Camless engines?

[Leon]

http://www.projecttransam.com/coates.asp

[Jezz_S13]

I'm pretty sure I have seen a hydraulic valve lifting system, infinately tuneable/mappable, but doesn't seem to have taken off cos it was 10 years ago.

Or maybe I didn't see one. LOL

[SHELLAC]

"able to hande higher than normal compression ratios"
Hmm,very interesting to see this on a turbo engine,mappable camshaft for all load conditions would surely allow turbo engines to pass the stricter emission regs that the japs are working towards,as well as providing another tuning oppertunity.

[Vez]

Ducatti's new engine that is about too (or may already be in) production is camless...

I believe it uses solenoids (or maybe pneumatic) to open and close valves.

This is superb for a number of reasons: Emissions are cut, Power is increased, and the overall valve train efficiency is increase as TRUE variable valve timing can be made a reality!

This really is the way forward for car engines too!!!

[Jezz_S13]

Originally posted by Vez
Ducatti's new engine that is about too (or may already be in) production is camless...

I believe it uses solenoids (or maybe pneumatic) to open and close valves.

This is superb for a number of reasons: Emissions are cut, Power is increased, and the overall valve train efficiency is increase as TRUE variable valve timing can be made a reality!

This really is the way forward for car engines too!!!

Cool so I did see one before. Phew, I was sure I had but a breif scan on google showed nothing so began to believe I was imagining it.

[Martin T]

BMW's new 4.4 litre "valvetrovic" engine does this - it has no throttle butterfly and just adjusts the valve lift for the throttle. It has 280 BHP, and does 35 MPG!! in a near 2 tonne car!
Lancia have designed a 2.4 litre engine like this, and I think its now in some of their production cars.

[Chris]

iirc trabants aint got valves:eek: :eek: :eek: :p :p :D :D :D

[Dave_S]

Quote from that page ....



Bench-marking a 5.0 Liter engine from a Lincoln, the stock Ford casting (when tested at 28 inches of H2O) flowed approximately 180 cfm on the intake port at static. The rotary valve for that engine in comparison flowed a whopping 319 cfm at the same test pressure. Equipped with the poppet valve head, the Lincoln engine dynode at 260 hp and 249 lb-ft of torque. When equipped with the CSRV head at the same 5,500 rpm test protocol, it made 475 hp and 454 lb-ft of torque, with no changes to the block or rotating assembly.


FUUUUUUUUUUUUCCCKKKKK!!!

Dave

[dunc]

Originally posted by Martin T
BMW's new 4.4 litre "valvetrovic" engine does this

Fairly sure the new 318ti has this too? Its not that powerful though but its supposed to be very efficient. Could be wrong on this one, it could be a similar technology.

BTW - feck me at power increase on Lincoin thingy majiggy :eek: