of compressed air engine assembly is provided, it comprises: engine body, this engine body comprise cylinder, cylinder cap system, air inlet pipeline, gas exhaust piping, piston, connecting rod, bent axle, exhaust cam shaft, admission cam shaft, front gear box system and rear gear box; Described piston is connected to bent axle via connecting rod; Described front gear box system is used for driving crank and camshaft; Described cylinder cap system is provided with for the gas larynx hole of pressurized air air inlet and is used for the exhaust port of exhaust emissions; The high pressure gas holder group, it is communicated with external aerator by pipeline; Constant-pressure tank, it is communicated with the high pressure gas holder group by pipeline.Wherein, described compressed air engine assembly also comprises: air inlet control series flow control valve, and it is communicated with constant-pressure tank by pipeline; Controller system; Multicolumn body power distribution device, it is connected with the bent axle of engine body; Power equipment, it is connected with multicolumn body power distribution device via clutch; Electronic control unit ECU, the SC sigmal control air inlet control series flow control valve that it detects according to sensor; And tail gas recycling loop.

In one exemplary embodiment, described tail gas recycling loop comprises: discharge header, air compressor, condenser, tail gas recycle tank, the unidirectional air exhauster of electric turbine and exhaust gas sound-deadening device, tail gas enters the exhaust gas sound-deadening device by discharge header, and be sucked in the tail gas recycle tank by the unidirectional air exhauster of electric turbine, the tail gas that is gathered in the tail gas recycle tank is sent into the high pressure gas holder group after air compressor compression supercharging is by the condenser cooling processing.

Preferably, described air compressor is connected with multicolumn body power distribution device by coupling, works from the motivational drive air compressor that the transmission of multicolumn body power distribution device comes, with the tail gas of compression from the tail gas recycle tank.

In the exemplary embodiment, between the unidirectional air exhauster of electric turbine and tail gas recycle tank, be provided with one-way valve, to prevent that tail gas is from tail gas recycle tank adverse current to the unidirectional air exhauster of electric turbine.Preferably, the pipeline between condenser and high pressure gas holder group arranges exhaust gas filter and/or one-way valve.Exhaust gas filter is used for the tail gas after the supercharging is carried out purified treatment, so that the tail gas that filters is suitable for being stored in the high pressure gas holder group.Simultaneously, the existence of one-way valve prevents that high pressure air from flowing backwards from the high pressure gas holder group.In another exemplary embodiment, described air inlet control series flow control valve is the combination of electromagnetic proportional valve or electromagnetic proportional valve and reduction valve, in the time of so just can realizing easily high engine speeds, middling speed and low speed to the demand of pressurized air air inlet.

Preferably, described controller system comprises in high-pressure common rail constant voltage pipe, controller loam cake, the controller lower of seat and controller, in described controller loam cake, the controller and lower of controller removably be tightly connected by bolt successively.

In another exemplary embodiment, described sensor is engine rotation speed sensor or the oily potentiometer of door or both combinations.

Preferably, described power equipment is transmission system, generator or gearbox.

In another exemplary embodiment, be provided with air inlet pipeline in the described controller loam cake, described air inlet pipeline is threaded onto high-pressure common rail constant voltage pipe.

In addition, in the seat controller intake valve, controller valve spring and controller valve cover for seat are installed also in the described controller, the precompose of described controller valve controlled device valve spring processed firmly is resisted against the controller valve seat and puts when motor need not air inlet.

Preferably, be provided with the controller tappet that control controller valve opens and closes in lower of the described controller, this controller tappet is activated by admission cam shaft.

In another embodiment, the cylinder of described engine assembly is 6 cylinders, and its bent axle comprises 6 unit crank throws.

Preferably, described 6 unit crank throws are respectively first module crank throw, second unit crank throw, the 3rd unit crank throw, the 4th unit crank throw, the 5th unit crank throw, the 6th unit crank throw, and the phase place of each unit crank throw is set as follows: first module crank throw and second unit crank throw differ 120 degree, second unit crank throw and the 3rd unit crank throw differ 120 degree, the 3rd unit crank throw and the 4th unit crank throw differ 180 degree, the 4th unit crank throw and the 5th unit crank throw differ-120 spend, the 5th unit crank throw and the 6th unit crank throw differ-120 and spend.

Description of drawings

To describe now according to preferred but nonrestrictive embodiment of the present invention, these and other features of the present invention, aspect and advantage will become apparent when reading with reference to the accompanying drawings following detailed description, wherein:

Fig. 1 is the general illustration according to two-stroke air engine assembly of the present invention;

Fig. 2 is the front view of the engine body of the two-stroke air engine assembly among Fig. 1;

Fig. 3 is the right, side view of the engine body of the two-stroke air engine assembly among Fig. 1;

Fig. 4 is the left side side view of the engine body of the two-stroke air engine assembly among Fig. 1;

Fig. 5 is the plan view of the engine body of the two-stroke air engine assembly among Fig. 1;

Fig. 6 is the bent axle-connecting rod-piston system assembly of the engine body of the two-stroke air engine assembly among Fig. 1, wherein, shows being connected of one of them piston-linkage unit and cylinder body;

Fig. 7 is the bent axle modular construction schematic representation of the bent axle-connecting rod-piston system assembly among Fig. 6;

Fig. 8 is the camshaft structure schematic representation of the engine body among Fig. 2;

Fig. 9 A is the perspective view of the controller system of the two stroke engine assembly among Fig. 1;

Fig. 9 B is the longitudinal cross-section view of controller system;

Fig. 9 C is the lateral cross side view of controller system;

Figure 10 A is the perspective view of the front gear box system of the two stroke engine assembly among Fig. 1;

Figure 10 B is the left side side view of Figure 10 A;

Figure 10 C is the side view of the right side broken section of Figure 10 A;

Figure 11 A is the perspective view of the multicolumn body power distribution device of the two stroke engine assembly among Fig. 1;

Figure 11 B is the viewgraph of cross-section that the longitudinally axis of Figure 11 A is analysed and observe;

Figure 11 C is the left side side view of Figure 11 A;

Figure 11 D is the plan view of Figure 11 A;

Figure 12 A is the P-V figure of compressed-air power engine, and it shows the compressed-air power forms of distribution of serial graded; And

Figure 12 B is the P-V figure for compressed-air power engine, and it shows the compressed-air power forms of distribution of parallel form.

