CN1768194A

CN1768194A - Combustion unit for turbocharger

Info

Publication number: CN1768194A
Application number: CNA2004800088981A
Authority: CN
Inventors: 罗兰·布罗德本特
Original assignee: Prodrive 2000 Ltd
Current assignee: Prodrive 2000 Ltd
Priority date: 2003-04-07
Filing date: 2004-04-06
Publication date: 2006-05-03
Also published as: WO2004090305A1; JP2006522274A; GB0308013D0; EP1611329A1

Abstract

A combustion unit (15) is primarily intended to feed a turbocharger (18) to generate a compressed air supply to an internal combustion engine (10). The unit (15) is suppplied with exhaust gasses from the engine and these gases are mixed with air in the unit combust material in the exhaust gases and give and enhanced supply to the turbocharger. The combustion unit is generally cylindrical and air is added to the exhaust gases at the inlet (13) to promote combustion and the combustion gases pass at high speed through an annuler space towards an outlet (17) leading to the turbocharger (18).

Description

The firing unit that is used for turbosupercharger

Technical field

The present invention relates to a kind ofly be used for the firing unit of turbosupercharger (in particular for the turbosupercharger of internal-combustion engine), a kind of internal-combustion engine that comprises this firing unit, and a kind of operating method of internal-combustion engine.

Background technique

Turbo charging installation is generally used for air stream is pushed in the internal-combustion engine, thereby improves the performance of internal-combustion engine.This kind device is usually when the internal-combustion engine slow-speed of revolution and in the throttle settings of internal-combustion engine with turn entirely and can not improve engine performance during changing.

From US 3849988 (etat francais (Etat Francais)), US 3736752 (etat francais), US 4026115 (etat francais), US 4009574 (etat francais) and GB 537483 (Napier (Napier)) learn, a kind of firing chamber with independent supply of fuel is provided.

Summary of the invention

The purpose of this invention is to provide a kind of improved turbo charger unit, it can reduce the so-called turbo lag (turbo lag) of existing apparatus, thus the power output that improves exhaust quality and improve whole motor.

According to an aspect of the present invention, provide a kind of firing unit that is used for internal-combustion engine, this firing unit comprises a firing chamber, and this firing chamber has: inlet allows to enter from the exhaust of internal-combustion engine; Suction port is used to allow air to enter this firing chamber; And outlet, it is communicated with the turbosupercharger with impeller, thus feasible this impeller of gas-powered from described firing chamber the operation setting of this impeller is become Driven Compressor, thereby the air-flow of this internal-combustion engine is passed in generation; Described firing chamber is arranged so that combustible products in the I. C. engine exhaust is in this firing chamber internal combustion, wherein, described firing chamber has the cross section of circular, and is configured to have: the exhaust entrance zone, its cross section increases along downstream direction, and air is introduced in this zone; Middle section, it is positioned at the downstream of described entrance region, at this region generating annular airflow; And exit region, combustion gas are discharged from combustor exit from this zone, thereby drive described impeller.

Preferably, described firing chamber is configured to have the exhaust entrance zone, its cross section increases along downstream direction, central authorities' barrier elements (obstruction member) are positioned at the downstream of described entrance region, be used for producing and enter flowing of annular region, the central elongated element is positioned at the downstream of described central barrier element, and roughly the edge is passed the gas flow direction extension of firing chamber and had venting gas appliance, is used for air is introduced in the described firing chamber.

Described device can comprise a plurality of perimeter rows device of air, thereby air is discharged in the outer periphery of firing chamber.

Described firing chamber can be formed with outer air chamber, and air is configured to from entering the firing chamber from a plurality of openings by outer air chamber.

Preferably, described central member is extended towards outlet end in the exhaust entrance zone from the firing chamber along the firing chamber, and air is in described central member is disposed to combustion space the firing chamber, and extend around described elongated element general toroidal ground this combustion space.

