DE10222917A1 - Charged internal combustion engine has rotary valve as exhaust gas feedback control element, engine braking shut-off element, waste gate element, control element for exhaust gas to feedback turbines - Google Patents

Abstract

The charged internal combustion engine (1) has a control element for an exhaust gas feedback device, a shut-off element for an engine braking device, a waste gate element for exhaust gas blow-out and a control element for varying the exhaust gas applied to the feedback turbines (2) implemented as a rotary valve (10). The rotary valve has a housing with four connection channels (13-15) and a plug (22) rotatably accommodated in its interior.

Description

The invention relates to a supercharged internal combustion engine with features accordingly the preamble of claim 1.

The invention is based on the applicant's series internal combustion engines. They are EGR control unit, the wastegate for exhaust gas blow-off and a throttle valve as Shut-off device of the engine brake device in each case as separate components in the exhaust system Internal combustion engine installed and each equipped with its own servomotor Service. Apart from the large space requirement of these organs, they also provide one represents significant cost factor. For various applications of the internal combustion engine In addition to the regulation via the wastegate-side blow-off, the demand for a independent controllability of the exhaust gas turbocharger, which z. B. with such a variable turbine geometry (VTG) was achieved. Exhaust gas turbochargers with VTG are including regulation and control equipment much more expensive than unregulated Exhaust gas turbocharger, so that for this reason alone they are usually not used in series production.

In contrast, it is an object of the invention to provide an internal combustion engine in which exhaust gas recirculation (EGR), engine braking, exhaust gas bleeding and Power regulations of the ATL turbine can be represented with means that take up considerably less space than before organs intended for this need and also cause less expense.

This object is according to the invention in an internal combustion engine of the generic type solved that the EGR control body, the shut-off of the Engine brake device, the wastegate element for exhaust gas blow-off and a control element for a quantity Different exhaust gas emissions from the ATL turbine implemented in a rotary valve are.

Advantageous configurations and details of the rotary valve according to the invention are in the Subclaims specified.

• a) eine Drehzahl- und Leistungsregelung der ATL-Turbine aufgrund steuerbarer Abgasmengenzuteilung und/oder
• b) einer Abgasabblasung mit steuerbarer Abblasemenge, und/oder
• c) eine AGR mit Regelung der ableitbaren AGR-Menge zwischen Null und einem gewünschtem Maximum, und/oder
• d) eine geregelte Motorbremsung aufgrund einer Zusteuerung des Einlasskanals mit der Möglichkeit einer variablen Einstellung auf unterschiedlich große Minimalabgasdurchlassquerschnitte

gegeben ist. The rotary valve has a housing with four connecting channels opening into a round interior and a plug which is rotatably received in the interior. The exhaust tract of the internal combustion engine is connected to the input channel of the rotary valve, the ATL turbine is connected to the first output channel of the rotary valve directly or via a connecting channel, a bypass line for blow-off is connected to the second output channel of the rotary valve and the EGR line to the third output channel of the rotary valve. The plug of the rotary slide valve has an internal passage channel with, for example, three differently sized inlet or outlet cross-sections, which are fixed in its circumference and between two of which a control surface area extends circumferentially on the plug. As an alternative to this, it is possible to provide two stationary and one movable, separately controllable control surface area distributed around the circumference of the plug, which is used, for example, to regulate the EGR. The four connecting channels of the rotary valve open out into its interior on the circumferential side, and the three control surface areas and the three inlet and outlet cross sections of the through-channel are provided on the circumference of the plug in such a way that, depending on the rotation or setting of the plug, which is caused by a Control device is effected

• a) a speed and power control of the ATL turbine due to controllable exhaust gas allocation and / or
• b) an exhaust gas blow-off with controllable blow-off volume, and / or
• c) an EGR with regulation of the derivable EGR amount between zero and a desired maximum, and / or
• d) controlled engine braking due to control of the intake duct with the possibility of a variable adjustment to differently sized minimum exhaust gas passage cross sections

given is.

All four connecting channels of the rotary slide valve preferably open with a rectangular one Cross-section in its interior and the parallel longitudinal edges of each rectangular cross-section extend parallel to the axis of rotation of the chick. Old four connection channels can be used of the rotary valve on the mouth side each have an equally wide and equally long rectangular Cross-section, possibly also rectangular cross-sections of different lengths and widths to have. The positions and sizes of the mouth cross sections of the inlet and outlet channels of the two exemplary embodiments and the associated arrangements of the input or Outlet cross sections of the passage control channel on the plug are in claims 8 to 10 and 12 specified. Different types of storage for the chick and drives for this are in the Claims 11, 13 and 14 indicated.

Below is the solution according to the invention based on two in the drawing illustrated embodiments described in more detail. The drawing shows:

Fig. 1 schematically shows a two-stage supercharged internal combustion engine having the rotary valve according to the invention,

Fig. 2A schematically shows a first embodiment of the rotary valve according to the invention,

FIG. 2B, the rotary valve of Fig. 2A with angle data;

Fig. 3 a section through the rotary valve of Fig. 2 taken along the section line III-III,

FIGS. 4 to 18 are each a control positions of the plug in the rotary valve of Fig represented by 15 different exemplary. 2,

19A schematically shows a second embodiment of the rotary valve according to the invention.,

FIG. 19B the rotary valve of FIG. 19 with angle data;

Fig. 20 is a section through the rotary valve of Fig. 19A taken along section line AA, and

Fig. 21 is a section through the rotary valve of Fig. 19A taken along section line BB.

In Fig. 1, a supercharged engine 1 is shown, which is for example is a diesel engine of a vehicle and the exhaust-gas turbocharger is denoted ATL. Its turbine 2 can be supplied with exhaust gas from the exhaust tract of the internal combustion engine 1 and its compressor 4 delivers compressed charge air via a feed line 5 into the charge air manifold 6 of the internal combustion engine 1 . This internal combustion engine 1 has an engine brake device with an engine-internal brake device, for example one such as that protected by EP patent 0736672, and a shut-off element in the exhaust tract 3 , with which it can be at least almost completely shut off during an engine brake operating phase for a build-up of the exhaust gas.

The rotary valve according to the invention is designated 10. This has a housing 11 with four connecting channels 13 , 14 , 15 , 16 opening into a round interior 12 . The exhaust tract 3 of the internal combustion engine 1 is connected to the input channel 13 of the rotary valve 10 . The ATL turbine 2 is connected to the first output channel 14 of the rotary valve 10 either directly or via a connecting channel 17 . At the second output channel 15 is an ATL-turbine 2 immediate and output connected 18 debouching bypass line 19 in one of the ATL turbine 2 subsequent exhaust pipe. An EGR line 20 is connected to the third output channel 16 , which leads via an EGR cooler 21 and opens into the charge air collecting line 6 . EGR is the abbreviation for exhaust gas recirculation.

The rotary valve 10 according to the invention combines the functions of an EGR control element, the shut-off element of the engine brake device, a wastegate element for exhaust gas blow-off and a control element for a different amount of exhaust gas from the ATL turbine 2 . A plug 22 rotatably received in the interior 12 of the rotary valve 10 forms a distributor, regulating and control device as well as a shut-off device for the exhaust gas fed via the inlet duct 13 into its passage duct 23 and directs it specifically into one, two or all three of the three outlet ducts 14 , 15 , 16 and via this to the connected organs 2 , 19 , 20 .

In the examples shown, all four connection channels 13 , 14 , 15 , 16 , each with the same width and length of rectangular cross section, open into the interior 12 of the rotary valve 10 . However, these rectangular cross sections could also be of different lengths and widths. The two longitudinal edges of each rectangular cross-section extend parallel to the axis of rotation 27 of the plug 22 .

• a) eine Leistungs-/Drehzahlregelung der ATL-Turbine aufgrund steuerbarer Abgasmengenzuteilung und/oder
• b) einer Abgasabblasung mit steuerbarer Abgasabblasemenge, und/oder
• c) eine AGR mit Regelung der ableitbaren AGR-Menge zwischen Null und einem gewünschtem Maximum, und/oder
• d) eine geregelte Motorbremsung aufgrund einer Zusteuerung des Einlasskanals mit der Möglichkeit einer variablen Einstellung auf unterschiedlich große Minimalabgasdurchlassquerschnitte

gegeben ist. The four connecting channels 13, 14, 15, 16 of the rotary valve 10 open circumferentially in such a manner distributed in the interior space 12 and the rotatable therein chicks 22 is adjustable with its control surface areas and its through-flow channel with its three inputs and outlet cross in a variety of positions, such that

• a) a power / speed control of the ATL turbine based on controllable exhaust gas allocation and / or
• b) an exhaust gas discharge with controllable exhaust gas discharge amount, and / or
• c) an EGR with regulation of the derivable EGR amount between zero and a desired maximum, and / or
• d) controlled engine braking due to control of the intake duct with the possibility of a variable adjustment to differently sized minimum exhaust gas passage cross sections

given is.

Below is the different details of the two variants discussed in more detail.

• 1. zwischen erstem und zweitem Ein- bzw. Auslassquerschnitt 23/1, 23/2 erstreckende erste Steuerflächenbereich 24 ein Umfangssegment von ca. 35°,
  • - zwischen zweitem und drittem Ein- bzw. Auslassquerschnitt 23/2, 23/3 erstreckende zweite Steuerflächenbereich 25 ein Umfangssegment von ca. 60° und
  • - zwischen drittem und erstem Ein- bzw. Auslassquerschnitt 23/3, 23/1 erstreckende dritte Steuerflächenbereich 26 ein Umfangssegment von ca. 75°.

