CN206397619U - A kind of pulse-knocking engine of side exhaust - Google Patents

Abstract

The utility model discloses a kind of pulse-knocking engine of side exhaust, at least it is made up of nose cone, detonation tube, side valve, side air bleeding valve, main fuel spray nozzle, detonation fuel nozzle and igniter；Detonation tube is closed at both ends, is divided into preceding main shot room and posterior blasting chamber by one piece of sieve plate；Blasting chamber includes a mouse cage component；Side valve is arranged alternately on the tube wall of detonation tube vertically with side air bleeding valve；Main fuel spray nozzle and detonation fuel nozzle are axially distributed on the inside pipe wall of detonation tube；When engine works, multiple main fuel spray nozzles spray into atomized fuel into main shot room, while the fuel nozzle that detonates sprays into gasification detonation fuel into blasting chamber；Igniter ignites the explosive gas mixture in blasting chamber and then ignites the cloud mixture in main shot room, and the shock wave of generation produces main thrust on thrust wall；Explosion gas product sprays backward from multiple side air bleeding valves, produces further thrust；By-pass air duct can be installed outside detonation tube additional, to reduce resistance during high-speed flight.

Description

A kind of pulse-knocking engine of side exhaust

Technical field

The utility model is related to aero-engine technology field, more particularly to a kind of pulse-knocking engine of side exhaust.

Background technology

Pulse-knocking engine (Pulse Detonation Engine abbreviation PDE) is one using detonation wave as main thrust New concept engine is planted, when engine works, fuel is burnt in the detonation chamber of engine in violent pinking mode, extremely short Very high temperature and pressure is produced in time（Pressure may be up to 100 atmospheric pressure, and temperature is up to 2000 DEG C）, while what is produced is quick-fried Seismic wave (category shock wave) is propagated with supersonic speed（Thousands of meter per seconds）Act on and thrust, HTHP are produced on the thrust wall of engine Combustion product at a high speed spray engine when produce extra thrust;Because detonating combustion is burnt for intermittent pulses formula, so should Engine is a kind of unsteady propulsion system.Relative to traditional propulsion system, it is a series of unique that PDE has the advantages that, due to quick-fried The pressure and temperature of explosive mixture can be increased to very high degree by seismic wave in very short time, therefore eliminate traditional hair Motivation is used for the part (such as compressor) being pressurized, and makes the structure of engine and becomes very simple, amount of parts greatly reduces, because This pulse-knocking engine size is small, lightweight, and PDE combustion process is approximately isochoric combustion in addition, and the thermal efficiency is reached as high as 49%, far above the thermal efficiency (27%) of conventional engines.PDE these features make it have widely in Aeronautics and Astronautics field Application prospect, it is estimated that, PDE thrust-weight ratio is up to 20, range of Mach numbers 0 ~ 10（Air suction type is 0 ~ 5）, flying height scope 0 ~ 50km, thrust range 0.5kg ~ 50000kg.The rotary part that PDE is not easily damaged, therefore structure is simpler, safeguards and more holds Easily.It can as guided missile, target drone, bait machine, UAV, UCAV power, it can also be used to manned aircraft Power set, realize the intercontinental navigation of high speed；Space craft propulsion is possibly used in the future, is used as lunar lander, interspace trip Trip aircraft or the power for entering orbit aerocraft, will bring revolution to space transoportation；In recent years its civil area application, Attention is also result in, is such as used for high efficiency and generates electricity.It is contemplated that, once detonation engine technology maturation, will navigate to aviation It and energy field produce revolutionary impact.

According to the number of PDE detonation tubes, PDE can be divided into single tube/multitube PDE, can be divided into gas phase and liquid phase according to fuel forms Fuel PDE, can be divided into Self inhaling type/rocket type PDE according to the source of oxidant；It can be divided into no-valve type according to intake method（Gas Dynamic formula）With there is valve type（Such as rotary valve）PDE.According to application mode, PDE can be divided into pure PDE (pure PDE), combined PDE (combined PDE), hybrid PDE (hybrid PDE) three major types.Pure PDE is mainly made up of detonation tube, air intake duct, jet pipe； Hybrid PDE is to be combined by PDE with turbojet or turbofan, such as uses PDE in by-pass air duct or reinforcing section；Combination PDE be by PDE is combined with conventional engines such as punching engine, scramjet engine, rocket engine equal power device, not In same velocity interval, different working cycles are run；It has in common that fuel is with air mixture in the way of pinking Burning, this violent course of reaction produces high temperature and high pressure gas, after cycle frequency reaches to a certain degree（About 100 hertz）, just The thrust of approximate continuous can be provided.

