DE112007002746T5 - A method of supplying an engine with exhaust gas, exhaust element, exhaust system and vehicle comprising means for supplying such an engine with exhaust gas - Google Patents

Abstract

Exhaust element (3) for an exhaust system (1) of a vehicle having an internal combustion engine (2), which has the following:
- a pollutant emission-reducing element (5, 5 ') comprising a housing (14) which is formed by a sheath (41) and by a closing means (15), this shell (41) in the region of the output (31) of the pollutant emission closing element (5, 5 ') closes again;
Means (9) for supplying the engine (2) with exhaust fumes, said supply means (9) having on the one hand means (10) for adding exhaust fumes in the pollutant emission reducing element (5, 5 ') and on the other hand, means (11) for conveying the collected gases to the engine (2);
- A channel (42) which forms the means (11) of the exhaust gases and has an end (43), in the region of which this channel (42) is connected to the housing (14), on the other hand in the region of the outlet ( 31) of the exhaust element (3) opens and on the other hand ...

Description

The The present invention relates to a method for the supply an internal combustion engine, which includes a vehicle, with exhaust gases. This invention also relates to an exhaust element comprising Means for supplying such an engine with exhaust gases, on an exhaust system and on a vehicle comprising such supplies.

These This invention relates to the field of the automotive industry and more particularly that of the equipment, which make it possible the escape of the combustion of a fuel inside an internal combustion engine originating To ensure gases.

One such internal combustion engine needed for his Operation a supply of fuel and with oxygen carriers, the are formed in particular from oxygen. This oxygen usually comes from from the ambient air that is introduced into the engine, in particular, after being mixed with the fuel.

A special mode of operation is actually the air (diesel engine) or the air-fuel mixture (Gasoline engine) to compress before it is introduced into the engine, which advantageously allows to increase the power of this engine. Such a compression is usually by a turbocompressor, on the one hand, through the exhaust gases, leaving the engine, spinning turbine, and on the other hand a compressor that is driven by the turbine and therefor is provided, either air at atmospheric pressure or an air-fuel mixture suck and to compact it before its introduction into the engine.

To For this purpose, it is important to note that the combustion of the fuel is optimal when the oxygen and the fuel in stoichiometric proportions available.

This is not always the case and one usually observes (and in particular in diesel engines) that the engine operates in excess of air, ie in Presence of oxygen by combustion of the fuel Exhaust gases produced, which are heavily loaded with nitrogen oxides NOx. These nitrogen oxides NOx are regarded as pollutants, which it too Remove to clean exhaust gases (without nitrogen oxides) in the the atmosphere leave. Such removal is actually by an exhaust element guaranteed that usually is formed by a catalyst, the exhaust system of the vehicle contains.

Around the performance of a vehicle in the field of environmental pollution To further improve, one solution is to reduce the amount of produced the combustion of the fuel inside the engine To reduce nitrogen oxides.

These solution is a return of the Exhaust gases (so-called EGR), which consists of to collect some of the exhaust gases that are actually low in oxygen, and this part of the exhaust gases back into the intake manifold to the air-fuel mixture, which supplies the engine to dilute. this makes possible it is advantageous to reduce the amount of available oxygen, to ensure the combustion of the fuel, and consequently exhaust gases to produce, which contains a reduced amount of nitrogen oxides.

you will notice that these exhaust gases are usually at the outlet of the engine Motors and collected in the area of an exhaust manifold to introduced into this engine in the region of an intake manifold again become. Between these bends is used an EGR valve, which is designed to reduce the flow this recycled exhaust gases to control, in particular, the flow of exhaust gases at certain Engine speeds (especially the intermediate speeds) and per cycle to grant.

In fact included these recirculated exhaust gases Nitrogen oxides and carbon black (in particular in a diesel engine), which are in the form of particles. These particles are capable of polluting this EGR valve, even damage to him to cause what is usually As a result, this EGR block valve in the open position becomes. This has the consequence, the introduction of exhaust gases in the Engine to favor. The combustion of the fuel takes place in mm in excess of recirculated exhaust gases, what a bad burning of this fuel by lack in the air. This bad burning causes the soot, the carbon monoxide and hydrocarbons increase, causing damage in the area the exhaust system, especially in the field of pollutant emission diminishing element that contains these latter can cause and that is formed by a catalyst.

Besides and in finding such a problem, especially by one Flow meters, offset the means for controlling the operation of the motor this latter into a "defect" mode, which by sending a visual or audible signal to warn the driver and / or a power loss of the engine.

One Another disadvantage is that the exhaust gases on the exhaust manifold still especially hot, so they called the EGR valve very large thermal loads subject to damage to this valve.

It It is also observed that the introduction of a hot gas in an engine results in lowering performance and performance. Indeed This performance drop is all the clearer the larger the Temperature of such a gas is, which is more critical for recycled and name is Exhaust gases.

To For this purpose it is observed that this disadvantage already now in the context of the compression of ambient air by a turbo compressor known is, with the result that the temperature of this air is increased. To fix it, it is known to loop through an intercooler to complete.

Also and in the context of the return of exhaust gas would it be Cheap, to adapt such an intercooler to the temperature of these gases, the much higher is that of ambient air, which is hard to carry out, particularly expensive, bulky and an energy consumer. Another solution would it be, to develop an intercooler specific to the repatriation of the Exhaust fumes are adjusted, which on the one hand is an element in the already overcrowded engine compartment adds and on the other hand also still as difficult, costly and as Energy consumer proves.

The The present invention contemplates the disadvantages of the devices of the prior art.

To For this purpose, the invention relates to a method for the supply an internal combustion engine with gas that contains a vehicle and the is connected to an exhaust system, the at least one exhaust element, including a pollutant emission-reducing element, characterized in that it consists in that at least one Part of the exhaust gases in the area (especially at the exit) and / or downstream the pollutant emission-reducing element is collected and that the engine with these collected and purified exhaust gases is supplied.

This Procedure is that, before supplying the motor with Ensures the collected exhaust gases will, the cooling ensures these gases becomes.

One Another feature is that, before the supply of the engine is ensured with the collected exhaust gases, these gases at least some of the particles that contain them are released in particular, by trapping them in a particulate trap guaranteed becomes.

Actually ensures the circulation of the gases in the direction of the engine, by acting on a charging valve depending on the exhaust system, especially downstream a collection point of these gases, contains, and / or by the action a vacuum coming from one connected to the collection point Turbocompressor is generated.