List of parts

Reference number	Parts
		1	Engine body
2	Multicolumn body power distribution device
		3	Clutch

[0048]

4	Power plant
		5	Clutch
6	Controller system
		7	Air compressor
8	Pipeline
		9	The tail gas recycle tank
10	Pipeline
		11	Condenser
12	Pipeline
		13	The high pressure gas holder group
14	The compressed air inlet pipeline
		15	Pipeline
16	Constant-pressure tank
		17	Pipeline
18	Pipeline
		19	The unidirectional air exhauster of electric turbine
20	Pipeline
		21	One-way valve
22	The exhaust gas sound-deadening device
		23	Air inlet control series flow control valve
24	Velocity transducer
		242	The oily potentiometer of door
25	Electromagnetic pulse signal
		26	Control signal
27	Gas exhaust piping
		272	Exhaust port
28	Discharge header
		29	ECU
31	Gear ring

[0049]

32	Flywheel
		33	Rear gear box
34	Belt pulley
		35	The camshaft drivign belt
36	The cylinder cap system
		39	Starter
391	Generator
		40	Cylinder
42	Air inlet pipeline, valve trunnion
		402	Gas larynx hole
43	The front gear box system
		44	The cylinder block oil sump
45	The machine oil filter core device
		51	Piston
52	Piston ring
		53	Oil blocking ring
54	Connecting rod
		55	Wrist pin
56	Bent axle
		57	Connecting rod bearing shell
58	Connecting rod cap
		59	The piston snap ring
60	Connecting rod connecting bolt hole
		61	The crankshaft timing helical gear
62	Outlet valve
		63	The expansion exhaust chamber
71	The unit crank throw
		71a	The first module crank throw
71b	The second unit crank throw

[0050]

71c	The 3rd unit crank throw
		71d	The 4th unit crank throw
71e	The 5th unit crank throw
		71f	The 6th unit crank throw
72	The flywheel connecting bolt
		73	The oil lubricating oilhole
74	The counterweight hole
		75	Crankshaft rear end
76	Crank pin
		77	Balancer weight
78	Main journal
		79	The gear connecting bolt
800	Exhaust cam shaft
		80	Crankshaft front end
81	The unit cam
		81a	The first module cam
81b	The second unit cam
		81c	The 3rd unit cam
81d	The 4th unit cam
		81e	The 5th unit cam
81f	The 6th unit cam
		82	Cam
83	Sprocket wheel
		91	High-pressure common rail constant voltage pipe
92	The controller valve
		93	Controller valve block set
94	The controller valve spring
		95	Lower of controller valve spring
96	Controller valve collet sheet

[0051]

97	Lower of controller
		98	Seat in the controller
99	The oil sealing lining
		100	High-pressure common rail constant voltage pipe end-cap
104	The valve column sleeve
		105	End cover connecting bolt
106	End cap
		107	Loam cake and middle seat connecting bolt
108	The controller loam cake
		109	Middle seat and a lower connecting bolt
110	Middle seat and a lower attaching nut
		111	The loam cake attachment hole
112	Prop up air inlet pipeline
		113	The admission cam shaft mounting hole
114	Controller tappet mounting hole
		115	The controller tappet
116	The oil sealing bush hole
		117	The controller valve port
118	Gas larynx hole connecting pipeline
		119	Controller valve spring hole
120	Controller valve seat trepanning
		200	Admission cam shaft
302	The intake cam shaftgear
		303	Carrier gear
304	Oilhole
		305	Welded post
306	The exhaust cam shaftgear
		307	Crankshaft gear
308	Driving gear

[0052]

309	Screw connecting hole
		310	Screw hole
311	Bolt connecting hole
		312	Rings seat
313	The polygonal lid
		401	Planetary pinion
4021	Flat key
		403	The planetary pinion pin
404	The bearing cylinder
		405	Sun gear
406	Sun gear gear pin
		407	Ring gear
601	One-level
		602	Secondary
603	Three grades
		604	Level Four
605	Pyatyi

Embodiment

The following description only is exemplary and be not in order to limit the disclosure, application or purposes in essence.Should be understood that in whole accompanying drawings, corresponding reference character represents identical or corresponding parts and feature.

Before describing the specific embodiment of the present invention in detail, the energy with regard to compressed air engine carries out theory analysis first.

The acting process of compressed air engine is fairly simple, the process of only having pressurized air to expand and do work.Shown in Figure 12 A, Fig. 1-5 is pressurized air isothermal expansion process, and 1-6 is the pressurized air adiabatic expansion.It can not be isothermal process completely that pressurized air does work in motor, usually between isothermal process and adiabatic process, can adopt multistage adiabatic process to be similar to isothermal process in order to improve the compressed air energy utilization ratio, perhaps adopt the appearance endothermic process such as multistage to be similar to isothermal process.Compressed-air actuated double expansion acting process 1-2-3-4 has been shown among Figure 12 A, and 1-2 and 3-4 finish in first cylinder and second cylinder.Working medium through the acting of the adiabatic expansion of the first order after, carry out isobaric heat absorption 2-3 through a heat exchanger again, get back to initial temperature after, enter again the acting of expanding of the second cylinder.Theoretically, can regard approx the acting process of motor as the isothermal expansion process, so curve 1-5 and coordinate figure V ₁, V ₂Between the energy of the cartographic represenation of area pressurized air storage that comprises discharge the gas expansion merit that can change.And in Figure 12 B, curve 1,2 represents respectively compressed-air actuated isothermal, adiabatic expansion among the figure, and actual puffing process is between curve 1,2.A is starting point among the figure, and the pressure classification point when B, C, D, E are the control of corresponding transfer pressure has endothermic process such as the appearance of grade, such as BC and DE etc. at these some places.Theoretically, curve 1 and coordinate figure V ₁, V ₂Between the energy of the cartographic represenation of area pressurized air storage that comprises discharge the gas expansion merit that can change.

The inflation pressure of supposing high pressure gas holder is p ₁, the gas storage volume is V ₁Perfect gas in complete isothermal expansion to normal pressure p ₂Whole expansion works that Shi Suoneng does are:

p ₁V ₁＝p ₂V ₂ (2)

In the formula, (p ₁, V ₁) and (p ₂, V ₂) being corresponding initial, end of a period state, the end of a period state after the adiabatic expansion is (p ₂, V ' ₂).

The parameter of choosing French MDI company motor is initial gas storage pressure p ₁=30MPa, gas storage volume V ₁=300L, the pressure p under the end of a period room temperature state ₂=0.1MPa can be calculated whole expansion work W=51.334MJ of the complete isothermal expansion between initial, end of a period state by formula (1), formula (2).

The operating temperature of supposing compressed-air power engine is 300K, and the compressed-air actuated quality that can obtain under 300L, the 300MPa air pressure is 104.553 kilograms, and the quality of supposing gas holder is double centner, and then corresponding specific energy is about 75Wh/kg.The on-vehicle battery of comparing, for example lead-acid battery and nicad battery, it is high that compressed-air actuated specific energy is wanted, and equal substantially Ni-MH battery, has preferably development prospect.Along with the development of the large capacity of high pressure tank, large pressure and lightweight, compressed-air actuated specific energy also has significantly raising, even can be near sodium-sulphur battery and lithium polymer battery.

