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By joshuaho96 · Posted
Regardless, it doesn't seem wise especially on RBs to actually chase MBT. Timing scatter is the big one on stock CAS, even if that's fixed overshoot is worse than undershoot. -
It's all about reducing the overall output. Reduce the source of it, you have wayyyy less to deal with in every other step and trick you play with. It's why something like a modern vehicle, so VW, Audi etc, there's thousands of tables for the ECU to calculate what it should be doing with the engine. Why would you NOT reduce emissions the most effective way possible, when it has very minimal tradeoff, AND manufacturers are always struggling to meet the current standards. -
By funkymonkey · Posted
Ran into this bloke trying to give Oscar some advice pre-race today. -
By joshuaho96 · Posted
Yeah I've personally seen the RB26 pull 30 degrees of ignition timing out of the base timing map if the ECU detects a cold start, it nearly starts misfiring because of it around 2000 rpm and it feels like the engine has no power. I'm just surprised that modern OEM control strategies are actually trading off efficiency for in-cylinder emissions. I would expect something like aggressive EGR dilution + tumble generation valve use to improve EGR tolerance to reduce in-cylinder NOx + HC from crevice volume while also reducing throttling loss vs pulling out some timing if not knock-limited. -
*** DATE CHANGE *** Date has been changed to Saturday 17th May. The time and location is still the same!
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