The Invention also relates to an exhaust element for exhaust system of a vehicle with internal combustion engine, and includes means to a motor with exhaust gases to supply, characterized in that the supply means on the one hand comprises means for removing the exhaust gases in the region of an exhaust element, formed by a pollutant emission-reducing element is to collect, and on the other hand means to collect the collected To lead gases to the engine.

A embodiment is that means for collecting the gases from a branch pipe are provided, which are designed in the region of the exhaust element while the funding from a tube is formed.

A another embodiment is that the pollutant emission-reducing element the Shape of a housing assumes that in the area of its output means for closing this housing comprising at least partially means for collecting the gases.

In a same case, the closing means on the one hand means for his Connection to a pipe to dispose of a part of the exhaust gases and on the other hand means for its connection to at least one means of transporting the other part of these gases to the engine.

Yet another embodiment concerns a closing means, on the one hand comprises a means for its connection to a pipe for discharging a part of the exhaust gases and on the other hand at least one opening, at least in part the means for collecting the other part which forms gases.

It also includes the exhaust element a hood, on the one hand on the or the openings and above the closure means is arranged and on the other hand firmly connected thereto, wherein this hood at least in part the means of collecting the other Part of the gases that forms for it are provided to power the engine.

at this embodiment For example, the exhaust element includes a shell that extends over a portion of the housing of the Exhaust element arranged, is firmly connected to this and with this housing part delimits a channel which at least partially comprises the means for conveying the Gases forms.

According to one another embodiment takes the exhaust element takes the form of a housing comprising two spaces inside, which are separated by a partition and one of which is the pollutant emission diminishing elements, while the other at least partly the means of transport which forms gases in the direction of the engine.

A another embodiment relates to a pollutant emission-reducing element comprising a housing and a passage forming the means for conveying the gases End has, in the area on the one hand this channel to the casing is connected, on the other hand in the region of the outlet of the exhaust element ends and on the other hand another opening comprising, at least in part, the means for collecting the exhaust gases forms.

Yet another embodiment is that the exhaust element inside pollutant emission comprises reducing elements which in the longitudinal direction at least a passage forming a means for conveying the gases to the engine or picks up.

One Another feature of this exhaust element is that it Means includes to the cooling the collected and returned to the engine gases ensures.

One additional Feature is that this exhaust element comprises means around the collected exhaust gases from at least part of the particles, which they contain, to liberate.

Finally, poses the means of transportation the gases of this exhaust element at least partially as a pipe whose shape and / or cross-section are fixed to such Pipe to adapt to the environment of the exhaust element, in particular to a cell which is fixed in the area of the motor vehicle and in the interior of which this exhaust element is arranged.

These Invention also relates an exhaust system for A vehicle with an internal combustion engine and comprising at least one exhaust element and means for supplying engine with exhaust gases thereby characterized in that the supply means on the one hand a means include the exhaust gases in the area of an exhaust element, the is formed by a pollutant emission reducing element, on the other hand a means to collect the collected gases to lead to the engine.

A first embodiment is that this exhaust system includes a means to the gases to collect in the range of an exhaust element of the above type.

These Exhaust system may still include means for collecting gases, which are formed by a branch pipe, the downstream of the exhaust element accomplished is while the funding through a tubular Channel or similar be formed.

Finally, concerns the invention is a vehicle with an internal combustion engine, on the one hand connected to an exhaust system comprising at least one exhaust element is, and on the other hand supplied by supply means with exhaust gases is characterized in that the means for supplying the Motors on the one hand means for collecting the exhaust gases in the area and / or downstream an exhaust element that reduces pollutant emissions Element is formed, and on the other hand means for conveying the collected gases to the engine.

A special embodiment is that means for transporting the collected gases at least partially diminishing in the area of pollutant emissions Elements of the exhaust system are provided, in particular in a such element are integrated.

Actually the pollutant emission-reducing element of a protective element, from a cladding element, from a structural element of the vehicle or other things.

The Advantages of the present invention are that the engine is supplied with the exhaust gases, previously from an element have been cleaned to protect the environment against pollution, which makes it possible a fouling of the means for supplying the engine and the turbo-compressor (through to avoid the exhaust gases), as well as a better combustion of the Fuel allows resulting in a reduction in the amount of particles ejected by the engine leads, the recirculated with these exhaust gases has been supplied.

One Another advantage is that these exhaust gases are cooled, before they reach the engine, which allows the services of the Do not affect the engine.

The fact that the exhaust gases from the par It is advantageously possible to relieve wear of the turbocompressor and even of the engine and / or its wear, due to wear of the pollutant emission reducing element (particularly under the influence of the exhaust gases, their heat, for example thermal or physical or other impacts) Supply organs to avoid.

Further Objects and advantages of the present invention appear in the course the following description, which refers to embodiments which only as illustrative and non-limiting examples are.

The understanding This description will be simplified by referring to the annexed attached Drawings reference is made in which:

1 Figure 3 is a schematic view of an engine connected to an exhaust system and associated with means for its supply of exhaust gases;

2 is a schematic and perspective view of an exhaust element, which includes such supply means according to a first embodiment;

3 is a schematic and perspective partial view of an exhaust element, the supply means according to a second embodiment comprises;

4 is a schematic view in longitudinal section of an exhaust element, the supply means according to a third embodiment comprises;

5 a schematic view in radial section of in 4 is shown exhaust element;

6 is a schematic and perspective view of an exhaust element, the supply means according to a fourth embodiment comprises;

7 a schematic view in longitudinal section of the in 6 is shown exhaust element;

8th is a schematic and perspective view of an exhaust element, the supply means according to a fifth embodiment comprises;

9 a schematic view in longitudinal section of the in 8th is shown exhaust element;

10 is a schematic and perspective view of an exhaust element, the supply means according to a sixth embodiment comprises;

11 a schematic view in longitudinal section of the in 10 is shown exhaust element;

12 is a schematic view of an exhaust system, which comprises the supply means according to a sixth embodiment;

The The present invention relates to the field of the automotive industry and in particular that of equipment, which make it possible the escape of the combustion of the fuel inside a Internal combustion engine, which includes a motor vehicle, derived gases to ensure.

In 1 such exhaust equipment is shown, usually in the form of an exhaust system 1 Represents an internal combustion engine 2 is connected and from a variety of exhaust elements 3 is formed.

