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Am pus BOV - Blow OFF Valve
Salut,
Deci este un BOV - BLOW OFF VALVE. E un model UNIVERSAL, care se potriveste aprope la orice motor de bezina cu turbo! Se numeste SuperS BOV are o surub (screw) cu care sa reglazea cat de tare sa fie saritura (spring), care este inauntru! Daca e stransa, atunci BOV sa deschide mai greu si la pressiune mai mare. Daca e mai liber/slobod, atunci sa deschida mai usor si la pressiuna mai mica (si face pssss mai tare). Deci reglare e foarte usor si poate sa faca oricine, cine are srubelnita :) La filimon A trebuit sa reglam cu VAG.COM, numai din cauza asta ca e 1.8 T de la VW/AUDI group si montare e mai greu :). Pentru ca acest motor are MAP si MAF sensor. Majoritatea masinilor cu turbo au numai MAF, atunci e mult mai simplu cu reglare! NORMAL LA ALTE MOTARE CU TURBO BOV SA MONTAZEA IN 10 MIN.! Imi foarte place sunet! E ceva foarte placut, cand mergi cu masina si schimbi viteze :) Dar Cel mai bine daca va da parere filimon :) La inceput am montat-o ... http://www.insomniaracing.org/poze/bov/bov01.JPG Am montat si laptop ... http://www.insomniaracing.org/poze/bov/bov06.JPG VAG.COM ... Au fost errore, care am eliminat :) http://www.insomniaracing.org/poze/bov/bov02.JPG Inca filimon merge cu laptop, ca sa vedem daca tot e OK ... http://www.insomniaracing.org/poze/bov/bov03.JPG Dupa cu screwdriver am reglat-o http://www.insomniaracing.org/poze/bov/bov10.JPG The hero :) http://www.insomniaracing.org/poze/bov/bov07.JPG http://www.insomniaracing.org/poze/bov/bov08.JPG http://www.insomniaracing.org/poze/bov/bov09.JPG http://www.insomniaracing.org/poze/bov/bov11.JPG Nu am poze inainte cum aratea BOV, nu montat ... filimon le are. O sa le pun mai tarziu. Daca este cineva interesat --> PM! Calitatea buna si 1 an de garantie! si pret bun - 130 Euro :) Pot sa am si Dump Valve! E made in Polonia. Majoritatea masinilor are acest BOV. Aprope nimeni nu cumpara alte, pentru ca un HKS sau Stealth costa foarte mult. Bafta! |
Ca are surubel de reglare, si mai face si psssss, asta stim.
Dar spunene si noua pt. ce e bun, inafar de psssssss :? Daca stii :?: Nu de alta dar e bine sa se lamureasca una lume pe ce da banii |
Eu nu inteleg pe ce masina ati montat acest BOV! Pt ca masina ta, zetemte, din cate stiu eu nu are turbo si tu ai zis ca se monteaza pe masinile pe benzina cu turbo!
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Cate ceva despre dump valve si blow off valve!
\" The fitting of an aftermarket Blow Off Valve or Dump Valve is one of the most common and usually one of the first modifications done by owners of Turbo cars including the GTI-R. The purpose of a Dump Valve is to ensure that the turbo is not put under undue stress due to compressor surge. Without a Dump Valve, when the throttle is released suddenly, such as when changing gear on boost, the blades of the turbo will stall as the throttle flaps shut, forcing the boost back down to the turbo, and stopping the blades. This will eventually cause the thrust bearings to fail. By releasing the boost at a point very close to the throttle when changing gear, the turbo is allowed to continue spinning. This also helps turbo spool up faster after a gear change, because the turbo is still spinning and requires less time to spool up. The Dump Valve works by using the vacuum line from the engine (normally taken from the inlet manifold) to pull up a piston, to release the boost. Most modern Dump Valves have two pistons, an inner piston and an outer piston. During idling, when the inlet manifold registers vacuum, the outer piston of the Dump Valve is drawn up, but the inner piston remains locked in place so that no un-metered air can enter the system. As the car comes on boost, the pressure at the inlet manifold rises, and becomes positive - this effectively holds both pistons of the Dump Valve shut against the pressure building from the turbo. When you suddenly release the throttle, the throttle flaps close, immediatley sending the inlet manifold into vacuum, however the inlet tract from the turbo to the plenum is still at a positive pressure. The vacuum from the inlet manifold coupled with the boost from the inlet tract forces the inner as well as the outer piston open. This then releases the boost either to the atmosphere or re-circualtes it back into the inlet tract, until there is no longer enough pressure to hold the inner piston open at which point it closes, leaving only the outer piston open. This whole process takes around 1 second from start to finish. There are many different types and variations of Dump Valve. The two main varieties are the Recirculating Dump Valve and the Atmospheric Dump Valve. The Recirculating Dump Valve is the type fitted to the GTI-R as standard. Once the excess air from the turbo has been released from the Dump Valve, it is returned back into the inlet tract and is used again. The Atmospheric Dump Valve, on the other hand, releases its waste air into the atmosphere resulting in a 'Phssssh' sound. Since the standard Dump Valve is a recirculating Valve, it is assumed that most people, who replace the standard item, do so with an Atmospheric Dump Valve. This Tutorial has been written as such. Dump Valves cost anything from £40 up to £300. Different people have different opinions of Dump Valves - some say that more money = better Dump Valve. I use a Forge Motorsport Dump Valve which costs around £120 and I find it to be more than adequate. Instructions: Perform the installation with the engine cold if possible to avoid burning your hands on the engine. 