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[quote][i]Algselt postitas: Maku[/i] Praegu ei ole veel keegi siin foorumis otseselt seda teemat puudutanud, kuid ilmselt varsti seda tehakse. Teatavasti on V6 ja V8 (kindlasti 3.0, 4.0 ja 4.2) sisselaskekollektorites klapid, mida liigutatakse juhtmooduli abil. [url=http://www.carpictures.com/vehicle/03C0B123167420.html]Audi A8 4.0tdi[/url] raamatus on kirjas järgmiselt: [i]There are variable, two-position swirl flaps integrated into the intake tract. They can be used to adjust the air movement according to the prevailing engine speed and load. High swirl at a low engine load optimises the combustion process as, conversely, does low swirl at a high engine load. [b]In practise this means that a closed swirl duct at low load increases swirl, while open ducts at high load boost cylinder charging.[/b][/i] Vähemasti 4.0tdi kollektoris on ühe silindri kohta kaks kanalit ja nendest ühe kanali see klapp vajadusel sulgebki. Audi kollektorites polegi klapid niivõrd nõrgad, kuid nende juhtmootorid saavad kuidagi iseenesest otsa ja eraldi neid ei müüda. Ainult koos sisselaskekollektoriga. [url=http://www.audiworld.com/news/04/a8tdispec/content2.shtml]Audi 3.0tdi[/url] kohta on kirjas: [i]For the first time, the electronic swirl flap control system also permits intermediate positions to be selected. The six flaps are moved to the optimum setting in front of the spiral inlet ports in accordance with a mapped characteristic. [b]This makes a major contribution towards keeping exhaust emissions low.[/b] At low engine speeds and loads, the minimum emissions flap is closed, so that the degree of swirl is high. At low engine speeds but when the load is high, an intermediate setting with moderate swirl significantly reduces emissions. At higher engine speeds and when peak performance is called for, the swirl flaps open fully and the degree of swirl is therefore low.[/i] Mis aga klappe puudutab, siis vähemasti BMW kohta on kuulda, et neid visatakse sealt lihtsalt minema. [i]Swirl flap control DDE 4.0: The controllable swirl flaps are located in the intake pipe and are closed or opened depending on the operating status. The flaps are closed at engine speeds below approx. 2000 rpm and injection volume below 30 mm^3. Function: The pressure converter connects the vacuum unit with the vacuum supply by means of hoses. When activated by the DDE control unit, the changeover valve switches vacuum to the vacuum unit thus operating the control rod and closing the swirl flaps. The control rod is up against the rear stop when the swirl flaps are open. Troubleshooting: Fault code 1A22 "Swirl flaps" is stored if a defect occurs in the activation of the pressure converter. Effects of faults: [b]Swirl flaps stick in open position: Deterioration in exhaust gas characteristics in lower speed ranges otherwise no effect. Swirl flaps stick in closed position: Power loss of approx. 10 % at higher engine speeds.[/b][/i] [url=http://forums.5series.net/lofiversion/index.php/t70452.html]Removing the swirl flaps in a diesel engine[/url] Kirjutage julgelt, kellel antud teemaga mingi kokkupuude on olnud.:) Marko [/quote]
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Eesti Audi Klubi foorum
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Diesel power
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Diislite sisselaskekollektoris olevad klapid
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