On Fri, 29 Nov 2002 13:26, you wrote: > hi, how does the spark know how much voltage is required? do i have to tell > it? if you have a coil that puts out 60,000 then thats what it will put > out at the plug. how come, ive had ign systems in top condition, then > changed over for a high voltage performance coil ( mallory, for instance) > and there was a NOTICABLE improvement? > > that like saying, even though ya car battery is 12 volts, its actually 7 > volts..... also, isnt the spark better if it has more current?
There's more involved than just breakdown voltage. Once the spark is generated, the arc voltage drops dramatically, like to around 50V. The coil is charged to around 5A on the primary side, which equates to a secondary current of 50mA for a 100:1 turn coil. This 50mA current into 50V decays down to 0mA over a time which is related to the physical size (inductance to be precise) of the coil. The bigger the coil, the longer this decay takes, and this means more total energy is delived to the mixture - and more energy will result in a better chance for a good burn. Of course if its becoming difficult to initiate combustion then your mixture is probably ungodly lean and needs fixing first. --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