The interior cross section of described firing chamber can be general toroidal, thereby define from the general toroidal zone of exhaust entrance towards the downstream, in this zone, burn, air is introduced in this annular region from radially inside and outside position, and air can pass the wall of firing chamber and be introduced in exhaust entrance zone and the exhaust outlet zone in.

Usually, the air that enters the air stream of firing chamber and flow into internal-combustion engine is from same source.

The present invention also provides a kind of internal-combustion engine, and this internal-combustion engine has: suction port is used for the combustion air of compression is incorporated into this internal-combustion engine; Exhaust outlet from internal-combustion engine; Compressor, it is used to produce the described pressurized air to internal-combustion engine; Be used to drive the compressor drive of this compressor; And firing unit, it provides the air-flow that is used to operate this compressor drive, this firing unit has the exhaust entrance that is communicated with the exhaust outlet of internal-combustion engine, and be used to allow air to enter the air inlet system of firing unit from described compressor, thereby make the exhaust have combustible substance therein and air in this firing unit, mix and burn, one air outlet of this firing unit is communicated with described compressor drive, thereby is used to drive described compressor from the air-flow of this air outlet.

Preferably, this internal-combustion engine comprises: tube equipment, and it is used as the air inlet system of air stream from the compressor oriented combustion chamber; And flow control apparatus, it is used to control the flow velocity of described air flow firing chamber.

In another aspect of this invention, provide a kind of operation to have the method for the internal-combustion engine of turbosupercharger, wherein, to go in the internal-combustion engine from the pressurized air conductance of this turbosupercharger, fuel is imported in the internal-combustion engine, the exhaust that internal combustion engine operation produced is imported in the firing unit, make the combustible products in the exhaust in this firing unit, burn, and the air-flow that this burning produces is directed to turbosupercharger and the compressor with impeller, this turbosupercharger produces charge air flow, the part of this air stream is directed to internal-combustion engine, and part is directed to turbosupercharger.

Preferably, the supply of fuel of described internal-combustion engine is given in control, thereby makes the fuel that arrives internal-combustion engine more than the required fuel of this internal-combustion engine of operation, increases thus from the inflammable matter in the exhaust of internal-combustion engine, and is supplied to internal-combustion engine up to 8% fuel more.

In addition, fuel can be introduced in the exhaust that supply burns in firing unit.

Description of drawings

From following only by way of example and with reference to accompanying drawing to understanding further feature of the present invention the description of the embodiment of the invention, in the accompanying drawings:

Fig. 1 is the schematic representation that includes the internal-combustion engine layout of turbo charger unit;

Fig. 2 is the longitudinal section of firing chamber that passes the layout of Fig. 1;

Fig. 3 is the longitudinal section corresponding to the replaceable form of the firing chamber of Fig. 2;

Fig. 4 is the stereogram of a side of the firing chamber of Fig. 3; And

Fig. 5 to Fig. 7 is the stereogram that some part is omitted in the firing chamber of Fig. 3 and Fig. 4, below with described.

Embodiment

With reference to accompanying drawing, at first with reference to Fig. 1, show internal-combustion engine 10, it can be any suitable form, is four-cylinder gasoline engine in this example, but it also can be diesel engine or other internal-combustion engine.Internal-combustion engine 10 has: intake manifold 11, air are incorporated in the firing chamber of internal-combustion engine 10 by this intake manifold; And gas exhaust manifold 12, be discharged into exhaust outlet 13 by the products of combustion in this gas exhaust manifold collection internal-combustion engine 10 and with it.

Firing chamber 15 is supplied with from the exhaust of internal-combustion engine 10 and from inlet 16 air, and from exporting 17 exhausting air, thereby drive the turbine 23 of turbosupercharger 18.Gas is discharged into outlet pipe 19 from turbine 23, and the air that turbosupercharger 18 extracts by compressor 24 compressions by suction port 20, and pass through high pressure pipe line 21 with its discharge.Air in the pipeline 21 is directed to the intake manifold 11 of internal-combustion engine 10, and in addition, the air of controlled quentity controlled variable enters the inlet pipe 16 of firing chamber from pipeline 21, is entered this air stream of firing chamber 15 by control valve 22 controls.