1. With the engine switched off, lift the bonnet and prop it using the bonnnet support bar. 2. Prise the Throttle cable from its seating in the intercooler frame on the Driver's side. 3. Using a 10mm Socket, remove the 4 small bolts that hold the Intercooler cover to the intercooler core. One of the bolts on the Driver's side, is recessed and may require an extention bar to enable you to remove it. 4. Using the same socket, slacken and remove the bolt on the drivers side of the intercooler cover that holds a 'p' bracket with a green metal pipe running through it. It should now be possible to lift the intercooler cover clear of the core. You should now be left with the black frame with the core attached. Before you remove the frame and core, note the small rubber pipe at the top of the frame, running from the intake manifold, through the frame, and down to the actuator. This pipe is used to regulate and restrict the boost. It will be necessary to, 5. Slide the spring clips, on the pipes, away from the intercooler frame to enable the pipes to be pulled free, thus enabling the removal of the frame and core. BE AWARE; THIS PIPE USES AIR PRESSURE TO FORCE THE ACTUATOR TO OPEN AT A SPECIFIC LEVEL OF BOOST. IF THIS PIPE IS NOT CORRECTLY RE-ATTACHED AFTER INSTALLATION, THERE WILL BE NO AIR PRESSURE TO FORCE OPEN THE ACTUATOR AND BLEED OFF THE BOOST. THIS WILL RESULT IN 'UNLIMITED' BOOST AND WITHOUT THE CORRECT FUELLING AND MAPPING - SEVERE DETONATION AND A DEAD CAR. Once this pipe has been unplugged, 6. Remove the four 12mm bolts that hold the frame to the black brackets and inlet manifold. 7. slacken the jubilee clips that attach the intercooler core to the rubber hoses which connect core to the inlet manifold and the tubo outlet pipe. 8. Using moderate force, rotate the core and frame slightly, in a clockwise direction to help the rubber pipes slide off, freeing the core and frame. You should now have easy access to the Dump Valve. The Standard Dump Valve has 3 Pipes attached to it. The replacement atmospheric Dump Valve should only have 2 (The small pipe Which is the vacuum pipe which opens the Dump Valve at maximum boost and the vertical large pipe which is the boost pressure pipe from the Plenum) The other pipe which attaches to the angled join, will not be required as this is the pipe used to recirculate the waste boost air back into the system; this air will now be released into the atmosphere, resulting in a nice \"pshhhhh\" sound. 9. Unbolt the standard Dump Valve from the block using a 10mm socket. Once the Dump Valve is clear, 10. Slide the spring clip away from the join on the small pipe and unplug the small pipe from the top of the valve. Slacken the jubilee clip that connects the bottom of the Dump Valve to the inlet manifold and unplug it. Do the same for the pipe connected to the angled pipe on the valve. It should now be possible to remove the Factory fitted recirculating Dump Valve. 11. Take the Bung provided with the new Dump Valve and insert it fully into the large pipe that was attached to the angled arm on the standard Dump Valve. This pipe is used to recirculate waste air and is no longer needed. 12. Replace the clip on the pipe, securing the bung in place. 13. Reconnect the other 2 pipes to the new Dump Valve and tighten the Jubilee clips and spring clips. The Dump Valve should not need to be physically attached to anything as the pipes which it is connected to are fairly rigid and should provide support. If you find that the valve rattles against the rocker cover or anything else, it is acceptable to attach a cable-tie around the base of the Dump Valve and tie it to one of the other fixed pipes nearby. Once the valve is in place, reverse the above process to re attach and reconnect the intercooler: 14. Begin by bolting the intercooler core and frame frame to the supports and inlet manifold. MAKE SURE YOU RE-ATTACH THE ACTUATOR CONTROL PIPE TO AVOID DISASTER! 15. Reattach the rubber hoses which connect the Core to the Turbo outlet pipe and the inlet manifold. 16. Tighten all of the jubilee clips firmly. 17. Place the Intercooler cover over the core and replace the 10mm bolts, including the 'p' clip. 18. Re-attach the Throttle cable in its seating within the intercooler frame. \" |
S-a montat pe PAC.
