Prechamber Mod "Flame" Front

~~ForcedInduction~~

Banned

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01-25-2011, 08:44 PM #40

(01-25-2011, 02:57 AM)dieselboy Lol I remember when I thought I knew it all too.

*Information removed to stop somebody from crying.

(01-25-2011, 11:01 AM)OM616 That is better.

What is better, the line I just repeated from a post I made a few weeks ago? You must have ignored that one too.

Quote:Did you intend to imply that when Jeemu starts his engine that it instantly, and only makes 220hp pre liter?

No, stop attempting to put words in my mouth it only makes you look like a troll.

Quote:In my last post, I posted that I measured cylinder compressed gas temperatures in the 900+ degree F range, pre-injection, I have not posted, but during high speed piston velocity tests, I measured cylinder compressed gas pressures in upwards of 1000PSI and prechambre pressures (at the same time) of 280 to 315PSI range. The closest pressure differential was below the 2000 RPM range.

I'm calling bullshit, again.

Quote:The manuals I have do not say what the hole diameter is or how many there are.

Just the FSM.

(01-25-2011, 02:59 PM)casioqv I wonder how these engines would run with the entire tip of the prechamber cut off

They wouldn't.

Quote:Overall it actually sounds like IDI engines are better for high performance

They are. People use IDI for two reasons; 1- Its cheaper. 2- They make power at higher RPMs, which inflates horsepower numbers while making low torque (The same way an F1 engine can make 900hp with only ~250lb/ft torque).

Quote:but DI engines may be better for normal driving where efficiency and torque trump peak horsepower.

Correct, right off the bat you get 15% more power and efficiency per/L by ditching the prechamber. The off side is more noise, the reason MB stuck with IDI for so long when companies like Audi/VW had gone DI 6 years earlier.

Quote:and sometimes the simplest idea that might seem stupid at the time

*Information removed to stop somebody from crying.

(01-25-2011, 07:09 PM)ronnie However at some point it must also hinder movement of fuel to the combustion chamber, ie cylinder.

Hence the reason high-output people like Jeemu have merit in altering the hole diameter.

Quote:However most of us on this forum are trying to get more power

And you think I'm not?

Quote:So at what point are the holes to small to allow the power we are trying to achieve?

(01-25-2011, 02:51 PM)jeemu This is need to done when go over 100hp/cyl

This post was last modified: 01-27-2011, 05:09 PM by ForcedInduction.