In the case of the rotary valve 10 according to Figs. 2 to 18 has the chicks 22 an internal passageway 23 having three different sizes, circumferentially distributed inlet or outlet cross 23/1, 23/2 23/3 and circumferentially three stationary cam portions 24, 25, 26, wherein the first cam portion 24 between the first and second inlet and outlet section 23/1 and 23/2, the second cam portion 25 between the second and third inlet or outlet cross 23/2 and 23/3 and the third control surface area 26 extends between the first and third inputs and outlet section 23/1 and 23/3 system. The three cam portions 24, 25, 26 are as well as the three inputs or outlet cross 23/1, 23/2, 23 3, where / the chicks 22 in a particular location and size, to then, as well as on the position of the Channels 13 , 14 , 15 , 16 has been discussed in more detail with the aid of FIG. 2B. The position of the channels 13 , 14 , 15 , 16 is as follows: the first outlet channel 14 opens with its mouth cross section by an angle α of approximately + 137 °, the second outlet channel 15 opens with its mouth cross section by an angle β of approximately + 98 ° and the third outlet channel 16 opens with its mouth cross-section offset by an angle γ of approximately -108 ° - in each case with respect to the respective channel center - in relation to the mouth cross-section of the inlet channel 13 into the interior 12 of the rotary valve 10 . Further Chick rotary valve 22 are given in detail on the following conditions: The first, smallest inlet and outlet section 23/1 of the passage control channel 23 extends over a circumferential section of 32 °. The second, medium-sized inlet and outlet cross 23/2 extends over a circumferential portion of approximately 48 °. The third largest inlet and outlet section 23/3 of passage control channel 23 extends over a circumferential portion of approximately 110 °. Furthermore, it overlaps on the circumference of the plug 22

• 1 between the first and second inlet and outlet section 23/1, 23/2 extending first cam portion 24, a circumferential segment of approximately 35 °,
  • - between the second and third inlet or outlet cross 23/2, 23/3 extending second cam portion 25, a circumferential segment of approximately 60 ° and
  • - extending between the third and first input or outlet cross 23/3, 23/1 third cam portion 26, a circumferential segment of approximately 75 °.

In addition, each of the four connection channels 13 , 14 , 15 , 16 with the width of its rectangular cross section given in the mouth region covers an arc segment of approximately 30 ° on a circular-cylindrical peripheral surface section of the interior 12 .

In the example according to FIG. 2A, the plug 22 consists of two coaxial circular disks 28 , 29 spaced parallel to one another, between which three spacer posts 30 , 31 , 32 extend, on the outer circumference of which one of the three control surface areas 24 , 25 , 26 is provided , The interior 12 of the rotary valve 10 is accessible from one side of the housing 11 in such a way that the plug 22 can be installed. After installation of the plug 22 , the interior 12 can be closed by a cover 33 forming part of the housing 11 and centered in it. The chicks 22 is added with its circular discs 28, 29 with little radial play in the interior space 12 in the housing 11 and rotatably supported for rotation about an axis 34/1, 34/2 33rd The axis is with a part, e.g. B. the part 34/2 extends through the cover 33 passes from the housing 11 and (not shown) therein to an appropriate electric or hydraulic servo motor connected. This receives its setting commands for a corresponding setting or adjustment of the plug 22 from an electronic control unit (also not shown) which works microprocessor-based on the basis of stored motor and / or other operating data as well as supplied actual data values. In particular, when the internal combustion engine forms the drive unit of a vehicle, data specific to driving operation are also used to set the plug 22 .

In Figs. 4 to 18 of Example 2A fifteen different positions of the plug 22 are shown in FIG from the rotary slide valve 10. Shown. Fig. 4 shows the presumed O-position of the plug 22, from this in one (+) or other (-) direction by the servomotor is adjustable. In this O-position of the plug 22 , there is no EGR, and the exhaust gas fed into the passage duct 23 via the inlet duct 13 is supplied to the ATL turbine 2 via the second and third outlet ducts 15 , 16 and the completely open first outlet duct 14 .

Fig. 5 shows the plug 22 in rotational position +1. When the second outlet channel 15 is shut off, the exhaust gas fed into the passage channel 23 via the inlet channel 13 is supplied partly to the first outlet channel 14 and partly to the third outlet channel 16 . That is, a partial exhaust gas quantity serves an EGR with a medium recirculation rate and the remaining partial exhaust gas quantity goes to the ATL turbine 2 .

