KR20090082487A - Method for supplying an engine with exhaust gas, exhaust element, exhaust line and vehicle comprising means for supplying such an engine with exhaust gas - Google Patents

Abstract

The invention relates to a method for supplying gas to a combustion engine (2) that a vehicle comprises and which is connected to an exhaust line (1) comprising at least one exhaust element (3) including a pollution-reducing element (5, 5'), characterized in that it consists in that at least some of the exhaust gas is collected at and/or downstream of the pollution-reducing element (5, 5') and in that the engine (2) is supplied with the collected and reduced-pollution exhaust gases. This invention also relates to an exhaust element (3) comprising means (9) for supplying an engine (2) with exhaust gases which are defined by a means (10) for collecting exhaust gases at a pollution-reducing element (5, 5') and by a means (11) of conveying the collected gases to the engine (2). The invention further relates to an exhaust line (1) and to a vehicle with a combustion engine (2) comprising means (9) for supplying the engine (2) with exhaust gases.

Description

TECHNICAL FOR SUPPLYING AN ENGINE WITH EXHAUST GAS, EXHAUST ELEMENT, EXHAUST LINE AND VEHICLE COMPRISING MEANS FOR SUPPLYING SUCH AN ENGINE WITH EXHAUST GAS}

The present invention relates to a method for supplying power by exhaust gas to a combustion engine included in an automobile. The invention also relates to an exhaust element comprising means for powering the engine using exhaust gas, and also to an exhaust line and finally to a motor vehicle comprising such power supply means.

TECHNICAL FIELD The present invention relates to the automotive industry, and more particularly to the field of equipment for facilitating the emission of gases generated during combustion of fuel inside an internal combustion combustion engine.

Such combustion engines require the supply of fuel and flammable materials, in particular flammable materials consisting of oxygen, for their function. Oxygen is generally derived from atmospheric air entering the engine, in particular atmospheric air entering after mixing with the fuel.

According to one functional method, the air (diesel engine) or the air-fuel mixture (petrol engine) is compressed before the air enters the engine, thereby improving the engine power. Such compression methods typically include turbines on the one hand that are rotationally interlocked through the exhaust gases from the engine, and on the other hand are interlocked through the turbine and draw atmospheric air or air-fuel mixtures into the engine. It is realized using a turbocompressor comprising a compression device which serves to compress before.

In this respect, the combustion of the fuel is optimal when oxygen and the fuel exhibit a stoichiometric distribution.

However, it does not always represent the optimal state. Normally (particularly in the case of diesel engines) the engine operates with excess air volume. That is, it works with oxygen, which produces exhaust gases that contain significant NOx during fuel combustion. Nitrogen oxides (NOx) are considered to be contaminants to be removed in order to discharge the non-polluted exhaust gases (with nitrogen oxides removed) into the atmosphere. Removal of nitrogen oxides is typically realized through exhaust elements composed of catalytic converters included in the exhaust lines of automobiles.

One solution to improving automotive performance with the aim of reducing air pollution is to dramatically reduce the amount of nitrogen oxides produced by the combustion of fuel inside the engine.

This solution is a method of ensuring exhaust gas recirculation (called EGR), which is to collect a portion of the exhaust gas with a very low oxygen content and then to dilute the oxygen-fuel mixture that powers the engine. A portion of the exhaust gas whose oxygen amount is reduced is returned to the intake collector (for example, an intake manifold). This reduces the amount of oxygen used to ensure combustion of the fuel, resulting in reduced emissions of nitrogen oxides.

Typically the exhaust gas is collected at the engine's outlet and exhaust collector (eg, exhaust manifold) and then reintroduced into the engine through the intake collector. Between the collectors is arranged an EGR valve which serves to regulate the amount of recycled exhaust gas and to ensure the passage of the exhaust gas in a circulating manner, in particular in some engine operating states (especially intermediate operating states).

In fact, these recycled exhaust gases contain nitrogen oxides and soot (particularly in the case of diesel engines) that appear in particulate form. These particles can gradually block the EGR valve and, if so severe, can close the valve even if the EGR valve is in the open position. This further activates the intake of exhaust gas into the engine, where combustion of the fuel is accompanied by excessively recycled recycled exhaust gas, resulting in incomplete combustion of the fuel caused by the lack of oxygen. Incomplete combustion of the fuel results in an increase in the amount of soot, carbon monoxide and hydrocarbons, which can damage the pollution prevention elements which are included in the exhaust line, especially the exhaust line and composed of oxidizers.

If such a problem is detected by the flow meter, the engine function control means operates the wander meter in an abnormal state, as a result of which the driver becomes aware of the problem through visual or auditory warning signals and / or degradation of engine performance.

Another problem is that the recycled exhaust gas is still hot at the collector outlet, which can damage the EGR valve in the face of high thermal resistance.

Hot gases can also enter the engine, reducing engine output and performance. In fact, such a reduction in output is as sensitive as the temperature of the gas rises, and is also a problem for the recycled hot exhaust gas itself.

This problem is already known in the field of compressing atmospheric air using a turbocompressor having the effect of raising the temperature of the atmospheric air. In order to compensate for this problem, a method of supplementing a circuit through a heat exchanger (eg, an intercooler) is already known.

The recirculation of the exhaust gas requires the application of a heat exchanger at an exhaust gas temperature higher than the ambient air temperature, which is particularly difficult to realize due to cost, space and energy consumption.

Another solution would be to develop a heat exchanger specially adapted for the recycling of exhaust gases. This requires, on the one hand, the addition of a new element around the engine that already has no more space, and on the other hand, has proved a difficult solution to realize due to cost and energy consumption problems.

The present invention seeks to solve the problems of the devices according to the prior art described above.

To this end, the present invention provides a method for powering an engine with gas, wherein the engine is included in an automobile, and the engine is connected to an exhaust line including exhaust elements such as pollution prevention elements. A method of powering a furnace is proposed, which collects a portion of the exhaust gas at the pollution prevention level (especially at the outlet) and / or downstream of the pollution prevention element and with the collected non-polluted exhaust gas. It is characterized by supplying power to the engine.

According to the method, the gas must be cooled before powering the engine with the collected exhaust gas.

Another feature is to remove the particles from the exhaust gas by trapping the particles contained in the exhaust gas in the particle catcher before powering the engine with the collected exhaust gas.

In this way, the process valves included in the exhaust line, in particular downstream of the exhaust gas collection point, allow the exhaust gas to circulate in the engine direction. This circulation is effected under the effect of depression produced by the turbocompressor connected to the collection point.

The invention also proposes an exhaust element for a gas exhaust line of an automobile comprising a combustion engine, including means for powering the engine using exhaust gas, the means for supplying power being on the one hand a pollution prevention element. It characterized in that it comprises a means for collecting the exhaust gas at the exhaust element level consisting of, on the other hand transport means for sending the collected exhaust gas to the engine.

