DE3106572A1 - Exhaust arrangement for an internal combustion engine - Google Patents

Description

. - ..:. 3136572

SLOWLY

The invention relates to combustion engine Augasainrich = tungea.

The invention can be used in four-stroke -Combined combustion engines with high displacement will be.

The invention can be most successful in diesel engines κ it can be used with exhaust gas turbocharging.

The experiences of the domestic and foreign Jieeelmotorenbais show that the perfection of the combustion engine exhaust systems is one of the most effective measures to improve the operational characteristics of the combustion engines with high displacement and especially the combustion engines that are equipped with a turbo-compressor _s represents.

Oils Combustion Engine Exhaust Equipment comprises a number of assemblies and individual parts that provide constructive signals, gensets and dimensions to a very large extent, the flow loss © dss? Exhaust gases on the I7 @ g of de α working cylinder of the engine asm turbocompressor be einflujBsen _s and moreover, the service life and efficiency of the dsn Turboverdiohters.

It is known that the complex completion of the gas dyaamian characteristics of the exhaust gas system by means of the number of an optimal design and the optimal Kaßverhälisse of the assemblies and the individual parts of the device enables the flow ν a rl us te the gas gases around J ^ -5% to. lower, then increase the efficiency of the turbo-compressor by 3-6%.

BAD OTiGSNAL

engine, which is related to the emission of exhaust gases from the S / iotorzylind'3i7 _Φ reduce by 2-5 % au, ι as an overall reduction in fuel consumption; the internal combustion engines used in means of transport by 4-1J g / k // h guaranteed over the entire range of operating conditions «

Internal combustion engine exhaust devices are currently used began to take measures to perfect it can track.

So an exhaust gas device is known that a wait Exhaust pipe and at least one connected to this pipe Includes nozzle. The inside surface of this Stutzeas forms a channel that has an entry and a Has outlet cross section. The length of the mare: -, enkanal3 from the entry cross section to its exit cross section is equal to 1.5 to 3 of its reduced diameter. The reduced diameter is equal to the length of the Perimeter, divided by the normal channel cross-section

by the number YY , which is equal to 3.14.

The specified length of the nozzle duct is due to the limited main dimensions of the combustion gates, which are intended for use in means of transport.

the exit of the exhaust gases from the channel ι it nozzle in the exhaust pipe requires overcoming a

Str imurj / ^ owidorstandii what

considerablyon ^ due to the sharp change in direction of the exhaust gas flow due to the limited length of the canal of the nozzle conditional; is and losses of part of the specific Energy of the exhaust gas flow results, which in turn Stromuijgsverluste the exhaust gases are caused.

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BATH

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Ea is aaeii aQ "¥ err®mimgsaotor ~ lbgas device (SU-Io 682663) known, which contains © in the exhaust pipe and at least one connection connected to this pipe. The inner surface of the Stutsoma bildat @ lxx @ n duct, the 3 one entry and one exit square basits

The angle between the? SQktlfisiersndsa 3bsn ©, di © via di® first tangents to KaaalaQhso at the intersection of the aforementioned ICanalaohse with the exit cross-section of the

nals senlufQcht aur main norraale dsr canal axis runs in the same point of intersection, among other thingsö the wide Tani; © nta aur luspiffrohraohs® at the point of intersection above said rectif izlerendm level with the Äuepuffrohraohsa, is 20-45 °.