Pressurized air has two kinds of acting forms in motor, i.e. isothermal expansion process and adiabatic expansion, and the below is with both characteristics of design parameter calculation specifications.

Choose original state 1 (30MPa, 300K), end of a period state 2 (0.1MPa, 300K), the expansion work of asking unit mass pressurized air to do in isothermal process and adiabatic process respectively.Isothermal expansion process unit mass gas institute work is W=491kJ/kg, and adiabatic expansion unit mass pressurized air institute work is W '=242.3kJ/kg.Calculated as can be known by theory, the expansion work of isothermal process almost is 2 times of adiabatic expansion, so the capacity usage ratio of isothermal expansion is higher than adiabatic expansion, and it is desirable adopting in theory the isothermal expansion acting.But " isothermal " is to be difficult to realize in cylinder, must have a second heat conductance to enter motor machine wall to keep enough heats.This has just increased technical difficulty, makes the engine structure complex.

The below further utilizes angle that two kinds of power distribution patterns of compressed air engine are discussed from compressed air energy.

Under parallel way, the pressurized gas of equivalent is input to the acting of expanding of each cylinder simultaneously.If original state 1 (30MPa, 300K), end of a period state 2 (0.1MPa, 300K), pressurized air carries out isothermal expansion in cylinder, and isothermal is similar to rate η=80%, cylinder number is 4 cylinders, and the pressurized air that enters motor is 1 kilogram of unit mass, and total technology merit that 4 cylinder gases are done is

As seen, although the isothermal expansion process is desirable acting process, the gas volume after expanding is 300 times before expanding.This just needs the cylinder of acting must have very large volume.If the cylinder of the cylinder that adopts available engine after as isothermal expansion, selecting compression ratio is 10, then

W=198.3kJ/kg.Obviously, the technology merit greatly reduces, the technology merit of not only doing not as adiabatic expansion, and also residual pressure is very high, and energy does not take full advantage of.But the advantage of parallel way is that each cylinder structure is measure-alike, arranges simply, and power output steadily.Consider present technology, cylinder can not keep complete isothermal, and the compression ratio of cylinder can not be done too much, the head pressure of pressurized gas after the acting of expanding is higher, still can be used for continuing acting, therefore adopting multistage adiabatic process or closed loop to reclaim the energy of tail gas, is at present comparatively practicality, effective mode.

Under serial fashion, with pressurized air successively adiabatic expansion acting in each cylinder, the Exhaust Gas of previous stage cylinder is the initial pressure of next cylinder.Through theoretical calculation analysis as can be known: serial graded is more, and the series connection cylinder number that namely uses is more, and the pressurized air institute work of unit mass is more, and capacity usage ratio is higher, and the level Four of generally connecting can realize 80% of complete isothermal expansion acting; In other series connection of ad eundem, the pressure value of intermediateness is different, and is not little to total technology work difference.The greatest problem of serial cylinders is that the volume of rear one-level cylinder all is greater than the volume of cylinder of previous stage, and all will load heat exchanger so that isobaric heat absorption between the cylinder at different levels.Thus, increasing to the size requirement of motor, can have a strong impact on the integral layout of the equipment that uses compressed air engine.

By upper analysis as seen, compressed air engine is different from traditional fuel engine and various electric power device, and it is feasible in principle, and the strategy of sustainable development that meets environmental protection, economizes on resources.And other forms such as that pressurized air convenient sources, energy storage mode are better than is electric, hydraulic pressure.Compressed-air actuated power distribution form respectively has pluses and minuses, improves the pressurized air utilization efficiency, and increasing pressure pan capacity and inflation pressure is to improve the Main Means of once inflating continuous working period.In the situation that tank holds, inflation pressure is determined relatively, compressed air energy utilization rate η is maximum running parameter.The problems such as engine structure optimization, off gas energy recovery, pressurized air distribution are the problems that needs further investigation.

Through above-mentioned theory analysis, the application's claimant adopts compressed-air actuated power allocation model in parallel, in order to improve the pressure of compressed air energy utilization rate and the rear Exhaust Gas of acting, the claimant adopts tail gas recycling loop, and the below will describe in detail concrete mode of the present invention.

With reference now to Fig. 1,, Fig. 1 is that the arrow among the figure represents the flow direction of air draught according to the general illustration of two-stroke compressed air engine assembly of the present invention.In Fig. 1, the compressed air engine assembly comprises engine body 1, multicolumn body power distribution device 2, power equipment 4, controller system 6, air compressor 7, condenser 11, tail gas recycle tank 9, high pressure gas holder group 13, constant-pressure tank 16, air inlet control series flow control valve 23, the unidirectional air exhauster 19 of electric turbine, electronic control unit ECU 29 and exhaust gas sound-deadening device 22.As shown in Figure 1, high pressure gas holder group 13 is connected with external gas station or external aerator by compressed air inlet pipeline 14, to obtain required high pressure air from the external world.Compressed air inlet pipeline 14 is provided with flowmeter A, pressure meter P and manual switch (not shown).Flowmeter A is used for measurement and monitoring and enters the compressed-air actuated flow of high pressure gas holder group 13, and pressure meter P enters the compressed-air actuated pressure of high pressure gas holder group 13 for measurement and monitoring.When needs carry out aerating by external aerator or gas station to high pressure gas holder group 13, open manual switch, high pressure air enters high pressure gas holder group 13, when the flowmeter A on the compressed air inlet pipeline 14 and pressure meter P reach specified value, close manual switch, finish the gas replenishment process of high pressure gas holder group 13, so just can obtain under the rated pressure pressurized air such as 30MPa.In order to guarantee the Safety performance of gas holder, one, two or more safety valve (not shown) can be set on high pressure gas holder group 13.

High pressure gas holder group 13 can be to have one, two, three, four of enough capacity or more high pressure gas holder to combine with the form of serial or parallel connection, according to the actual demand of application, determines the composition gas tank number of high pressure gas holder group 13.High pressure gas holder group 13 is connected to constant-pressure tank 16 by pipeline 15, is provided with equally the flowmeter A and the pressure meter P that monitor respectively and control compressed air require and pressure on the pipeline 15.Constant-pressure tank 16 is used for stablizing the pressure from the high-pressure air of high pressure gas holder group 13, and its pressure is a little less than the pressure in the high pressure gas holder group 13, such as between 21-28MPa, preferably about 21MPa.Between constant-pressure tank 16 and air inlet control series flow control valve 23, be provided with pipeline 17, also be provided with the flowmeter A and the pressure meter P that monitor respectively and control compressed air require and pressure on the pipeline 17.Control and the adjusting of controlling series flow control valve 23 through air inlet from the high-pressure air of constant-pressure tank 16 enter controller system 6 by pipeline.