According to one embodiment, the means for collecting the exhaust gases consists of perforations formed at the exhaust element level, while the means for transporting the exhaust gases consists of pipes.

According to another embodiment, the antifouling element is in the form of a housing, which comprises means for closing the housing which, at its outlet level, constitutes a means for collecting the exhaust gas.

In this case, the closing means comprises means on the one hand for connecting to an exhaust pipe for discharging part of the exhaust gas and on the other hand means for connecting to a conveying means for sending the remaining part of the exhaust gas to the engine. do.

According to yet another embodiment, the closing means comprises on the one hand a means for connecting to an exhaust pipe for discharging a portion of the exhaust gas, and on the other hand it partially constitutes the collecting means for collecting the remaining portion of the exhaust gas. It includes an opening.

In addition, the exhaust element, on the one hand, is arranged above the opening and above the closing means, and on the other hand comprises a cover which is connected to the closing means, which covers the rest of the exhaust gas used to power the engine. Partially construct the collecting means for collecting.

In this embodiment, the exhaust element comprises an encapsulation which is arranged on top of a portion of the housing of the exhaust element and connected to the portion, the enclosing portion together with the portion of the housing partly constituting the conveying means of the exhaust gas. Define the conduit.

In yet another embodiment, the exhaust element takes the form of a housing having two compartments separated therein into one diaphragm, one of which contains an antifouling means, the other of which Partly constitutes a conveying means for sending exhaust gas in the direction of the engine.

In another embodiment, the antifouling element not only comprises a conduit constituting the housing and the exhaust gas conveying means, but on the one hand the conduit is connected to the housing and on the other hand the outlet of the exhaust element. On the other hand, it has one hole which constitutes at least partly the collecting means of exhaust gas.

In yet another embodiment, the exhaust element includes therein anti-contamination means, the ends of which constitute passages or constitute passage means for sending exhaust gases towards the engine.

Another feature of this exhaust element is that it includes means for cooling the exhaust gas collected and sent to the engine.

Another additional feature is that the exhaust element includes means for removing some of the particles contained in the exhaust gas from the exhaust gas collected.

Finally, the exhaust gas conveying means of the exhaust element is partly in the form of a conduit, the form and / or section of the conduit being arranged in particular to surround the exhaust element so that the conduit can be fitted to the peripheral device of the exhaust element. It is limited to be installed in accordance with the cocoon frame of a car.

The invention also proposes an exhaust line for an automobile comprising a combustion engine, comprising an exhaust element, and comprising means for powering the engine using exhaust gas, the means for supplying power to the engine On the one hand it comprises a collecting means for collecting the exhaust gas at the exhaust element level consisting of the pollution prevention element, on the other hand it characterized in that it comprises a transport means for sending the collected exhaust gas to the engine.

In one embodiment, the exhaust line comprises means for collecting exhaust gases at the level of exhaust elements of the type described above.

The exhaust line comprises collecting means in the form of perforations formed on the downstream side of the exhaust element for collecting the exhaust gases, the exhaust gas conveying means consisting of a conduit of cylindrical or similar form.

The invention finally proposes a motor vehicle equipped with a combustion engine connected to an exhaust line comprising exhaust elements on the one hand and powered by exhaust gas on the other hand via a power supply means, said engine Means for powering the gas on the one hand comprises collecting means for collecting the exhaust gas at the level of the exhaust element, which is composed of anti-pollution elements, and on the other hand, a conveying means for sending the collected exhaust gas towards the engine. It is characterized by that.

In one embodiment, the means for transporting the collected exhaust gases is partly defined at the level of peripheral elements of the exhaust line, in particular coupled to the peripheral element.

The peripheral device element is composed of a protective element, a maintenance element, a structural element, etc. of a motor vehicle.

As an advantage of the present invention, the engine is powered by an exhaust gas from which contaminants have been previously removed through a pollution prevention element, thereby preventing deterioration of the power supply means (via exhaust gas) of the engine and turbocompressor. In addition, the best fuel combustion can be achieved to reduce the amount of particles generated by the engine powered by the recycled exhaust gas.

As another advantage of the present invention, the exhaust gas is cooled before it reaches the engine, which results in no harm to the engine's performance.

The fact that it is possible to remove particles from the exhaust gases caused by the deterioration of the pollution prevention elements (especially under the direct effects of the exhaust gases, the thermal effects of the gases, heat or other physical or other impact effects) is that turbocompressors and even The deterioration of the engine and / or power supply also provides the advantage that it can be prevented.

Still other objects and advantages of the invention will be apparent from the embodiments described below as a non-limiting example.

1 is a diagrammatic representation of an engine connected to an exhaust line and coupled to an exhaust gas power supply means;

2 is a perspective view of an exhaust element comprising power supply means according to a first embodiment of the invention,

3 is a partial perspective view of an exhaust element comprising power supply means according to a second embodiment of the invention,

4 is a cross-sectional view of an exhaust element including power supply means according to a third embodiment of the invention,

FIG. 5 is a radial cross-sectional view of the exhaust element shown in FIG. 4;

6 is a perspective view of an exhaust element including power supply means according to a fourth embodiment of the invention,

7 is a cross-sectional view of the exhaust element shown in FIG. 6,

8 is a perspective view of an exhaust element including power supply means according to a fifth embodiment of the invention,

9 is a cross sectional view of the exhaust element shown in FIG. 8;

10 is a perspective view of an exhaust element including power supply means according to a sixth embodiment of the invention,

11 is a cross-sectional view of the exhaust element shown in FIG.

12 is a perspective view of an exhaust line including power supply means according to a sixth embodiment of the present invention.

The present invention relates to the automotive industry, in particular to the field of equipment capable of reliably exhausting the gas generated during combustion of fuel in an internal combustion engine type combustion engine included in an automobile.

Such exhaust equipment is shown in FIG. 1, which typically has the form of an exhaust line 1 which is connected to the combustion engine 2 and consists of a plurality of exhaust elements 3.

As is already known, the exhaust elements 3 included in this exhaust line 1 consist in part of a collector 4 and pollution prevention elements 5, 5 ′ connected to the engine 2.

The antifouling element 5 may be of chemical and / or physical type.

In practice, the antifouling element 5 may be of a chemical type and is configured to remove contaminants by a chemical method. As is already known, this chemical type of antifouling element 5 may in particular consist of a catalyst 6 capable of removing nitrogen oxides (NOx).

However, the antifouling element 5 may be of a physical type and is configured to remove contaminants in a physical manner. According to a known room, this physical type of pollution prevention element 5 is composed of a particle filter (FAP) 7 which can remove particles contained in the exhaust gas, especially soot generated during combustion of diesel fuel. Can be.

The antifouling element 5 may consist of a physical and chemical system at the same time, in particular a particle catalyst-filter (commonly called cata-FAP) or a similar system.

The pollution prevention element 5 'may be composed of an element 5' capable of preventing auditory noise caused by the generation and circulation of exhaust gas in the exhaust line 1. In this case, the contamination prevention element 5 'may be composed of a muffler or the like.