Usually, internal-combustion engine shown in Figure 1 is with by from the air of manifold 11 be used for being introduced into together at the fuel of the measured quantity of firing chamber internal combustion the traditional approach operation of internal-combustion engine 10.Discharge and enter firing chamber 15 along gas exhaust manifold 12 from the exhaust of combustion chambers of internal combustion engines, products of combustion in this firing chamber 15 with air mixing from pipeline 16.Inflammable matter from gas exhaust manifold burns in firing chamber 15, thereby make high-speed gas discharge from exporting 17, to drive turbosupercharger 18, although for the inflammable matter in the firing chamber 15 of burning effectively, the controlled valve 22 of part air turns to this firing chamber, but the operation of turbosupercharger 18 still makes high-pressure air be introduced in the intake manifold 11.

This internal-combustion engine turns round in such a way,, in the gas exhaust manifold 12 inflammable matter is arranged, and this inflammable matter can burn in firing chamber 15 that is.Wherein be implemented in the mode that has inflammable matter in the firing chamber 15 have multiple, this be because of its depend on the characteristic of internal-combustion engine 10 and need the turbo charging installation supercharging what.In a kind of the setting, can provide excess of fuel to internal-combustion engine, thereby guarantee to have inflammable matter, and this excess of fuel can be for example less than 15%, preferably less than 5% at floss hole.

Also find, from other source inflammable matter is incorporated into the firing chamber 15 more favourable than introducing from gas exhaust manifold, but needn't do so usually.Introduce inflammable matter if desired, then it can and be introduced directly into the inlet 13 of firing chamber with the form of gas or vaporized fuel by the mixer nozzle (not shown).

Can in firing chamber 15, realize high-velocity combustion, this give compressor 18 constant, power source flexibly, and be internal-combustion engine 10 supply high pressure combustion air.

Specifically with reference to Fig. 2, show the firing chamber now.Firing chamber 15 has the cross section of circular, and is introduced in the entry end of this firing chamber 15 along direction A from the exhaust (comprising combustible products) of internal-combustion engine 10.Forced air 16 is introduced in firing chamber 15 from direction B along air inlet duct.

Firing chamber 15 has a plurality of zones, wherein comprises along downstream direction: entrance region X, annular region Y and exit region Z.The section area of entrance region X 13 increases along downstream direction from entering the mouth, and annular region Y be general toroidal and constant cross-section.On exit region Z, the cross section inwardly is tapered towards outlet 17.In this case, inlet 13 is two-tube inlets in illustrated structure.

Firing chamber 15 is double-walleds, thereby limits inwall 25, and this inwall is the combustion zone peripheral wall of (comprising regional X, Y and Z).Firing chamber 15 has outer wall 27, thus this outer wall and the inwall 25 spaced apart spaces 28 that limit, and this space 28 is chambers, guides air this chamber of pile warp before being allowed to enter the firing chamber of burning therein of firing chamber into.

On regional X, opening 30 is formed in the wall 25, thereby allow air to enter the regional X from chamber 28, on the outside tapered regional X1 a plurality of openings 30 are arranged all at the entrance region of regional X and along downstream direction, zone X1 leads to annular region Y, thereby air is mixed with exhaust in regional X.

Boundary between regional X and regional Y is provided with baffle plate or barrier element 32, and it is positioned at central authorities and the prevent surface of facing inlet 13 is provided.Baffle plate 32 is carried on the end of central hollow elongated element 34, and this elongated element 34 is along the longitudinal extension of regional Y, and it innerly is communicated with chamber 28 by inlet 34A, thereby the permission air 34 leads to baffle plate 32 from chamber 28 along elongated element.Elongated element 34 has a plurality of exit openings 35, is used for described air ingress area Y.

Baffle plate 32 is fixed on by arm 36 on the inwall 25 of firing chamber, and these arms are shifted with 120 degree each other about the central authorities of baffle plate 32, thereby its outer end is fixed on the inwall 25.