Fig. 6 shows the plug 22 in rotational position +2. In this case, the exhaust gas fed into the passage channel 23 via the inlet channel 13 is supplied to the three outlet channels 14 , 15 , 16 in three different partial quantities. The largest partial exhaust gas quantity is used for an EGR with a high recirculation rate, the second partial exhaust gas quantity is blown off and the third partial exhaust gas quantity is fed to the ATL turbine 2 , so that the latter is operated at a low speed and low power.

Fig. 7 shows the chick 22 in the rotational position +3. When the first outlet channel 14 is shut off, the exhaust gas fed into the passage channel 23 via the inlet channel 13 is supplied to the second outlet channel 15 and third outlet channel 16 in two different partial quantities. The first, largest subset serves an EGR with a very high recirculation rate. The second, smaller part of the exhaust gas is blown off.

Fig. 8 shows the chick 22 in the twisted position +4. This is an engine braking position of the plug 22 , in which the inlet cross-section of the inlet duct 13 is largely, approximately 90-95%, blocked off by the control surface area 26 and the minimally continuous amount of exhaust gas fed into the passage duct 23 is , to a small extent, the third outlet duct 16 is blown off as EGR and to a greater extent via the second outlet duct 15 .

Fig. 9 shows the chick 22 in position +5. This is a further engine brake position in which the mouth cross section of the inlet channel 13 is also almost completely, approximately 90%, blocked off by the control surface section 26 . The small amount of exhaust gas that is let through and fed into the passage duct 23 is distributed over all three completely released outlet ducts 14 , 15 , 16 . This is important for the ATL turbine 2 , because it is kept running at low speed and therefore does not have to be accelerated from zero after the engine braking process has ended.

Fig. 10 shows the plug 22 in position +6. In this position, the inlet duct 13 is fully permeable and the exhaust gas fed into the passage duct 23 is discharged in different partial quantities via all three outlet ducts 14 , 15 , 16 . A small part of the exhaust gas serves an EGR with a low recirculation rate. An average partial exhaust gas quantity is blown off via the partially opened second outlet duct 15 . The largest partial exhaust gas quantity goes to the ATL turbine 2 via the fully opened first exhaust duct 14 .

Fig. 11 shows the plug 22 in position +7. This is a further possible engine brake position in which the mouth cross section of the inlet channel 13 through the control surface section 24 is largely, for. B. is blocked to 80 to 90%. The small amount of exhaust gas flowing through the through-channel 23 is fed to the ATL turbine 2 via the completely open first exhaust channel 14 when the second exhaust channel 15 and the third exhaust channel 16 are shut off, as a result of which the ATL turbine 2 is kept running at minimum speed and is started up more quickly after the engine braking process has ended can.

Fig. 12 shows the plug 22 in position -1. When the third outlet channel 16 is shut off, the exhaust gas fed into the passage channel 23 via the completely open inlet channel 13 is discharged approximately equally via the first outlet channel 14 and the second outlet channel 15 , that is to say that part of the exhaust gas is blown off and the other part of the exhaust gas is fed to the ATL turbine 2 , so that it is set to a corresponding speed and power.

Fig. 13 shows the plug 22 in position -2. Here, too, the third outlet channel 16 is blocked. The exhaust gas fed into the passage channel 23 via the completely open inlet channel 13 is discharged in different partial quantities via the first outlet channel 14 and the second outlet channel 15 . Position -2 compared to position -1 is a position in which the speed and power of the ATL turbine 2 is set to a lower value, with a large part of the exhaust gas being blown off and on via the fully open second outlet duct 15 only a small part of the exhaust gas reaches the ATL turbine 2 via the largely exhausted, approximately 80%, first outlet duct 14 .

Fig. 14 shows the plug 22 in position -3. This is a further possible engine brake position in which the outlet cross section of the inlet duct 13 is largely, approximately 90%, blocked off by the control surface region 25 and the minimally let-through exhaust gas fed into the passage duct 23 via all three outlet ducts 14 , 15 , 16 is dissipated. This means that in this case too, the ATL turbine 2 remains operated at a basic speed, which favors its renewed acceleration after the engine braking process has ended.

Fig. 15 shows the plug 22 in position -4. Here, too, there is another possible engine brake position in which the mouth cross section of the inlet channel 13 is largely blocked off by the control surface area 25 , approximately 90%. The minimally let-through exhaust gas fed into the passage duct 23 is also discharged here via all three outlet ducts 14 , 15 , 16 , but the partial exhaust gas quantity which is fed to the ATL turbine 2 and keeps it at a low speed is smaller than in chicks Position -3.

Fig. 16 shows the plug 22 in position -5. In this case, the exhaust gas fed into the passage channel 23 via the fully open inlet channel 13 is blown off partly via the second outlet channel 15 when the first outlet channel 14 is completely shut off, and is discharged as EGR via the third outlet channel 16 . This results in an EGR with a very high recirculation rate when the third outlet channel 16 is fully opened.

