Supercharger

Post by **Hondata** » Fri Apr 17, 2015 2:46 pm

R-12914 wrote:The Supercharger is after the throttle body (without a blowoff valve!)

Is it blowing through the throttle body or drawing air through it? Both configurations have been used with the rotrex.

R-12914 · Post by **R-12914** » Fri Apr 17, 2015 4:37 pm

Hondata wrote:Is it blowing through the throttle body or drawing air through it? Both configurations have been used with the rotrex.

The supercharger is drawing air through the throttle body!

construction scheme:

air filter box with air filter-> throttle body -> rotrex supercharger (compression) -> intercooler -> intake manifold -> engine

Rotrex_SC.jpg

typer86 · Post by **typer86** » Fri Apr 17, 2015 8:45 pm

I have the same system inside here a picture of my engine sc bay.

received_866478120050474.jpeg

Post by **Hondata** » Sun Apr 19, 2015 5:03 pm

A log intake manifold without runners or intercooler! Does the IAT read the air temperature?

This has got off topic - if you want to make a thread about the supercharger then I'll move the posts to a new thread.

typer86 · Post by **typer86** » Mon Apr 20, 2015 12:25 am

Hondata wrote:A log intake manifold without runners or intercooler! Does the IAT read the air temperature?

This has got off topic - if you want to make a thread about the supercharger then I'll move the posts to a new thread.

In our build, it is still intercooled. What do you mean "without runners"? Sorry I don't know what do you mean.
Refer to: TTS-Performance Supersport - only we have the stock MAP sensor installed
http://www.tts-performance.co.uk/#!civi ... sport/crmg

Schema of passing air from outside to the car

1. Fresh air will be drawn from the compressor (rotrex).
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2. The air will will pass the OEM Airbox then throttle body, then it comes in to the rotrex supercharger
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\ /
3. After the compressing of the air from the rotrex supercharger is will pass the intercooler
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\ /
4. Then it pass the custom intake manifold
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\ /
5. Then to the engine (done)

Post by **Hondata** » Mon Apr 20, 2015 7:05 am

I've split off all the supercharger related posts into a new topic, but I can't actually determine what the problem is that you're having. You should re-state the issues.

What do you mean "without runners"

The intake manifold has no runners. There's going to be a lot of cross cylinder charge contamination, charge filling will not be consistent between cylinders and the best cylinder filling 2rd harmonic engine speed is probably over 40,000 rpm.

typer86 · Post by **typer86** » Mon Apr 20, 2015 7:44 am

Hi Hondata,

I don't know if we think the same.

-------------------------------
That is the case:
The Problem is still present and I am interested to find a solution to adjust the fuel gauge and the live fuel calc after modifie the car with the rotrex supercharger.
--------------------------------

My question is simple.
Why the ECU display in normal drive 3/100 KM and why the fuel gauge dropps to empy with crying for refuel so fast after hit the half of the tank!

In the screenshot you see the standard disply without rotrex and without programming: (all default)

fuel_rotrex.PNG

In the video you can see what I mean. I filmed my fuel consumption.
https://youtu.be/S28DlbIQkqo

typer86 · Post by **typer86** » Mon Apr 20, 2015 7:48 am

Next question:
Why the throttle body flow parameter will not be increased if the supercharger sucking more air to the throttle body.

Please keep us up to date

Post by **Hondata** » Mon Apr 20, 2015 2:54 pm

That's why I split up the topic - the supercharge throttle flow is not related to the fuel gauge.

With the throttle body if you have a suck through supercharger system then yes, you need to increase flow per opening angle values.

But going back one step, what is the problem with the supercharger system that you are trying to fix? Without any intake manifold runners you are going to get odd behavior at certain rpm as the fuel ends up in the wrong cylinder. The fuel injector spray pattern becomes critical. We've seen this on the JR euro setup too.

typer86 · Post by **typer86** » Mon Apr 20, 2015 8:31 pm

OK at this point I can say we have no problem. The installed system run's perfectly.

This was my initial question if the ecu need a adjusted value of the throttle body to calc correctly the fuel because more air will pass the throttle body and the air mass sensor.

I am disappointed and lost without help from you because nobody can help me of tuners. All tuners only can tune the engine but this is finished. We need finally to adjust the display of the fuel consumption Etc.

1. I don't know why the ecu display 3 liters of 100 in normal driving.
2. Fuel gauge drops so fast that I am feared I can not reach the next gas station.
= I have no idea which settings must be customized in flash pro. That's all.

R-12914 · Post by **R-12914** » Tue Apr 21, 2015 12:07 am

For example:

I have run 60 km on this Tank fuel and the fuel level gauge is on top (max).
But it must be on 7/8 on the gauge.

With one tank-fuel i run 400-430 km and in real 11-12 liters/100 km.

But on the bordcomputer i have 4,6 liter/100km and 1191 km now to drive until next tank fuel!

Post by **Hondata** » Tue Apr 21, 2015 7:37 am

OK at this point I can say we have no problem. The installed system run's perfectly.

What was the problem with the throttle body then? This is jumping all over the place.

Can you post the fuel questions in the fuel topic? Also I would need:
- the injector type & size
- the calibration
- observed fuel economy vs real fuel economy
- what effect changing the FlashPro setting for fuel economy has over the dash reading

R-12914 · Post by **R-12914** » Tue Apr 21, 2015 9:04 am

Hondata wrote:
Can you post the fuel questions in the fuel topic?

Yes, no problem!

Hondata

Supercharger

Re: fuel level gauge

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