As can be seen, define an annular space around elongated element 34 in regional Y, the gas that flows through the firing chamber is imported in this space by baffle plate 32.Transition part office between entrance region X and annular region Y is provided with directed suction tude 38, this suction tude be arranged to shown in oriented approach air is imported in this annular space.More air imports to this annular space from directed air outlet 40, and these air outlets are along regional Y and spaced apart about regional Y, and around along the inwall of identical direction guiding area Y.

The downstream of annular region Y is exit region Z, this exit region Z inwardly is tapered towards outlet 17, and be provided with a plurality of being used for air is entered opening 42 in the regional Z, provide these air in firing chamber 15, to finish the burning of inflammable matter, firing chamber 15 is arranged in gas as far as possible by exporting 17 when leaving, and the inflammable matter that enters the firing chamber fully burns.These gases have reached very high speed when leaving firing chamber 15, thereby when guaranteeing that it acts on the turbine 23, this gas is with high-speed driving compressor 24, thereby provide sizable pressurized air output in outlet 21.

During operation, the gas A that enters the firing chamber the X place with from exporting 30 air mixing that enter, thereby inflammable matter is burnt.Then, the gas of introducing and air be by baffle plate 32 directed outwards, and further mix with air from outlet 38, thus the ring vortex burning of in annular region Y, setting up gas and air.The formation of this ring vortex burning and advancing in regional Y obtain the auxiliary of air that outlet 40 from the outer wall of firing chamber and the outlet 35 in the elongated element 34 enter.Eddy current is advanced along regional Y, arrives exit region Z up to it.In this zone, mix more air, thereby cause by exporting the high velocity air of 17 dischargings from outlet 42.

Can supply with extra combustible substance to firing chamber 15 at inlet 13 places or around it, this combustible substance can be inflammable gas or vaporized fuel, and does not rely on the inflammable matter that is present in the exhaust.The delivery temperature that enters firing chamber 15 will be awfully hot (for example, in 1000 ℃ scope), thereby make the combustible substance spontaneous combustion enter the firing chamber, but if desired, also ignition mechanism can be set, for example with the form of spark plug.Because the firing chamber can promote the inflammable matter burning of low density in the gas, do not need extra supply of fuel usually.

Referring now to Fig. 3 to Fig. 7, Fig. 3 to Fig. 7 shows the replaceable form of previous combustion chamber, wherein uses identical reference character to represent identical parts.

Therefore, firing chamber 15 is communicated with exhaust from internal-combustion engine along direction A by inlet 1, and this inlet also is the form of two-tube inlet, but also can use other inlet.Inlet 1 exhaust that will have combustible substance is brought in the firing chamber, at first enter by the air cover around regional X, air is introduced into by exporting 30 from this air cover after 16 entering into inlet along direction B.Zone X expands gradually, the cross section of part thereby the gas of increase and introducing air mixing is advanced.The mixture of air enters among another regional X1 subsequently, and this zone further expands and has an opening 30 that allows air to cover into from air.In the downstream of regional X1, more air enters from suction tude 38, and this suction tude is oriented the side general tangential with the firing chamber, thereby helps gas-air mixture to produce vorticla motion when entering the regional Y in regional X1 downstream.

Zone Y comprises ring-type element 50, and this ring-type element roughly is tubular structure at 51 places but inwardly is tapered to its downstream.The outer wall 52 of pipe member 50 is spaced apart with inwall 51 radially outwards, thereby forms hollow space D, and air is imported into along direction C from the air cover the hollow space D in the element 50.Pipe member 50 has the nose part 53 of guiding, this nose part directed upstream and define a path of leading, thereby can allow gas and air to import along the inboard of pipe member 50 in the axial direction, and air also is directed to the outside of this nose 53, thus the outside of process element 50 in the annular space between wall 52 and wall 25.

Set out gas port 55 along inwall 51, so that enter in the gas and air stream of flowing pipe linear element central authorities from the air of space D.