This exhaust element 5 ′ for noise prevention purposes is typically located at the level of the exhaust line 1 downstream of the chemical and / or physical pollution prevention element 5. The reason for this position is to allow the exhaust gas to pass into the exhaust line 1.

As an additional feature, the exhaust line 1 may comprise a turbocompressor 8 which lies between the collector 4 and the antifouling elements 5, 5 ′.

As is already known, this turbocompressor 8 on the one hand comprises a turbine which lies on the circulation path of the exhaust gas generated by the engine 2 and which is rotationally linked due to the passage of this gas, on the other hand It is interlocked by the turbine and includes a compression device capable of compressing the exhaust gas or the mixture of exhaust gas + fuel before entering the engine 2.

From the point of view of the engine 2 functioning under the exhaust gas recirculation principle (EGR principle) according to the invention, the compressor can compress the exhaust gas or the mixture of exhaust gas + fuel before entering the engine 2. It is configured to be.

For this purpose, the motor vehicle equipped with the engine 2 includes means 9 configured to power the engine 2 by using a part of the exhaust gas generated during fuel combustion inside the engine 2. .

According to the invention, this power supply means 9 comprises, on the one hand, a collecting means 10 for collecting the exhaust gases at the level of the exhaust element 3 consisting of pollution prevention elements 5, 5 ′. This is in order to match the circulation direction of the exhaust gas in the exhaust line 1.

The power supply means 9 on the other hand is a turbo compression which ensures compression of the collected exhaust gas towards the engine 2, in particular (and primarily) the exhaust gas before it enters the engine 2. A conveying means 11 which is directed towards the device 8.

In this case, power supply to the engine 2 using exhaust gas can be realized through various systems to be described below.

According to a first system suitable for the invention, in particular the exhaust element 3 comprises a part of means 9 for powering the engine 2 with exhaust gas.

The power supply means 9 then comprises a collecting means 10 for collecting the exhaust gas at the level of the exhaust element 3 consisting of the pollution prevention elements 5, 5 ′.

According to one preferred embodiment of the invention, the collection of exhaust gases is preferably carried out at the outlet level of the exhaust element 3.

2 shows a first embodiment of the present invention. The collecting means 10 for collecting the exhaust gases here consist of perforations 12 formed at the level of the exhaust element 3, while the conveying means 11 consist of conduits 13 or the like.

The form and / or section of the conduit 13 is a cocoon frame of a vehicle arranged to surround the exhaust element 3, in particular to allow the conduit 13 to be fitted to the peripheral device of the exhaust element 3. Limited to fit in

The perforations 12 are at the level of the opening formed in the exhaust element 3, near the outlet of the exhaust element 3, which is a particularly preferred point, the end of the pipe 13 which constitutes the conveying means 11. It can be configured through the connection of). This is in order to match the circulation direction of the exhaust gas in the exhaust line 1.

One or more of the openings preferably lie at the level of the side wall of the housing 14, which comprises anti-pollution means 30 and partially constitutes the exhaust element 3.

In this case, the exhaust element 3 is partly composed of a housing 14, which may comprise a closing means 15, which is typically configured to ensure the closing of the housing 14. This is to match the circulation direction of the exhaust gas inside the housing 14 at the outlet level of the exhaust element.

According to an additional feature of the invention, as can be seen in the embodiments shown in FIGS. 3 to 5, the closing means 15 may partially constitute the exhaust singer collecting means 10.

More specifically and as shown in the figures, the closing means 15 can close the housing 14, partly in the form of a pipe, formed in particular by a technique known as roll-setting or by two separate ring assembly methods. It is configured to be.

According to the embodiment shown in FIG. 3, the closing means 15 on the one hand connects itself to an exhaust pipe 17 which exhausts a part of the exhaust gas into the atmosphere (as well as towards the noise suppression element 5 ′). Means 16, and on the other hand, a connecting means 18 which connects itself to a conveying means 11 which directs the remainder of the exhaust gas towards the engine 2.

The closing means 15 preferably have the form of a stopper 19 configured to close the housing 14, on the one hand (especially on the upstream side of the stopper 19) to the discharge pipe 17 at the closing means level. The connecting means 16 are limited, on the other hand the side ridge 20 comprising the connecting means 18 to the conveying means 11 (especially at the bottom level which the stopper 19 comprises). do.

In one particular embodiment, the closure means 15 in the form of a stopper 19 may be formed through a mold operation using an iron plate. This manufacturing method allows on the one hand the confinement of the connecting means 16 to the outlet pipe 17 on top of the stopper 19, and on the other hand the conveying means at the bottom level which the stopper 19 comprises ( It is possible to define the connecting means 18 (particularly the side ridges 20) to 11.

As described above, the closing means 15 can be configured to receive the conveying means 11 of the exhaust gas, which is preferably installed symmetrically with respect to the plane passing through the axis in which the exhaust element 3 extends. To this end, the conveying means 11 of the exhaust gas can have the form of a pipe 21, the form and / or section of which is triangular, square, rectangular, trapezoidal, circular, oval, polygonal, etc. It is constrained so that it is possible to install 21 in accordance with the peripheral device of the exhaust element 3, in particular in the cocoon frame of the vehicle, which is arranged to surround the exhaust element and the exhaust line 1.

According to another feature of the invention, the conveying means 11 for exhaust gas in the form of a pipe 21 has a considerable heat exchange surface with the environmental situation of the exhaust element 3 and the pipe 21. This embodiment allows for significant heat exchange between the internal and external environment of the pipe 21, in particular atmospheric air, with the advantage that the temperature of the exhaust gas powering the engine 2 can be reduced. do.

4 and 5, yet another embodiment of the closing means 15 of the housing 14 is shown, which may be formed by conventional roll-setting techniques or two separation ring assembly methods.

This closing means 15 comprises on the one hand a connecting means 16 which connects itself to an exhaust pipe 17 which exhausts a part of the exhaust gas towards the atmosphere (as well as towards the noise suppression element 5 '), and the other On the one hand it comprises an opening 22 which at least partly comprises a collecting means 10 for collecting another part of the exhaust gas used to power the engine 2.

For this purpose, the closing means 15 can be composed of a stopper 19 which closes the housing 14. This stopper 19 preferably has a prefabricated shape so as to close the housing 14 in a conventional manner. The stopper 19 only needs a space in which the opening 22 for the passage of exhaust gas can be placed.

As shown in FIG. 4, the exhaust element 3 is arranged on the one hand upstream of the opening 22 and the closing means 15, and on the other hand is connected to the closing means 15, in particular an example. Cover 23) to be waterproof, for example by welding.

The cover 23 constitutes at least partly a collecting means 10 for collecting another part of the exhaust gas used to power the engine 2.

In this case, the collecting means 10 is composed of a cover 23 and an opening 22.

