Tuning Ideas: Genius or Nonsense? What Do You Think?

Hello.

I've had a tuning box installed in my car for a while now, and it's been distorting the fuel temperature reading. I recently read that this might not be as effective in the summer or when the engine is hot, due to the temperature difference.

Sure, here's the translation:

'So, my suggestion is:'

1) Fuel cooler: If I install a cooler (e.g., an oil cooler used as a fuel cooler ) in the fuel line leading to the engine, it should work. Colder fuel = better performance. Or is the cooling capacity not sufficient?

2) Luftvorkülung: Einen LLK vor dem Luftfilter kasten einbauen. Dann wäre die Luft schon vor gekühlt, es entsteht kein größeres Turboloch wie es passiert wenn man ihn nach dem Lader einbaut (bei Vergrössernung oder zusatz LLK). Ausserdem müßte der LMM bessere werte bekommen und mehr einspritzen? Oder???

What do you think about it?

Best regards, Rotterlie.

1) Fuel cooler: If I install a cooler (e.g., an oil cooler used as a fuel cooler) in the fuel line leading to the engine, it should work. Colder fuel equals better performance. Or is the cooling capacity not sufficient?

2) Luftvorkülung: Einen LLK vor dem Luftfilter kasten einbauen. Dann wäre die Luft schon vor gekühlt, es entsteht kein größeres Turboloch wie es passiert wenn man ihn nach dem Lader einbaut (bei Vergrössernung oder zusatz LLK). Ausserdem müßte der LMM bessere werte bekommen und mehr einspritzen? Oder???


1: Before starting your journey, fill up your car with fresh gasoline. It usually comes from an underground tank, which is about 4 ± 0.5 °C cooler in the summer. This will save you the cost of a more expensive fuel grade!

There seems to be a misunderstanding; it should be 'KvLF' (which stands for 'radiator before air filter').

Here's the translation:

'It wouldn't be that expensive! You can find oil coolers for around €20 on eBay, and we can do the installation ourselves.'

Here's the translation:

'Regarding point 2: There's no misunderstanding. I simply meant to install the same type of engine as the one already in the Golf 4, but on the other side.'

'Regarding point 2: There's no misunderstanding, I just meant to install a similar LLK (liquid cooling system) on the other side, like the one that's already in the Golf 4.'

There is no such thing as a perpetual motion machine.
To put it another way: your uncompressed air passes through a cooler.
nicht unter Umgebungstemp gekühlt. You must first...
compress -> cool -> expand.
But compressing something requires energy...
=> Nonsense, to get back to your actual question

I was actually thinking more about the cool breeze you feel while driving.

Okay, here's the translation:

"Good man, the cool air flowing into the car has the same temperature as the cool air being drawn into the air filter. That's actually quite logical... why should the air being sucked in be warmer? You could even create a tube from the hood to draw in air, which would eliminate those two degrees of waste heat from the engine... you just have to retract it when it rains!"


----> I agree with my predecessor: That's nonsense!

... all that remains is the freshly filled and earth-warmed Friesel!!! (#1)

"However, even the cold diesel is likely to be short-lived. If the return flow in the PD system reaches temperatures of nearly 90°C, which are then perhaps cooled down to 60°C as standard, it's only a matter of time before the entire volume is warmed up... I think the flow rate is probably quite high. From this perspective, a larger or additional diesel cooler might be the most sensible solution... whether it's worth it is, of course, questionable."

'Regarding point 2: There's no misunderstanding, I only meant to install a similar LLK (low-temperature coolant) on the other side, just like the one that's already in the Golf 4.'

There is no such thing as a perpetual motion machine.
To put it another way: your uncompressed air passes through a cooler.
nicht unter Umgebungstemp gekühlt. You must first...
compress -> cool -> expand.
But compressing something requires energy...
=> Nonsense, to get back to your actual question .

Hi,

The cooling process in the air filter area actually works automatically. Due to the flow resistance, a negative pressure is created in the airbox. This negative pressure causes the air to expand, and as it expands, it cools down. Any further questions?

Greetings.

Eike.

eike wrote:

The issue with cooling in the air filter area actually works automatically. Due to the flow resistance, a negative pressure is created in the airbox. This negative pressure causes the air to expand. And when the air expands, it cools down.

Then, a cooler located in the air filter area would need to warm the expanded and cooled air...

Best regards,
Uwe

The cooling process in the air filter area actually works automatically. Due to the flow resistance, a negative pressure is created in the airbox. This negative pressure causes the air to expand, and as it expands, it cools down. Any further questions?


Yes, how many degrees Celsius does that correspond to with my measured differential pressure of 1.5 mbar (between the air intake and the outside air)?

CU Gremlin.

Ultimately, nothing, because the air is subsequently re-compressed by the turbocharger. This compensates for the cooling effect.

Best regards,
Uwe

That's not quite right...

The temperature increase caused by the charger remains relatively constant.
As cooler air enters, it also exits cooler, much like a ride in the winter, which is quite impressive.

man könnte natürlich die klimaanlage zweckentfremden... MHAHAHAHA.

CU Gremlin.

I have to disagree with you again. When air expands, the temperature decreases. The charger compresses to an absolute value. However, since the incoming air has a lower pressure (or is already at normal pressure, and therefore also has the initial temperature), the subsequent compression is greater, and thus the temperature increase is also greater.

Best regards,
Uwe

@Rotterli

I think we've all reached a dead end. However, I still see three possible ways forward.

#1 - Seasonal license plate.

#2 - Refueling for the winter chill.

#3 - Two tuning boxes connected in series. However, please note the extremely high return temperature of the Friesel unit. Temperatures of around 200°C will occur. For safety's sake, you should replace the original pipes with galvanized brass tubes. These are available at a low price at OBI (e.g., rods for tomato plants).

Hi everyone,

What about the following consideration?

Assumption: the air heats up to over 110°C in the turbocharger at the outlet (I think I read that somewhere before).

If I inject water finely distributed into the intake air before the turbocharger, then this water should absorb heat energy during the compression of the air in the turbo. This might prevent the intake air temperature from rising above 100°C, because water (even at 0.9 bar) cannot be heated much above 100°C.

I understand that water injection systems exist, but they typically inject water behind the turbocharger.
What would likely be the consequence of such a measure if one were to inject fuel directly before the turbocharger?
Is it worth pondering?

Greetings.

Eike.