In known manner, the exhaust elements 3 that has such an exhaust system 1 includes, at least in part, one to the engine 2 connected manifold 4 and by at least one pollutant emission-reducing element 5 . 5 ' educated.

For this purpose, it is observed that such a pollutant emission-reducing element 5 of chemical or physical type.

Such a pollutant emission-reducing element 5 Namely, it may be of a chemical type and be provided to at least partially eliminate soiling by chemical means. In known manner, such a pollutant emission-reducing element 5 are now formed by a catalytic converter, which is particularly intended to eliminate at least a portion of the nitrogen oxides (NOx).

Such a pollutant emission-reducing element 5 However, it can also be of a physical type and be provided to at least partially eliminate soiling by physical means. In a known manner, such a pollutant emission-reducing element can now 5 from a particle filter 7 (FAP), which is intended to eliminate at least a portion of the particles containing the exhaust gases, in particular the soot produced by the combustion of diesel fuel.

Finally, such a pollutant emission-reducing element 5 are formed by a combined physical and chemical system, in particular a catalyst filter for particles (commonly called FAP-Kat) or the like.

It is also observed that such a pollutant emission-reducing element 5 ' through an element 5 ' can be formed, which is intended to protect the environment against pollution caused by the emission and circulation of exhaust gases in the exhaust system 1 to ensure noise pollution. Such a pollutant emission-reducing element 5 ' can now be formed by a silencer or the like.

In fact, such an exhaust element 5 ' for the protection of the environment against noise emission usually in the area of the exhaust system 1 downstream of a chemical and / or physical pollutant emission reducing element disposed in the direction of the flow of exhaust gases in the exhaust system 1 ,

An additional feature is that the exhaust system 1 another exhaust element 3 may include that of a turbo compressor 8th is formed between the manifold 4 and an exhaust element to protect the environment against pollution 5 . 5 ' is inserted.

In known manner, such a turbocompressor 8th on the one hand a turbine, which is in the circle of the engine 2 and a compressor driven by the turbine and arranged to provide a gas such as a mixture of gas and fuel prior to its introduction into the engine 2 to condense.

It is observed that under an engine 2 operating on the principle of exhaust gas recirculation (EGR principle) according to the invention, the compressor is in fact intended to compress such exhaust gases as a mixture of fuel and exhaust gases prior to introduction into such engine 2 ,

To do that involves having such an engine 2 equipped vehicle still means 9 which are intended to supply this engine 2 with at least part of the combustion of a fuel inside this engine 2 to ensure originating exhaust gases.

According to the invention, such supply means 9 on the one hand a means 10 to the exhaust gases in the area and / or downstream of an exhaust element 3 to collect that from a pollutant emission-reducing element 5 . 5 ' is formed, in the direction of the circulation of the exhaust gases inside the exhaust system 1 ,

On the other hand, these supplies include 9 a means 11 , which is designed to bring the collected exhaust gases to the engine 2 to transport, in particular (and at a first time) to a turbo compressor 8th which is designed to prevent the compression of these gases prior to their introduction into this engine 2 to ensure.

For this purpose, it should be noted that the supply of this engine 2 with exhaust gases can actually be ensured by means of various systems, which are currently described in the course of the description.

For example, and according to a first system according to the invention, it is in particular the exhaust element 3 containing at least part of the funds 9 to supply the engine 2 includes with exhaust gases.

Such supplies 9 now include a means 10 to exhaust gases in the area of an exhaust element 3 to collect that from a pollutant emission-reducing element 5 . 5 ' is formed. In fact, and according to a preferred embodiment of the invention, this collection is preferably in the region of the exit of this exhaust element 3 guaranteed.

In 2 a first embodiment of the invention has been shown, in which the means 10 for collecting the gases from a branch pipe 12 is formed in the area of the exhaust element 3 is provided while the subsidy 11 now from a pipe 13 or the like is formed.

It is observed that this tube 13 has a shape and / or a cross-section defined to be such a tube 13 to the surroundings of the exhaust element 3 to adapt, in particular to a cell which is set in the area of the motor vehicle, and in the interior of this exhaust element 3 to order.

What the pipe branch 12 As far as this is concerned, this may be due to a branching of a pipe (in particular the end of the pipe 13 the funding 11 forms) in the region of at least one in said exhaust element 3 introduced opening, preferably in the vicinity of the output of this exhaust element 3 in the direction of the flow of gases inside the exhaust system 1 ,

It is observed that this opening or openings are preferably in the region of the wall of a housing 14 which the cleaning elements 30 includes and at least partially such an exhaust element 3 forms, are introduced.

For this purpose, it should be noted that such an exhaust element 3 in the usual way, at least in part, of such a housing 14 is formed, which is now a means 15 which is intended to close this housing 14 in the region of its outlet and in accordance with the direction of the flow of gases inside this housing 14 ,

In particular, according to an additional feature of the invention, it is such a closure means 15 that now at least partially the means 10 to collect the exhaust gases, as in the in the 3 to 5 More specifically, and as can be seen in these figures, the closing means 15 be provided for a housing 14 which at least partially takes the form of a tube, which is accomplished in particular by a known roll-fold technique, even by the joining of two half-shells or the like.

Also and according to a in 3 illustrated embodiment comprises such a closing means 15 on the one hand a means 16 for its connection to a pipe for removal 17 Part of the exhaust gases into the atmosphere (yes, even to an element to protect the environment against sound emission 5 ' ) and on the other hand at least one agent 18 for its connection to at least one agent 11 for conveying the other part of these gases to the engine 2 ,

In a preferred manner, such a closing agent 15 in the form of a lid 19 represent, which is intended to the housing 14 and in its area 19 on the one hand (and in particular on the underside of the lid 19 ) the said means 16 for connection to a discharge pipe 17 and on the other hand (and especially in the area of a floor, this lid 19 comprises) at least one lateral protuberance 20 are defined as a means 18 for connection to at least one conveyor 11 includes.

It should be noted that such a closing agent 15 in the form of a lid 19 can be produced by deep drawing and starting from at least one metal plate according to a particular embodiment. Such an embodiment makes it possible, on the one hand, said means for connection 16 to the discharge pipe 17 , in the area of the underside of the lid 19 , and on the other hand, the means or means for connection 18 to a subsidy 11 (In particular, the lateral protuberance or the lateral protuberances 20 ) in the area of a floor, this cover 19 includes.