Fig. 17 shows the chick 22 in position -6. This in turn is a possible engine brake position in which the outlet cross section of the inlet duct 13 is largely, approximately 80%, blocked off by the control surface section 24 and the minimally let-through exhaust gas fed into the passage duct 23 with the second outlet duct 15 fully blocked off partly via the first outlet duct 14 , in part via the third outlet duct 16 . That is, here too, the ATL turbine 2 is kept at a basic speed, which favors its acceleration after an engine braking process has ended.

Figure 18 shows the chick 22 in position -7. The situation is similar to that in position -6, but the opening cross section of the inlet channel 13 through the control surface section 24 is even stronger, 90-95% blocked off. That is to say, the ATL turbine 2 here receives the largest proportion of the exhaust gas which is minimally let into and passed through the passage 23 and is therefore operated at a higher basic speed than in position -6.

The switching positions of the plug 22 shown in FIGS. 4 to 18 and explained above are representative of the twist spectrum. Further sensible settings of the plug 22 on both sides of each of the positions shown are possible, so that occasionally a different exhaust gas distribution and / or engine braking effect results.

Details of the exemplary embodiment according to FIG. 19A are discussed in more detail below.

In this rotary valve 10 , too, the four connecting channels 13 , 14 , 15 , 16 open out into the interior 12 with rectangular cross sections. The rectangular cross sections are all the same length and the same width here and their longitudinal edges run parallel to the axis of rotation of the plug 22 . Here, 19B is the position of the opening cross-sections, as shown in FIG well visible, given as follows:. The first exhaust port 14 opens with its mouth cross-section by an angle α of approximately 100 °, the second outlet channel 15 opens with its mouth cross-section by an angle β of approximately -50 ° and the third outlet channel 16 opens with its mouth cross-section offset by an angle γ of approximately + 125 ° - in each case relative to the respective channel center - in relation to the mouth cross-section of the inlet channel 13 into the interior 12 of the rotary valve 10 . In addition, each of the four connection channels 13 , 14 , 15 , 16 with the width of its rectangular cross section given in the mouth region covers an arc segment of approximately 20 ° on a circular-cylindrical peripheral surface section of the interior 12 . The rotary valve plug 22 also has an internal passageway 23 with three circumferentially spaced inlet and outlet cross 23/1 ', 23/2', 23/3 'of equal here size of approximately 75 ° and the circumferential side two stationary cam portions 24 ', 26 ' and a movable, separately adjustable control surface area 25 '. Here, the first extending, fixed on Chick 22 arranged cam portion 24 'between the first and second inlet and outlet section 23/1' and 23/2 'through an angle of approximately 30 °. The other end of the input respectively outlet cross 23/2 'limited by a stop post 35, on the opposite side a about the axis of the plug 22 in this rotatable and radially outside the second cam portion 25' exhibiting arc segment is supported in its basic position 36th The arch segment 36 covers an angle of approx. 30 ° and in contact with the stop post 35 together with this an angle of approx. 60 °. The third, fixed on Chick 22 arranged cam portion 26 'extends between the third inlet and outlet cross 23/3' and the first inlet and outlet section 23/1 'and covers an angle of approximately 50 °. In this example, the plug 22 also consists of two coaxial circular disks 37 , 38 spaced parallel to one another, between which two spacer posts 39 , 40 and the stop post 35 are each firmly connected and the arc segment 36 extends rotatably. The control surface area 24 'is provided on the outer circumference of the spacer post 39 . The control surface region 26 'is provided on the outer circumference of the spacer post 40 . The control surface region 25 'is provided on the outer circumference of the movable arc segment 36 . The arc segment 36 is fixedly supported on a drive shaft 42 via a strut 41 , which in turn is itself rotatably mounted on the one hand in the housing 11 , there a bearing eye 43 of the housing side wall, on the other hand in the circular disk 37 and through the circular disk 38 , which supports it from the housing 11 is extended out. An electric or hydraulic servomotor (not shown) is connected to the outer free section of the drive axle 42 , by means of which the arc segment 36 can be pivoted back and forth within the plug 22 between the posts 35 and 40 . On the side opposite the circular disk 38 , the housing 11 is also closed here by a cover 33 centered in the round interior 12 . After removal of the same, the preassembled plug 22 can be installed in the interior 12, which is now open from one side. After reattaching the cover 33 to the rest of the housing 11 , the circular disc 37 is mounted in the cover 33 with a drive pin 44 . At the outer free end of the drive pin 44 a further electric or hydraulic servomotor (also not shown) is connected, which ensures the rotation and adjustment of the plug 22 . Both servomotors of this rotary valve 10 can also be operated here by commands from an electronic, computer-assisted control unit.