Describe now air inlet control series flow control valve 23 in detail.The effect of air inlet control series flow control valve 23 is to decide the pressurized air air inflow according to the opening time of the command signal control solenoid valve of electronic control unit ECU 29.Because solenoid valve has decompression, it has just formed series flow control valve with the combination of decompression pressure regulator valve, thereby can be with the adjustment of rotational speed of motor in a suitable scope.Control signal 26 controls that air inlet control series flow control valve 23 is sent by ECU 29.On engine body 1, optionally be provided with multiple sensors, such as the oily potentiometer of door of the velocity transducer of measuring engine speed, the position transducer of judging the cylinder top dead center position and decision gate oil pedal position, it can also be the temperature transducer of measuring the engine body temperature.According to exemplary embodiment of the present invention, show velocity transducer 24 and/or the oily potentiometer 242 of door.Velocity transducer 24 can be to measure the various velocity transducers of engine speed in the prior art, and usually is arranged on the bent axle 56.The oily potentiometer 242 of door can be the various position transducers of measuring accelerator pedal position in the prior art, and it is arranged on an oily pedal position place usually.In the occasion of non-vehicle application, the oily potentiometer of door that is similar to pedal position can be engine load sensor, selects the position transducer of knob etc. such as the electric current of control generation current size in the torque sensor of monitoring engine output torque, the occasion of generating electricity.ECU 29 is according to the signal of various sensors, such as any one or two in the position signal of the rate signal of velocity transducer 24 and the oily potentiometer 242 of door, send control signal 26 through calculation process, control signal 26 control air inlet control series flow control valves, thereby can realize high speed, middling speed, the low speed needs of air inlet control series flow control valve, thus corresponding to high speed, the middling speed of motor with slowly run.

Control the high pressure air of series flow control valve through pressure duct ramp metering device system 6 through air inlet, and provide high pressure air by controller system 6 to each cylinder of engine body 1, such as the pressure between about 7-18MPa, be preferably 9-15MPa, more preferably be 11-13MPa, to drive engine piston 51 in cylinder system 40 interior reciprocating (with reference to figure 2-6), and the rotatablely moving of the bent axle 56 that the to-and-fro motion of piston 51 is transformed into via connecting rod 54, thereby satisfy requirement under the various operating modes of motor.The concrete structure of controller system 6 will describe in detail later.

Continuation is with reference to figure 1, and the rotational motion of exporting from engine body 1 is assigned to application apparatus through multicolumn body power distribution device 2, and as shown in fig. 1, application apparatus comprises air compressor 7, power equipment 4.Air compressor 7 can be traditional vane compressor and piston compressor etc., also can be claimant's disclosed pressurization device in patent documentation (CN 201261386Y) of the application.Power equipment 4 can be transmission system, generator or transmission system etc.Multicolumn body power distribution device 2 can be fixedly connected with the flywheel on the bent axle 56, also can be by being connected with bent axle such as the link that is coupling.Multicolumn body power distribution device 2 is divided into two-way with power, and one the road distributes to power equipment 4, and air compressor 7 is distributed on another road.Power equipment 4 is connected with multicolumn body power distribution device 2 by the connection set of clutch 3 or similar functions, and air compressor 7 is by for example being that the coupling 5 of gearing is connected with multicolumn body power distribution device 2.When engine operation, the multicolumn body power distribution device 2 that rotarily drives of bent axle 56 turns round, and then power is distributed to respectively power equipment 4 and air compressor 7, thereby drives power equipment 4 and air compressor 7 work.

Because compressed air engine of the present invention is directly driven by high-pressure air, in the process of crankshaft rotating 0-180 degree, 51 motions of high pressure air drives piston, when piston arrives moves upward because of inertia after bottom dead center, bent axle is rotated further 180 degree-360 degree, motor carries out exhaust stroke, the gas of exhaust this moment still has higher pressure, for example be about 3MPa, Exhaust Gas with elevated pressures directly is discharged to and forms easily on the one hand high pressure exhaust gas stream in the atmosphere, cause the tail gas noise, on the other hand loss the energy that contains of pressurized air.Therefore, be an imperative key technology to the tail gas recycle of compressed air engine.Tail gas recycle structure of the present invention is summarized as follows:

The tail gas of discharging from the discharge header 28 of engine body 1 27 is transported to exhaust gas sound-deadening device 22 by the road, and the tail gas of processing through eliminating the noise is pumped to the unidirectional air exhauster 19 of electric turbine via pipeline 18.Be provided with pipeline 20 between the unidirectional air exhauster 19 of electric turbine and tail gas recycle tank 9, pipeline 20 is provided with one-way valve 21.The existence of one-way valve 21 only allows tail gas to enter tail gas recycle tank 9 from the unidirectional air exhauster of electric turbine, and does not allow the tail gas reverse flow.Pipeline 8 between tail gas recycle tank 9 and the air compressor 7 is provided with flowmeter A and pressure meter P, with flow and the pressure of the tail gas after examination and controlling compresses through air compressor 7 respectively.Increased significantly through its pressure of tail gas after air compressor 7 compressions, usually can reach about 20MPa to approximately between the 30MPa, enter condenser 11 through pipeline 10 subsequently, can directly send into high pressure gas holder group 13 by pipeline 12 through condenser 11 cooled tail gas, perhaps again by entering high pressure gas holder group 13 after the exhaust gas filter (not shown).Can alternatively also can the one-way valve (not shown) be set the pipeline between condenser (11) and high pressure gas holder group (13), only allow the unidirectional inflow high pressure gas holder of the clean tail gas group (13) after the supercharging.Thus, the high pressure air that be used for to drive engine piston 51 after acting its quite a few be recovered to the high pressure gas holder group after by tail gas recycling loop (comprising exhaust gas sound-deadening device, the unidirectional air exhauster of electric turbine, tail gas recycle tank 9, air engine 7, condenser 11 and the connecting pipeline between them) supercharging purification, thereby realized the recycling of tail gas.The existence of tail gas recycling loop has not only considerably solved the problem of noise pollution that the direct exhaust atmosphere of the tail gas (being generally about 3MPa) with equivalent pressure causes, and has effectively reduced the volume requirements problem to large capacity high gas tank group 13.In other words, for the high pressure gas holder group 13 of giving constant volume, the existence of tail gas recycling loop has increased the continuous working period of compressed air engine greatly, in the traffic tool or power generating equipment that use compressed air engine, greatly increase the continuous working period of the traffic tool or power generating equipment, thereby improved significantly the efficient of compressed air engine.

