- Jun 27, 2015
- capital district NY
Is that an on-board MAP sensor, in the first picture, bottom centre?Yes, but we can add wideband controllet on board by ourselves
At moment we made and testing our cheapest 80USD ECU in non hermetic plastic case which could be easy installed on old cars including ones with mechanical sparks distributor. Next step will be bolt on ECU integrated to throttle body. Hope complete to October.
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Our ECU working on industrial chinese engine (hoverboard application)
MAFs are good for OEM applications where it isn't hard to engineer a plenum to assure smooth airflow over the sensor. A lot harder under the right constraints of a cowl, and in the turbulent, high pulse world of a single cylinder runner. There's gonna be some flow reversal, maybe even with fuel vapor. Tough on those wires that must be kept clean to function.
Nice collection of options but without matching documentation
I agree, for what that's worth. But an additional complication arises with temperature. In theory, any effects of temperature on the density of the incoming air volume would already be included in a measure of its mass. But, almost all modern MAFs work by detecting the air's cooling effect on a heated wire (more air molecules flowing over the wire=more cooling). Obviously, if we have two air volumes of equal mass and density, but one is cooler, it will take away more heat from the wire. So the MAF sensor requires a temperature sensor and correction logic that may be less critical for a speed density (i.e. MAP and RPM) system.Is a mass flow sensor barometrically corrected?
If a sensor measures mass it is inherently barometrically correct.
All you then need is an appropriate mass-rate of fuel, finely divided to hit the magic ratio.
Gonna drag out all that discredited Ideal Gas Law flimflam, are ye?Hmmmm......Constant volume, constant density, constant mass and different temperatures???
No can do! Obviously? <g>