As shown in FIGS. 4 and 5, the exhaust element 3 comprises an enclosing portion 24 which is disposed (preferably arranged end) on top of a portion of the housing 14 of the exhaust element 3. The method of installing the encapsulation 24 is a method that does not interfere with the peripheral device of the exhaust element 3, and is preferably formed above, side and / or below the exhaust element 3. This enclosing portion 24 is connected to said portion of the housing 14 (especially in a waterproof manner by welding) and at least partially constitutes a conveying means 11 for sending exhaust gas towards the engine 2. Define 25 together with said portion of housing 14. The enclosing part 24 may extend through the pipe or may be connected to a pipe which at least partly constitutes the conveying means 11.

According to another feature, the lid 23 and the enclosing portion 24 are connected to each other and are also defined at the same part level, which is formed through the mold work of the iron plate, in particular shown in FIG. 4. These parts can be connected (particularly by welding) above the housing 14 of the exhaust element 3 and can constitute a kind of double surface.

In FIG. 5, the enclosure 24 extends by a substantial portion above the housing 14, which has a substantial heat exchange surface with the periphery of the exhaust element 3. This embodiment allows for significant heat exchange between the internal and external environment of the conduit 25, in particular the atmosphere, as a result of which the temperature of the exhaust gas powering the engine 2 can be reduced. In addition, the conduit 25 is at the level (or at its periphery) of the side wall section 26, in particular in the interior of the exhaust element 3, in particular the housing 14 of the exhaust element 3 with the conduit 25. Between the anti-contamination means 30 and the side wall section 26 that the housing 14 receives therein, it is possible to insulate the inner region of the exhaust element 3 by installing insulation means.

6 and 7 show an embodiment of the exhaust element 3 in the form of a housing 14 having therein two compartments 27, 28 extending longitudinally along the direction of passage of the exhaust gas. It is. The compartments 27 and 28 are preferably adjacent to each other and can be separated into one septum 29 which allows the two compartments to be separated from each other while having waterproof properties.

One of the compartments 27 accommodates the antifouling means 30, while the other of the compartments 28 constitutes at least partly a conveying means 11 for sending exhaust gases towards the engine 2. .

The compartment 28 constituting the exhaust gas conveying means 11 has a substantial heat exchange surface with the surrounding environment for significant heat exchange between its internal and external environments, and as a result the exhaust powering the engine 2. It is possible to reduce the temperature of the gas. This compartment 28 is also provided in the other compartment 27, in particular at the level of the diaphragm 29 shared by the two compartments 27, 28 (or at its periphery) by means of thermal insulation means. It may be insulated with the compartment 27.

As shown in FIG. 7, the compartments 27, 28 communicate with the outlet 31 of the exhaust element 3. In this case, the exhaust gas collecting means 10 is composed of an inlet 32 of a compartment 28 which partially defines a conveying means 11 for sending exhaust gas toward the engine 2.

The compartment 28 can extend through the pipe or be connected to a pipe constituting another part of the conveying means 11.

According to another feature of this embodiment, the exhaust element 3 is preferably formed by two separate ring assembly methods. One of which defines a first part of the antifouling compartment 27, the other part of the second part of the antifouling compartment 27 and at least a part of the compartment 28 of the exhaust gas conveying means 11 ( Defines the whole).

8 and 9 show, on the one hand, an enclosing portion 41 which receives the pollution prevention means 30 of the exhaust gas therein, and on the other hand an encapsulating portion 41 of the housing 14 at its outlet 31. Exhaust element 3 is shown in the form of a housing 14 comprising a closing means 15 closing.

This exhaust element 3 comprises an exhaust gas conveying means 11 consisting of a conduit 42 having an end 43, at which end the conduit 42 is connected to the housing 14 of the exhaust element 3. In particular connected to the enclosure 41, the conduit 42 extends away from the housing 14, starting from the exhaust element 3.

According to another feature, the end 43 of the conduit 42 and the antifouling means 30 lead to the outlet 31 of the exhaust element 3. The conduit 42 then has an inlet 44 which at least partially constitutes the exhaust gas collection means 10 at the level of the end 43.

According to another feature, the end 43 of the conduit 42 has an enclosing portion 41 (especially cylindrical) of the housing 14 on which the end 43 is connected at its top by means of welding, braze welding or similar. ) Almost parallel to it.

As shown in FIGS. 8 and 9, the end 43 of the conduit 42 is connected above the enclosure 41 of the housing 14, in particular above the lower end section of the enclosure 41. At 45 levels are firmly coupled and fixed.

The end 43 of the conduit 42 then provides a supplemental form in the form of a housing 14, in particular a supplemental form of the housing 14 encapsulation 41, at the level of the engaging region 45 of the housing 14.

As described above, the housing 14 comprises closing means 15 for closing the enclosure 41 at the level of the outlet 31 of the exhaust element 3 of the type described above.

As shown in FIGS. 8 and 9, the closing means 15 comprises a receiving means 46 for receiving the end 43 of the conduit 42 described above. This receiving means 46 has a cradle-shaped pedestal shape on the one hand with the end 43 of the conduit 42 located therein and on the other hand taking a supplemental form in the form of an end 43.

As an additional feature of this embodiment, the closing means 15 is connected with the end 43 of the conduit 42, in particular by means of welding, braze welding or similar joining methods.

According to the feature shown in FIG. 9, the conduit 42 is at least partly at the level of its end 43, on the one hand, connected to the encapsulation 41, on the exhaust element having a supplemental form of the encapsulation 41. (3) a first end section 47 located above the enclosing part 41 of the housing 14, on the other hand, in connection with the first end section 47, the section 47 and the closing means 15. ) And a second end section 48 having a supplemental form of closing means 15.

According to the preferred embodiment shown in FIGS. 8 and 9, the conduit 42 is fitted on the one hand with the end 49 and on the other hand with a pipe fitted and / or welded to the end 49. 50).

The end 43 of the conduit 42 (described above above) is then defined at the end 49 level, in particular at the end level of the end 49.

As shown in the two figures, the end 49 consists of a first end section 47 on the one hand and a second end section 48 on the other hand, with two end sections 47, 48 has the features described above.

As described above, the end 43 of the conduit 42 is fixedly connected with the enclosure 41 of the housing 14 and the closing means 15 of the housing 14.

The coupling between the end 43 of the conduit 42 and the enclosing portion 41 of the housing 14, on the one hand, is the periphery of the enclosing portion 41 where the end 43 of the conduit 42 is connected to its upper part. Of the end 43 of the conduit 42 (especially at the level of the first end section 47 of the end 43 of the conduit 42) and of the housing 14 so that it can be made at a portion on the section (better than the entire encapsulation). It is done at the level of the conduit 42 end 43 via the welding line 51 lying between the encapsulation 41, and on the other hand, the encapsulation to which the end 43 of the conduit 42 is connected at its upper part. The end 43 of the conduit 42 (particularly the level of the first end section 47 of the end 43 of the conduit 42) and so that it can be made in a portion (better the entire part of the enclosure) on the end section of the 41; It is done at the level of the terminal edge 52 of the end 43 of the conduit 42 via the welding line 51 which lies between the enclosing portions 41 of the housing 14.

