prodrive variable compression ratio engine

[tybalt]

http://www.gomecsys.com/uk/index.html

Interesting - just saw an advert in my copy of professional engineering. They are working with prodrive on the system. Claimed 30% fuel efficiency improvement. Works best with a small turbocharged engine.

Interesting technology

[NoelWatson]

tybalt said:

http://www.gomecsys.com/uk/index.html

Interesting - just saw an advert in my copy of professional engineering. They are working with prodrive on the system. Claimed 30% fuel efficiency improvement. Works best with a small turbocharged engine.

Interesting technology

I recall Saab doing variable compression a few years back

http://www.saabnet.com/tsn/press/000318.html

[clonmult]

tybalt said:

http://www.gomecsys.com/uk/index.html

Interesting - just saw an advert in my copy of professional engineering. They are working with prodrive on the system. Claimed 30% fuel efficiency improvement. Works best with a small turbocharged engine.

Interesting technology

Wonder if something like this could be used with the merc diesotto engines, or would the technology be mutually exclusive?

[dnb]

A turbo car with off-boost efficiency - got to be a winner!

[tybalt]

NoelWatson said:

I recall Saab doing variable compression a few years back

http://www.saabnet.com/tsn/press/000318.html

Yeah, I read about the Saab thing here:
http://www.channel4.com/4car/ft/feature/feature/18...

but this seems a lot more elegant than the Saab thing. The Saab version is a cylinder head on a hydraulic actuator with a rubber bellows gasket joining it to the rest of the block. That's just not pretty at all.

This system involves connecting the big end to an epicycle allowing the stroke of the piston to be varied - seems like a more elegant solution to me.