In the outer wall 52 of pipe member 50, also be provided with air outlet 56, thereby make air radially outward from space D enter into the annular space that between the wall 52 in this zone and wall 25, limits.Therefore, air is added in the gas of the regional Y that flows through, thus with enter this regional gas and mix.This has promoted the further burning of the inflammable matter in this gas.Air along pipe member 50 the central streams gas of crossing and the annular region of flowing through mixes in regional Z, and this zone Z inwardly is tapered towards outlet 17.In regional Z, can allow more air to enter through exporting 42, and outlet 17 the air-flow that obtains of flowing through has very high speed, and make the products of combustion that is included in the initial exhaust supply fully burn from the outer space air-casing.As previously mentioned, 15 gases of discharging have very high speed from the firing chamber, and produce pressurized gas by the operation of turbo charger unit.

Arrange gas and air passage by this way, thereby the layout that can carry out perfect combustion and regional Y is particularly suitable by firing chamber 15.Because pipe member 50 is along the tapered feature of downstream direction, and because the layout of blast nozzle 38, therefore most of gas and the air introduced along annular region through the pipe member outside.When this zone, gas produces vorticla motion, and this vorticla motion is considered to ring vortex, thereby treats that products of combustion is more likely burned through regional Y the time, and purpose is to make that burning was near finishing when this gas entered regional Z.In fact, have been found that the exhaust of using firing chamber 15 can produce cleaning from internal-combustion engine, in this exhaust, it is lower to have reduced harmful products of combustion and combustible products.In some cases, can be omitted in other device that uses in the I. C. engine exhaust, be used to reduce the noxious emission that produces owing to the filter cleaner effulent, for example catalyst converter.

Although in most of the cases, even under the situation of IC engine supply excess of fuel not, described burning structure also can cause burning by most Structures of Internal-Combustion Engine, but internal-combustion engine also can be arranged to have the fuel supply of Duoing slightly than the strict fuel that needs of this internal-combustion engine of running, thereby inflammable matter is provided in exhaust, this exhaust subsequently through firing chamber 15 with auxiliary burning therein.

Also such situation can be arranged, that is, when exhaust enters firing chamber 15 or before entering, combustible substance is added in the exhaust, if especially this internal-combustion engine is a diesel engine.In this case, combustible substance can be with the form of fluid drip or other fuel injection system.

Found to compare with the internal-combustion engine that described chamber structure is not installed, described structure can provide significant power gain, simultaneously can improve the quality of emission product, and the power that is produced by turbo charge system can be provided fast and any significant delay can not arranged in power supply.

It should be understood that at Fig. 4 to Fig. 7 be schematic demonstration, and in Fig. 4, show have shell 27, the firing chamber exterior part of two suction tude 1, suction tude 16 and exhaust structure 17.In Fig. 5, omitted shell 27 to show outer surface 25 and a plurality of opening thereof, air imports from the space between shell 27 and the internal surface 25 by these openings.Fig. 6 shows similar view, but has omitted suction tude and be used for the associated shell of regional X.Fig. 7 shows pipe member 50, and it has nose 53, inner conical pipe 51 and exterior cylindrical pipe 52, is formed with a plurality of exhaust ports 56 in this exterior cylindrical pipe 52.Show pipe member 50 and have tapering part 50A towards discharge end, this tapering part inwardly is tapered towards outlet 17.Pipe member 50 is spaced apart from the wall 25 of firing chamber by supporting element 58 supports.

Can be by a series of pipe air distribution, rather than the air cover is set around the firing chamber, air is assigned to a plurality of outlets by this air cover.

The worm gear that it should be understood that turbosupercharger can adopt traditional form, but will be arranged to be suitable for the inlet temperature from the gas of firing chamber 15, and this temperature may be about 750 ℃.

Firing chamber of the present invention can be applicable to multiple motor, is equipped with turbo charger unit and this turbo charger unit on it traditionally and can be provided for controlling device from the gaseous effluent of motor.This firing unit or turbosupercharger also can be applicable in such layout, that is, wherein the exhaust from motor is not supplied to described firing unit, and this firing unit relies on air and the combustible substance that is fed to inlet 13.In this layout, firing unit still is associated with turbine/compressor, with air-flow or flow to internal-combustion engine or flow to and need supply compressed-air actuated equipment (for example, stove).

