So what new gauges would everybody like to be able to program into their newly updated Scangauge II's? I know just about everybody would like to be able to monitor the SOC % but what else are you all looking for?
Hybrid battery temp MG1 temp MG2 temp Inverter temp Hybrid battery current in Hybrid battery current out Regen brake current Wayne
Wayne, I think that you nailed the main hybrid parameters (as long as SOC and Traction battery voltage are there). JeffD
Sorry about my ignorance on the scangauge II but things I wish I could see when driving my Prius are: - energy into and out of traction battery energy into and out of M1 energy into and out of M2 ICE temperature HSD temperature Inverter temperature and the normal MFD display for power flows and instant fuel consumption. Something I wish Toyota had included in the MFD is a bar graph of ICE fuel consumption and energy in and out of the electric motors and perhaps the battery. So I can see at a glance where the power is coming from and going to. All this would have fitted in the space of the instant consumption bar graph.
<div class='quotetop'>QUOTE(treehggr @ Sep 17 2007, 08:51 AM) [snapback]513623[/snapback]</div> I would like to see oil pressure, if that is available.
Manifold vacuum. Best instantaneous indicator for how hard the engine is working. High vac = Max efficiency. Important enough that I am considering a separate vacuum gauge if I can figure out how to hook it up, and if the installation is not some butt-ugly thing that only a hobbit engineer could love.
<div class='quotetop'>QUOTE(Doc Willie @ Sep 17 2007, 11:08 AM) [snapback]513693[/snapback]</div> Interestingly, the Prius has been shown to do the opposite. Low vac = max efficiency. HSD basically runs the engine at a wide throttle opening and then loads it down to reduce RPM, thus controlling power output. That way it's not wasting so much power to suck air against the closed throttle plate. Most of the time you will see anything from 50-80% load on the SG with the high end of that favored once you get above ~1600-ish RPM. The only time you are likely to see high vacuum (low load) is when the engine is running at its minimum power-making speed of something like 1100-1200RPM and it has to close the throttle to cut power. You will see much higher instantaneous FE numbers but the power also drops off to almost nothing. If you're really lucky the system will give up on the ICE at that point and give you stealth mode. Low vacuum is good for "normal" cars, but only because that's about the best you can do when the engine is mated to a step-gear transmission. Also, manifold vacuum is already built into the SG so you won't have to mess with the X-gauge feature.
<div class='quotetop'>QUOTE(FireEngineer @ Sep 17 2007, 06:56 AM) [snapback]513652[/snapback]</div> Oooooh! I like these
<div class='quotetop'>QUOTE(jdenenberg @ Sep 17 2007, 09:24 AM) [snapback]513666[/snapback]</div> Darn, forgot Hybrid battery voltage. Thanks Jeff. Wayne
Thanks for the responses. I will be pushing to get these researched and created too. Hopefuly today as I'm anxious to get these all figured out.
Hey, prototypes are always butt-ugly! But my panel has no particular reason to move beyond prototype stage, because it would have to be completely redesigned from the ground up with components still available today... . There's a vacuum fitting on the manifold in the '04+ that used to go to the HCAC adsorber blockoff valve actuator in the Classic. It's just stopped off with a rubber cap, which you can replace with your vacuum hose. Getting it through the firewall is another story, but see the imeter page... . _H*
Just an update. Linear Logic is still in the process of researching all CAN data for the Prius. I'm guessing some x-gauges should be ready within the next few weeks or so. They now have a Prius company vehicle to continue their ongoing research. It's a long wait but should be well worth it.
