Pasakykit man, kuom skiriasi atviras oro "nuleidimo" voztuvas nuo grenzerio voztuvo, arba mazos ivores su spiruokle ir sratuku, kuris stovi kiekviename anglerugstes reduktoriuje? Sis baracklyne kainuoja desimt litu, panasiai ir ji nauja nutekinti ir issriegti kainuoja. Prikalibruoti prie bet kokio slegio nekainuoja nieko, tik pruzinkas pasikeitalioti reikia. Gal man pasiulyti sasiedui uzsiimti uzklasine veikla, jis tekina ir mandresnius dalykus. Kiek duodat? Svilpuku galesit prisiklijuoti ant virsaus, kai atleisit gaza arbe uzsioverboostinsit, svilps kaip paravozas Galima dar nusidazyti melynai ir uzsirasyti apexi...

jo geras klausimas, nelabai suprantu kosk pavizdziui skirtumas tarp atviro ir uzdaro, kodel visi metas gamyklinius (uzdarus) lauk ir statosi svilpukus, ar ce mados reiaklas ar kaskuom geresni atviri?

Pontas didesnis kai svilpia, beje atviras bovas oro slegi isvaro lauk, o uzdaras bovas grazina ji i turbika.O tai jau jam ne i sveikata, jei turbiko slegis didintas.

nu istikruju tai yra is ju tolkas, bet tik kai zinai kur nori vaziuot. Ypac jeigu kokiam dragui ar raliui, kur svarbu permetinejant saibas kad nestabdytu turbinos, tai yra gerai. Turetu ir fibros turbinos ilgiau gyventi.Aisku, kas kolekcionuoja navarotus ir nieko nesidomi, tas bovas yra prikolas.Kaip ir tas nitroso nuleidejas - garai kaip is paravozo is po kapoto eina - vaikam daro ispudi, bet tolko is jo ten kaip ir is svilpuko kamine - tiek pat...

1. Drage BOVas tik i minusa.
2. Is to NO nuleidimo matyt yra nauda - jei jau ji rimtos mashinos naudoja.
3. Egzpertz?

"1. Drage BOVas tik i minusa. " Dragini, egpertz?

A vot tocnai Spade, pagalvojau, kaip... ? Yra juk visokiu bov...

...ir yra visokiu turbinu. Jeigu nisane stovi t25 pimpike, tai gal ir uzsidampina slegis vamzdziuose ir cooleryje, nezinau, bet jeigu didesne kur sunkiau isibegeja, manau ne pro sali nuleist gara butu.

Nieks nesigincija, kad yra ivairiu...
Tingiu aiskinti teorija kodel tas BOVas bus drage i minusa, bet siaip jau kaip mes zhinom drage begiai perjunginejami (veik) neatleidziant gazo. Kam tada tas bovas? Jokios naudos... O jei jungiama atleidinejant...

Simon Gishus (Nizpro) nuomone (bijau kad mums dar kiek toli iki jo ):

What are some areas where people often make errors modifying their turbo car?
"The classic blow-off valve.

"The blow-off valve is designed as an emissions control device for OE manufacturers. It came about when smaller engines made more and more power using larger turbochargers and bigger intercoolers. As you close the throttle, the build up of pressure and the larger volume inside the intake has to go somewhere; it can't go into the engine because the throttle is shut. Instead, it has to do a U-turn and it comes screaming out the airflow meter. That creates the 'gobble-goggle' sound.

"The gobble-gobble sound is something the public has grown to love.

"The airflow meter is not all that smart and does not realise the air is going in the wrong direction; it therefore measures the air twice (once going into the engine and again going out in the wrong direction). The computer now tips in twice as much fuel as what's required, making it run rich - making it not pass emissions.

"Therefore, manufacturers fit a blow-off valve - or a recirculation valve as they are actually called. A recirculation valve opens when it senses manifold vacuum, returning the air trapped at the throttle body to between the airflow meter and the turbocharger. As such, the airflow meter does not take a double reading - the car now passes emissions.

"Unfortunately, we've had people ringing up and wanting the "audible gear change alarm".

""What audible gear change alarm?" we ask. "You know, when the Sierras were running around and just when they went to change gear it used to go whoda-whoda-whoda" they tell us.

""No pal, that is the dump valve..."

