Friday 2010-12-17 Dev. update and Discussion

[Freycinet]

Thor, in many languages, "explosion engine" is a slightly old-fashioned way of saying internal cumbustion engine, that - I'm sure - is what Adriatic is saying.

[T}{OR]

I admit, I never heard of this expression. Adriatic and I are both from the same country - and I do not know of such (or equivalent to it) expression in my language.

Even so, the fuel inside an engine does not explode. And this is what I was trying to explain. Fuel burning inside a cylinder is a complex process determined by many factors such as cylinder/piston head shape, compression ratio (volume between top of the cylinder to TDC, and top of the cylinder to BDC), number of strokes (2T/4T), position and number of valves (or valves and fuel injectors), intake and exhaust manifold, RPM, fuel - and many many other factors...


EDIT: Call it a professional defect, but I had to reply.

[JG52Krupi]

Originally Posted by Tree_UK

Hi Oleg, will it be possible to repair your aircraft on the ground and refuel/rearm, you can do this currently in Il2 via mods and it is an excellent idea.

I thought this was already confirmed somewhere?

[Daniël]

Some people complain about the visibility of the flames, but there aren't any flames visible from the second Bf 110 in picture 10.

Are those flames only visible from very close in daylight?

[T}{OR]

Originally Posted by swiss

What would you call what a Diesel does?

Diesels are much less sensitive to knocking, although it is also an undesired effect.

Knocking in Diesel engines occurs when there are either low temperatures inside a cylinder, there is a low load on the engine (I think this is a proper translation) or with fuel that has very low cetane number. Cetane number is a measure of a fuel's ignition delay - the time period between the start of injection and start of combustion (ignition) of the fuel. If the delay is too long, the fuel will ignite when there is already too much fuel inside a cylinder - resulting in a sudden reaction accompanied with strong pressure waves and a very loud noise.

The air in Diesel engines has to be compressed below the minimum level (when compressing air its temperature rises) in order for the fuel to ignite when entering a cylinder. Before modern fuel injection, early Diesels had a combustion chamber inside a cylinder where Diesel fuel would first ignite and spread across the rest of the cylinder - this is the reason why they were so loud (very high pressures inside the cylinder and overall unbalanced/unequal burning process). In early '90-s fuel injector pumps capable of rapid dual injection in one process were introduced. This lowered the noise, and improved the burning process significantly.

Nowadays with Common rail systems (which compress the fuel up to 2000 bar) the fuel gets injected up to 5 times when the piston is at/or close to the TDC, further improving the burning process inside the cylinder. This is one of the reasons why they are so quiet and even more efficient today.

[Insuber]

Originally Posted by Osprey

Alfa lol - says it all.

I hope you skimmed the head or you'll be doing it again soon

You are OT ... and you probably ignore that the Common Rail was developed originally by Fiat-Magneti Marelli, and first introduced an Alfa Romeo 156 2.4 JTD in 1990 ... a great car and an innovative diesel engine. An incredible piece of engineering, my friend.

Back to topic:

Dear Oleg,

Flames look great now. I'm slightly tired of minor details. Please give us a bigger bone to gnaw at ... a Bf.109 video with the latest gun smoke and muzzle flash, or damage model, or ... you know waht I mean ...

Cheers,
Insuber

[giovanni the ace]

The detail put in to this is amazing and will make Storm of War a great game, thank you for all the effort.

[BadAim]

Originally Posted by swiss

What would you call what a Diesel does?

Waste your money at today's diesel prices! (at least here in the states)

OFF TOPIC

[alexei1789]

Hi,

it looks amazingly nice and in late phase, and i'm glad there's a miniature engine control, it will really help engine mgmt !

i'm wondering about "flight safety": what will happen if you fly within the gasoline trail of a damaged plane with all those nice flames coming out of exhaust pipes ? " FSHHHHHHH " ??? )

Alex

OFF TOPIC

[heywooood]

...so, Oleg has started a flame fest then???

where is the moderation? invisible in daylight I suppose....

Ilya - please cancel the project

OFF TOPIC