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90% din masinile turbo benzina au asa ceva.
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BOV (Blow Off Valve) a fost montat pe Seat Leon Top Sport 2003 1.8 Turbo (modificat cu remap). Masina a lui Philip, unu dintre membrii fundatori Insomniei. Sper ca o cunosteti.
MAI MULTE INFO CE ESTE BOV: http://www.insomniaracing.org/forum/viewtopic.php?t=831 A fost montat la loc unde era DV (DV - Dump Valve) stock, care e facut din PLASTIC. Pressiuna dupa modificare la Ceky, e mai mare decit a fost cand masina era stock. DV stock, care e facut din plastic, la timp incepe sa desfaca. Atunci ar trebui sa fie schimbat la DV din inox sau BOV. DV nu lasa aer afara. BOV e atmospheric si lasa aer afara de cycle. Asta e differenta. Dupa cand schimbi DV din plastic la BOV: - To eliminate compressor surge when changing gears. Excessive backpressure is created when the throttle is closed during gear changes or deceleration, causing turbo cavitation. This is detrimental to the life of your turbocharger; however fitting a BOV will substantially improve this problem. - By installing a BOV you will significantly reduce turbo spool up time. You will notice a substantial improvement in response from your turbo between gearshifts. Boost will come on earlier giving an increase in torque at lower RPM - Nice sound … Each time you let off your foot of the gas, after pushing it into high RPM’s, the BOV will make a nice PSSSSSSSSSSSSSSSST. (Fast&Furious :) ) Dupa schimbi DV din plastic la DV din Inox: 1. Tine pressiune, Platisc in timp sa desfaca. Oricum In timp daca faci macar REMAP sau Chip atunci sooner or later va trebui DV/BOV cu mai durabilitate. (mai multe detali pe Insomnia forum) BOV - Blow Off Valve http://www.insomniaracing.org/poze/bov/bov12.JPG http://www.insomniaracing.org/poze/bov/bov13.JPG http://www.insomniaracing.org/poze/bov/bov14.JPG http://www.insomniaracing.org/poze/bov/bov15.JPG http://www.insomniaracing.org/poze/bov/bov16.JPG http://www.insomniaracing.org/poze/bov/bov17.JPG http://www.insomniaracing.org/poze/bov/bov18.JPG http://www.insomniaracing.org/poze/bov/bov19.JPG http://www.insomniaracing.org/poze/bov/bov20.JPG DV - Dump Valve http://www.insomniaracing.org/poze/bov/DV.jpg Quote:
btw E primul pass la masina lui :) In curand plec in Polonia si o sa ma intorc cu ceva pentru el ;)[ |
\"\"\"\" Nice sound ? Each time you let off your foot of the gas, after pushing it into high RPM?s, the BOV will make a nice PSSSSSSSSSSSSSSSST. (Fast&Furious )\"\"\"\" :D (lool, pai voi pt pssst instalatzi BOV) Eu stiam ca sistemele de eliberarea a presiunii (BOv si DV ) se folosesc numai atunci cand Boost-ul dat de turbo este mare, si ca daca ai BOV pe boost mic pierzi din putere.
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Pai masina are o presiune in turbina mai mare decat cea de serie...peste 1,3 bar.
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Exact. Masina are peste 1.3 Bar in peak. Stock avea cred 0.7 Bar ...