As mentioned above, such a closure means 15 be so provided for one or more means 11 for conveying exhaust gases, now preferably in a symmetrical manner with respect to an axis passing through an axis, along which the exhaust element 3 extends, can be introduced. For this purpose it will be observed that such means 11 for conveying the gases now in the form of a pipe 21 can represent, whose shape and / or cross section (triangular, square, rectangular, trapezoidal, round, oval, polygonal or otherwise) are defined to such a pipe 21 to the surroundings of the exhaust element 3 , in particular to a cell which is defined in the region of the motor vehicle to adapt, and in the interior of said exhaust element, even the exhaust system 1 , to order.

According to another feature, such means 11 for conveying the gases in the form of a pipe 21 a very large exchange surface with the surrounding area of the exhaust element 3 and the tube 21 on. Such an embodiment advantageously allows a very large exchange of heat between the interior of this tube 21 and the outer area, in particular the ambient air, which advantageously makes it possible to reduce the temperature of the exhaust gases provided, the engine 2 to supply.

In the 4 and 5 is another embodiment of a closing means 15 a housing 14 which can also be produced by a traditional roll-fold technique, even by joining two half-shells or the like.

This closing agent 15 includes on the one hand a means 16 for its connection to a pipe 17 for discharging a part of the exhaust gases into the atmosphere (yes, even to an element for environmental protection against sound pollution 5 ' ) and on the other hand at least one opening 22 that at least in part is the means of collecting 10 the other part of the gases provided, the engine 2 to supply.

For this purpose, it should be noted that this closing means 15 even from a lid 19 can be formed, the housing 14 closes again. Such a lid 19 may advantageously be of traditional design and already made to such a housing 14 include. In fact and in an advantageous way needed this lid 19 only a design that consists in it, at least one opening in it 22 for the flow of exhaust gases.

As it is in 4 it can be seen comprises this exhaust element 3 another hood 23 , on the one hand, over the opening (s) 22 as well as over the closing agent 15 is arranged, and on the other hand firmly with this 15 is connected (in particular in a sealed manner, for example by welding).

In fact, this hood makes 23 at least in part the means 10 for collecting the other part of the exhaust gases provided, the engine 2 to supply.

In a similar case, the said collection means 10 from this hood 23 as well as of the one or more openings 22 educated.

As it is in the 4 and 5 it can be seen comprises the exhaust element 3 another shell 24 that over a part of the housing 14 of the exhaust element 3 (preferably longitudinally) is arranged. In fact, the introduction of this shell 24 in the way that ensures the environment of the exhaust element 3 is observed, in particular above, laterally and / or below this exhaust element 3 , Such a shell 24 is stuck with this part of the case 14 (in a sealed manner, especially by welding) connected and limited with this part of the housing 14 a channel 25 , at least partly the means 11 for conveying the exhaust gases to the engine 2 forms. This shell 24 can be extended by a pipe or connected to such a pipe, which is another part of this conveyor 11 forms.

According to another feature, the hood 23 and the shell 24 interconnected, and even (and preferably) fixed in the same part as that in 4 can be seen, which is made in particular by deep drawing a metal plate. Such a part can be on the case 14 the exhaust element placed (and firmly connected, in particular by welding) and to a certain extent form a double wall.

It will be in 5 be noticed that the said shell 24 over a considerable part of the case 14 extends and a very large exchange area with the surrounding area of the exhaust element 3 having. Such an embodiment advantageously allows a very large exchange of heat between the interior of this channel 25 and the outer area, in particular the ambient air, which advantageously makes it possible to reduce the temperature of the exhaust gases provided, the engine 2 to supply. It will be observed that this channel 25 also from the internal volume of the exhaust element 3 may be thermally insulated, in particular by arranging a thermal insulation element in the interior of this exhaust element 3 , in particular in the area (or in the vicinity) of the section 26 the wall, which is the case 14 this exhaust element with this channel 25 divides, in particular between this wall section 26 and the means of environmental protection against pollution 30 which houses the housing inside.

In the 6 and 7 is an embodiment of an exhaust element 3 has been shown, which takes the form of a housing 14 assumes that there are two rooms inside 27 . 28 which extend in the longitudinal direction in the direction of the flow of the gases. These rooms 27 . 28 are preferably adjacent and can through a partition 29 be separated, which allows the two rooms 27 . 28 to separate in a tight way.

The one room 27 these rooms takes the cleaning elements 30 while the other room 28 at least in part the means 11 for conveying the gases in the direction of the engine 2 forms.

The space 28 that's the grant 11 also has a very large area for exchange with the surrounding area for a very large heat exchange between the interior of this space 28 and the outer area, which allows the temperature of the exhaust gases that are provided to the engine 2 to diminish It will be observed that this room 28 also from the other room 27 may be thermally insulated, in particular by the arrangement of a thermal insulation means in the interior of this other space 27 , in particular in the area (or in the vicinity) of the partition wall 29 which the two rooms 27 . 28 separates.

As in 7 you can see the rooms open up 27 . 28 in the area of the exit 31 of the exhaust element 3 , The middle 10 to collect the exhaust gases will now also and in the same case from the opening of the room 28 formed, in part, the means 11 for conveying the gases to the engine 2 Are defined.

It will be noticed that this room 28 can be extended by a pipe or connected to such a pipe, which is another part of this conveyor 11 forms.

Another feature of this embodiment is that the exhaust element 3 is preferably made by the joining of two half-shells, one of which is a first part of a room to protect the environment against pollution 27 defined while the other a second part of this space to protect the environment against pollution 27 and at least part (yes, even completeness) of the room 28 the means of transport 11 defines the gases.

In the 8th and 9 is an embodiment of an exhaust element 3 has been shown, which takes the form of a housing 14 on the one hand a shell 41 that inside a means 30 for cleaning the gases, and on the other hand and in the region of its output 31 a means 15 to reclosure of the shell 41 this case 14 includes.

This exhaust element 3 includes a means 11 to move the gases coming from a duct 42 is formed, the one end 43 has, in the area of this channel 42 to the housing 14 (in particular to the shell 41 ) of this exhaust element 3 is connected and of which this channel 42 extends, preferably, extending from this housing 14 away.

According to another feature, the end ends 43 this channel 42 and even the means of environmental protection against pollution 30 , in the area of the exit 31 of the exhaust element 3 , This channel 42 points now and in the area of this end 43 an opening 44 on, at least in part the means 10 to collect the exhaust gases forms.