The presence of the twisted weld seam 51 ensures excellent waterproofing of the exhaust element 3.

As a further feature of the conduit 42 constituting the conveying means 11, the conduit can be fitted with a cocoon frame of the type described above, so that the conduit 42 can be fitted to the peripheral device of the exhaust element 3. And shaped sections and / or sections (triangles, squares, rectangles, trapezoids, circles, ovals, polygons, etc.) so as to be fitted in accordance with the installation.

10 to 11 show another embodiment of an exhaust element 3 comprising anti-contamination means 30 in the form of an anti-contamination block therein.

This antifouling block extends longitudinally with respect to the exhaust element 3 and has a flow passage 33 adapted for the passage of the exhaust gas in the exhaust element 3.

This flow passage 33 penetrates the entirety from one side of the pollution prevention block to the other and leads to the outlet 31 of the exhaust element 3 like the pollution prevention means 30.

The flow passage 33 may be formed through a finishing operation performed after fabricating the antifouling block, or may be formed through extrusion molding during the manufacture of the antifouling block.

In accordance with a preferred embodiment of the present invention, the antifouling means 30 are arranged side by side with a plurality of antifouling modules which adopt the form of an antifouling rod, in combination with a rod-shaped filter shape, in a manner already known per se. It is configured by assembling in a way.

At this time, the flow path 33 is not equipped with the pollution prevention module. Thus, the non-installation of the pollution prevention module in the flow passage can be realized by removing the pollution prevention module around it after the manufacture of the pollution prevention means 30, and at the same time to define the flow passage 33 of this type. It can also be realized by the assembly method performed without putting the pollution prevention module from the beginning.

The flow passage 33 according to the invention may comprise (at least partially) a conveying means 11 for sending exhaust gas towards the engine 2, or may accommodate such a conveying means 11.

According to the embodiment of the invention shown in FIGS. 10 and 11, if the flow passage 33 at least partially constitutes the conveying means 11 for exhaust gas, the flow passage 33 is like the pollution prevention means 30. It leads to the outlet 31 of the exhaust element 3. In this case, the exhaust gas collecting means 10 consists of an inlet 32 of the flow passage 33 at the level of the outlet 31 of the exhaust element 3. The flow passage 33 is then used for the transfer of the exhaust gas towards the engine 2 at its end level opposing the end of this inlet and constitutes at least partly the exhaust element 11 (exhaust element ( (Waterproof) to the pipe 34, which passes through the side wall of 3).

According to another embodiment of the invention, the flow passage 33 receives a conveying means 11 consisting of a pipe or the like extending into the interior of the 33 thereof.

This pipe, like pollution control means 30, leads to the outlet 31 of the exhaust element 3. The exhaust gas collecting means 10 then consists of an inlet of the pipe at the level of the outlet 31 of the exhaust element 3, which is in particular waterproofly connected to the pollution prevention means 30 at this inlet level. As a result, it is possible to prevent backflow of the exhaust gas passing through the pollution prevention means 30 and the flow passage 33 on the outside of the pipe.

As shown in FIGS. 10 and 11, the pipe 34 (which constitutes the conveying means 11 of the exhaust gas) passes through the side wall of the exhaust element 3, which in this way passes through the exhaust element 3. This is done at the level of the other end or its periphery opposite to the end of the anti-pollution means 30 which is positioned to lead to the outlet 31 of the in order to be able to be connected to the engine 2.

The pipe 34 may then have, on the outside of the exhaust element 3, a substantial heat exchange surface with the surrounding environment for significant heat exchange between the interior of itself 34 and its external environment, resulting in an engine 2. It is possible to reduce the temperature of the exhaust gas that powers it.

According to another feature of the exhaust element 3 suitable for the invention (such as partially described above), the exhaust element 3 is cooled to ensure cooling of the exhaust gas collected and conveyed towards the engine 2. And means 35.

As described above, the cooling means 35 is configured such that the conveying means 11 has a significant heat exchange surface that allows heat exchange with the surrounding environment, in particular the atmospheric environment.

According to another embodiment not shown, the cooling means 35 may be constituted by a heat exchanger which is linked to the transfer means 11 of the exhaust gas. At this time, the heat exchanger may have a form of a conduit connected to a radiator included in the cooling solution (especially water) inside the vehicle.

According to another feature of the invention, the cooling means 35 may comprise a heat insulating means capable of insulating the pollution prevention means 30 included in the exhaust gas transfer means 11 and the exhaust element 3. .

According to the methods of the embodiment described above, it is possible to substantially improve the cooling of the exhaust gas. The exhaust gas generated in the engine 2 passes through an exhaust element 3 composed of pollution prevention elements 5, 5 ′.

The antifouling elements 5, 5 ′ comprise antifouling means 30 which can produce particles which may take the form of ceramics, fiber debris or lumps due to the temperature, impact and / or aging effects of the exhaust gases. It is included inside. These particles constitute a risk factor in that they can cause a decrease in the performance of the compressor of the turbocompressor 8 as well as the engine 2 and its peripheral parts.

In order to compensate for this disadvantage, the exhaust element 3 according to the invention comprises a particle removal means 36 capable of at least partially removing the particles contained in the gas from the collected exhaust gas.

As shown in the accompanying drawings, this particle removal means 36 is optionally limited to the exhaust gas collecting means 10 level (FIGS. 3 and 4) or the exhaust gas conveying means 11 level (FIG. 7). It consists of a particle capture device.

As described above and as shown in the accompanying figures, the conveying means 11 may at least partly consist of pipes 13, 21, 34 or conduits 25, 39, 42, which pipes or conduits And / or sections (triangles, squares, rectangles, trapezoids, circles, ovals, polygons, etc.) are pipes 13, 21, 34 or conduits 25, 39, 42 and peripheral devices of the exhaust element 3. It is limited to be able to be fitted in accordance with the cocoon frame of the vehicle, which is arranged to surround the exhaust element and the exhaust line 1 in particular.

As described above, the exhaust gas is collected at the level of the exhaust element 3 consisting of the pollution prevention elements 5, 5 ′.

According to one preferred embodiment of the present invention, the exhaust element 3 from which the exhaust gas is at least partially collected is a chemical and / or physical pollution prevention element 5 of the type described above (e.g. catalyst 6, Particle filter (7), such as a device in which a catalyst and a particle filter are combined).

According to another, not shown, embodiment of the present invention, the exhaust element 3, at which the partial collection of exhaust gas is realized, is an anti-noise element 5 ′ of the type described above (eg muffler). It is composed. The noise protection element 5 ′ is typically placed inside the exhaust line 1 on the downstream side of the chemical and / or physical pollution prevention element 5 of the type described above. This is to match the direction in which the gas circulates in the exhaust line 1.

