Rotax 912is Fuel flow

by stephen gong in 912iS Technical Questions 9 years ago

Hi,
I have a question about dynon show Fuel flow on screen.I search skyview installation guide show:sensor data provided by rotax 912 is ECU via CAN BUS. I try to search Rotax IPC, I didn't find any sensor about fuel flow. So Do you know where the sensor? or how to calculate the fuel flow? Thanks!

Re: Rotax 912is Fuel flow

by Glenn Martin » 9 years ago

Glenn Martin

4 291 858

I do not know for sure,
but usually ECU's calculate fuel flow by adding up the amounts of fuel the ECU injects per injector per cycle. Therefore no "fuel flow" sensor needed. I have worked on three development engines that used this method and it was very accurate.

The fuel consumption is just one of dozens of parameters streamed over the CAN bus.

Having said that there has been some discussion that the number from the IS ECU is about 10% too low. so do be a little careful,

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