DiesOtto, the first CAI petrol and diesel hybrid engine?

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Christophe
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DiesOtto, the first CAI petrol and diesel hybrid engine?




by Christophe » 12/05/10, 16:38

Seen in this document: https://www.econologie.com/combustion-es ... -4264.html

It already dates from the end of 2007 but it is a concrete application of the development of new combustion modes:

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Excerpt from an article on Motor Nature:

To put it simply, let's write that in everyday use, this engine works like a diesel. The controlled ignition is only used for cold starts, and for high revs, such as above 3500/4000 rpm *. You have to imagine driving a diesel, with the frugality of a diesel, but if you push the accelerator, this diesel turns into petrol, because suddenly the candles start to make sparks, and the engine speed can reach 6000 rpm *!

http://www.moteurnature.com/actu/2007/D ... ssence.php

Video presentation: https://www.econologie.com/presentation- ... -4265.html

It uses a variable compression ratio AND a variable distribution.

It's a gasoline engine but we can imagine (if the mechanics support it) "electronically transforming" it into a 100% diesel engine ... in short, does it look like the 1st gasoline AND diesel hybrid engine?

More:
- https://www.econologie.com/combustion-es ... -4264.html
- https://www.econologie.com/motorisations ... -3717.html
- https://www.econologie.com/forums/mce-5-le-m ... t7283.html
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by Flytox » 12/05/10, 22:51

Bof! As usual, in the pure line of our usual crooks (Europeans, Americans and others) who want to make us believe that it is an improvement to consume 5.3 to 6 liters per 100 km!

Solution: orgy of power and technology so as not to do better (or even worse) than what has already existed for years, from the point of view of consumption and pollution, and obtained with simple economical and proven technologies. :frown: : Mrgreen:

They are strictly in the same impasse as BMW with their latest big bogus ultra-technological crap.
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by Christophe » 13/05/10, 11:42

Rooh not funny the Flytox! But you're right on the bottom ...

Now it's always good to be aware of "what is being done" or at least "what is trying to be done" ...

I would like to know the specific consumption of diesotto ...
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by Remundo » 13/05/10, 13:36

The CAI is tricky, especially with the piston / connecting rod / crank kinematics.

But it's interesting.

I still agree with the opinion of Flytox, we are still in the debauchery of power. All of this would be so much better on a small car. : Idea:
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by chatelot16 » 13/05/10, 13:58

The DiesOtto which will be presented at the Frankfurt Motor Show will be an 1800, 4 cylinder. Or a small engine, but which gives 238 hp


on which 238hp car can be useful ???

there are big trucks that don't have so many ...

and it's not even a real diesel, with a compression ratio higher than what it takes to ignite: therefore injection at pmh ... it is an engine powered by the intake like a petrol and a rate piloted variable compression so that self-ignition takes place at the right time

the description does not say if it is done mechanically by a complicated trick in place of the simple connecting rod, they speak of valve with electronic control: it can be simply done by reducing the time of opening of the intake valves

the mixture of petrol and diesel could be simpler: the diesel cannot exceed a certain speed: the sprayed diesel does not have time to burn: sending petrol in the intake makes it possible to run faster because this petrol arrives in vapor well mixed in the cylinder: problem sending gasoline in a diesel which has a compression rate too strong made self ignition before the pmh

except if petrol is only used at high speed, or the filling is bad therefore the lower compression ratio

so a gasoline injection only for occasional peak power at high speed could be simple and make it possible to settle for an even smaller diesel

I'm talking about a smaller one: 30hp instead of 60 not 238! so a 30hp diesel, which can sometimes make 60hp petrol ...

it would rather be an idea for an aircraft engine ... diesel for economy in cruising, gasoline for power at take-off: double power system to maximize reliability

or an idea for a multi-fuel cogeneration generator: real diesel to use vegetable oil, compression reduction by intake to use methane or gasifier
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by Christophe » 13/05/10, 16:46

chatelot16 wrote:on which 238hp car can be useful ???


On the one I would never have : Cheesy: : Cheesy:

Do not prevent 5.3 is not the consumption of a 2 hp 23.8Cv from 40 years ago.

I am not for the race for power / torque but we have to admit that the engine R&D is progressing (well) ... finally we will not repeat the debate on the car of the future

In addition it is downsizing so we should be happy but it is true that it is insufficient ... remains more than removing 2 cylinders to get something probably more fun! : Cheesy:
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