Daca ai masina 100% atunci nu stiu daca are rost ... Dar sunt si BOV pentru masini stock si pentru masini cu MAP sensor, care nu support BOV atmopsheric. In curand voi avea si acest tip. Acum hibrida GFB costa in Polonia 500 de Euro. La acest tip de BOV lasa aer in atmopshera si in the cycle.. |
Deci am dreptate, BOV pe boost mic dauneaza :twisted: 8)
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NU!
http://www.insomniaracing.org/forum/viewtopic.php?t=831 Aici ai tot info ce face BOV. El sa deschide, cand numai apasi pe acceleratie si e prea mult pressiune in cycle! Salzavzea Turbo si reduces Turbo lag. |
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ceea ce spui tu se intampla doar daca este prost reglata, sau e defecta (caz in care sta deschisa la relanti sau la presiuni foarte mici si scapa presiune) |
Am inteles ce face.O intrebare destul de idioata, dar nu am inteles:se poate pune si pe diesel?sau are rost sa se puna pe un motor stock?
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Nu se poate pune pe un DIESEL, adica HDI, TDI, CDI etc !!!
Si Nu se poate pune pe motor N/A !!! |
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\"Supapa bypass si blow-off
Supapa bypass a turbocompresorului (SB) are rolul de a reducerea presiunea de alimentare din tractul de admisie, la inchiderea clapetei de acceleratie, sub actiune vacuumului. Aceasta recirculeaza aerul in admisia turbocompresorului, trimitand-ul dupa senzorul masei de aer. Motivul utilizarii acestei supape este faptul ca la inchiderea clapetei de acceleratie galeria de admisie este sub presiune iar aerul de mare presiune care intra in motor se va lovi de clapeta inchisa si in absenta unei supape SB unda de presiune se va intoarce spre compresor provocand fenomenul numit cavitatie si o franare brusca a vitezei sale de rotire. Acest soc afecteaza lagarele turbinei iar la redeschiderea clapetei compresorul va avea nevoie de timp pentru a reveni la turatia de lucru. Supapa bypass elibereaza aerul din fata clapetei iar turbina se poate rotii fara probleme, la deschiderea clapetei ea va prinde turatie mult mai rapid. Supapa Blow-Off (SBO) are rol similar cu supapa bypass, diferenta fiind ca ea ventileaza aerul suplimentar in atmosfera producand acel sunet distinctiv \"PSSSST\" atat de iubit de fani. Dezavantajul acestei supape este faptul ca cantitatea de aer a fost deja masurata la trecerea prin senzorul masei de aer iar ECU (Unitatea centrala electronica) va comanda injectarea unei cantitati de combustibil corelate cu cantitatea de aer masurata. Temporar motorul va functiona cu un amestec foarte bogat care va arde o mare parte in esapament, producand flacari spectaculoase. Acest amestec bogat poate afecta bujiile sau arde catalizatorul. O supapa SB nu poate ventila in atmosfera deoarece setarea arcului ei este prea moale si se va deschide si la deschideri partiale ale clapetei, derutand ECU. Pe piata sunt oferite supape reglabile la care se poate seta forta de tensionare a arcului. Reglajul acestora se face utilizand indicatorul de presiune al turbocompresorului. Intretinerea supapelor SBO este foarte simpla. Fiind expusa la intemperiile de sub capota, ea se poate bloca sau functiona neregulat. Majoritatea sunt demontabile, se curata cu atentie si se greseaza. Unele modele au un filtru incorporat pentru a preveni astfel de probleme. Supapele SB au avantajul ca au o durata de viata mai lunga si nu provoaca o intarziere in raspuns a turbocompresorului. Acestea au insa tendinta de a se gauri la o anumita presiune, fiind confectionate din material plastic.\" Material oferit de Nelu Nastor |
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lol ... sweet ... aici shtii cum ai pus problema ... imi fac tuning... la motor ??? nu ... ca dauneaza:D:D:D come on :):):) ... din punctul meu de vedere PowerTuning'ul la o mashina este facut sa ridici nivelul de performanta al mashinii decat sa scada. Crezi ca daca ar fi daunat, ar mai fi fost inventat? ... s-ar mai fi instalat BOV`u? :):) sa nu mi-o iei in nume de rau, dar mi s-a parut amuzanta declaratia ta :):) |
Pana la urma care din cele 2 e varianta optima pentru motorul 1.8T ? O alta intrebare e cam care ar fi limitele turbinei si ale injectoarelor la 1.8T cu codul AGU (cel mai vechi, cu injectoare mici(240cc)) ? Cu alte cuvinte ce putere poate atinge acest motor fara a risca prea mult ? Din cate am inteles, schimbarea numai a injectoarelor nu este suficienta. Trebuie alta turbina ( min K04 daca nu chiar T28, FPR, MAF housing de 2.5-3'' si evacuare cu acelasi diametru, pompa de benzina, injectoare de 380-440cc...)!