The controllability of this rotary slide valve 10 is somewhat higher here than that of FIG. 2A, because with the control surface area 25 'on the arc segment 36 an independent control of the EGR between zero and maximum can be carried out independently of the other control positions of the plug 22 . The function of this rotary valve 10 is discussed in more detail below on the basis of various position considerations of the plug 22 .

FIG. 19A shows the plug 22 in position assumed O, 36 rests in the well, the arc segment on the stop post 35 and the cam portion 24 'is exactly between inlet channel 13 and the second exhaust port 15 is located at the post. 39

From this O position, the plug 22 can be rotated clockwise into an engine braking position until the mouth cross section of the inlet channel 13 is completely or largely, for example, with the control surface area 24 'on the post 39 . B. is controlled to 90 to 95%. At the same time, the opening cross section of the third outlet channel 16 is controlled with the control surface area 26 ′ on the post 40 , so that little or no EGR is possible. The amount of exhaust gas which is slightly let through at the inlet duct 13 and fed into the passage duct 23 is partly blown off and partly fed to the ATL turbine 2 via the two open outlet ducts 14 , 15 , as a result of which it remains at the basic speed and is therefore easier to accelerate after the engine braking process has ended.

By turning the plug 22 counterclockwise from this engine braking position back to the O position, engine braking can be ended and the opening cross section of the third outlet channel 16 is also released again by the control surface area 26 '.

By turning the plug 22 counter-clockwise from the O position, the opening cross section of the second outlet channel 15 is initially increasingly controlled with the control surface area 24 '. The exhaust gas entering the passage duct 23 via the completely open inlet duct 13 is thus partly supplied to the turbine 2 , partly blown off, in the sense of a corresponding speed and power control of the turbine 2 . In addition, with the control surface area 25 ′ of the separately adjustable arc segment 36, EGR can be prevented or, depending on the degree of actuation of the mouth cross section of the third outlet channel 16 , can be permitted with a different return rate.

As soon as the opening cross section of the second exhaust passage is fully fed controls 15 by the cam portion 24 'the post 39, which is through the still open inlet duct 13 is fed into the passage channel 23, the exhaust gas only the ATL-turbine 2, and optionally also an EGR via the third exhaust port 16 supplied due to appropriate setting of the control surface area 25 '. This plug position is that for the maximum output of the ATL turbine 2 .

When the plug 22 is rotated further counterclockwise from the aforementioned position, the control surface area 24 ′ on the post 39 increases and increases the second outlet channel 15 and at the same time the first outlet channel 14 is gradually closed. This means that the exhaust gas fed into the passage duct 23 via the inlet duct 13 is partly blown off and partly fed to the ATL turbine 2 , as a result of which the latter is operated in the medium speed range with a smaller power than the maximum. In this position of the plug 22 as well , EGR can either be prevented by appropriate adjustment of the control surface area 25 'on the arc segment 36 or is permitted with the return rate set as desired.

As soon as the opening cross section of the first exhaust passage is fully fed controls 14 by the cam portion 24 'the post 39, the second exhaust passage 15 is fully released and the still open inlet channel 13 into the passage channel 23 is fed exhaust gas is either completely blown off or partly a by EGR is supplied via the third outlet duct 16 on the basis of a corresponding setting of the control surface region 25 ′ on the arc segment 36 . The position described here is the counter-clockwise control end position from which the plug 22 can then be turned back clockwise into the other settings as described above.

Claims (14)

