3 ms·
> Oh the stomping on the accelerator indicates an emergency so we go with maximum performance rather than emission compliance FWIW, that's common on gas engine
by jcoby 9y ago
> Oh the stomping on the accelerator indicates an emergency so we go with maximum performance rather than emission compliance
FWIW, that's common on gas engines so there is some precedent. It's called power enrichment and can be adjusted in GM computers. When it kicks in depends on the car/truck it's installed in. But it uses a combination of manifold pressure and throttle position and rpm to decide whether or not to command extra fuel. You can see the params HP Tuners uses to configure the PE circuit here: https://www.hptuners.com/help/vcm_editor_parameters_gm_eng_fuel_pe.htm https://www.hptuners.com/help/vcm_editor_parameters_gm_eng_f...
- rosbrith 9y agoThis replicates the functioning of a carburettor equipped with a mechanical accelerator pump. It squirts some extra fuel into the manifold when the throttle pedal is depressed, the quantity determined by the force applied to the pedal.
- jcoby 9y agoWhat you're describing is called accelerator enrichment and does mirrror the accel pump in a carb. https://www.hptuners.com/help/vcm_editor_parameters_gm_eng_fuel_ae.htm https://www.hptuners.com/help/vcm_editor_parameters_gm_eng_f... Power enrichment is a different function and commands a new afr for peak power (generally around 12.5:1) instead of trying to maintain around stoich.