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mah BOV'u asta se poate pune numa pe motor turbo ?
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Mai intreb si eu odata ca asa e romanul...deci mey oameni cunoscatori in ale motoarelor...SE POATE SI PE MOTOARE NORMALE...ex. 1.4i ?????
MULTUMESC...!! |
chiar si eu sunt curios daca se poate pune pe un motor normal de masina ,fara a avea turbina si daca nu se poate macar spune-ti niste argumente care sa sustina ceea ce ziceti.
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se poate monta (fizic).
dar care este rostul? - turbina nu o sa o protejezi (pentru ca nu ai) - fssssst nu o sa faca pentru ca nu ai presiune. - inca o piesa in plus inca o sansa in plus sa se defecteze ceva - nu o reglezi cum trebuie o sa mearga masina prost |
aham ... deci nici pssssst si nici nimik ?
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hai ca mai intreb si eu...desi in mare m-am prins. pe diesel ce rost are?castiga motorul \"ceva\"? ca stiu pe cineva care sia pus pe 320d, si suna curios. nu face \"psssst\" , ci un fel de horcait :). pe bune. e ok ce a facut el, sau numa isi foote motorul?repet, vreau parerea cuiva care \"se stie\" mai bine ca mine la partea mecanica....mersi ;)
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:lol: :lol: :lol: :lol: :lol: :lol: |
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cu alte cuvinte .. benzinar turbo only :) altfel nu face fssssss :lol: |
pai aia zic si eu, ca diselaru' scoate un fel de horcait, nu psssss.
poate o sa il vedeti pe la ITS... e un 320 d rosu inchis cu numere BH84NOS...si cu ceva vinyls pe lateral si pe capota...masina e frumoasa. da cred ca si-a pus ceva de scoate horcaitul ala....suiera, nu scoate pssss ca si benzinarul turbo... de aia am intrebat. GAJu are pe calibra bov si stiu cum suna, am vazut si cum se monteaza.... :D da de aia intreb, care ar fi efectul pe diesel?sau ce naiba are NOSu sub capota de face asa? |
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stai sa vada fordv6/bytzu .. sa vezi atunci ... =))))))) doamne |
pe bune ca \"horcaie\"...las ca il filmez o data sa auzi si tu ;), da poate care mergeti la ITS 2 il vedeti pe acolo,c a e la mare...
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asta nu umbla cu chestii d'astea...are ceva la motor.las ca vine de la mare si ma lamuresc eu...
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sry man , dar eu radeam ca .. .\"horcaie\" folosim in alte contexte :)) glume , caterinci .. de nota 10 :)
anyway . asteptam filme .. sa vedem .. despre ce fel de horcait vbesti tu =)) eu nu-ti pot pune filme sa-ti arat la ce fel de horcait ma refer eu .. si sa .. analizam diferentele intre sunete deoarece ar insemna sa pun filme porno pe aici :)))) si nu-i voie :)) p.s: fordule :)) bytzule , datzi un semn dupa ce vedeti dracia asta :)) |
mi-am cam dat eu seama de ce horcait vorbesti tu, da...nu e ala. jur :):):)
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Asta cred ca e BOV si e pusa pe un Vectra Diesel cred ca e chiar cel de 2.0L seamana prea mult cu al meu.
Ce ma nedumireste este ca nu e pusa pe furtunul de la turbina, care trece chiar pe sub ea. |
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daca va place atat de mult sunetul respectiv puteti sa montati un dispozitiv electronic care face \"pssshh\" de cate ori schimbi treptele si sa lasati valva la locul ei sau s-o schimbati cu una recirculanta |
Daca e reglat bine, atunci merge. In Polonia multi au BOV pe 1.8 T si e OK. Problema este ca e greu sa o reglezi bine ca sa nu iti da errore.
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Re: Am pus BOV - Blow OFF Valve
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Re: Am pus BOV - Blow OFF Valve
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Re: Am pus BOV - Blow OFF Valve
ati trezit un topic din 23-08-05, in 3 ani a mai evoluat tehnologia si se poate pune si pe motoarele turbo diesel :)
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