ThudnBlundr wrote: ↑Fri Aug 28, 2020 8:47 am
oscarmax wrote: ↑Wed Aug 26, 2020 4:22 am
Trex I have been studying your post, we have recently brought a new 2.4 PHEV and tow a 1500kg caravan, the first time out in July we towed 180 miles, as were were very early and heard horror stories of 17mpg and turtle mode we set the speed limiter at 50 mph let the battery run down to 5 miles left, then use the charge button for a majority of the journey, the battery eventually recovered to 8 miles, we had no heating on weather about 15 degrees C we achieved 26.6 mpg.
On the way back it was raining hard 50% of the journey, we had to demist the windscreen, but travelled at 55 mph instead of 50, and left 40/45% charge in the battery ,our fuel consumption improved to 27.3.
On the journey down we messed around with B2/B5 on the way back we left in in B5
The PHEV is quite highly geared in parallel mode in what is effectively 5th or 6th gear for a 'normal' car. So driving more slowly may well be causing the ICE to labour a bit, affecting the economy. There will be a speed where it is most efficient while towing, and it certainly sounds like it is above 50mph. As an educated guess, I would say it was somewhere between 55-60mph.
Being new to PHEV's this all a bit of a steep learning curve for me, I have been following some of Trex posting which make interesting reading and a mindful of information. Now from experience towing at 55 mph I now have a better understand the engine and systems torque, and yes I am finding it is better at 55 - 60 mph towing.
The most interesting of Trex graphs is the power output supping from the motors with 30% plus battery and how it tails of above 50% to 80%. I am out with the caravan in September and will aim for 40/50% battery before using charge mode and B5 to get maximum regeneration. I will use the charge up at roundabouts and built up areas.
I am going to try for 28 mpg now the PHEV has loosened up with 2000 miles under it belt.
Mitsubishi Outlander 2.4 PHEV Design 2020 Towing a Swift Conqueror 480 2016 1500kg
Please be patient I suffered a brain injury several years ago and get confused at times