1. Supercharged internal combustion engine, in particular diesel engine of a vehicle, with an exhaust gas turbocharger (ATL), the turbine ( 2 ) of which can be supplied with exhaust gas from the exhaust tract ( 3 ) of the internal combustion engine ( 1 ) and the compressor ( 4 ) of charge air into the charge air manifold ( 6 ) supplies the internal combustion engine ( 1 ), furthermore with a device for exhaust gas recirculation (EGR), which comprises an EGR line ( 20 ) passing through an EGR cooler ( 21 ) between the exhaust tract ( 3 ) and charge air manifold ( 6 ) and an EGR control element , with which the EGR can be controlled in terms of time and quantity, also with an engine brake device which has an engine-internal brake device and a shut-off element in the exhaust tract ( 3 ) for its at least almost complete shut-off during engine brake operation, and with one the ATL turbine ( 2 ) immediate bypass line ( 19 ) which branches off from a wastegate arranged in the exhaust tract ( 3 ), characterized in that the EGR control organ n, the shut-off device of the engine brake device, the wastegate member for exhaust gas blow-off and a control member for a different amount of exhaust gas from the ATL turbine ( 2 ) are realized in a rotary valve ( 10 ). 2. Internal combustion engine according to claim 1, characterized in that the rotary slide valve ( 10 ) has a housing ( 11 ) with four connecting ducts ( 13 , 14 , 15 , 16 ) opening out into a round interior ( 12 ) and one which is rotatably accommodated in the interior ( 12 ) Chick ( 22 ), wherein - At the input channel ( 13 ) of the exhaust tract ( 3 ) of the internal combustion engine ( 1 ), - The first output channel ( 14 ) directly or via a connecting channel ( 17 ) the ATL turbine ( 2 ), - On the second output channel ( 15 ), the bypass line ( 19 ) and - The EGR line ( 20 ) is connected to the third output channel ( 16 ). 3. Internal combustion engine according to claim 2, characterized in that the plug ( 22 ) has three control surface areas ( 24 , 25 , 26 ) arranged on it on the circumference and internally a passage channel ( 23 ) with three differently sized inlet and outlet cross sections distributed around the circumference (23/1, 23/2, 23/3), one of which has an outer control surface between two areas is arranged in each case. 4. Internal combustion engine according to claim 2, characterized in that the plug ( 22 ) on the circumference has two fixedly arranged control surface areas ( 24 ', 26 ') and a movable, separately adjustable control surface area ( 25 '), that the plug ( 22 ) also a passage channel 23 with three circumferentially spaced inlet and outlet cross (23/1 ', 23/2', 23/3 '), wherein the first inlet and outlet section (23/1') between the first and third cam portion (24 ', 26'), the second inlet and outlet section (23/2 ') between the first control surface area (24') and a stop post (35) for a rotatably mounted, the movable control surface area (25 ') exhibiting arc segment (36 ) and the third inlet or outlet region is (/ ') between the arc segment (36) and the third control surface area (26' 23, where 3). 5. Internal combustion engine according to one of claims 3 and 4, characterized in that the four connecting channels ( 13 , 14 , 15 , 16 ) of the rotary slide valve ( 10 ) open out in such a circumferential manner in its interior ( 12 ) that the three control surface areas ( 24 , 25, 26; 24 ', 25', 26 ') in such a way (22) placed on chick and are with or on this adjustable or adjustable, and that the inlet and outlet cross-sections (23/1, 23/2 23/3; 23/1 ', 23/2', 23/3 ') of the passage channel (23) on the periphery of the plug (22) have such a position and size that depending on the twisting or adjustment of the plug (22 ) a) a speed and power control of the ATL turbine ( 2 ) due to controllable exhaust gas allocation and / or b) an exhaust gas discharge with controllable exhaust gas discharge amount, and / or c) an EGR with regulation of the derivable exhaust gas quantity between zero and a desired maximum, and / or d) controlled engine braking due to a control of the inlet channel ( 13 ) with the possibility of a variable setting to differently sized minimum exhaust passage cross sections given is. 6. Internal combustion engine according to claim 5, characterized in that all four connection channels ( 13 , 14 , 15 , 16 ) with a rectangular cross section open into the interior ( 12 ) of the rotary valve ( 10 ), the two longitudinal edges of each rectangular cross section being parallel to Extend axis of rotation ( 27 ) of the plug ( 22 ). 7. Internal combustion engine according to claim 6, characterized in that all four connection channels ( 13 , 14 , 15 , 16 ) with the same width and length of rectangular cross-section open into the interior ( 12 ) of the rotary valve ( 10 ). 8. Internal combustion engine according to one of claims 6 and 7, characterized in that the first outlet channel ( 14 ) with its mouth cross section by an angle α of approximately + 137 °, the second outlet channel ( 15 ) with its mouth cross section by an angle β of approximately . + 98 ° and the third outlet channel ( 16 ) with its mouth cross section at an angle γ of approx. -108 ° - in relation to the respective channel center line - in relation to the mouth cross section of the inlet channel ( 13 ) offset into the interior ( 12 ) of the rotary valve ( 10 ) flows out. 9. Internal combustion engine according to one of claims 6 and 7, characterized in that the first outlet channel ( 14 ) with its mouth cross section by an angle α of approximately -100 °, the second outlet channel ( 15 ) with its mouth cross section by an angle β of approximately . -50 ° and the third outlet channel ( 16 ) with its mouth cross section at an angle γ of approx. + 125 ° - in each case based on the respective channel center line - in relation to the mouth cross section of the inlet channel ( 13 ) offset into the interior ( 12 ) of the rotary valve ( 10 ) flows out. 10. Internal combustion engine according to claim 8, characterized in that the rotary valve plug ( 22 ) from the passage control channel ( 13 ) - the first, smallest inlet and outlet section (23/1), about a circumferential portion of approximately 32 °, - the second, medium-sized inlet and outlet section (23/2) over a circumferential section of about 48 ° and - the third, largest inlet and outlet section (23/3) over a circumferential area of approximately 110 ° extends that further the circumference of the chick ( 22 ) - between the first and second inlet and outlet section (23/1, 23/2) extending first cam portion (24) comprises a circumferential segment of approximately 35 °, - between the second and third inlet or outlet cross section (23/2, 23/3) extending second control surface area (25) comprises a circumferential segment of approximately 60 ° and - between the third and first input or outlet section (23/3, 23/1) extending third control surface area (26) comprises a circumferential segment of approximately 75 ° and that each of the four connection channels ( 13 , 14 , 15 , 16 ) with the width of its rectangular cross section given in the mouth area covers an arc segment of approximately 30 ° on a circular cylindrical peripheral surface section of the interior ( 12 ) receiving the plug ( 22 ). 11. Internal combustion engine according to claim 10, characterized in that the plug ( 22 ) of the rotary valve ( 10 ) consists of two coaxial, parallel spaced circular disks ( 28 , 29 ), between which three spacer posts ( 30 , 31 , 32 ) extend, on the circumference of which one of the three control surface areas ( 24 , 25 , 26 ) is provided in each case, so that the plug ( 22 ) can also be installed in the interior ( 12 ) that can be opened from one side and with its circular disks ( 28 , 29 ) therein small radial clearance is rotatably received, wherein the interior space after installation of the plug (22) forming by a part of the housing (11) cover (33) is lockable and that the plug (22) via an axle (34/1, 34 / 2) mounted in the housing (11, 33 is mounted), the axis (34/2) preferably extends from the housing (11) apart with a part through the cover (33) and there to an electrical or hydraulic servo-motor is connected, which receives its setting commands for a corresponding setting or adjustment of the plug ( 22 ) from an electronic control unit, which works microprocessor-based on the basis of stored motor and / or other operating data as well as the actual data supplied to it. 12. Internal combustion engine one of claims 4, 5 and 9, characterized in that each of the four connection channels ( 13 , 14 , 15 , 16 ) with the width of its rectangular cross-section given in the mouth region is an arc segment of approximately 20 ° on a circular cylindrical peripheral surface section of the interior (12) covers, and that the inlet and outlet cross-sections (23/1 ', 23/2', 23/3 ') of the passage channel (23) on the plug (22) on the outside all the same angle of about 75 ° cover, and that on the chick ( 22 ) - at its first, stationary cam portion (24 ') ° over an angle of about 30 between the first and second inlet and outlet section (23/1' extends, 23/2 '), - the inlet and outlet cross 'the other end is limited by a stop post (35), on whose opposite side the rotatable, the second control surface area (25 (23/2)' is supported) having arcuate segment (36) in its basic position, - The arc segment ( 36 ) covers an angle of approximately 30 ° and in abutment with the stop post ( 35 ) together with this an angle of approximately 60 °, and - at its third, stationary cam portion (26 ') extends over an angle of about 50 ° between the third and first input or Auslasskanalquerschnitt (23/3', 23/1 '). 13. Internal combustion engine according to claim 12, characterized in that the plug ( 22 ) consists of two coaxial, parallel spaced circular disks ( 37 , 38 ), between which two spacer posts ( 39 , 40 ) and the stop post ( 35 ) are each firmly connected and the arc segment ( 36 ) extend rotatably, the first control surface area ( 24 ') being provided on the outer circumferential side of the spacer post ( 39 ) and the third control surface area ( 26 ') on the spacer post ( 40 ). 14. Internal combustion engine according to claim 13, characterized in that the control surface area ( 25 ') having the arc segment ( 36 ) via a strut ( 41 ) is fixedly mounted on a drive axle ( 42 ), that this drive axle ( 42 ) on the one hand in the housing ( 11 ), there a bearing eye ( 43 ) of the housing side wall, and on the other hand mounted in the circular disc ( 37 ) and extended through the opposite circular disc ( 38 ), which supports it, out of the housing ( 11 ), that on the outer free section of the drive axle ( 42 ) an electric or hydraulic servomotor is connected, by means of which the arc segment ( 36 ) can be swiveled back and forth between the posts ( 35 , 40 ) within the plug ( 22 ) such that the housing ( 11 ) on the circular disc ( 38 ) opposite side is closed by a cover ( 33 ) centered in the round interior ( 12 ), after removal of which the preassembled plug ( 22 ) is inserted into the cover measure from one side open interior ( 12 ) can be installed that the circular disc ( 37 ) with a drive pin ( 44 ) is mounted in the cover ( 33 ) and at its outer free end an electrical or hydraulic servomotor is also connected, with which Rotation and adjustment of the plug ( 22 ) can be accomplished, and that both servomotors of this rotary valve ( 10 ) can be operated by commands from an electronic, microprocessor-based control unit operating on the basis of stored motor and / or other operating data as well as their supplied actual data values.