The invention also relates to an exhaust line 1 comprising means 9 for powering the engine 2 with exhaust gas, according to a second system suitable for the invention.

According to the invention, the means 9 for powering the engine are on the one hand exhaust gas at the level of the exhaust element 3 consisting of the pollution prevention elements 5, 5 ′ (especially the outlet 31 is preferred). And a collecting means 10 for collecting the gas, and on the other hand, a conveying means 11 for conveying the gas collected toward the engine 2.

In this case, according to the first embodiment, the exhaust gas collecting means 10 is at the level of the exhaust element 3 having the characteristics corresponding to the exhaust element 3 subject to the above-described matter (first system). (In particular, the outlet 31 is preferred).

However, according to the second embodiment type shown in FIG. 12, the collecting means 10 of the exhaust gas consists of a perforation 37 formed downstream of the exhaust element 3. This is to match the direction of gas circulation in the exhaust line (1). The perforations 37 are formed in particular at the level of the exhaust pipes 38 which extend from the exhaust element 3 to its outlet 31. This is to discharge the exhaust singer into the atmosphere.

This perforation 37 is achieved by connecting a cylindrical conduit 39 or the like, which constitutes at least part of the conveying means 11 for sending exhaust gas in the direction of the engine 2, at the opening level formed in the exhaust pipe 38. Is formed.

According to an additional feature of the invention, the conveying means 11 is at least partially represented as conduits 13, 21, 34 or cylindrical conduits 39, 42. The form and / or section (triangular, square, rectangular, trapezoidal, circular, elliptical, polygonal, etc.) of this conduit or cylindrical conduit can be fitted in accordance with the peripheral device of the exhaust line 1, in particular the exhaust line 1 It is limited so that it can be installed in accordance with the cocoon frame of the vehicle arranged to surround the.

As an additional feature of this exhaust line 1, the exhaust line transfers the exhaust gas downstream of the exhaust element 3, in particular at the level of the exhaust pipes 17, 38 extending from the exhaust element 3 to its outlet. In the means 11 a treatment valve 40 for regulating the amount and / or pressure of gas. (Figure 1)

The treatment valve 40 consists of a back pressure valve of the helical sliding gate type or the like.

The treatment valve 40 is configured to be steerable through steering means (not shown) that the vehicle includes.

The treatment valve is operated so that the exhaust gas can be conveyed towards the engine when the pressure of the engine is weak or partial, while the exhaust gas can be discharged to the atmosphere when the pressure of the engine 2 is sufficient.

According to another feature, the exhaust line 1 on the one hand can be driven by the exhaust gas exiting the engine 2, and on the other hand it can suck the collected gas and send it to the engine 2. And a turbocompressor 8 comprising a configured turbine.

The invention is also connected to an exhaust gas exhaust line 1 comprising an exhaust element 3 on the one hand and on the other hand to a gas conveyed by the power supply means 9 according to the third system of the invention. It's also about cars with powered combustion engines.

The power supply means 9 of the engine 2 according to the present invention, on the one hand, collects means 10 for collecting exhaust gases at the level (especially the outlet) of the exhaust element 3 composed of pollution prevention elements 5, 5 ′. And, on the other hand, a conveying means 11 for sending the collected gas towards the engine 2.

According to a first embodiment of the motor vehicle, the exhaust element 3 included in the motor vehicle comprises the first system described above, in particular the collecting means 10 and the conveying means 11.

According to a second embodiment of the motor vehicle, the exhaust line 1 included in the motor vehicle comprises the second system described above, here also in particular the collecting means 10 and the conveying means 11.

According to yet another embodiment, however, the conveying means 11 of the collected gases are defined at the level of the surrounding elements of the exhaust line 1. According to a preferred embodiment of the invention, the conveying means 11 is coupled to this peripheral element.

In this case, the peripheral elements are the protective elements (especially thermal protection elements, for example insulation), which the vehicle comprises, the outer surface elements (especially the outer surface elements below the body), the structural elements (especially the lower body elements, Body elements, undercarriage elements, etc.).

This embodiment has the advantage that it is possible to couple the transfer function of the exhaust gas to the surrounding element with a slight modification of the existing surrounding element. This variant relates in particular to changing the volume of the level of the surrounding elements only by forming a double surface.

The invention is also connected to an exhaust line (1) comprising an exhaust element (3) to which the pollution prevention elements (5, 5 ') belong, and which supplies power to the combustion engine (2) included in a motor vehicle with exhaust gas. It's about how.

This method can in particular be operated by (but not limited to) at least one of the three systems described above.

This method collects a part of the exhaust gas at the pollution prevention element 5, 5 'level (especially the outlet 31) and powers the engine 2 with this collected and uncontaminated exhaust gas.

To this end, when the exhaust gas circulates in the power supply means 9 of the engine 2 to power the engine 2 with the uncontaminated gas, the exhaust gas is a gas generated directly from the engine 2. It circulates in the opposite direction as opposed to the direction of and reaches into the pollution prevention element 5, 5 ′.

According to this method, cooling of this gas is realized before powering the engine 2 with the collected exhaust gas.

In fact, a conduit (pipes 13, 21, 34, between the collecting point of the exhaust gas (collection means 10) and the engine 2, having a considerable heat exchange surface for heat exchange with the surrounding environment, in particular the atmospheric environment, Cooling is also realized while the exhaust gas is circulated in the conduits 25 and 42 and the cylindrical conduit 39.

According to another embodiment, the circulation of the exhaust gas in the conduit included or connected to the heat exchanger between the collection point of the exhaust gas (the collecting means 10) and the engine 2. This is achieved while cooling is achieved.

According to an additional feature of this method, before powering the engine 2 with the collected exhaust gas, some of the particles contained in the exhaust gas are removed from the exhaust gas, in particular in the particle trap 36. do.

These particles are generated, in particular, due to the exhaust gas deteriorating the function of the exhaust element 3, and may be composed of ceramics, fiber debris or lumps.

According to another feature, the exhaust gas circulates in the direction of the engine 2 by operating on the processing valve 40 included in the exhaust line 1, in particular downstream of the collecting point (the collecting means 10) of the exhaust gas. This is done.

According to a further embodiment, the circulation of the exhaust gas towards the engine 2 is realized under the depressing effect produced by the turbocompressor 8 connected to the collection point of the exhaust gas (the collecting means 10). do.

According to one particular embodiment, the circulation of exhaust gas towards the engine 2 is such a depressing effect produced by the turbocompressor 8. And under the working effect performed on the treatment valve 40.

As described above, the method relates to collecting the exhaust gas at the level of the exhaust element 3 consisting of the pollution prevention elements 5, 5 ′ (in particular, the outlet is preferred).

In fact, according to the first embodiment, the antifouling element 5 is of chemical and / or physical type, and may in particular be composed of the catalyst 6 and / or the particle filter 7 or the like.