The mixture of fuel and air quickly and reliably detonates, and is the important prerequisite of PDE normal works, and detonation mode has Two kinds, one kind is direct initiation, and one kind is indirect detonation, i.e., develop into pinking by detonation（DDT）；Former mode needs high Ignition energy, the requirement to ignition installation is very high, does not possess practicality, therefore typically uses latter approach；So, fuel is empty How quickly the detonation problem of gas mixture is just concentrated on to realize detonation in the conversion of pinking.

Air is the action that must be completed before DDT the good blending flowed with fuel, and current PDE air intake duct is each provided at hair Foremost, air flows into detonation chamber to motivation from front end, fuel air mixture is formed after fully being blended with the fuel of penetrating, so Detonated afterwards by DDT in main shot room, to prevent detonation wave or combustion product enter air intake duct from causing air inlet abnormal, PDE is generally needed One isolated area is set between air intake duct and detonation chamber；It is mechanical valve type PDE and pneumatic by PDE points according to isolation method Valve type PDE；Mechanical valve is in detonation, pinking propagation and exhaust process, and valve is closed, and valve is opened during air inlet；Mechanical valve is asked Inscribe and be that very big windward side can be caused when valve is closed to air intake duct, air can produce very big resistance damage come the stagnation flowed Lose；The mechanical valve of current comparative maturity is rotary valve, it is necessary to special driven by power, and the sealing of rotary valve is highly difficult, mill Damage serious, rotary valve is confined to multitube PDE occasions in addition；Pneumatic operated valve then utilizes aerodynamic principle, realizes positive flow resistance Small, the big function of reverse flow resistance forms the effect for being similar to closing, advantageously forms detonation wave, but existing pneumatic operated valve pattern Completely enclosed effect is still unable to reach, still has a small amount of combustion product reversely to flow out air intake duct from air intake duct and forms negative thrust, Meanwhile, the presence of pneumatic operated valve inevitably affects the design of thrust wall, prevents it from optimal working condition.This Outside, in order to shorten DDT distances, current PDE is using the measure of some reinforcing detonations, such as using Shchelkin spiral, metal Ring, orifice plate, centerbody etc.；Although these measures are conducive to fuel blending and shorten DDT distances, but also have impact on simultaneously positive quick-fried The propagation of seismic wave, causes very big thrust loss, and this is the problem of can not be ignored.

In addition, the ejection of pinking after-explosion gaseous product, the operating mode of pulse detonation engine also has a major impact；Exhaust Time is too short, causes residual explosion gas product in detonation tube excessive, and the filling effect of influence fresh air can make pipe when serious Interior oxygen content is not enough and causes that fuel gas mixture can not be ignited；Evacuation time is long, then reduces the detonation frequency of engine to drop Low-thrust；The detonation tube of traditional pulse detonation engine is longer, and internal diameter is smaller, and the explosion gas product of HTHP is long and narrow Detonation tube in moved to nozzle, easily produce flow choking, have a strong impact on the normal work of engine.

The various defects existed for current PDE, the utility model provides the pulse-knocking engine that a kind of side is vented, It is mainly characterized by, and is arranged vertically every a segment distance on the tube wall of detonation tube multiple side air bleeding valves, during pinking Side air bleeding valve is closed, and pinking terminates rear side air bleeding valve moment and is opened, and explosion gas product is along the side specially designed Sprayed after exhaust outlet is oblique, produce augmented thrust；Because side exhaust outlet number is more, exhaust velocity is than traditional nozzle exhaust mode High times, so that evacuation time is substantially reduced, to improving the detonation frequency of engine and then improving the thrust of engine It is highly profitable.

The content of the invention

Technical problem to be solved in the utility model is to overcome traditional pulse detonation engine jet pipe exhaust mode The air-flow congestion of presence, the low defect of evacuation time length, detonation frequency there is provided it is a kind of can multiple spot simultaneously be vented side exhaust pulses Detonation engine, can significantly shorten evacuation time, increase substantially detonation frequency, so as to greatly improve motor power.