In another embodiment, this firing unit can be used for not with situation that turbine/compressor is associated under the discharging of controlling combustion engine.In these were arranged, the exhaust of internal-combustion engine was supplied with firing unit with air supplied.The outlet of this firing unit links to each other with the vent systems of internal-combustion engine.This can guarantee that the catalyst converter in the vent systems more effectively operates, thereby is not needing igniting fast under the electrically heated situation.

Claims

1, a kind of firing unit that is used for internal-combustion engine, this firing unit comprises a firing chamber, this firing chamber has: inlet is used to allow the exhaust from internal-combustion engine to enter; Suction port is used to allow air to enter this firing chamber; And outlet, it is communicated with the turbosupercharger with impeller, thus feasible this impeller of gas-powered from described firing chamber becomes Driven Compressor with the operation setting of this impeller, thereby produces the air stream to internal-combustion engine; Described firing chamber is arranged so that combustible products in the I. C. engine exhaust is in this firing chamber internal combustion, wherein, described firing chamber has the cross section of circular, and is configured to have: the exhaust entrance zone, its cross section increases along downstream direction, and air is introduced in this zone; Middle section, it is positioned at the downstream of described entrance region, at this region generating annular airflow; And exit region, combustion gas are the discharge of the outlet from the firing chamber from this exit region, thereby drives described impeller.

2, firing unit as claimed in claim 1 is characterized in that, described firing unit comprises a plurality of peripheral inlet ports, and air is filled in the described firing chamber in the periphery of firing chamber and along the length of described firing chamber by these suction ports.

3, firing unit as claimed in claim 1 or 2 is characterized in that, the cross section of described firing chamber reduces on described exit region.

4, as each described firing unit in the claim 1,2 or 3, it is characterized in that, described firing chamber is formed with the outer air chamber of annular, be introduced in this air chamber from the air of turbosupercharger, and described air is configured to enter the firing chamber from a plurality of inlets from this air chamber.

5, as each described firing unit in the above-mentioned claim, it is characterized in that, on described middle section, be provided with annular region, and the device that is used for the circulation form air-flow outwards being guided to described annular region.

6, as claim 4 or 5 described firing units, it is characterized in that, the air stream that enters described middle section be arranged to auxiliary flow through the gas of firing chamber to enter in the described annular region, described suction port is oriented to the wall general tangential with described firing chamber.

As claim 5 or 6 described firing units, it is characterized in that 7, air is introduced in the described firing chamber along the radially inner side of outside direction in described annular region.

8, as each described firing unit in the claim 4 to 7, it is characterized in that, the place is provided with a pipe member at described middle section, described annular region is arranged in around this pipe member, the Inner Dimension of this pipe member reduces along downstream direction, and this pipe member defines a passage, and air is introduced the described annular region from this passage, and this pipe member defines and is used to produce air-flow to enter the device of described annular region.

9, as each described firing unit in the above-mentioned claim, it is characterized in that the cross section of described firing chamber is reduced towards described outlet, and air is introduced in the described exit region to finish combustion process.

10, a kind of internal-combustion engine, this internal-combustion engine has: suction port is used for the combustion air of compression is incorporated into this internal-combustion engine; Exhaust outlet from internal-combustion engine; Compressor, it is used to produce the described pressurized air to internal-combustion engine; Compressor drive is used to drive described compressor; And firing unit, it provides the air-flow that is used to operate described compressor drive, this firing unit has the exhaust entrance that is communicated with the exhaust outlet of internal-combustion engine, and be used to allow air to enter the air inlet system of firing unit from described compressor, thereby make the exhaust have combustible substance therein and air in this firing unit, mix and burn, one air outlet of this firing unit is communicated with compressor drive, thereby is used to drive described compressor from the air-flow of this air outlet.