Another feature is that the end 43 this channel 42 essentially parallel to the shell 41 (in particular cylindrical) of the housing 11 extends, on which this end 43 is set up and with that this end 43 is firmly connected, preferably by welding, brazing or the like.

Actually and as it is in the 8th and 9 is seen, the end will be 43 over the shell 41 this case 14 set over, in particular over a portion of the downstream end of this shell 41 , and is thus in the area of a merger zone 45 firmly connected.

For this purpose, it will be noted that the end 42 this channel 42 now and in the area of the merger zone 45 with the housing 14 a complementary shape to that of this case 14 has, in particular the shell to this 14 ,

As mentioned above, this housing includes 14 another closure 15 of the above type and closes again the said shell 41 in the area of the exit 31 of the exhaust element 3 ,

As in the 8th and 9 can be seen, includes this closing means 15 a means 46 for the recording of the end 43 of the above channel 42 , Such a receiving means 46 presents itself in the form of a saddle, inside of which on the one hand the end 43 of the canal 42 on the other hand a complementary shape to that of this end 43 having.

An additional feature is that this closure means 15 stuck with the end 43 this channel is connected, in particular by welding, brazing or the like.

Another in 9 feature shown is that the channel 42 at least in part and at least in the area of its end 43 on the one hand from a first longitudinal section 47 that's over the case 41 of the housing 14 of the exhaust element 3 is arranged, which has a complementary shape to the 41 has and firmly with this 41 and on the other hand from a second longitudinal section 48 is formed, which is associated with said first longitudinal portion, fixed to the latter and with the closing means 15 is connected and a complementary form to this 15 having.

According to one in the 8th and 9 illustrated preferred embodiment, the channel 42 on the one hand through an approach 49 , and on the other hand by one with this approach 49 , in particular by insertion and / or welding, firmly connected pipe 50 educated.

For this purpose, it is observed that the above end 43 from this channel 42 (having the above features) is now defined within the scope of this approach, especially near the end of this approach 49 ,

In particular, and as can be seen in the figures, the said approach 49 on the one hand from a first longitudinal section 47 and on the other hand from a second longitudinal section 48 formed, these longitudinal sections 47 . 48 represent the above features.

As mentioned above, the end is 43 of the canal 42 firmly with the shell 41 of the housing 14 as well as with the closing agent 15 this latter 14 connected.

For this purpose, it is observed that the merger between the end 43 of the canal 42 and the shell 41 of the housing 14 on the one hand in the area of the extreme end 43 of the canal 42 over a weld 51 that between the end 43 of the canal 42 (In particular in the region of the first longitudinal section 47 this end 43 of the canal 42 ) and the shell 41 of the housing inserted is, over at least a part (yes even, preferably over the entirety) of the peripheral portion of this shell 41 to which the end 43 of the canal 42 is attached, and on the other hand in the region of the longitudinal edge 52 of the end 43 of the canal 42 over the weld 51 that end between this 43 from channel 42 (In particular in the region of the first longitudinal section 47 this end 43 from channel 42 ) and the shell 41 of the housing 14 is inserted over at least a part (yes even and preferably over the entirety) of the longitudinal portion of this shell 41 to which the end 43 of the canal 42 is attached. The presence of these crossed welds 51 Advantageously, it allows a good tightness of the exhaust element 3 to guarantee.

Another feature of this channel 42 that's the grant 11 is that it has a defined shape and / or a cross section (triangular, square, rectangular, trapezoidal, round, oval, polygonal or otherwise) around such a channel 42 to the surroundings of the exhaust element 3 , in particular to a cell of the type mentioned above, adapt.

In the 10 and 11 is another embodiment of an exhaust element 3 has been shown, the inside cleaning agent 30 includes, which are in the form of a cleaning block.

This cleaning block has at least one channel 33 on, which is longitudinal with respect to the exhaust element 3 and according to the flow of the exhaust gases in this exhaust element 3 extends.

Such a channel 33 penetrates integrally and on both sides of this cleaning block and flows quite like the detergent 30 in the area of the exit 31 of the exhaust element 3 ,

It should be noted that such a channel 33 depending on the processing of the cleaning block after the production of the latter or by extrusion (extrusion) in the preparation of such a cleaning block can be performed.

However, and according to a preferred embodiment of the invention, the cleaning agents 30 formed by a juxtaposed manner a plurality of cleaning modules, which take the form of cleaning grid bars in a known manner, the joining of which allows the production of a filter with bars.

In the same case, the channel becomes 33 now formed by the absence of at least one such cleaning module inside such an assembly. For this purpose, it will be observed that the absence of such a module by removal of such a module after preparation of the detergent 30 can be ensured, even by joining the modules, by at least one such module is omitted to such a channel 33 define.

According to the invention, such a channel 33 either (at least in part) an agent 11 for conveying the gases to the engine 2 form or such a grant 11 take up.

For example, and according to a preferred embodiment, incorporated in the 10 and 11 is shown, if this channel 33 at least in part a means 11 forms for conveying the gases, this channel opens 33 like the detergents 30 , in the area of the exit 31 of the exhaust element 3 , In the same case, the means becomes 10 to collect the gases through the opening 32 this channel 33 in the area of the exit 31 this exhaust element 3 educated. It will be observed that this channel 33 now (in a dense way) in the area of its end, which is opposite to the opening, with a pipe 34 (the wall of the exhaust element 3 permeates) for conveying the gases to the engine 2 connected, and at least in part the funding 11 forms.

However, and according to another embodiment not shown, this channel takes 33 a subsidy 11 on, which is formed by a pipe or the like, at least in the interior of this channel 33 extends.

Such a pipe opens, just like the cleaning agent 30 , in the area of the exit 31 of the exhaust element 3 , In the same case, the means becomes 10 to collect the gases through the opening of this tube in the area of the outlet 31 this exhaust element 3 educated. For this purpose, it will be observed that this tube is tightly sealed with the detergents 30 , in particular in the region of this opening, is connected. This advantageously makes it possible for each reinstatement of the exhaust gases by the cleaning agents 30 and through the canal 33 , outside the pipe, to avoid.

As it is in the 10 and 11 can be seen, penetrates the pipe 34 (that means 11 to convey the gases) the wall of the exhaust element 3 , in the area or near the end of the detergent 30 , which is the end of the mouth of the detergent in the exit 31 of the exhaust element 3 is opposite to the engine 2 to reach.

