4-stroke eng. exhaust pipe chamber (?)
4-stroke eng. exhaust pipe chamber (?)
(OP)
I spotted an additional exhaust runner resonance chamber on BMW 450cc motocross bike engine, see provided link.
I have tried to wrap my head around the design function of said chamber with no results. This does not seem to be an anti-reversion chamber.
I have however seen similar chambers on 4-cylinder naturally aspirated rally car engines. Chambers are there to even out torque curve. They're connecting cylinders 1-2 together, and 3-4 together (if my memory serves me right).
Would this BMW factory racing exhaust chamber serve same function?
http://ju hasalminen .pictures. fi/kuvat/M otorcycle% 20Exhibiti on%2C%20Fi nland%2C%2 0Feb%20%28 MP%202009% 29/7H1B217 9.jpg/full
http://ju hasalminen .pictures. fi/kuvat/M otorcycle% 20Exhibiti on%2C%20Fi nland%2C%2 0Feb%20%28 MP%202009% 29/7H1B198 9.jpg/full
I have tried to wrap my head around the design function of said chamber with no results. This does not seem to be an anti-reversion chamber.
I have however seen similar chambers on 4-cylinder naturally aspirated rally car engines. Chambers are there to even out torque curve. They're connecting cylinders 1-2 together, and 3-4 together (if my memory serves me right).
Would this BMW factory racing exhaust chamber serve same function?
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RE: 4-stroke eng. exhaust pipe chamber (?)
RE: 4-stroke eng. exhaust pipe chamber (?)
Please follow the link below, and while on the picture hosting site, click "VIEW FULL SIZE" -option (located on top right corner).
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RE: 4-stroke eng. exhaust pipe chamber (?)
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RE: 4-stroke eng. exhaust pipe chamber (?)
RE: 4-stroke eng. exhaust pipe chamber (?)
Swiss