Very good news for gazoline engine lovers

[360modena]

Seen on M6 Turbo on saturday...

It Seems a french engineering society based on Lyon had developped a revolutionar engine that consum less than 40% gasoline than a normal one.
Their solution: a variable combustion chamber, which would thus reduce the air-gasoline mixture when one does not need any largely (phase of deceleration, congestion...). They have a prototype which works, and which would be industrialisable in great series. PSA (Peugeot Citroen group) is very interrested in the solution. And a the cost will probably be 300€ expensive than a classic engine.

I love this news :D :D :D :D

[|Nuno|]

Great!!:D :D However, I think I've heard/seen this before... Can't remember the details, but I think the main concept was the same.

[23790554]

same concept but hopefully better execution

[number77]

"displacement on demand"

[Refefer]

"displacement on demand"

Doesn't sound like it, since they arn't cutting off any cylinders... sounds more akin to Fiat's UNIAIR system.

[RC45]

"displacement on demand"

Doesn't sound like it, since they arn't cutting off any cylinders... sounds more akin to Fiat's UNIAIR system.

Actually this system does sound lile true displacement on demand... as in increasing the size of the combusiton chamber on the fly.

The current method simply turning off cylinders should probably be called cyinders on demand.. ;)

[Refefer]

"displacement on demand"

Doesn't sound like it, since they arn't cutting off any cylinders... sounds more akin to Fiat's UNIAIR system.

Actually this system does sound lile true displacement on demand... as in increasing the size of the combusiton chamber on the fly.

The current method simply turning off cylinders should probably be called cyinders on demand.. ;)

Somehow I missed the "variable combustion chamber" part...er... I can't even begin to imagine how someone would accomplish that... any thoughts or articles on it?

[Wutputt]

It has been done before, but hopefully it will be going into production this time :D
The last effort was Saab's SVC system. They had working engines and drivable cars. But I've never heard of it the last years. They probably have gone out of money for this project.

But it seems new hope is coming from the French side. Come on gasoline engine, you can do it :D

[cooperluke]

The current method simply turning off cylinders should probably be called cyinders on demand



Yep, but only appliable to engines with a lot of cylinders, that can run smoothly with less 2 cyls working. Try putting a 4 cyl engine working on 2 cyls.. lol.. it looks like a Ducati! lolol

[mv]

gasoline engines strike back :twisted: Can't wait to see it turned into practice.

[styla21]

There are some interesting things going on in this industry atm. It is a focus point of a business i am involved in. Through some of the most insanely simple practices emissions and performance have been improved amazingly. I can post more info here if you guys are interested.

[Refefer]

There are some interesting things going on in this industry atm. It is a focus point of a business i am involved in. Through some of the most insanely simple practices emissions and performance have been improved amazingly. I can post more info here if you guys are interested.

I think it would actually do better if you made a new post with something along the lines of "New technology in the works" or something. But yeah, definately do it... It's always nice to see what's in R&D :)

[360modena]

"displacement on demand"

Doesn't sound like it, since they arn't cutting off any cylinders... sounds more akin to Fiat's UNIAIR system.

Actually this system does sound lile true displacement on demand... as in increasing the size of the combusiton chamber on the fly.

The current method simply turning off cylinders should probably be called cyinders on demand.. ;)

Somehow I missed the "variable combustion chamber" part...er... I can't even begin to imagine how someone would accomplish that... any thoughts or articles on it?

Not sure of it but I think it's based on variable pressure in the Combustion chamber. Anyway maybe this society just give essential informations and keep other tips for their new Clients

There are some interesting things going on in this industry atm. It is a focus point of a business i am involved in. Through some of the most insanely simple practices emissions and performance have been improved amazingly. I can post more info here if you guys are interested.

That's a good Idea and like said Referer in an new dedicated thread. :D

[findleybeast]

sounds interesting. hopefully its not some gimmick that's only applicable to huge engines or tiny ones

[ikon2003]

Definitely intriguing. If it works as well as advertised, I'm sure plenty of companies will be bidding for the rights to use it. 40% is a huge amount. Even if it were half that, the progress would be a great leap forward. Any more details or tech articles explaining exactly how it does this would be great.

[Skaala]

any gain or lack in hp or nm over a even sized engine?

[oantob]

great innovation, on what type of car will this engine will be used? but is the system has any weakness? like more slower accel IMO

[bmwmpower]

i heard years back about saab engine with Turbo and fuel consumtion was like in stard 4 valves cars, power was around 200 hp and more, but nothink happend