fbpx

 

Rotax 912iS Ignition System
1. Is it possible to isolate the Battery and use a dedicated charger powered into the VPX in flight and switch to 110V AC on the ground?
2. How is Generator B integrated into the VPX? – Is it useful or should I reserve that VPX circuit for an external Alternator?
3. How is the connection between Buss A and Buss B accomplished? – All internally by the engine wiring?
4. How is the engine shut down under normal circumstances? – Turning off Line A and Line B?
5. Is it correct that if generator A fails, generator B would take over
6. Also if generator A and B fail, the Battery would take over. How are the two busses connected in those situations?

912iS_IgnitionSystem1.jpg (You do not have access to download this file.)
  • Re: Wiring Ignition for 912iS

    by » 3 years ago


    1. If your plane has a ground power source.

    2. I have the same exact question! So I'm bumping this hoping someone can answer this one too.

    3. A and B are separate and powered by their own generator and the ECU decides which it uses.

    4. Yes once both are off the engine will shut down.

    5. Both generators operate at once. A powers the ECU and critical engine components and B powers the main bus (avionics and lights etc). If B fails then the engine keeps running but the battery will start powering the cockpit and when it runs out the cockpit will lose power. If A fails then the ECU will hijack B so that the engine doesn't stop.

    6. The battery won't take over so actually the engine will stop. But a "backup switch" you toggle manually can connect the main bus and ECU bus to the battery so that you can still run the critical engine components for about 30 minutes until the battery runs dry.


You do not have permissions to reply to this topic.