Get back to now Fig. 2 to Fig. 5, Fig. 2 to Fig. 5 has described the view of the engine body 1 Fig. 1 from different angles.Wherein, Fig. 2 is the front view of engine body, and Fig. 3 is the right, side view of engine body 1, and Fig. 4 is the left side side view of engine body 1, and Fig. 5 is the plan view of engine body.Further referring to Fig. 6 as can be known, engine body 1 comprises cylinder 40, cylinder cap system 36, air inlet pipeline 42 (valve trunnion), gas exhaust piping 27, piston 51, connecting rod 54, bent axle 56, exhaust cam shaft 800 (seeing Fig. 8), admission cam shaft 200 (being installed in the admission cam shaft mounting hole 113 among Fig. 9), front gear box system 43 and rear gear box 33.Front gear box system 43 is used for driving crank 56 and camshaft.Rear gear box 33 is provided with gear ring 31 and flywheel 32, and it can be connected to multicolumn body power distribution device 2.In the exemplary embodiment of this engine body 1, be respectively arranged with admission cam shaft 200 and exhaust cam shaft 800, they all link to each other with bent axle 56 by front gear box system 43, and do suitable rotation with the rotation of bent axle 56.Because control and the distribution of the direct controlled device of pressurized air air inlet system 6, thereby on engine cylinder convering system 36, cancelled suction valve, and outlet valve 62 only is set, in exemplary enforcement, outlet valve is 4 in each cylinder, also can be set to as required 1,2,4 or 6.Pressurized air from controller system 6 directly enters expansion exhaust chamber 63 (seeing Fig. 6) through valve trunnion 42, when engine operation, this pressurized air pushing piston 51 moves downward, piston 51 is converted into rotatablely moving of bent axle 56 by connecting rod 54 with the straight line motion of piston 51, and bent axle rotates the output that realizes motor.After piston 51 moved to lower dead center, bent axle 56 continued motion because of inertia, drive piston 51 and move to top dead center position from bottom dead center position, this moment exhaust cam shaft 800 by the cam on it and corresponding rocking arm, open outlet valve 62, carry out exhaust stroke.In the exemplary embodiment, the tail gas of discharge preferably enters tail gas recycling loop.

The starter 39 that also is provided with ato unit on the engine body 1 with by for example being generator 391, the cylinder block oil sump 44 that is used for lubricating oil return and the oil strainer 2 that machine oil is filtered that the connected element of belt pulley links to each other with bent axle.This generator 391 can such as integrate alternator, brushless type alternator, band pump formula alternator or permanent magnet generator etc., its when engine operation to the engine assembly power supply and give storage battery or the charging of storage battery (not shown).

With reference now to Fig. 6,, Fig. 6 is the bent axle-connecting rod-piston system assembly of the engine body 1 of the two stroke engine assembly among Fig. 1, wherein, shows being connected of one of them piston-linkage unit and cylinder 40.In the illustrated embodiment, preferably have 6 cylinders 40, correspondingly have 6 pistons 51 and 6 connecting rods 54.In alternative, the number of piston 51, cylinder 40 and connecting rod 54 can be respectively that those skilled in the art can conceivable 1,2,4,6,8,12 or other number numbers.Correspondingly, bent axle 56 makes to adapt to the ground compatibility design, to adapt to piston-linkage unit number.In the exemplary embodiment, such as Fig. 6 and seen in fig. 7, bent axle 56 preferably has 6 unit crank throws, its corresponding the preferred embodiments of the invention.Continuation is with reference to figure 6, in being connected of shown one of them piston-linkage unit and cylinder 40, directly enters expansion exhaust chamber 63 via air inlet pipeline 42 by the gas larynx hole 402 on the cylinder head 36 from the high pressure air of controller system 6.Pressurized gas are in the 63 interior expansion actings of expansion exhaust chamber, and pushing piston 51 moves downward, and this is expansion stroke.The merit of expansion stroke output is by the outside outputting power of crankshaft rod system.When piston 51 was moved to top dead center position by bottom dead center position in cylinder 44, outlet valve 62 was opened, and had in the air self-expanding exhaust chamber 63 of certain pressure to discharge via outlet pipe 27, and this is exhaust stroke.During near top dead center, outlet valve 62 is closed at piston 51, and controller system 6 begins again to be expansion exhaust chamber 63 air feed, enters next circulation.Obviously, bent axle 56 every rotation one circles (360 degree) of motor of the present invention, just do work once, and unlike traditional four stroke engine, in the process of bent axle rotation two circles (720 degree), finish once complete air inlet, compression, expansion and exhaust stroke.These are but different from traditional two stroke engine just as two stroke engine, because traditional two stroke engine is provided with suction port in cylinder bottom usually, and are provided with scavenging port and relief opening in the cylinder appropriate location.And two stroke engine of the present invention to be napex at cylinder be provided with for the gas larynx hole 402 of high pressure air air inlet and be used for the exhaust port 272 of exhaust emissions, and the connected sum closure in gas larynx hole 402 is that admission cam shaft 200 is realized by controller system 6, and the connected sum closure of exhaust port is to drive exhaust cam shaft 800 by bent axle to rotate, and opening and closing by rocking arm control outlet valve 62 realize.Therefore two stroke engine of the present invention is to be different from traditional two stroke engine fully, but it has effectively utilized the high-pressure air of direct expansion acting, bent axle 56 every rotations once 51 actings of circle piston once, thereby in identical air displacement situation, traditional four stroke engine of comparing, power can double.

With reference now to Fig. 5 and Fig. 6,, bent axle 56 comprises gear connecting bolt 79, crankshaft front end 80, helical gear 61, main journal 78, unit crank throw 71, balancer weight 77, crank pin 76, crankshaft rear end 75 and flywheel connecting bolt 72.Be respectively equipped with one or more oil lubricating oilholes on main journal 78 on the bent axle 56 and the crank pin 76, in order to provide lubricating oil for bent axle.The right side of crankshaft front end 80 (as shown in FIG. direction) adjacent is provided with gear connecting bolt 79, to be connected with respective gears in the front gear box system 43, the left side of crankshaft front end 80 (as shown in FIG. direction) adjacent is provided with helical gear 61, rotates to drive camshaft.The adjacent position, the outside of crankshaft rear end 75 is provided with flywheel connecting bolt 72, to form a fixed connection with flywheel 32.Be equipped with one, two or more counterweight holes on the balancer weight 77, with the heavy amount of adjustment.In a preferred embodiment of the invention, the unit crank throw 71 of bent axle comprises six unit crank throws, is respectively first module crank throw 71a, second unit crank throw 71b, the 3rd unit crank throw 71c, the 4th unit crank throw 71d, the 5th unit crank throw 71e, the 6th unit crank throw 71f.It corresponds respectively to the first to the 6th connecting rod 54 or piston 51.In alternative, unit crank throw 71 can comprise the unit crank throw of different numbers, and such as 1,2,4,6,8 or more, these all are that those skilled in the art expect easily.In the preferred embodiment in Fig. 6 or Fig. 7, the phase place of each unit crank throw is set as follows: first module crank throw 71a and second unit crank throw 71b differ 120 degree, second unit crank throw 71b and the 3rd unit crank throw 71c differ 120 degree, the 3rd unit crank throw 71c and the 4th unit crank throw 71c differ 180 degree, the 4th unit crank throw 71d and the 5th unit crank throw 71e differ-120 spend, the 5th unit crank throw 71e and the 6th unit crank throw 71f differ-120 and spend.Crank throw unit under so arranging, can realize that the job order of crank throw unit is: the first and the 5th unit crank throw is worked simultaneously, and then the 3rd and the 6th unit crank throw is worked together, and the second last and the 4th unit crank throw are worked together.Thus, the job order of corresponding cylinder is: 1-5 cylinder, 3-6 cylinder and 2-4 cylinder.According to instruction of the present invention, those skilled in the art can arrange and be different from unit of the present invention crank throw and work phase place and job order, but it all falls within the scope of the invention.