The said ifinkol sw laughing at the mentioned raktificiersndon level and the beaagton tangent aur Auspuffcohraoh-SQ closes the outlet angle of the exhaust gases from the duct dss st ut a ens in the carrion ear that. The limitation of this kinkel in the 7orli @ g®ndea is insiohtung Bar®loh permitted by 20-45 ° to d @ n ^ orstahoad beschriabenen institutions a reduction in a <aa Stsömungswlderatands the exhaust gas stream in the transition awisohsn the neck and ä @ m exhaust pipe entatdht ^ which © ISQ '/ ^ rmiadorimg dor St2? oaiungsvarluste of the exhaust® conditionally roi2? d _e

But as a result of bsgr © nstea length avalachen daia exhaust Tohr and ¥ "© rbr @ nnungsmotor b ^ id © r arrangement of entry" - and äes Austrittüiguerachaitts to <IMD same page ain dos Auspuffrohraohss ₉ Is it uasogliohjeia ^ a stub aus3ubild @ n _s whose canal © lae stoBfrai

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For this reason, an additional hydraulic system is created Flow resistance for the exhaust © when they enter the channel flow through the nozzle.

The invention is based on the object of a ¥ bronnundamotor exhaust gas device au schaffan, in which the outlet cross-section of the duct in the nozzle opposite his Inletaquerscnnitt and the exhaust pipe so arranged is that it becomes possible to the duct of the nozzle one Form su give that a bumpless flow of the exhaust gases over the entire length of the duct from the inlet cross-section guaranteed up to its exit cross-section, whereby a reduction in the hydraulic flow resistance of the exhaust pipe as it moves over the duct and its Exit from the duct of the connecting piece into the exhaust pipe results.

This object is achieved in that in the known Internal combustion engine exhaust system, which is an exhaust pipe pipe and at least one connected to this .pipe Contains nozzle that has a channel with an inlet - and an exit has a cross section, where the angle between the rectifying Eb ans, which is about the first Tangent to the duct axis of the nozzle at the intersection of the said Kanalachaa with the exit cross-section of the canal

^ T

old of the exhaust pipe axis ₂ 0-4 ₅ ° is the same, said

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EPOCOPY

canals on both sides of the Äuspuffrohraehsa, and the angle between the over di <a says © first © tangent and Jie said main normal ^ erlaisfsndon Sohmiegaba and 3er third tangent to the exhaust pipe axis in the intersection; the said Schmisgebsn © with the exhaust pipe axis up to .12 ° is the same "

The arrangement of the inlet and outlet cross-section of the Stutzsnfcanals to both ^ü _@ it © n of the exhaust pipe . the exhaust pipe needs to encompass the said nozzle and thus the length of the duct from the entrance to the exit cross-section is increased. This makes it possible to give the nozzle duct a shape that allows the exhaust gases to flow smoothly over the gQsaata length © of the Stutssnkanals g®wähi? l © ist @ t. When embracing the exhaust pipe a with the nozzle lcann for ÖQB The said® wing between the nesting plane and the third Tangentο sur AuspuffrohEachs®, which is 1-22 ° and has been ormittialt via calculations and Ifsrsuoh®, enables the flow resistance for the exhaust gas flow when it emerges from the channel into the exhaust pipe, which is related to the jJJrall of the exhaust gas flow ₉ to be reduced to a certain extent «

The invention is explained in more detail with the aid of the drawing »Es as Igt

J ¹ Ig. 1 is a VerbrfnnuD.gsaotor-Abgassinrlchtung that ispuffrohr an A and sine Hellie of fiohr to this ango-

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closed socket contains} general view;

Fig. 2 shows a part of the exhaust pipe with one of the stubs a with a part from section ₉ plan view; Fig. 3 the same, view in direction A in £ ig. $ 2

Fig. 4 shows a combustion engine lbgassinrichtang, the includes an exhaust pipe with a socket connected to this pipe;

5 shows a schematic representation of the connection the exhaust system to the internal combustion engine and the turbo compressor.

