Peugeot 406 Coupe EV conversion

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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arber333
1.8 16v
Posts: 53
Joined: Wed May 09, 2018 10:02 am

Re: Peugeot 406 Coupe EV conversion

Post by arber333 »

frog wrote: Tue Sep 15, 2020 4:40 pm Wow! Good job! :cheesy:
I can understand the increase of power from 110 km/h to 130 km/h, but going to 149 kW for 150 km/h seems too much. My 110 HDI is 110 HP (duh) so 80 kW, and it can easily do 150 km/h
Engine Cooling.png
Yes well 150kW was drained at hard acceleration up to 150km/h where i ran out of straight road. I still need to go out with an app to measure drag run.
But as i understand i imposed RPM limit to the motor at 10500rpm so it wouldnt tax the battery too much since at this speed it it deep into field weakening and heat buildup. I assume this is at 160km/h somewhere. I think this is enough speed fpr EV. Id rather want to improve acceleration.
arber333
1.8 16v
Posts: 53
Joined: Wed May 09, 2018 10:02 am

Re: Peugeot 406 Coupe EV conversion

Post by arber333 »

Last time i went on the highway and drove some 40km to a friend and charged there. Remember i have my temp gauge wired with some parallel resistance to create higher temp. That way dry temp sensor alarm wouldnt get me at start. When i leaned over and touched the coolant hose leading to radiator i was shocked! It was hot. Luckily it was not hot enough to fault the inverter.
Now i am playing with cooling fans controls. I see the logic behind a two fan start. First they start slow and then relays click! Now fans start to run at full speed which is quite loud.
I also found out that i can trigger start behaviour with the 4th contact on pressostat. If i give it 12V it will start fans and if i pull it they will stop.

Now in practical terms i have 3x relays between fans. I experimented with taking them offline and figured which relay was for which function. In the end i cut positive control wires to two relays and now with a single pressostat wire i can start both fans at 1/2 speed. Though full speed is not available anymore i think i will be good with half rpm. It is much quieter and lower 12V consumption.
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