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https://old.autonerdz.com/cgi/yabb2/YaBB.pl General Public Area >> PicoScope >> compression wave form https://old.autonerdz.com/cgi/yabb2/YaBB.pl?num=1189803311 Message started by william on Sep 14^th, 2007 at 1:55pm

Title: compression wave form
Post by william on Sep 14^th, 2007 at 1:55pm

hi guys what does this expanded area on the area after bdc it is a audi tt eng code apx 225 bhp dohc 5 valves per cylinder thanks

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Title: Re: compression wave form
Post by mwebb on Sep 15^th, 2007 at 8:17pm

there are two instances of BDC in that running compression waveform -
which one ? 180 degrees or 540 degrees ? you need AES ANNOwave

all that is broken down in the FLS thread in this forum , happy reading

Title: Re: compression wave form
Post by mwebb on Sep 29^th, 2007 at 7:37pm

imagine this verticle cursor set overlayed to match you running compression waveform so that 0 on the cursors equals the first TDC peak on the running compression and 720 degrees equals the 2nd TDC peak on the running compression waveform , there is another TDC at 360 degrees as well but no pressure there .
at 180 degrees is BDC then at 540 degrees BDC again,

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