ESE's works engine tuner

**jonny quest** · 22nd January 2016, 19:18

The hole in piston between rings is what lubricates rings. Fed by crankcase.

**jonny quest** · 22nd January 2016, 19:23

Someone mentioned gudgeon pin being high in piston. It's actually low on piston.

No crazy hinged connecting rod. The side loading of piston is reduced 33%. A unintentional added benefit.

**Norman** · 22nd January 2016, 19:25

I have seen two pictures from the combustion in a cylinder process of a two stroke engine where the first are from spark ignition the engine at 9000 rpm, the second is the same engine running at 17 000 rpm with HCCI. It proves to me that it is possible. The pictures are from a university nearby me (no secrets though). Maybe someone else here has also seen the pictures. I will see if I eventually can find out more, it would be interesting to know if they could get the HCCI combustion to be stable.

**wobbly** · 22nd January 2016, 19:53

The Ryger has ( and has to have as well ) a stock PVL homologated straight line analogue ignition system.
Its static timing could well be altered ( legal - yes ) to allow HCCI later in the rpm range.
But I say again - utter bullshit that the stock 54.5mm looking crank and the stock looking 90mm rod survive at 30,000.
My favorite saying is "the dyno doesn't lie " but straight out inertial physics cant be ignored either.

**jonny quest** · 22nd January 2016, 20:10

I'm just starting to look at pics. Very short transfer tunnels.

I'm guessing the reason for reduced emissions, there's nothing left in cranckcase or tunnels for short circuiting!

26mm crank pin... plain bearings...it can be done Wobbly.

No one has mentioned for how long it will last yet.

**jonny quest** · 22nd January 2016, 20:11

Is there a pic of crank? Bearings?

**M.Holder** · 22nd January 2016, 20:39

Long time lurker...finally a post to get started in this fantastic thread

About intervals:

Click image for larger version.

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**Muciek** · 22nd January 2016, 22:03

If you watch forum via tapatalk it shows in thread top either ryger piston or that 2nd picture when cylinder was removed, so Frits You should pm admin about that.

**yesyes** · 22nd January 2016, 22:08

Originally Posted by M.Holder

Long time lurker...finally a post to get started in this fantastic thread

About intervals:

I can see some guys running mad

nervous breakdown to come

**Lightbulb** · 22nd January 2016, 22:29

I'm not seeing any photos. What am I doing wrong on tapa talk?

Sent from my SM-J500Y using Tapatalk

**m4r** · 23rd January 2016, 00:51

HCCI has no high requirements for the ignition

the key to HCCI is the right mixture, where you have much more possibilities now because you don't need to run rich to lubricate the crankdrive anymore.

**Frits Overmars** · 23rd January 2016, 02:01

Originally Posted by m4r

HCCI has no high requirements for the ignition. the key to HCCI is the right mixture, where you have much more possibilities now because you don't need to run rich to lubricate the crankdrive anymore.

You are right in saying that HCCI has no requirements for the ignition. With the right engine configuration it doesn't even need an ignition at all, as Flettner has recently proven. He has also proven that mixture strength is anything but critical. If there is enough fuel, it will consume all the air. If there is enough air, it will burn all the fuel, even if the mixture is so lean that a spark would no longer be able to ignite it.
In that respect HCCI is much like a diesel. But unlike a diesel it is capable of ludicrous rpm levels, as Flettner found out in blank amazement. And at the time there was not even a regular fuel supply any more; the engine was only running on the two-stroke lubrication oil collected in the crankcase

.

**adegnes** · 23rd January 2016, 02:10

Originally Posted by Frits Overmars

You are right in saying that HCCI has no requirements for the ignition. With the right engine configuration it doesn't even need an ignition at all, as Flettner has recently proven. He has also proven that mixture strength is anything but critical. If there is enough fuel, it will consume all the air. If there is enough air, it will burn all the fuel, even if the mixture is so lean that a spark would no longer be able to ignite it.
In that respect HCCI is much like a diesel. But unlike a diesel it is capable of ludicrous rpm levels, as Flettner found out in blank amazement. And at the time there was not even a regular fuel supply any more; the engine was only running on the two-stroke lubrication oil collected in the crankcase

.

Where has Flettner documented his endeavors?