|
I have been watching the Injector MS an they do jump a bit when you the ICE starts after it's been off for a bit. The numbers settle within a few seconds to a steady number though. This seems to suggests a bit of enrichment but it's short.
I wish I had a PC so I could graph some of this stuff.
I have been getting roughly 4.9 with preheat and 5.8 without on my commute. There seems to be enough difference to be certain it's not other variables.
To measure the transaxle difference would probably not reliably show up on my commute though, because the variability is +/- .15 L/100. I would expect the transaxle preheat to be in that area of improvement. at 2000 rpm, the difference between 28C and 60C was about 60 watts. Overnight ambient temperature here has been about 5˚C though so the gains must be substantially higher than this. I estimate 150w.
The real key to big mpg savings here is getting to the ice to 70 and into S4 asap.
Estimated watt savings:
Transaxle preheat: ~150W @2000 rpm
12V electrical load: ~500W continuous
Battery preheat: ??? Next project.
__________________
Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
|