In this case, the pipe can 34 outside the exhaust element also has a very large area for exchange with the surrounding area for a very large heat exchange between the interior of this tube 34 and the outer portion, which allows the temperature of the exhaust gases provided to the engine 2 to diminish

According to another feature of the exhaust element 3 according to the invention (and as described in part above) comprises this exhaust element 3 medium 35 to the cooling of the collected and to the engine 2 to ensure recirculated gases.

As described above, such coolants can 35 insist that the funding 11 has a large area for thermal exchange with the surrounding area, in particular with the atmospheric area.

Another embodiment, not shown, may be that these coolants 35 be formed by a heat exchanger connected to the means 11 linked to convey the exhaust gases. Such a heat exchanger may be in the form of a duct inside which circulates a coolant fluid (in particular water) and which is linked to a radiator which the vehicle contains.

According to a further feature of the invention, these coolants 35 still include funds to the agent 11 for conveying the gases and the cleaning agents 30 that the exhaust element 3 includes thermally isolating.

such embodiments have been described above and allow the cooling of these Exhaust gases in considerable Way to improve.

It's worth observing that from the engine 2 originating exhaust gases at least one exhaust element 3 that of at least one pollutant emission-reducing element 5 . 5 ' is formed, flow through.

This element of environmental protection against pollution 5 . 5 ' includes cleaning agents inside 30 which are susceptible to the temperature of these gases, shocks and / or aging, to produce particles which may take the form of pieces of ceramic, of fibers, fleece pieces or other. These particles are a danger to the compressor of the turbocompressor 8th but also for the engine 2 and its environment insofar as they are capable of causing these damages.

To fix this disadvantage, the exhaust element 3 according to the invention still means 36 to free the collected exhaust gases from at least a portion of the particles they contain.

As can be seen in the figures of the accompanying drawings, such means become 36 preferably of a defined particle trap depending on the in the region of the agent 10 for collecting these gases ( 3 and 4 ) or in the area of the agent 11 for transporting the gases ( 7 ) educated.

As mentioned above, and as can be seen in the accompanying figures, such a conveyor may 11 at least partly from a pipe ( 13 . 21 . 34 ) or a channel ( 25 . 39 . 42 ) whose shape and / or cross-section (triangular, square, rectangular, trapezoidal, round, oval, polygonal or otherwise) are defined to form such a tube ( 13 . 21 . 34 ) or such a channel ( 25 . 39 . 42 ) to the environment of the exhaust element 3 , in particular to a cell, which is set in the area of the motor vehicle, set and in the interior of said exhaust element, even the exhaust system 1 , to order.

Finally, and as mentioned above, the exhaust gases are in the range of an exhaust element 3 collected from a pollutant emission-reducing element 5 . 5 ' is formed.

Also, and according to a preferred embodiment of the invention, the exhaust element 3 in which area the collection of at least part of the exhaust gases is carried out by a chemical and / or physical element 5 for environmental protection against pollution of the type mentioned above (for example, a catalyst 6 , a particle filter 7 , Yes, even a device that combines catalyst and particulate filter).

However, and according to another embodiment, not shown, the exhaust element 3 in which area the collection of at least part of the exhaust gases is carried out by a pollutant emission-reducing element 5 ' to protect the environment against sound emission of the type mentioned above (for example a silencer). Such an element 5 ' To protect the environment against acoustic emissions is usually inside the exhaust system 1 downstream of a chemical and / or physical element for the protection of the environment from sound emission of the above-mentioned type, in the direction of the flow of the gases in the exhaust system 1 ,

The present invention also relates to an exhaust system 1 according to a second system according to the invention, the means 9 to provide of the motor 2 includes with exhaust gases.

According to the invention, these means include 9 on the one hand to provide the engine a means 10 to exhaust gases in the area (preferably at the exit 31 ) and / or downstream of an exhaust element 3 to collect that from an environmental protection element against pollution 5 . 5 ' is formed, and on the other hand a means 11 to the collected gases to the engine 2 to transport.

For this purpose, it should be observed that according to a first type of embodiment, the means 10 To collect exhaust gases in the area (especially at the exit 31 ) of an exhaust element 3 is set that the characteristics according to the exhaust elements 3 which have been the subject of the previous description (first system).

However, and according to a second type of execution, the in 12 is shown, the means 10 to collect the gases from a branch pipe 37 are formed, the downstream of the exhaust element 3 is executed, in the direction of the flow of gases in the exhaust system 1 , Such a pipe branch 37 is especially in the area of an exhaust pipe 38 Running away from this exhaust element 3 and in the exit of this latter 3 extends, in order to dissipate this exhaust gases to the atmosphere.

In fact, such a pipe branch 37 by the branching in the region of at least one in the discharge pipe 38 introduced opening of a tubular channel 39 or the like provided, at least in part, the means 11 for conveying the gases in the direction of the engine 2 forms.

An additional feature of the invention is that the conveyor 11 at least partly like a pipe ( 13 . 21 . 34 ) or as such a tubular channel ( 39 . 42 ), whose shape and / or cross-section (triangular, square, rectangular, trapezoidal, round, oval, polygonal or otherwise) are defined to the environment of the exhaust element 3 to be adapted, in particular to a cell which is set in the area of the motor vehicle and in the interior of said exhaust system 1 to order.

An additional feature of this exhaust system 1 is that they are downstream of the exhaust element 3 (Especially in the area of the discharge tube 17 ; 38 extending from this exhaust element and in the exit of this latter exhaust element 3 extends) a charging valve 40 for regulating the flow and / or pressure of the exhaust gases in the agent 11 for conveying these ( 1 ).

In fact, such a charging valve 40 from a back pressure valve, preferably of the type with ball valve or the like formed.

For this purpose, it should be noted that this charging valve 40 is intended to be controlled by control means (not shown) containing the vehicle.

In fact, such control is preferably ensured so that the exhaust gases are conveyed to the engine when it is in low load or at partial load while at full load of this engine 2 these gases are preferably discharged into the atmosphere.

Yet another feature is that this exhaust system 1 a turbo compressor 8th comprising a turbine, which is provided, on the one hand by the exhaust gases, the engine 2 leave to be driven, and on the other hand to suck the collected exhaust gases and to the engine 2 to transport.

