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Forum 4Tuning (https://forum.4tuning.ro/)
-   Sisteme turbo si NOS (https://forum.4tuning.ro/15-sisteme-turbo-nos.html)
-   -   Blow Off Valve (https://forum.4tuning.ro/15-sisteme-turbo-nos/25534-blow-off-valve.html)

barladi 11-03-09 22:58
Re: Blow Off Valve
 
Aha.....nu cunosc modelele mai vechi de Golf 4, asa ca nu te contrazic. Deci raspunsul meu la intrebarea colegului este: nu poti pune BOV dc nu ai turbo

MS 87 PIJ 14-03-09 11:45
Re: Blow Off Valve
 
Salutare am un volvo s80 2.0 Turbo si sunt curios cum as putea sai pun un BOV sau sal inlocuiesc cu dump valve sau ..... chiar nu stiu daca cineva are idee rog sa ma ajute.

bdmy_yard 14-03-09 12:14
Re: Blow Off Valve
 
masina ii un golf 1 din 79 de 116 cp. ms pt raspuns o sa incerc sa pun un turbo cand o sa ajung un pic la bani

bulldog_cox 06-04-09 09:03
Re: Blow Off Valve
 
2 Attachment(s)
am gasit ceva poze cu cut out valve si ce face el, cu ce l-as putea inlocui sa sune mai tare suna bine dar nu tare:D sunetul nu este ''dintr-o bucata'' este treptat dar incet.
am inteles ca este acelasi cu cel de la audi 1.8t dar arcul este diferit

bluey 06-04-09 09:24
Re: Blow Off Valve
 
Ai putea sa ii dai drumu atmosferic si sa vezi daca motorul tau are senzorul pe care il are 1.8T.Adica daca iti da eroare.
Tu ai 2.2T nu?

bulldog_cox 06-04-09 09:51
Re: Blow Off Valve
 
Quote:
Originally Posted by bluey (Post 2214820)
Ai putea sa ii dai drumu atmosferic si sa vezi daca motorul tau are senzorul pe care il are 1.8T.Adica daca iti da eroare.
Tu ai 2.2T nu?
da. am 2.2 turbo

Paxter 13-04-09 19:49
Re: Blow Off Valve
 
salut baieti!

pt un volvo S40 1.8 din 2003 cat m-ar ajunge un bov + montare? un pret estimativ, stiu ca nu se poate precis :D

bluey 13-04-09 20:21
Re: Blow Off Valve
 
4-5000 de euro.
Vine la pachet cu turbo si vreo 50cp in plus :D

Paxter 13-04-09 20:22
Re: Blow Off Valve
 
Quote:
Originally Posted by bluey (Post 2235121)
4-5000 de euro.
Vine la pachet cu turbo si vreo 50cp in plus :D
masina are deja turbo :-P

bluey 13-04-09 20:44
Re: Blow Off Valve
 
intre 100 si 300E in cazul acesta.
In functie de model.
Verifica la bazar.

Paxter 13-04-09 21:26
Re: Blow Off Valve
 
Quote:
Originally Posted by bluey (Post 2235197)
intre 100 si 300E in cazul acesta.
In functie de model.
Verifica la bazar.
m-am uitat putin prin bazar, si am vazut unul la 50 de euro, dar e cam dubios de ieftin :rolleyes2

mie mi-e frica de costul de montare, din ce am citit pe forum e un proces dificil:???:

Lucian 15-04-09 19:19
Re: Blow Off Valve
 
Si toti care vreti BOV o faceti pentru ca supapa de fabrica baga in admisie aer deja incalzit de turbina , nu ? :))))

BiriV 16-04-09 11:12
Re: Blow Off Valve
 
Paxter ... ce turbo ai tu pe 1.8 ala? I-ai montat aftermarket? Ca de fabrica sigur n-are ...

AfUrIsIt 08-05-09 17:44
Re: Blow Off Valve
 
uitati un raspuns profi care sa clarifice aceasta situatie

"A petrolhead asked me on sunday if his Mercedes Vito turbo diesel van could be customed with a Blow Off Valve (BOV). He was really, really excited.

I burst his bubble with a simple ‘NO.’ Of course being a nice guy i explained why. And because i’m a nice guy, i’m explaining it in this post here as well.

You don’t need a BOV for a Turbo Diesel, unless you are running huge amounts of boost. The way a diesel turbo and a petrol turbo engine work are very different. It’s like saying Cantonese cooking & Sichuan cooking taste the same.

Okay, this is how diesels run:

Air is drawn into the cylinders and is compressed by the pistons at compression ratios around 18:1, much higher than those spark-ignited (petrol) engines. Near the end of the compression stroke, diesel fuel is injected into the combustion chamber through an injector (or atomizer).

The fuel ignites from contact with the air that, due to compression, has been heated to a temperature of about 700–900 °C (1300–1650 °F). The resulting combustion causes increased heat and expansion in the cylinder which increases pressure and moves the piston downward.

The vehicle needs all the air that it’s turbo can supply. It essentially compresses air in the cylinders, so no combustion occurs until the diesel is introduced.

Having a BOV will make the compressor work a lot harder to build the pressure. There is a loss in performance when the gears are shifted. After the 2nd & 3rd gear, you may find yourself losing even to a Kia Picanto.

Diesel engines do not have throttle plates to control engine speed (unlike a gasoline/petrol engine which has a butterfly valve within the throttle mechanism). Engine speed is controlled by regulating the quantity of fuel injected into the cylinder during the power stroke, regardless whether by indirect injection or common rail injection.

Truth is, any modification that raises the amount of fuel and air put through a diesel engine will increase its operating temperature, which will shorten its life and increase its service interval requirements.

Most modern diesel engines have their fuel injection rates electronically controlled, so their torque is more or less equal, if not better, than petrol/gasoline driven cars.

Well, my good friend still wanted to hear the ‘PSSSST’ of the BOV. Talk about Audio porn for a petrolhead. The solution is here, at Saber. I’m not gonna write about it because it’s a dump valve simulator and it’s pretty self explanatory"

MS 87 PIJ 08-05-09 18:06
Re: Blow Off Valve
 
BiriV ce motor ai ai BOV pe el ?


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