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Hi Steve,
Really cool article. Right off the bat you say
"The whole concept of ignition advance is centered on charge burn time and burn time can be broken down into two categories. These are ignition delay and the bulk burn rate. The goal we are trying to achieve is to get peak cylinder pressure to occur at about 15 degrees past TDC on the power stroke. If we make that goal then the three main issues of torque, hp and fuel economy will, from the ignition stand point at least, be maximized."
So if one were to measure peak cylinder pressures v.s rpm, would the main goal be to find "the" advance curve that keeps this pressure at 15* or so (the specific engines' need). What else would need to be considered, e.g varying loads?
Maybe I'm stating the obvious, but hey, I'm a garage sweeper ;-)
regards,
nick
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