Initial D Misfiring System
For those of us who wondered what the heck it was…(or wasn’t paying attention)
A misfiring system (or more appropriately, an ALS, anti-lag system) is used in a turbocharged car to keep the turbo boosted when the driver lifts off the accelerator. When that happens, the ignition timing is severely delayed and the fuel/air mixture is enriched. Thus when the spark plug fires, most of mixture has already left through the open exhaust valve and combusts in the downpipe on the way to the turbo, keeping it spooled but not contributing any power to the crankshaft (and the drive wheels).
Shihab said,
April 4, 2005 @ 9:57pm
2nd Stage, eh?
I can’t think of a more idiotic system than this. How much spool down could you possibly have when lifting off the throttle to shift or to decelerate? Any good ball-bearing turbocharger will be able to maintain most of its turbine speed through low frictional loses. A system like that is creating explosions in your exhaust system adding not only stress but a good amount of heat to an already volatile (heat-wise) location.
Ruban said,
April 15, 2005 @ 2:55pm
Wow… very cool. Good info.
2 eProps.
P.S. Shihab’s a hater.
aaron said,
April 15, 2005 @ 3:19pm
i agree. he’s a hater. ;p
Lan said,
April 15, 2005 @ 6:23pm
whatever. -2 eprops.