The present invention also relates to a vehicle with an internal combustion engine 2 on the one hand to an exhaust system 1 the gases, the at least one exhaust element 3 includes, connected, and on the other hand with exhaust gases through supply means 9 is supplied according to a third system according to the invention.

According to the invention, these means include 9 to power the engine 2 also on the one hand a means 10 to exhaust gases in the area (and preferably at the exit) and / or downstream of an exhaust element 3 to collect the pollutant emission-reducing element 5 . 5 ' is formed, and on the other hand a means 11 to the collected gases to the engine 2 to transport.

According to a first embodiment of this vehicle corresponds to the exhaust element 3 comprising this vehicle, the first system described above, in particular as the means for collecting 10 and the funding 11 concerns.

According to a second embodiment of this vehicle corresponds to the exhaust system 1 comprising this vehicle, the second system described above, and in particular whatever the means for collecting 10 and the funding 11 concerns.

However, and according to another embodiment, the means 11 for conveying the collected gases at least partly in the region of an environmental element of the environment of the exhaust system 1 established. A preferred embodiment of the invention is that such a conveyor 11 integrated in such an environmental element.

To This purpose will be noted that such an environmental element can now be formed by a protective element (especially against the Heat, for example a heat shield), from a cladding element (In particular, a cladding element of the body floor), of a structural element (in particular an element of the body floor, an element of the body or other) that the vehicle or other includes.

A such embodiment allows Advantageously, the function of conveying the gases into an existing one To integrate environmental elements, in particular by modifying them becomes. Indeed Such a modification can simply be a volume in the area of such an element, in particular by making a double wall.

The present invention also relates to a method for supplying an internal combustion engine 2 with gas, which includes a vehicle and an exhaust system 1 is connected, the at least one exhaust element 3 includes, including a pollutant emission-reducing element 5 . 5 ' ,

This Method is particularly (but not limited) suitable, of at least one of the three systems described above.

In fact, this method consists in that at least part of the exhaust gases in the area (especially at the exit 31 ) and / or downstream of the pollutant emission reducing element 5 . 5 ' is collected and that the engine 2 supplied with these collected and purified exhaust gases.

For this purpose, it will be observed that these exhaust gases when in the supply 9 of the motor 2 to this latter 2 to supply with purified gases circulate, in fact, in the opposite direction to that of directly from this engine 2 originating gases circulate and in the said pollutant emission-reducing element 5 . 5 ' Arrive.

This procedure still consists in that before the supply of the engine 2 ensured with the collected exhaust gases, the cooling of these gases is ensured.

In fact, the cooling of the collected gases is ensured by regulating their circulation between the point of collection (means for collecting 10 ) of these gases and the engine 2 in a canal (pipe 13 . 21 . 34 , Channel 25 . 42 , tubular channel 39 ), which has a large area for thermal exchange with the surrounding area, in particular the atmospheric area.

A further embodiment is that the cooling of the collected gases is ensured by their circulation between the point to collect (means for collecting 10 ) of these gases and the engine 2 takes place in a channel which comprises a heat exchanger or which is linked to such a heat exchanger.

According to an additional feature of this procedure, before the supply of the engine 2 is ensured with the collected exhaust gases, these gases at least a part of the particles that they contain, free, in particular by ensuring the capture in a particulate trap 36 ,

In fact, such particles come in particular from the damage of the exhaust element 3 , in particular by the exhaust gases, and may be formed by ceramic, fiber, nonwoven pieces or other.

Another feature is that the circulation of gases in the direction of the engine 2 is ensured by placing on a loading valve 40 is acted that the exhaust system 1 includes, in particular downstream of a point for collecting (means for collecting 30 ) of these gases.

Another embodiment is to provide such circulation of gases to the engine 2 under the influence of one of the turbocompressor 9 To ensure negative pressure generated at the point to collect (means for collecting 10 ) of the gases is connected.

A special design is that the circulation of the exhaust gases to the engine 2 under the action of such from the turbocompressor 8th generated negative pressure and under the action of a said charging valve 40 guaranteed action.

As mentioned above, the process consists of exhaust gases in the range (especially and preferably at the exit) and / or downstream of an exhaust element 3 to collect that from a pollutant emission-reducing element 5 . 5 ' is formed.

In fact, and according to a first embodiment, this pollutant emission is decreasing element 5 of chemical and / or physical and in particular of a catalyst 6 and / or a particulate filter 7 or the like.

A second embodiment is that this pollutant emission-reducing element 5 ' in the Schallausführung is, in particular a muffler or the like.

In fact, such an element can protect the environment against sound emission 5 ' downstream of a pollutant emission-reducing element of chemical and / or physical nature, in the direction of flow of the gases in the exhaust system 1 ,

Summary:

The invention relates to a method for supplying gas to an internal combustion engine ( 2 ), which includes a vehicle and with an exhaust system ( 1 ), the at least one exhaust element ( 3 ) containing a pollutant emission reducing element ( 5 . 5 ' ), characterized in that it consists in that at least a part of the exhaust gases at and / or downstream of the pollutant emission-reducing element ( 5 . 5 ' ) and that the engine ( 2 ) is supplied with the collected pollutant emission and reduced exhaust gases. This invention also relates to an exhaust element ( 3 ), comprising means ( 9 ) for supplying an engine ( 2 ) with exhaust gases emitted by a means ( 10 ) for collecting exhaust gases at a pollutant emission reducing element ( 5 . 5 ' ) and by a means ( 11 ) for conveying the collected gases to the engine ( 2 ). The invention further relates to an exhaust system ( 1 ) and on a vehicle with an internal combustion engine ( 2 ) comprising means ( 9 ) for supplying the engine ( 2 ) with exhaust gases.