Continuation is with reference to figure 6, and piston 51 is connected with bent axle 56 by connecting rod 54.Connecting rod 54 comprises connecting rod small end, connecting rod shank and connnecting rod big end.Connnecting rod big end comprises connecting rod cap 58, and the conglobate space of inboard shape of connecting rod cap 58 is with by placing the connecting rod bearing shell 57 in the space to be connected with the crank pin 76 of bent axle.The external peripheral surface of piston 51 is provided with tetrafluoroethylene oil blocking ring 53 and tetrafluoroethylene piston ring 52.In illustrated exemplary embodiment, be provided with 4 road

tetrafluoroethylene piston rings

52 and 2 road tetrafluoroethylene oil blocking rings 53 on each piston 51.In alternative, the number of tetrafluoroethylene oil blocking ring 53 and tetrafluoroethylene piston ring 52 can change, and for example all can be 2 roads, 3 roads, 4 roads or multiple tracks more.Tetrafluoroethylene oil blocking ring 53 plays the oil resistance effect, 52 knife-type oil stripping actions of tetrafluoroethylene piston ring, and their actings in conjunction guarantee reliably lubricated and sealing of lubricant oil.

With reference now to Fig. 8,, Fig. 8 is exhaust cam shaft 800 structural representations of the engine body 1 among Fig. 2.Exhaust cam shaft 800 comprises unit cam 81 and sprocket wheel 83.In the exemplary embodiment, unit cam 81 comprises 6 unit cams, and it is respectively first module cam 81a, second unit cam 81b, the 3rd unit cam 81c, the 4th unit cam 81d, the 5th unit cam 81e, the 6th unit cam 81f.In alternative, the number of unit cam 81 can be 1,2,4,6,8,12 or more, and this depends on the outlet valve number of cylinder number and each cylinder.In exemplary embodiment of the present invention, each unit cam 81 comprises two cams 82, the unlatching of each cam 82 its corresponding outlet valve 62 of control.In the preferred embodiment in Fig. 8, the phase place of unit cam 81 is set as follows: first module cam 81a and second unit cam 81b differ 120 degree, second unit cam 81b and the 3rd unit cam 81c differ 120 degree, the 3rd unit cam 81c and the 4th unit cam 81c differ 180 degree, the 4th unit cam 81d and the 5th unit cam 81e differ-120 spend, the 5th unit cam 81e and the 6th unit cam 81f differ-120 and spend.Unit cam under so arranging, can realize that the job order of unit cam is: the first and the 5th unit cam is worked simultaneously, and then the 3rd and the 6th unit cam is worked together, and the second last and the 4th unit cam are worked together.Thus, the job order of corresponding cylinder is: 1-5 cylinder, 3-6 cylinder and 2-4 cylinder.According to instruction of the present invention, those skilled in the art can arrange and be different from unit of the present invention cam and work phase place and job order, but it all falls within the scope of the invention.

With reference now to Fig. 9,, Fig. 9 A-Fig. 9 B is referred to as Fig. 9, and it is the view of the controller system 6 of the two-stroke compressed air engine assembly among Fig. 1.As shown in Figure 9, controller system 6 comprises seat 98, controller valve 92, controller spring 94 and controller loam cake 108 in high-pressure common rail constant voltage pipe 91, lower 97 of controller, the controller.High-pressure common rail constant voltage pipe 91 has cylindrical outer shape, and it also can be the profiles such as rectangle, triangle.High-pressure common rail constant voltage pipe 91 is inner for for example being columniform cavity, to accept the high pressure admission from air inlet control series flow control valve 23, and keep substantially the compressed air pressure in the cavity balanced, in order to make the high-pressure air in the expansion exhaust chamber 63 that initially enters each cylinder 40 have identical pressure, thereby make engine mildness.The two ends of high-pressure common rail constant voltage pipe 91 fixedly are equipped with high-pressure common rail constant voltage pipe end-cap 100, the end cap 100 that is connected at itself and air inlet control series flow control valve 23 has outward extending flange (unmarked among the figure), this flange extend in the pipeline between high pressure admission control series flow control valve 23 and the high-pressure common rail constant voltage pipe 91, and by for example being that the Placement of screw thread removably is fixedly connected with pressure duct.High-pressure common rail constant voltage pipe end-cap 100 is connected with high-pressure common rail constant voltage pipe 91 by end cover connecting bolt.High-pressure common rail constant voltage pipe 91 is provided with the loam cake attachment hole 111 corresponding to the number of cylinder 40, and in illustrated preferred embodiment, the number of loam cake attachment hole 111 is 6.Controller loam cake 108 has inverted T-shaped at the section along its center line, it has columniform air inlet pipeline 112 and circular lower surface (unmarked among the figure), prop up air inlet pipeline 112 by its peripheral being threaded onto in the loam cake attachment hole 111 in upper end, removably be connected to form to fix with high-pressure common rail constant voltage pipe 91.Controller loam cake 108 by seat 98 in loam cake and middle seat connecting bolt or other fastening pieces and the controller form seal, detachably be fixedly connected with.Seat 98 forms detachably being fixedly connected with of sealing with a lower connecting bolt 110 or other fastening pieces with lower 97 of controller by middle seat in the controller.

