The Bishop Rotary Valve - F1

[kach22i]

Nice 5-page pdf on what was done on an F-1 car.

http://home.people.net.au/~mrbdesign/PDF/AutoTechBRV.pdf

First found here:
http://carnuts.us/viewtopic.php?t=1542

[legion]

Sounds similar to Coates...

[legion]

So F1 banned a new technology before it had a chance? Go figure...

The article doesn't contain a good picture of how the valve works, IMO.

[2.7RACER]

Interesting article.
The intake mixture flows thru one end of the cylinder and the exhaust flows out the other end.
The cylindrical tube is cam and valve in one piece.
Driving several in a bank of cylinders would seem to be the challenge as the rotating tube valve is turned 90 degrees to the engine rotation.
Obvously this provides a solution for extreme RPM's as seen in F1 engines.
The question is does this provide a solution for production engines at one third or one half the rpms?
Can it be built with less and cheaper parts?
Can the cylindrical tube be sealed effectively at head temperatures?
What keeps the results of combustion, carbon, etc, from the moving surface of the cylindrical valve, resulting in interference with the machined portion of the head?
Picture three tubes about the size of a toilet paper roll spinning above each cylinder at 4000 rpm, (half engine speed), and the drive to each of the tubes.
Now picture how you would seal these tubes in the head, while providing proper lubrication to the rotating tubes.
What would be the best material for this tube with intake temps at one end and exhaust temps at the other? Ceramic?
The F1 engineers could use this as the engines need only last a few hours with whatever exotic material, read super expensive, would work.
I also don't understand the claims for higher compression ratios.
Frankly for me, this makes a Wankel look better and simpler.
I'm sure others can offer more thoughts on this subject.

[bigbrotherjohn]

Where does the spark plug go?

[Joeaksa]

We have used rotary valves for years on two stroke racing motors. Worked very well and very high rpm's.

Agree with the comment about F1. It should be at the top of the developement and not frozen. Mosley and Bernie at their best again...

joe

[fastpat]

There's an interesting model airplane engine that uses a rotary valve technology. The RCV, rotary cylinder valve engine. They have one that's more conventionally oriented, with the cylinder 90 deg. to the crankshaft centerline, but the cylinder still rotates for valve function.