According to the second embodiment, the antifouling element 5 ′ is of a type particularly related to sound composed of a muffler or the like.

In practice, the antifouling element 5 'may be located downstream of the chemical and / or physical antifouling element. This is to match the direction in which the gas circulates in the exhaust line 1.

Claims (49)

A method of powering a combustion engine (2) with gas, said combustion engine being connected to an exhaust line (1) comprising an exhaust element (3) comprised in an automobile and composed of pollution prevention elements (5, 5 '). In the method for powering the combustion engine 2 with gas, A portion of the exhaust gas is collected at the level of the pollution prevention element 5, 5 ′ and / or downstream of the pollution prevention element 5, 5 ′, and thus collected in the engine 2 with the non-contaminated exhaust gas thus collected. A method for supplying power to a combustion engine (2) with gas, characterized in that for supplying power. The method of claim 1, A method of powering a combustion engine (2) with gas, characterized in that the exhaust gas must be cooled before powering the engine (2) with the collected exhaust gas. The method of claim 2, Between the collection point 10 of the exhaust gas and the engine 2, in conduits 13, 21, 25, 34, 39 having a substantial heat exchange surface for heat exchange with the surrounding environment, in particular with the atmospheric environment. A method of supplying power to a combustion engine (2) with a gas, characterized in that the exhaust gas is cooled while the exhaust gas is circulated. The method of claim 2, Between the collection point 10 of the exhaust gas and the engine 2, the exhaust gas is cooled while the exhaust gas is circulated in a conduit included or connected to the heat exchanger. A method of supplying power to the combustion engine (2) with a gas. The method according to any one of claims 1 to 4, Before powering the engine 2 with the collected exhaust gas, the particles, which are contained in the exhaust gas, are trapped in the particle catcher 36, thereby removing the particles from the exhaust gas. Method of powering the combustion engine (2). The method according to any one of claims 1 to 5, In some cases, in particular, the exhaust line is connected to the collection point 10 and / or by a treatment valve 40 of the exhaust line 1 located downstream of the collection point 10 of the exhaust gas. A method of supplying power to the combustion engine (2) with gas, characterized in that circulation of exhaust gas in the direction of the engine (2) is effected by the negative pressure effect generated by the turbocompressor (8). . The method according to any one of claims 1 to 6, The collection of exhaust gases is characterized in that they are realized at the level and / or downstream of the chemical and / or physical contamination prevention element 5, in particular composed of a catalyst 6 and / or a particle filter 7 or similar device. Method of powering the combustion engine (2). The method according to any one of claims 1 to 6, A method of powering a combustion engine (2) with gas, characterized in that the collection of exhaust gases is realized at the level and / or downstream of the noise suppression element (5 '), in particular composed of a muffler or similar device. In the exhaust element (3) for a gas exhaust line (1) of an automobile comprising a combustion engine (2) and power supply means (9) for powering the engine (2) with exhaust gas, The power supply means 9 comprises a collecting means 10 for collecting the exhaust gas at the level of the exhaust element 3 composed of pollution prevention elements 5, 5 ′, and the exhaust gas collected in the engine ( 2) exhaust element 3, characterized in that it comprises a conveying means 11 which is directed towards 2). The method of claim 9, The collecting means 10 for collecting the exhaust gas is constituted by perforations 12 formed at the level of the exhaust element 3, and the exhaust gas conveying means 11 is constituted by a pipe 13. Exhaust element (3). The method of claim 9, The pollution prevention element 5 takes the form of a housing 14, the housing of which is closed at least partially at the level of its outlet 31 which constitutes the exhaust gas collecting means 10. Exhaust element (3), characterized in that it comprises means (15). The method of claim 11, The closing means (15) comprises connecting means (16) connected to an exhaust pipe (17) for discharging a part of the exhaust gas, and said conveying means (10) for sending the remaining part of the exhaust gas to the engine (2). Exhaust element 3, characterized in that it comprises a connecting means 18 connected to 11. The method of claim 12, The closing means 15 has the form of a stopper 19 configured to close the housing 14, the connecting means 16 connected to the discharge pipe 17 being defined at the closing means level, and Exhaust element (3), characterized in that a side ridge (20) comprising said connecting means (18) connected to a conveying means (11) is defined at said closing means level. The method of claim 11, The closing means 15 comprise connecting means 16 connected to the discharge pipe 17 for discharging a portion of the exhaust gas and at least partially collecting the collecting means 10 for collecting the remaining portion of the exhaust gas. Exhaust element (3), characterized in that it comprises one opening (22) constituting. The method of claim 14, The exhaust element 3 on the one hand is arranged above the opening 22 and above the closure means 15 and on the other hand comprises a cover 23 fixedly connected to the closure means 15. And the cover (23) at least partly comprises a collecting means (10) for collecting the remaining part of the exhaust gas used to power the engine (2). The method according to claim 14 or 15, The exhaust element 3 comprises an enclosing portion 24, the encapsulating portion being disposed on and fixedly connected to the portion of the housing 14, the encapsulating portion with the portion of the housing 14 Exhaust element (3), characterized in that it defines one conduit (25) which constitutes at least partly exhaust gas transport means (11). The method according to claim 15 or 16, The cover (23) and the enclosing portion (24) are interconnected, in particular the exhaust element (3), characterized in that it is limited to the same part formed through the mold work of the iron plate. The method of claim 9, The exhaust element 3 takes the form of a housing 14 comprising two compartments 27, 28 separated into one diaphragm 29 in the interior of the asset, one of the two compartments ( 27 comprises an anti-pollution means 30, the other compartment 28 being at least partially configured of the conveying means 11 for sending the exhaust gas towards the engine 2. (3). The method of claim 18, The exhaust gas collecting means 10 defines the exhaust gas conveying means 11, the exhaust gas collecting means of the compartment 27 and the exhaust element 3 containing the pollution prevention means 30. Exhaust element (3), characterized in that it consists of an inlet (32) of a compartment (28) leading to an outlet (31) level. The method of claim 18 or 19, The exhaust element 3 is formed by two separate ring assembly methods, one of which defines a first part of the antifouling compartment 27 and the other of the second part of the antifouling compartment 27. And at least part of the compartment (28) of said exhaust gas conveying means (11). The method of claim 9, The antifouling element 5 comprises a conduit 42 and a housing 14 which constitute the exhaust gas conveying means 11, the conduit 42 having the housing 14 around its end 43. Is connected to the outlet 31 of the exhaust element 3, and the end 43 of the conduit 42 comprises at least partly the collecting means 10 of the exhaust gas. Exhaust element 3, characterized in that it has one hole 44. The method of claim 21, The end 43 of the conduit 42 extends substantially parallel to the enclosing portion 41 of the housing 14 to which the end 43 is fixedly connected by welding, braze welding or the like on top of the housing. The end 43 has a supplemental form of the housing 14, in particular a supplemental form of the enclosing portion 41 of the housing 14, at the level of the engaging region 45 of the housing 14. Exhaust element (3). The method of claim 21 or 22, The housing 14 comprises a closing means 15 which covers the enclosing portion 41 of the housing 14 at the level of the outlet 31 of the exhaust element 3, and by means of welding, braze welding or the like Exhaust element (3), characterized in that it comprises a receiving means (46) for receiving an end (43) of the conduit (42) to which the closing means (15) are fixedly connected. The method of claim 23, wherein The conduit 42, at its end 43 level, is fixedly connected to the enclosing part 41 and has an encapsulating part of the housing 14 of the exhaust element 3 having a supplemental form of the encapsulating part 41. 41) a replenishment of the closure means 15, consisting of a first termination section 47 located above and connected to the first termination section 47 and connected to the section 47 and the closure means 15. Exhaust element (3), characterized in that it consists of a second end section (48) having a shape. The method of claim 9, The exhaust element 3 has therein a pollution prevention means 30 having a flow passage 33 which constitutes or accommodates the conveying means 11 for sending the exhaust gas toward the engine 2. Exhaust element 3, characterized in that. The method of claim 25, The exhaust element (3), characterized in that the exhaust gas conveying means (11) consists of a pipe extending into the flow passage (33). The method of claim 25 or 26, The exhaust gas collecting means (10) constitutes the exhaust gas conveying means (11), and together with the pollution prevention means (30), the flow passage (33) connected to the level of the outlet (31) of the exhaust element (3). Or exhaust element 3, characterized in that it consists of an inlet 32 of a pipe. The method according to any one of claims 25 to 27, The anti-contamination means (30) is an exhaust element (3) characterized in that it has the form of an anti-contamination block with the flow passage (33) formed through finishing or extrusion. The method according to any one of claims 25 to 27, The pollution prevention means 30 is constituted by assembling a plurality of pollution prevention modules in a side by side arrangement, whereas the flow passage 33 is configured by excluding the module during the assembly. ). The method according to any one of claims 9 to 29, The exhaust element (3), characterized in that it comprises cooling means (35) for cooling the exhaust gas collected and conveyed towards the engine (2). The method of claim 30, The cooling means 35 comprises exhaust means 3 for insulating the exhaust gas transport means 11 and the pollution prevention means 30 included in the exhaust element 3. . 32. The method of claim 30 or 31, The exhaust element (3), characterized in that the cooling means (35) are configured such that the conveying means (11) can have a substantial heat exchange surface capable of exchanging heat with the surrounding environment, in particular the atmospheric environment. 32. The method of claim 30 or 31, The exhaust element (3), characterized in that the cooling means (35) consists of a heat exchanger connected to the exhaust gas transport means (11). The method according to any one of claims 9 to 33, The exhaust gas conveying means 11 has at least partly the form of the pipes 13, 21, 34 or the conduits 25, 39, 42, the form and / or the section of the pipes or the conduits of the pipes 13 , 21, 34 or conduits 25, 39, 42 in accordance with the fixed frame of the vehicle, in particular arranged around the exhaust element 3 so that it can be fitted to the peripheral device of the exhaust element 3. Exhaust element 3, characterized in that it is limited to. The method according to any one of claims 9 to 34, The exhaust element (3), characterized in that the exhaust element (3) comprises particle removal means (36) capable of at least partially removing the particles contained in the exhaust gas from the collected exhaust gas. 36. The method of claim 35 wherein The exhaust element (3), characterized in that the particle removal means (36) consists of a particle trap which is optionally limited to the exhaust gas collection means (10) level or the exhaust gas transport means (11) level. The method according to any one of claims 9 to 36, The pollution prevention element is characterized in that the exhaust element 3 comprises a chemical and / or physical pollution prevention element 5 consisting of a catalyst 6 or a particle filter 7 or a combination of a catalyst and a particle filter. ). The method according to any one of claims 9 to 36, The exhaust element (3), characterized in that the pollution prevention element consists of a noise prevention element (5 '), such as a muffler. In a vehicle exhaust line (1) equipped with a combustion engine (2), comprising an exhaust element (3) and comprising means (9) for powering the engine using exhaust gas, The power supply means 9 for supplying power to the engine 2 is a collecting means 10 for collecting exhaust gas at the level of the exhaust element 3, which is composed of pollution prevention elements 5, 5 ′. And a conveying means (11) for sending the collected exhaust gas toward the engine (2). The method of claim 39, The exhaust line 1 is characterized in that the exhaust line 1 comprises the collecting means 10 for collecting the exhaust gas at the level of the exhaust element 3 according to any one of claims 9 to 38. ). The method of claim 39, The exhaust gas collecting means 10 consists of a perforation 37 formed downstream of the exhaust element 3, while the conveying means 11 is of a cylindrical conduit 39 or of a similar form. Exhaust line (1). The method according to any one of claims 39 to 41, The conveying means 11 has at least partly the form of the pipe 13, 21, 34 or conduit 39, the form and / or section of the pipe or conduit being connected to the peripheral device of the exhaust line 1. Exhaust line (1), characterized in that it is limited so that it can be fitted in accordance with the cocoon-shaped frame of the vehicle, in particular arranged to surround the exhaust line (1). The method according to any one of claims 39 to 42, The exhaust line (1) is characterized in that it comprises a processing valve (40) downstream of the exhaust element (3) for regulating the amount and / or pressure of gas in the exhaust gas conveying means (11). Exhaust line (1). The method according to any one of claims 39 to 43, The exhaust line (1) includes a turbine configured to be driven by the exhaust gas exiting the engine (2) and configured to suck the collected exhaust gas and send it to the engine (2). An exhaust line (1) comprising (8). A motor vehicle equipped with a combustion engine (2), the combustion engine being connected to an exhaust line (1) comprising an exhaust element (3), which is powered by exhaust gas via a power supply means (9). In the automobile to which the combustion engine 2 is supplied, The power supply means 9 for powering the engine 2 collects exhaust gas at the level of the exhaust element 3, which consists of pollution prevention elements 5, 5 ′ and / or downstream of the exhaust element. A vehicle equipped with a combustion engine (2), characterized in that it comprises a collecting means (10) and a conveying means (11) for sending the collected exhaust gas to the engine (2). The method of claim 45, A vehicle equipped with a combustion engine (2), characterized in that the exhaust element (3) is an exhaust element according to any one of claims 9 to 38. The method of claim 41, wherein 45. An automobile equipped with a combustion engine (2), characterized in that the exhaust line (1) is an exhaust line according to any one of claims 39 to 44. The method of claim 45, The collecting gas conveying means (11) is at least partly defined at the level of the peripheral element of the exhaust line (1), in particular a vehicle equipped with a combustion engine (2), characterized in that it is coupled to the peripheral element. The method of claim 48, The peripheral device element is a vehicle equipped with a combustion engine (2), characterized in that consisting of a protective element, a maintenance element, a structural element of the vehicle.

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