As shown in Figure 9, seat 98 is provided with the different hole of diameter in heart place therein in the controller, is followed successively by from top to bottom controller valve seat trepanning 120, controller valve port 117, oil sealing bush hole 116, controller valve spring hole 119.In the exemplary embodiment, the diameter in hole 120 is greater than the diameter in hole 117 and greater than the diameter in hole 116.The diameter in hole 117 is greater than the diameter in hole 116.The diameter in hole 119 can be with identical or different with the diameter in hole 117, but require the diameter greater than hole 116.In a preferred embodiment, the diameter in hole 119 equals the diameter in hole 117, but is slightly less than the diameter in hole 120.Controller valve cover for seat 93 is installed in the controller valve seat trepanning 120, and is supported on the controller valve port 117.Controller valve port 117 is cavity, and it is communicated with gas larynx hole attachment hole 118, with when controller valve 92 is opened, will enter gas larynx hole attachment hole 118 via an air inlet pipeline 112 from the pressurized air of high-pressure common rail constant voltage pipe 91.One end of gas larynx hole attachment hole 118 is communicated with controller valve port 117, the gas larynx hole 402 of the other end communicated cylinder convering system 36, it keeps normal open, thereby can be when controller valve 92 is opened, pressurized air is sent into expansion exhaust chamber 63, thereby drive engine operation.Oil sealing lining 99 is installed in the oil sealing bush hole 116, and is supported on the controller valve spring 94, passes through the valve stem (unmarked among the figure) of controller valve 92 in it.This oil sealing lining 99 also play the guiding role to valve stem except controller valve 92 is sealed.Controller valve spring 94 is installed in the controller valve spring hole 119, and its lower end is supported with lower 95 of controller valve spring, and is fastened on lower 95 of the controller valve spring by controller valve collet sheet.When motor is not worked, the pretensioning that 94 preloads of controller valve spring are certain, it is resisted against controller valve 92 on the controller valve block set 93, and controller valve 92 is closed.

Lower 97 inside of controller are provided with 6 exemplary controller tappet mounting holes 114, it is according to the difference of cylinder number, the controller tappet mounting hole 114 of different numbers can be set, and for example can be 1,2,4,6,8,10 or more.Controller tappet 115 is installed in the controller tappet mounting hole 114, and pumps with admission cam shaft 200 rotations that are installed in the admission cam shaft mounting hole 113.When needs provide high pressure air to cylinder 40, the cam of the admission cam shaft 200 jack-up controller tappet 115 that makes progress, controller tappet 115 is the valve stem of jack-up controller valve 92 then, so that valve stem overcomes the pulling force of controller valve spring 94, leave controller valve block set 93, thereby the controller valve is opened, and high pressure air is able to enter expansion exhaust chamber 63 from high-pressure common rail constant voltage pipe 91, to satisfy the air feed demand of motor.After admission cam shaft 200 turned over several angle with bent axle 56, the valve stem of controller valve 92 had been seated on the controller valve block set 93 under the restoring force effect of controller valve spring 94 again, and controller valve 92 is closed, and air feed finishes.Because compressed air engine of the present invention is two stroke engine, 56 every one weeks of rotation of bent axle, controller valve 92 and outlet valve 62 each switching are once, therefore, be easy to arrange the annexation of the cam phase of admission cam shaft 200 and exhaust cam shaft 800 and they and bent axle, the exemplary illustration of seeing Figure 10 is transmitted in its detailed structure and motion.

With reference now to Figure 10,, Figure 10 A-Figure 10 C is referred to as Figure 10, and it is the different views of the front gear box system 43 of the two-stroke compressed air engine assembly among Fig. 1.As shown in figure 10, the front gear box system comprises polygonal lid 313, driving gear 308, crankshaft gear 307, carrier gear 303, intake cam shaftgear 302, exhaust cam shaftgear 306.Crankshaft gear 307 is fixedly connected with bent axle 56 1 ends that pass polygonal lid 313, to transmit the rotation from bent axle.It for example is the driving gear 308 of oil pump gear that the below of crankshaft gear 307 (orientation shown in Figure 10 B) is provided with, and for example is the member rotation of oil pump to drive by driving gear 308.(orientation shown in Figure 10 B) is disposed with intake cam shaftgear 302, carrier gear 303, exhaust cam shaftgear 306 from left to right above crankshaft gear 307.Crankshaft gear 307 directly engages to drive carrier gear 303 with carrier gear 303 and rotates.Carrier gear 303 engages with intake cam shaftgear 302 and the exhaust cam shaftgear 306 of the left and right sides simultaneously, with when bent axle 56 rotates, drive the rotation of intake cam shaftgear 302 and exhaust cam shaftgear 306 by crankshaft gear 307, carrier gear 303, thereby admission cam shaft 200 and exhaust cam shaft 800 are rotated, finally realize the opening and closing of outlet valve 62 and controller valve 92.In the exemplary embodiment, exhaust cam shaftgear 306 directly is fixedly connected on the exhaust cam shaft 800, thereby the rotation of exhaust cam shaftgear 306 directly drives the rotation of exhaust cam shaft 800.And be fixed with the belt pulley (not shown) on the appropriate location of the central shaft of intake cam shaftgear 302, this belt pulley is connected with belt pulley on being arranged on admission cam shaft 200 by camshaft drivign belt 35, rotate thereby drive admission cam shaft 200, realize the opening and closing of controller valve 92.In alternative, also can be fixed with the sprocket wheel (not shown) on the appropriate location of the central shaft of intake cam shaftgear 302, this sprocket wheel is connected with sprocket wheel on being arranged on admission cam shaft 200 by chain, rotate thereby drive admission cam shaft 200, realize the opening and closing of controller valve 92.

Polygonal lid 313 is provided with the hole of a plurality of not same-actions, for example screw connecting hole 309, screw hole 310 and bolt connecting hole 311.Polygonal lid 313 is connected by screw hole 309 and is connected on the engine housing, and carrier gear 303 is connected on the polygonal lid 313 by screw hole 310, and bolt connecting hole 311 is used for polygonal lid 311 is connected with engine housing.Bolt connecting hole 311 can be arranged in the welded post 5 that is welded on the polygonal lid 311.Also be provided with for the oilhole 304 of lubricating oil flow with for the rings seat 12 that suspension ring are installed on the polygonal lid 311.