"Some people do think that at the absolute upper extremes of boost levels - about 30-plus pounds - the blow-off valve does, somewhat, save the compressor wheel and shaft from trying to rotate backwards. It doesn't actually rotate backwards at all - all you're hearing is cavitation. What happens is, you've shut the throttle, the turbocharger is doing 100,000 rpm and now has a boost spike of 50 psi. Because it's working in a higher region than what it's designed for, it slips; it basically does a skid like a car tyre does when you dump the clutch. That's the noise you hear - the whoof-whoof-whoof is the air doing a skid."

Is there any performance gain to a blow-off valve?
"We've tested one on a manual gearbox performance car run at Winton Raceway. I think it was running 1 minute 40s back then, but it would lose 2 seconds a lap putting the gobble-gobble valve on. When you look at data acquisition, what you find is - as you change gear - the blow-off valve dumps all the pressure built up through the intercooler and pipes. It then goes back to zero manifold vacuum when you get back on the throttle, you have to build all that boost back up.

"The fact that people think that they keep the turbo spinning is a problem. The people that suggest this have never had an engine on the dyno and never had a turbo tacho in their hands. What people don't realise is, when you shut off the throttle, you shut off the air supply to the engine - this shuts off the exhaust gasses coming out of the engine. When there is no exhaust flow, there is no energy to keep the turbine spinning - the turbo slows down at an alarming rate.

"If you change gears at quite a good speed, you can actually get a boost spike on changes; if you're trying to hold a constant 30 pounds, when you do a racing change you'll get 32-33 pounds when you crack the throttle open again. If everything's working well, you've got a full head of stream waiting to go into the throttle as soon as it's opened.

"I've done this on a rally car and it was quicker through every timed section without a dump valve. You'll never hear a World Rally Car going pssshhht because they don't use a dump valve - you get the woof-woof-woof noise instead."

Informacija apmastymui taip sakant

Nelipk ant greblio

Ne, nedraginu.
Bet "truputi" domiuosi turbo tuningu... O ne tik: palcy vejerom, ja egzpert - kaip nekaikurie (pirshtais nerodysim )...

Nelipk ant greblio? Gal nori patikslint ka turi omenyj cia?
Sakai paskaitai koki "turbo wizarda nete" ir jau "domiesi" "truputi"?
Nedragini ir zinai jau kas drage gerai ir kas "tik i bloga"? Ar rankas kada bent isitepaluoji? Tu nuvaziuok i draga geriau ir pamegink savo nisanui be sankabos begius pakist Cia ka nupaste'inai is kazkur, tai yra konkretiem atvejam parasyta.Pas mane pavyzdziui oro srauto matuoklio nebuvo isvis. Nuo turbinos iki sklendes originaliai stovejo 15 cm. triuba. Tai kas vyksta su mano kompresoriu kai as uzsidarau? Reikejo gaila neisikisau manometro i triuba paziureti kas joj darosi, kai imynes gerai atleidi...nors man atleisti isvis nereikia seip. Vabse cia konkretizuoti viska reiketu tokioj diskusijoj, koks modelis ir kokia sistema. As parasiau tik kad BOV yra labai paprastas sudukas, kuris nevertas nei trecdalio ka daugelis uz ji moka.

Ta ir noriu pasakyti... Manau sitas lietuviskas frazeologizmas nesunkiai suprantamas.


Pataikei tiesiai i tiksla.
Vakar perskaiciau - siandien parasiau

Tikrai nevertetu man lygintis su Egzpertu ish didziosios raides... Labai atsiprashau, kad ishdrysau.


Taip pat as ne vishta ir kiausiniu nededu Bet supuvusi kiausini nuo gero atskirt sugebu...


O ka tu manai? Turiu pasistates didziajam kambari baka su Castrol RS ir kiekviena vakara butinai pamerkiu rankas bent 5 minutem O kartais ir kojas.....


O kam? Pats megink - tu juk egzpertaz Jei butum nors kiek idemei skaites, ka as parasiau, pastebetum, kad apie sankabos neismynima as nieko nekalbejau...


Na zhinoma, konkretiems atvejam. Tavo atvejis nekonkretus


Na va, dar ir asmenybes susidvejinimas
O kas rashe, cituoju: "Ypac jeigu kokiam dragui ar raliui, kur svarbu permetinejant saibas kad nestabdytu turbinos, tai yra gerai."

Zodziu tryda neverta laiko ir eterio. Frazeogolizmas Nebekomentuok mano postu, ok? As nelysiu prie tavo.Sutaupysim laiko rimtesniem darbam...

Nu tu mane nustebinai... O tai kaipgi matavimasis... Nebus