Claims (16)

Exhaust element ( 3 ) for an exhaust system ( 1 ) of a vehicle with an internal combustion engine ( 2 ) which comprises: a pollutant emission reducing element ( 5 . 5 ' ) comprising a housing ( 14 ), which comes from a shell ( 41 ) as well as a closing agent ( 15 ) which forms this envelope ( 41 ) in the area of the exit ( 31 ) of the pollutant emission-reducing element ( 5 . 5 ' ) closes again; - Medium ( 9 ) to the engine ( 2 ) with exhaust fumes, these supplies ( 9 ) on the one hand a means ( 10 ) in order to reduce exhaust emissions in the area of the pollutant emission-reducing element to environmental protection against pollution ( 5 . 5 ' ) and, on the other hand, a means ( 11 ) to collect the collected gases to the engine ( 2 ) to transport; - a channel ( 42 ), which provides the means of transport ( 11 ) forms the exhaust and one end ( 43 ), in whose area on the one hand this channel ( 42 ) to the housing ( 14 ) is connected, on the other hand in the region of the exit ( 31 ) of the exhaust element ( 3 ) and, on the other hand, an opening ( 44 ) which at least in part comprises the means ( 10 ) to collect the exhaust fumes; characterized in that the channel ( 42 ) at least in the region of its end ( 43 on the one hand from a first longitudinal section ( 47 ), which over the shell ( 41 ) of the housing ( 14 ) of the exhaust element ( 3 ), one to the shell ( 41 ) has complementary shape and fixed to the shell ( 41 ) and on the other hand by a second longitudinal section ( 48 ) formed with said first longitudinal section ( 47 ), firmly with this latter ( 47 ) as well as with the closing means ( 15 ) and one to this closing means ( 15 ) has complementary shape. Exhaust element ( 3 ) according to claim 1, characterized in that the end ( 43 ) of the channel ( 42 ) on the one hand in a substantially parallel manner to the envelope ( 41 ) of the housing ( 14 ) on which the end ( 43 ) and with which the end ( 43 ), preferably by welding, brazing or the like, and on the other hand in the area of the merger zone ( 45 ) one to the housing ( 14 ) has complementary shape, in particular one to the shell ( 41 ) of the housing ( 14 ) complementary shape. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that the channel ( 42 ) from a pipe ( 50 ) and an approach ( 49 ) is formed, with which the pipe ( 50 ), in the area of which the end ( 43 ) of this channel ( 42 ) and that of the first longitudinal section ( 47 ) as well as the second longitudinal section ( 48 ) of the channel ( 42 ) is formed. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that the merger between the end ( 43 ) of the channel ( 42 ) and the envelope ( 41 ) of the housing ( 14 ) on the one hand in the region of the outer end ( 43 ) of the channel ( 42 ) via a weld ( 51 ), between the end ( 43 ) of the channel ( 42 ) and the envelope ( 41 ) of the housing ( 14 ) is arranged over at least a part of the peripheral portion of the shell ( 41 ) to which the end ( 43 ) of the channel ( 42 ) is placed, and on the other hand in the region of the longitudinal edge ( 52 ) of the end ( 43 ) of the channel ( 42 ) over the weld ( 51 ), between the end ( 43 ) of the channel ( 42 ) and the envelope ( 41 ) of the housing ( 14 ) is arranged over at least a part of the longitudinal portion of the envelope ( 41 ), on the the end ( 43 ) of the channel ( 42 ) is attached. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that the closing means ( 15 ) a means ( 46 ) for the recording of the end ( 43 ) of the channel ( 42 ), with which the closing means ( 15 ), in particular by welding, brazing or the like. Exhaust element ( 3 ) according to claim 5, characterized in that the means ( 46 ) to receive the end ( 43 ) of the channel ( 42 ) in the form of a saddle with complementary shape to the end ( 43 ) of the channel ( 42 ), wherein the end ( 43 ) is arranged in the interior. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that it comprises means ( 35 ) for cooling the collected and to the engine ( 2 ) comprises recirculated exhaust gases, these refrigerants ( 35 ) that the grant ( 11 ) has a large area for thermal exchange with the surrounding area, in particular with the atmospheric area. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that the means ( 11 ) for conveying the exhaust gases at least in part as a channel ( 42 ) is formed whose shape and / or cross section are defined to the channel ( 42 ) to the surroundings of the exhaust element ( 3 ), in particular to a cell, which is set in the area of the motor vehicle to adapt and in the interior of this exhaust element ( 3 ) is arranged. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that it comprises means ( 36 ) in order to free the collected exhaust gases from at least part of the particles containing them, these means ( 36 ) are formed by at least one particle trap, which in the region of the agent ( 10 ) for collecting these exhaust gases or the agent ( 11 ) is defined for conveying the exhaust gases. Exhaust element ( 3 ) according to one of the preceding claims, characterized in that the pollutant emission-reducing element of a chemical and / or physical pollutant emission-reducing element ( 5 ) as a catalyst ( 6 ), a particle filter ( 7 ) or a device combining catalyst and particulate filter is formed. Exhaust element ( 3 ) according to one of claims 1 to 9, characterized in that the pollutant emission-reducing element of an element for the protection of the environment against acoustic emission ( 5 ' ), like a silencer. Exhaust exhaust system ( 1 ) for vehicle with internal combustion engine ( 2 ) and comprising at least one exhaust element ( 3 ) as well as funds ( 9 ) to the engine ( 2 ) with exhaust fumes, these means of supply ( 9 ) on the one hand a means ( 10 ) to the exhaust gases in the region and / or downstream of an exhaust element ( 3 ), the pollutant emission-reducing element ( 5 . 5 ' ), and on the other hand a means ( 11 ) to collect the collected exhaust gases to the engine ( 2 ), characterized in that the exhaust element ( 3 ) corresponds to one of claims 1 to 11. Exhaust system ( 1 ) according to claim 12, characterized in that it is located downstream of the exhaust element ( 3 ) a loading valve ( 40 ) for regulating the flow and / or pressure of the exhaust gases in the medium ( 11 ) for carrying them. Exhaust system ( 1 ) according to claim 12, characterized in that it comprises a turbo-compressor ( 8th ), which comprises a turbine provided for, on the one hand, the exhaust gases exiting the engine ( 2 ) to be driven, and on the other hand to suck the collected exhaust fumes and to the engine ( 2 ) to transport. Vehicle with combustion engine ( 2 ), which: - to an exhaust gas system ( 1 ) with at least one exhaust element ( 3 ), - with exhaust gases from the supply means ( 9 ), on the one hand means ( 10 ) to the exhaust gases in the region and / or downstream of the exhaust element ( 3 ) and, on the other hand, means ( 11 ) to collect the collected exhaust gases to the engine ( 2 ) to transport; - wherein the vehicle is characterized in that the exhaust element ( 3 ) corresponds to one of claims 1 to 11. Vehicle with combustion engine ( 2 ) according to claim 15, characterized in that the means ( 11 ) for conveying the collected gases at least partially in the region of an environmental element of the exhaust system ( 1 ) and is formed by a protective element, by a cladding element or by a structural element of the vehicle.