A kind of pulse-knocking engine of side exhaust, at least by nose cone 1, detonation tube 2, side valve 3, side air bleeding valve 4, master Fuel nozzle 5, detonation fuel nozzle 6 and igniter 7 are constituted；Described detonation tube 2 is pipe closed at both ends, and drive end bearing bracket is flat Plate end cap, plays thrust wall, and rear end cap is hemispherical end cap；Detonation tube 2 is divided into main shot room 201 with rising by one piece of sieve plate 202 Shot room 203；Main shot room 201 is preceding, and blasting chamber 203 is rear；Blasting chamber 203 includes the open pipe 2031 of a tube wall perforate, One mouse cage component 2032 of filling in pipe 2031；Side valve 3 is arranged alternately in detonation tube 2 vertically with side air bleeding valve 4 On tube wall；Main fuel spray nozzle 5 is vertically on the main tube wall of shot room 201；Fuel nozzle 6 detonate loaded on pipe in blasting chamber 203 On 2031 tube wall；When engine works, multiple main fuel spray nozzles 5 spray into atomized fuel into main shot room 201, while playing detonation The igniter 7 that material nozzle 6 is sprayed into blasting chamber 203 in vaporising fuel, blasting chamber 203 is lighted a fire, and ignites combustion gas mixing therein Thing, explode the high temperature and high pressure gas that produce along the hole on sieve plate 202 collect it is laggard become owner of shot room 201, and then ignite main shot room 201 In cloud mixture；On the valve block for acting on side valve 3 and side air bleeding valve 4 when the shock wave of generation is propagated forward first, Side valve 3 and side air bleeding valve 4 are closed, finally impulse force is produced in preceding blind end；When shock wave is produced on preceding Closed End Raw reflection is along the inverse time folded back upon of detonation tube 2, and under reflected shock wave and expanded gas flow impact, side air bleeding valve 4 is opened, explosion product Sprayed after gas is oblique, produce augmented thrust；While explosion gas product in main shot room 201 and blasting chamber 203 is discharged, Pressure is decreased in detonation tube 2, and when overpressure is reduced to a certain extent, side valve 3 is opened, and is managed outer fresh air and is entered Shot room 201 and blasting chamber 203 are become owner of, main fuel spray nozzle 5 is with detonation fuel nozzle 6 again respectively to main shot room 201 and blasting chamber Fuel is sprayed into 203, igniter 7 is lighted a fire again, pulse-knocking engine enters next round detonation cycle.

The inside pipe wall of described main shot room 201 is carved with groove vertically, and the quantity of groove is no less than 3.

Pore size distribution on described sieve plate 202 is on one group of concentric circles, centerline direction and the detonation tube axis in each hole Intersecting, the centerline direction in hole is met at a bit on same circle, the intersection point of the center line in cylindrical upper hole from a distance from sieve plate compared with inner circle The intersection point in upper hole is remote.

At least one intake and exhaust integral valve 2034 is housed at the described proximal cover of blasting chamber 203 on tube wall.

Further, air inlet is opened simultaneously with exhaust outlet during described intake and exhaust 2034 air inlet of integral valve, can be discharged residual The explosion product gas stayed；During pinking, intake and exhaust integral valve 2034 is in the closed position.

Equipped at least with a side valve 3 and a side air bleeding valve 4 on described blasting chamber 203.

Described mouse cage component 2032 is formed by several coaxial cylindrical shape mouse cages with holder combination, is rigid member.

Described side valve 3 is connected with an air intake duct 301 on tube wall；Air intake duct 301 can be supersonic speed air inlet Road, can also be subsonic inlet.

Described side air bleeding valve 4 includes the valve block 402 outside the valve block 401 in two valve blocks, a pipe, a pipe, pipe Interior valve block 401 can swing, so as to turn off or on air bleeding valve.

Described detonation tube 2 can install by-pass air duct 8 additional, and by-pass air duct 8 includes air intake duct 801, ring cavity 801 and jet pipe 803.

It is of the present utility model to be beneficial in that：1, side valve can realize multiple spot air inlet simultaneously, significantly reduce air inlet Time；Side air bleeding valve can realize that multiple spot is vented simultaneously, overcome being jammed for high temperature and high pressure gas product in pipe, the row of significantly reducing The gas time, so as to significantly improve the detonation frequency of engine, greatly improve the thrust of engine；2, blasting chamber filling mouse cage structure Part, dramatically increases the turbulence of air-flow, and its huge surface area provides the focus of enormous amount, while as heat transfer member, showing The temperature of increase air and detonation fuel is write, each contributes to quickly produce detonation；3, the porous sieve plate of particular design can be produced poly- Can effect, formation high-voltage high-speed jet, hence it is evident that strengthen initiating ability；4, the groove on main shot room tube wall can substantially strengthen air With the mixing for the fuel that detonates, sufficient turbulent flow is formed, the detonation in pipe is more easy to stable propagation；5, intake valve and air bleeding valve are opened The shock wave and pressure that closing is to be produced by pinking are carried out automatically, and response is rapid, without special control system and do device, are sent out Motivation operation is relatively reliable, durable；6, detonation tube is simple in construction, includes component seldom, especially in positive detonation wave propagation, no Harmful shock wave refraction or reflection is produced, the loss of thrust is reduced to a minimum.

Brief description of the drawings

Fig. 1 is the section of structure of the utility model side exhaust pulses detonation engine.

Fig. 2 is the profile that Fig. 1 is rotated by 90 °.

Fig. 3 is that the utility model side exhaust detonation engine installs the section of structure after by-pass air duct additional.

Fig. 4 is A-A profiles in Fig. 1.

Fig. 5 is B-B profiles in Fig. 2.

Fig. 6 is C-C profiles in Fig. 2.

Embodiment

The utility model is described in further detail with reference to embodiments.

As shown in Fig. 1 ~ 6, the pulse-knocking engine of side exhaust is mainly made up of following part：Nose cone 1, detonation tube 2, Side valve 3, side air bleeding valve 4, main fuel spray nozzle 5, detonation fuel nozzle 6 and igniter 7, install the engine of by-pass air duct 8 additional also Including air intake duct 801, ring cavity 802 and jet pipe 802；The described two ends of detonation tube 2 are closed, and drive end bearing bracket is flat board end cap, is risen Thrust wall is acted on, and rear end cap is hemispherical end cap, and detonation tube 2 is divided into main shot room 201 and blasting chamber 203 by one piece of sieve plate 202, main Shot room 201 is preceding, and blasting chamber 203 is rear；Groove is carved with the inside pipe wall of main shot room 201, groove is evenly distributed；The number of groove Amount is determined according to the internal diameter size of detonation tube 2, but must not be less than 3, from 16 in this example；Groove can substantially strengthen sky The mixing of gas and main fuel, forms sufficient turbulent flow, the detonation in pipe is more easy to stable propagation；Through hole distribution on sieve plate 202 On one group of concentric circles, the centerline direction of each through hole intersects with the axis of detonation tube, the center line side of through hole on same circle To meeting at a bit, the intersection point of the center line of cylindrical upper through hole is remote from the intersection point with a distance from sieve plate compared with through hole in inner circle, is so set The through hole of meter can collect explosion product for the jet of one of high speed and high pressure, to igniting the cloud fuel in main shot room 201 Mixture is highly beneficial；Blasting chamber 203 includes one mouse cage component of filling in the pipe 2031 of a tube wall perforate, pipe 2031 2032, the component is formed by several coaxial cylindrical shape mouse cages with holder combination, is rigid member, there is huge surface area, can The huge focus of quantity of formation, can acceleration knock generation, pipe 2031 is fixed on blasting chamber 203 by tubular bracket 2033 On tube wall；At least one intake and exhaust integral valve 2034, intake and exhaust integral valve during air inlet are housed at the proximal cover of blasting chamber 203 on tube wall 2034 air inlet is opened simultaneously with exhaust outlet, can exclude the explosion product gas of residual；During pinking, intake and exhaust integral valve 2034 is in the closed position；Side valve 3 and side air bleeding valve 4 are arranged alternately on the tube wall of detonation tube 2 vertically, side valve 3 For check valve, towards opening in pipe and be open towards nose cone during air inlet；In shock wave and the pressure of explosion gas product during pinking It is closed under effect；Each side valve 3 is connected with the air intake duct 301 on a tube wall, the import of air intake duct 301 Supersonic inlet or subsonic inlet can be designed to according to the use requirement of engine；Side air bleeding valve 4 includes two valves The valve block 402 outside valve block 401 and a pipe in piece, a pipe, during air inlet and pinking, side air bleeding valve 4, which is in, closes State, under reflected shock wave and expanded gas flow impact, side air bleeding valve 4 is opened, oblique final vacuum；Main fuel spray nozzle 5 is every one section Distance is arranged on the main tube wall of shot room 201, and detonation fuel nozzle 6 has been installed in detonation chamber 203 on the tube wall of pipe 2031, is risen The delivery pipe of detonation material is passed through out of tubular bracket 2033 pipe；The quantity of main fuel spray nozzle 5 can be according to the length of main shot room 201 And the spray amount under single-nozzle normal pressure is determined, the quantity of the fuel nozzle 6 that detonates is according to the volume and list of blasting chamber 203 The normal injection amount of individual nozzle is determined；Igniter 7 can use the spark plug of conventional low energy, it would however also be possible to employ high energy arc Igniter, the present embodiment is implemented to light a fire simultaneously with 3 igniters 7, and 3 igniters 7 stretch into the mouse cage component of blasting chamber 203 In 2032 and in the same plane vertical with axis.

