Tech question

440 Views 7 Replies 1 Participant Last post by crazydriving, Feb 15, 2002

crazydriving

Discussion Starter · Feb 15, 2002

Im trying to understand how a BLITZ DSBC works, and im reading this on the blitz website.

"The best way of controlling boost pressure is electronically, using a solenoid valve to accurately control the pressure to the wastegate(s). This solenoid valve diverts air to the wastegate(s) making them open at a higher pressure. The more air than can be diverted, the more boost can be achieved, that is why the Blitz Dual Solenoid Boost Control (DSBC) uses a two valves built into one unit to flow more air"

Could you please explain me in another way or something now that mkiv.com is down, so i can understand the meaning...btw im norwegian :O).....

please reply

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· #2 · Feb 15, 2002

there is basically an electronic valve that stays closed until the pressure you want is reached. When you hit the requested boost (right before you hit it) the electronic valve opens and lests the wastegate see the boost causing it to open.

It's basically a valve that doesn't let the wastegate open till the pressure you want has been reached.

P.S--- Tech questions go in the tech forum.

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crazydriving

Discussion Starter · #3 · Feb 15, 2002

so there is a electronic valve inside the boost controller that opens on the wanted boost preasurre?

--

" The more air than can be diverted, the more boost can be achived, that is why the Blitz Dual Solenoid Boost Control (DSBC) uses a two valves built into one unit to flow more air"

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Does it use dual valves for more flow when the wanted boost pressure is released from the boost controller?

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· #4 · Feb 15, 2002

crazydriving said:
so there is a electronic valve inside the boost controller that opens on the wanted boost preasurre?
--
" The more air than can be diverted, the more boost can be achived, that is why the Blitz Dual Solenoid Boost Control (DSBC) uses a two valves built into one unit to flow more air"
---
Does it use dual valves for more flow when the wanted boost pressure is released from the boost controller?

Yeah.. think of a solenoid as an electronic button pusher.... You put electricity into it and it and it moves out or in to open or close a valve. The DSBC has two of these solenoids.

Think of a solenoid as the deadbolt in the door of your house. When you put electricity into it the little bar shoots out and the door is locked. When you don't have electricity going to it the bar isn't out and the door is unlocked. This isn't exactly the way the boost controller works but you get the idea. It's a valve that opens and closes with electricity.

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· #5 · Feb 15, 2002 (Edited)

In the case of the SBC I-D, at least, the two solenoids are set up sequentially... one after the other in a row so less air leaks by, keeping the wastegate closed longer and making the boost response better.

Edit: it looks like with the DSBC the 2 solenoids are set up in parallel so more air can get by when the solenoids open making the wastegate open quicker.

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crazydriving

Discussion Starter · #6 · Feb 15, 2002

yes i know what a solenoid are=) Im a airplane mechanics... hehe... only turbo fan engine here though...

so this is my conclusion...

You configure the DSBC at release boost pressure at 20psi.
Until the boost preassure reach 20psi, the DSBC prevent the boost pressure to get to the waste gate. When it hits 20psi, the solenoid valve opens and let the boost pressure out the wastegates??

am i right?

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· #7 · Feb 15, 2002

crazydriving said:
yes i know what a solenoid are=) Im a airplane mechanics... hehe... only turbo fan engine here though...

so this is my conclusion...

You configure the DSBC at release boost pressure at 20psi.
Until the boost preassure reach 20psi, the DSBC prevent the boost pressure to get to the waste gate. When it hits 20psi, the solenoid valve opens and let the boost pressure out the wastegates??

am i right?

sorry, I didn't know what you did and didn't know

yeah, thats exactly what it does.

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crazydriving

Discussion Starter · #8 · Feb 15, 2002

no problem mate=)
thanks for helping me out here!

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