With reference now to Figure 11,, Figure 11 A-Figure 11 C is referred to as Figure 11, and it is the different views of the multicolumn body power distribution device 2 of the two-stroke compressed air engine assembly among Fig. 1.Exemplary embodiment of the present invention as shown in figure 11, multicolumn body power distribution device 2 is multistage power distribution devices, it is comprised of one-level 601, secondary 602, three grade 603, level Four 604, Pyatyi 605 (direction shown in Figure 10 B is from left to right).In alternative, multicolumn body power distribution device can be comprised of other levels that are not used in Pyatyi of the present invention, such as three grades, level Four, six grades or seven grades etc.The structure of every one-level is substantially identical, includes planetary pinion 401, ring gear 407 and sun gear 405.Can evenly set as required the number of the planet wheel of every one-level, for example 3,5,7 or more.In the exemplary embodiment, every one-level includes 5 equally distributed planetary pinions 401.The benefit of doing like this is that planetary even distribution can make the stressed even of main shaft, and stable drive and transmission power are large.Shown in Figure 11 B, connect by planetary pinion pin 403 between the planetary pinion 401 of one-level 601 and secondary 602, so that one-level 601, secondary 602 are rotated synchronously.Planetary pinion pin 403 is connected with planetary pinion 401 by smooth flat key 4021 or spline.In the exemplary embodiment, planetary pinion pin 403 can be thin columniform pin, and its profile also can be rectangle, trapezoidal, semicircle, and its number can be that every one-level adopts two, three, four, five or more.Secondary 602 with are connected grades 603 sun gear 405 and connect by sun gear pin 406, to realize the interlock of secondary 602 and three grade 603.Annexation between three grade 603 and the level Four 604 is similar to the annexation between one-level 601 and the secondary 604, and the annexation between level Four 604 and the Pyatyi 605 is similar to the annexation between secondary 602 and three grade 603.Thus, the one-level 602 of multicolumn body power distribution device 4 has realized the transmission of power to Pyatyi 603, can be from power input output from Pyatyi 605 of one-level 601.What especially note is, 401 of the planetary pinions of every one-level are done the autobiography motion around self axis, and do not make revolution motion around corresponding sun gear 405, and such layout makes the internal structure of multicolumn body power distribution device relatively simple, is easy to reposefully transferring power.

The working principle of multicolumn body power distribution device 2 is described now.The bent axle 51 of engine body 1 is provided with flywheel 32, the periphery of flywheel 32 is fixedly connected with gear ring 31, this gear ring 31 has external toothing, 407 engagements of the ring gear with internal tooth on the one-level 601 of itself and multicolumn body power distribution device 2 are delivered to the ring gear 407 of one-level 601 with the motion with bent axle 56.The planetary pinion 401 of one-level 601 is connected with the planetary pinion of secondary 602, and power is delivered to secondary 602 from one-level 601, and the sun gear 405 that the planetary pinion 401 of secondary 602 drives secondary rotates.The sun gear 405 of secondary is connected by the sun gear of sun gear pin 406 with three grades, and the sun gear 405 that drives three grades rotates, and power is delivered to three grade 603 from secondary 602.Three grade 603 being similar to the mode of one-level 601, with three grade 603 power by planetary pinion 401 with transmission of power to level Four 604.Level Four 604 is delivered to Pyatyi 605 with the power of level Four 604 by sun gear 405 in the mode that is similar to secondary.In an embodiment of the present invention, the rotatingshaft of the planetary pinion 401 of Pyatyi 605 is clutch end, power is divided into multichannel (the present invention exemplarily shows two-way) by planetary pinion 401 and is delivered to the element that is connected with multicolumn body power distribution device 2, for example in exemplary embodiment of the present invention, this element is such as the power plant 4 and the air compressor 7 that are generator.So, power is realized multichannel output from bent axle 56 outputs of motor by multicolumn body power distribution device 2.Compare conventional engines gearbox advantageously, adopt the planetary transmission of Pyatyi to carry out the power reallocation, namely realized the laborsaving torque vibration that has reduced again in transmitting.

This specification at length discloses the present invention, comprises optimal mode, and also can make related domain anyone put into practice the present invention, comprise the method for making and using any equipment or system and carry out any introducing.

Protection scope of the present invention is limited by accessory claim, and can be included in various modification, remodeling and the equivalents of doing for the present invention in the situation that does not break away from protection domain of the present invention and spirit.

Claims

1. the compressed air engine assembly that has tail gas recycling loop, it comprises: engine body (1), and it comprises cylinder (40), cylinder cap system (36), air inlet pipeline (42), gas exhaust piping (27), piston (51), connecting rod (54), bent axle (56), exhaust cam shaft (800), admission cam shaft (200), front gear box system (43) and rear gear box (33); Described piston (51) is connected to bent axle (56) via connecting rod (54); Described front gear box system (43) is used for driving crank (56) and camshaft (800,200); Described cylinder cap system (36) is provided with for the gas larynx hole (402) of pressurized air air inlet and is used for the exhaust port (272) of exhaust emissions; High pressure gas holder group (13), it is communicated with external aerator by pipeline (14); Constant-pressure tank (16), it is communicated with high pressure gas holder group (13) by pipeline (15); It is characterized in that described compressed air engine assembly also comprises: air inlet control series flow control valve (23), it is communicated with constant-pressure tank (16) by pipeline (17); Controller system (6); Multicolumn body power distribution device (2), it is connected with the bent axle (56) of engine body (1); Power equipment (4), it is connected with multicolumn body power distribution device (2) via clutch (3); Electronic control unit ECU (29), the SC sigmal control air inlet control series flow control valve (23) that it detects according to sensor (24,242); And tail gas recycling loop.

2. engine assembly according to claim 1 is characterized in that, described engine assembly is two stroke engine assembly.

3. engine assembly according to claim 1 and 2, it is characterized in that described tail gas recycling loop comprises: discharge header (28), air compressor (7), condenser (11), tail gas recycle tank (9), the unidirectional air exhauster of electric turbine (19) and exhaust gas sound-deadening device (22); Wherein, tail gas enters exhaust gas sound-deadening device (22) by discharge header (28), and be sucked in the tail gas recycle tank (9) by the unidirectional air exhauster of electric turbine (19), the tail gas that is gathered in the tail gas recycle tank (9) is sent into high pressure gas holder group (13) after air compressor (7) compression supercharging is by condenser (11) cooling processing.

4. engine assembly according to claim 1 and 2, it is characterized in that, described air compressor (7) is connected with multicolumn body power distribution device (2) by coupling, work from the motivational drive air compressor (7) that multicolumn body power distribution device (2) transmission is come, with the tail gas of compression from tail gas recycle tank (90).

5. each described engine assembly is characterized in that according to claim 1-2, is provided with one-way valve (21) between the unidirectional air exhauster of electric turbine (19) and tail gas recycle tank (9).

6. engine assembly according to claim 3 is characterized in that, also is provided with exhaust gas filter and/or one-way valve on the pipeline between condenser (11) and the high pressure gas holder group (13).

7. engine assembly according to claim 2 is characterized in that, described air inlet control series flow control valve (23) is the combination of electromagnetic proportional valve or electromagnetic proportional valve and reduction valve.

8. engine assembly according to claim 2, it is characterized in that, described controller system (6) comprises seat (98) and lower of controller (97) in high-pressure common rail constant voltage pipe (91), controller loam cake (108), the controller, and seat (98) and lower of controller removably are tightly connected by bolt successively in described controller loam cake (108), the controller.

9. engine assembly according to claim 2 is characterized in that, described sensor is engine rotation speed sensor (24).

10. engine assembly according to claim 2 is characterized in that, described sensor is an oily potentiometer (242).