Interesting Research Paper

[lenny]

Interesting reading, a few ideas here.
http://www.iop.org/EJ/article/1742-6596 ... 45_008.pdf

[cobbadiggabuddyblooo]

Way to go...Bit like the Tai Chi of motorcycle Cylinders and breathe in breathe out

[steve speed]

my head hurts now ,,,,but it dont take much

[stormy]

Suzuki were doing the swirly stuff years ago, called it TSCC (Twin Swirl Combustion Chambers).

[lenny]

I think your a bit confused,Stormy.All engines rely on some form of "swirly stuff" for in cylinder mixture distribution. Tscc is one type of "swirly stuff" thats been used since the 1930's on some 4 valve heads.Yamaha 5 valve heads are characterised as low velocity tumble flow .Although they can give excellant flow figures , the in cylinder mixture distribution is poor meaning they don't make as much power as the flow figures may suggest. This paper is about ways of improving mixture distribution in a five valve cylinder.Direct injection, twin plugs and swirl with tumble is something I will be trying in the tdm based engine I will be building when I can find a suitable fuel pump that doesn't cost more than the bike.

[haggisbash]

If my often faulty memory serves me well I remember reading somewhere that the TSCC system used by Suzuki was actually developed by Fiat and Suzuki were using it under licence.