The combustion engine exhaust device (Fi ₆ J.1) contains an exhaust pipe 1 with a duct 2. The exhaust pipe has a flange 3. A number of connecting pieces 4 are connected to the exhaust pipe 1. The inner-stringed surface of each connecting piece 4 represents a gradually tapering channel 5, which has an entry cross section 6 and an exit cross section 7. The flee of the inlet cross section 6 of the channel 5 is greater than the area of its outlet cross section 7 "Jader Stu; zan 4 has a connection flange 8. The inlet cross section δ and the outlet cross section 7 of the channel $ of each of the nozzles 4 are on both sides the axis) of the channels 2 of the exhaust pipe 1, so that each nozzle · (· said exhaust pipe 1 comprises in part. the .Vinkei IO (Figure _e 2) between a rectifying layer 11, that of the channel via the first tangent 14 to the Ächso 12 5 of the section 4 at the point of intersection 13 of the axis 12 of the channel 5 with the exit cross-section 7 of this channel 5 perpendicular to the main annial 15 of the axis 12, the channel 5 at the same intersection

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runs', and the two tan tangents 16 to Achs® 9 des Exhaust pipe 1 at the intersection 17 of the said rsktifikierend'.n -Plane 11 with the axis 9 of the exhaust pipe 1 is equal 20-45 ° ο

The area of the angstan cross-section of the channel 5 the Stut -.ens 4ρ is in the plane perpendicular to the axis 12 of the channel 5 is equal to O _p 45 - O ₉ ? the area of the cross section of the duct 2, the exhaust pipe 1, which is perpendicular to said second tangent 16 at the intersection point 17. The narrowing of the channel 5 of the stage 4 down to the said size of the narrowest cross-section of the channel 5 ensures a local pressure reduction, which creates the possibility of the exhaust gases being sucked out of the cylinders of the combustion engine, whereby a thorough cleaning of the cylinders of the Internal combustion engine is guaranteed what '.vied it increases its economic liziiksit.

The angle 18 (Pig «, J5) between one above the said first tangent 14 and di © said main normal 15 extending Schmiegenda 19 and the third-tone tangent 20 sar Axis 9 of the exhaust pipe 1 in the Sohalttpunkt the Schmi © gab @ na 19 with the axis 9 of the exhaust pipe 1 is 1-22 °.

In I? Igo 4, the internal combustion engine exhaust device is shown, which contains an exhaust pipe 22 with a connecting piece 23 connected to it.

In Fig. 5 is an internal combustion engine 24 with an exhaust Device 25a connected to a turbo compressor 26 is ρ shown »

The application of the exhaust gas device according to the invention enables a reduction in fuel consumption

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BATH ORIGINAL

combustion engine by 5 - 7 grams per KoI oiv att st and θ (g / kv '/ n) as a result of the reduction in the flow losses of the exhaust gases

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Claims (1)

(entered / i Tsentrainy Wauchno-Issledovatelsky TXizelny Institute (TSIiIDI) / EMISSION MOTQS -ABGASEUSRICffiraNG ^ PATENT CLAIM / grbnazmungsmotor -gaseinriugtuag mi & a imam exhaust pipe and at least © inam at di <§s @ s zuehloüe ®n®n St at ζ? nj the © insn canal with ainsra entrance «- and one exit has cross-access, even with the ÄnkeX zwlBGh ^ n rsktiCiziessadin bben ^ j iXb®s sYou © rate Saagant © sojt nalaciise Stat sons in ^ cimlttpösit the basagton Kaa © aehae with the Austsittsquerachaitt the Kanala senkreoht HauptxiormalQ the channel axis in the same ^ ohnlttpimkt skating, and swoiten Tangents zax in Seim itt ρ point of the b @ · saidii rokrfcifying level with the Äuspuffroliraons <f 20-45 "equal is characterized by _p that - äes .Eintrittsqaersühaltt (6) imd the 1 ustrit ^ cross section (7) dge said Statsona (^ ^- ) ^ζ & bsid @ n sides the Ichs © (9) the said exhaust pipe (1) are arranged? - the angle sroiachsn the about the bssagta ersta 130086 / 06U EPO ta (14) and the said main normal (15) denote Scümiegebene (19) and the third tangent (2O) ₉ to the axis (9) of the said exhaust pipe (1) at the intersection (21) of said Schmiegebene (19) with the axis (9) of said exhaust pipe (1) p; ird _s 1-22 ° is the same. 130066/0614