Valve Crossover.....
Thread Starter
Joined: Jan 2005
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From: Hotel this week, hotel next week, home whenever...
Valve Crossover.....
...pointers to what, when, why, where and how please......
Suspect it has something to do with ICA and both valves being open at the same time, but clarification would be nice.
Thanks chaps/chapesses
Suspect it has something to do with ICA and both valves being open at the same time, but clarification would be nice.
Thanks chaps/chapesses
Joined: Feb 2007
Posts: 110
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From: Perth
basically both valves open earlier and shut later than BDC and TDC.
the way bob tait explains it doesn't really sound right but if you can accept that the gas has a "mass" and therefore "inertia" keeps it exiting/entering the cylinder after the piston has reached TDC/BDC
hope that kinda helps
the way bob tait explains it doesn't really sound right but if you can accept that the gas has a "mass" and therefore "inertia" keeps it exiting/entering the cylinder after the piston has reached TDC/BDC
hope that kinda helps
Thread Starter
Joined: Jan 2005
Posts: 1,490
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From: Hotel this week, hotel next week, home whenever...
Thanks Swanie....
Thought that's what it was but never heard it refered to as 'cross-over'.
Thought that's what it was but never heard it refered to as 'cross-over'.
Last edited by Duchess_Driver; 25th February 2007 at 13:06. Reason: spellign
Joined: Feb 2006
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From: Station 42
'Lead', 'lag' and 'overlap' are the more common terms re valve timing design, DD. You might find this interesting:
http://www.compcams.com/Technical/TimingTutorial/
http://www.compcams.com/Technical/TimingTutorial/