When pulse-knocking engine is driven, because main shot room 201 and blasting chamber 203 are in cold tubulose state, main fuel temperature Degree is low, and viscosity is big, and spray effect is poor, and the gasification for the fuel that detonates is also more difficult, along with the air in detonation tube 2 is normal pressure, The quick-fried energy and detonation pressure of explosive mixture are relatively low in blasting chamber 203, are not likely to produce stable Detonation Initiation Effect, therefore in the present embodiment, Engine is started by the way of compressed air and quick electric heating gasification detonation fuel；Compressed air valve is first turned on to be allowed to Into blasting chamber 203, main shot room 201 is then filled to, while the detonation fuel gasified with medium-high frequency sensing heater is sprayed into In mouse cage component 2032 in blasting chamber 203, it is allowed to also be diffused into main shot room 201, the igniting blasting blasting chamber 203 of igniter 7 And the explosive gas mixture in main shot room 201, multi-round is so circulated, treats that main shot room 201 is raised with the temperature of blasting chamber 203 After to a certain extent, compressed air supply is disconnected, the power supply of medium-high frequency sensing heater is simultaneously closed off；The tube wall of detonation tube 2 is preheated Main fuel by multiple main fuel spray nozzles 5 to main shot room 201 spray into atomized fuel, with main shot room 201 in air formation cloud Vaporific mixture, while the detonation fuel heated by the tube wall of detonation tube 2 is sprayed into by the fuel nozzle 6 that detonates into blasting chamber 203 Air formation explosive gas mixture in gasification detonation fuel, with blasting chamber 203；Now igniter 7 is lighted a fire, and mixes blast Thing produces blast, and the high temperature and high pressure gas produced that explode become owner of shot room 201 along the cumulative of sieve plate 202 is laggard, and then ignite main shot room Cloud mixture in 201；The shock wave produced that explodes is propagated to nose cone direction, is finally produced on the drive end bearing bracket of detonation tube 2 Thrust forward；It is catadioptric backward along main shot room 201 that shock wave produces back wave on end cap, valve block 401 in the pipe of offside air bleeding valve 4 Impulsive force is produced, side air bleeding valve 4 is opened, and is sprayed after explosion gas product is oblique, produces further thrust；With pinking Explosion gas product discharge in pipe 2, overpressure is reduced rapidly, and when overpressure is outer less than pipe, multiple side valves 3 are beaten Open, manage outer fresh air and respectively enter main shot room 201 and blasting chamber 203 from the import of valve, remaining explosion product and part are fresh Air is discharged from the exhaust outlet of the intake and exhaust integral valve 2034 on blasting chamber 203 together；Main fuel spray nozzle 5 and detonation fuel nozzle 6 spray into main fuel and detonation fuel into main shot room 201 and blasting chamber 203 respectively again, and igniter 7 is lighted a fire again, and pulse is quick-fried Shake engine and carry out next round detonation cycle.