11, internal-combustion engine as claimed in claim 10 is characterized in that, described firing unit is according to each described firing unit in the claim 1 to 9.

12, a kind of operation has the method for the internal-combustion engine of turbosupercharger, wherein, to go in the internal-combustion engine from the pressurized air conductance of this turbosupercharger, fuel is imported in the internal-combustion engine, the exhaust that internal combustion engine operation produced is imported in the firing unit, wherein can make the combustible products in the exhaust in this firing unit, burn, and the air-flow that this burning produces is directed to turbosupercharger and the compressor with impeller, this turbosupercharger produces charge air flow, the part of this air stream is directed to internal-combustion engine, and part is directed to turbosupercharger.

13, method as claimed in claim 12 is characterized in that, the supply of fuel of described internal-combustion engine is given in control, thereby makes the fuel that arrives internal-combustion engine more than the required fuel of this internal-combustion engine of operation, increases thus from the combustible substance in the exhaust of internal-combustion engine.

As claim 12 or 13 described methods, it is characterized in that 14, the fuel that surpasses up to 8% is supplied to internal-combustion engine.

As each described method in the claim 12 to 14, it is characterized in that 15, fuel is introduced in the exhaust that is supplied to described firing chamber, to assist the burning in described firing unit.

16, as each described method in the claim 12 to 15, it is characterized in that described firing unit is the type that each limited in claim 1 to 9.

As each described method in the claim 12 to 16, it is characterized in that 17, described internal-combustion engine is diesel engine, four-stroke or two stroke gasoline engine.

As each described method in the claim 12 to 17, it is characterized in that 18, described internal-combustion engine is an internal-combustion engine according to claim 10.

19, a kind of firing unit, it comprises a firing chamber, this firing chamber has: inlet, the gas that allows to contain combustible substance enters; Suction port is used to allow air to enter described firing chamber; And outlet, it is communicated with the turbosupercharger with impeller, thereby makes this impeller of gas-powered from described firing chamber, produces air stream thereby the operation of impeller is configured to Driven Compressor; Described firing chamber is arranged so that described combustible substance in this firing chamber internal combustion, and wherein, described firing chamber has the cross section of circular, and is configured to have: the air inlet zone, and its cross section increases along downstream direction, and air is introduced in this zone; Middle section, it is positioned at the downstream in described air inlet zone, at this region generating annular air stream; And exit region, combustion gas are discharged from described combustor exit from this zone, thereby drive described impeller.

20, firing unit as claimed in claim 19 is characterized in that, described firing unit is according to each described firing unit in the claim 1 to 9.

21, a kind of firing unit that is used for internal-combustion engine, this firing unit comprises a firing chamber, this firing chamber has: inlet allows to enter from the exhaust of internal-combustion engine; Suction port is used to allow air to enter described firing chamber; And outlet; This firing chamber is configured such that combustible products in the I. C. engine exhaust is in this firing chamber internal combustion, wherein, described firing chamber has the cross section of circular, and is configured to have: the air inlet zone, its cross section increases along downstream direction, and air is introduced in this zone; Middle section, it is positioned at the downstream in described air inlet zone, at this region generating annular air stream; And exit region, combustion gas are discharged from described combustor exit from this zone.

22, firing unit as claimed in claim 21 is characterized in that, described firing unit is according to each described firing unit in the claim 1 to 9.

23, a kind of firing unit, it comprises a firing chamber, this firing chamber has: inlet, the gas that allows to contain combustible substance enters; Suction port is used to allow air to enter described firing chamber; And outlet; This firing chamber is configured such that combustible substance in this firing chamber internal combustion, and wherein, described firing chamber has the cross section of circular, and is configured to have: the air inlet zone, and its cross section increases along downstream direction, and air is introduced in this zone; Middle section, it is positioned at the downstream in described air inlet zone, at this region generating annular airflow; And exit region, combustion gas are discharged from described combustor exit from this zone.

24, firing unit as claimed in claim 23 is characterized in that, described firing unit is according to each described firing unit in the claim 1 to 9.