When engine enters normal operating conditions, with the increase of incoming air speed, charge flow rate increases therewith, main combustion Oily straying quatity also accordingly increases, and spark rate can be improved therewith, so as to improve detonation frequency, further improves motor power, Until reaching setting value；The straying quatity of main fuel need in good time be adjusted according to air mass flow, make each time pinking process do as far as possible To zero oxygen balance；Thrust can be adjusted by changing detonation frequency, and frequency of detonating can easily be controlled with spark rate, Frequency is higher, and thrust is bigger, and vice versa.

Described above is only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of this area For member, on the premise of the utility model principle is not departed from, some modifications and adjustment can also be made, these modifications and adaptations It should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of pulse-knocking engine of side exhaust, is at least sprayed by nose cone, detonation tube, side valve, side air bleeding valve, main fuel Mouth, detonation fuel nozzle and igniter composition；It is characterized in that：Detonation tube is pipe closed at both ends, and drive end bearing bracket is flat board end Lid, plays thrust wall, and rear end cap is hemispherical end cap；Detonation tube is divided into main shot room and blasting chamber, main shot room by one piece of sieve plate Preceding, blasting chamber is rear；Blasting chamber includes one mouse cage component of filling in the open pipe of a tube wall perforate, pipe；Side is entered Air valve is arranged alternately on the tube wall of detonation tube vertically with side air bleeding valve；Main fuel spray nozzle is mounted in main shot room tube wall vertically On；Detonate on tube wall of the fuel nozzle loaded on pipe in blasting chamber；When engine works, multiple main fuel spray nozzles are into main shot room Atomized fuel is sprayed into, while the igniter fire that the fuel nozzle that detonates is sprayed into blasting chamber in vaporising fuel, blasting chamber, ignites Fuel gas mixture therein, explode the high temperature and high pressure gas that produce along the hole on sieve plate collect it is laggard become owner of shot room, and then ignite Cloud mixture in main shot room；The valve block of side valve and side air bleeding valve is acted on when the shock wave of generation is propagated forward first On, by side valve and side exhaust valve closure, finally produce impulse force in preceding blind end；When shock wave is produced on preceding Closed End Raw reflection along detonation tube turn back backward when, under reflected shock wave and expanded gas flow impact, side air bleeding valve is opened, explosion product gas Sprayed after body is oblique, produce augmented thrust；While explosion gas product in main shot room and blasting chamber is discharged, in detonation tube Pressure is decreased, when overpressure reduction to a certain extent, side valve is opened, manage outer fresh air into main shot room and Blasting chamber, main fuel spray nozzle sprays into fuel into main shot room and blasting chamber respectively again with detonation fuel nozzle, and igniter is again Igniting, pulse-knocking engine enters next round detonation cycle.

2. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described main shot room Inside pipe wall is carved with groove vertically, and the quantity of groove is no less than 3, is evenly distributed.

3. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：On described sieve plate Pore size distribution is on one group of concentric circles, and the centerline direction in each hole intersects with detonation tube axis, the center line side in hole on same circle To meeting at a bit, the intersection point of the center line in cylindrical upper hole is remote from the intersection point with a distance from sieve plate compared with hole in inner circle.

4. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described blasting chamber is near At least one intake and exhaust integral valve is housed at end cap on tube wall.

5. a kind of pulse-knocking engine of side exhaust according to claim 4, it is characterised in that：Described intake and exhaust one During body valve air inlet, air inlet is opened simultaneously with exhaust outlet, can exclude the explosion product gas of residual；During pinking, intake and exhaust Integral valve is in the closed position.

6. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：On described blasting chamber Equipped at least with a side valve and a side air bleeding valve.

7. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described mouse cage component Formed by several coaxial cylindrical shape mouse cages with holder combination, be rigid member.

8. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described side valve It is connected with an air intake duct on tube wall；Air intake duct is supersonic inlet or subsonic inlet.

9. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described side air bleeding valve Comprising two valve blocks, the valve block in a pipe and the valve block outside a pipe, in pipe valve block can swing, so as to turn off or on Air bleeding valve.

10. a kind of pulse-knocking engine of side exhaust according to claim 1, it is characterised in that：Described detonation tube Outside installs by-pass air duct additional, and by-pass air duct includes air intake duct, ring cavity and jet pipe.