Got the "Feel" of the HV/ICE Line!

I also have noticed the Resistance at the HSI center line. It's very subtle but there if I'm using very little pressure on the gas pedal.

 

Hope everybody loves ICE running monitor LED.

Ken@Japan

 

Me too.

 

I don't think there is feedback in the accelerator pedal. Think about it a "stick shaker" for the accelerator pedal. now that would be a cool mod

 

I've forgotten what it's called, but you can actually train yourself through repeated practice to "feel" something that has no "feel". For example a good target rifle's trigger has no creep, that is it does not move until it releases all at once. The force required to "break" the trigger is very repeatable though. If you shoot it enough, you know the instant just before the trigger breaks, you can swear you can "feel" it, but in reality you have trained yourself to the exact amount of pressure your finger exerts to break the trigger.
I assume you have trained yourself to the point that you can ride the edge of the center line of the HSI without going over it just by feel, but I don't think there is any feed back through the pedal that is helping you do that.
I'm sure your actually doing it, just think the car isn't helping you is all.
Just like i can swear that a short time after I start a glide something releases, feels like an automatic tranny does when it shifts into neutral, but it's probably all in my head.

 

At what speed was that?

 

I would like to add that in Europe and other l/100 km markets, the 'is the ICE on?' question is a bit easier to answer since we will see 2 or 3 bars on the consumption gauge if it is on, 0 if it is off.

 

I understand what you mean. What I have noticed is the throttle seems to be de-sensitized around the middle of the display or as others have posted "sticky".
Anne, on the US version of the car, it's entirely likely that our engines can be running, but the fuel consumption be higher than 99 MPG, so the display won't tell you if the ICE is consuming fuel or not. Of course there may be a valid argument of it's it's getting 100 MPG or more who cares if it consuming fuel or not.
On edit of course it's "sticky" now that I give it a little thought. There has to be two "numbers" for the ICE to be turned on and off, if it were one than you could get a point to where it would be cycling on and off, and that wouldn't be good would it.

 

I "feel" the resistance at the mid line also. I believe it is more prevalent in the ECO mode (ECO button on). I can also feel the MG spinning up the ICE and ready to ignite as noted in other posts.

One odd thing I have noticed too is I am able to go beyond the mid line and still not have the ICE ignite (100 mpg (full up) noted on the MPG meter anyway). Usually that only happens at the end of my commute (18 miles) and going slightly downhill at about 50-52mph. Anyone notice that?

Peter

 

I think the ICE on and off point is different like a thermostat. For example if the set point is 78, then the compressor turns on at 79 and off at 77 or something similar.
I believe the on point of the ICE is variable as to SOC of the battery and possibly load of the car. By load I mean, going down hill with only a little throttle the car is accelerating nicely, maybe it will stay in stealth a little longer than going up hill and a lot of throttle and little or no acceleration?
I also believe that at any speed above 46 MPH? the ICE is running, period. Maybe not using enough fuel to show up in the consumption meter, but running just the same.
Now all of this is pure conjecture on my part and what I could pull from others posts, so I may be wrong

Peter, I believe what your describing would be Warp Stealth on a Gen II, but unless I'm mistaken, there is no Warp Stealth on a Gen III

 

If your serious about determining the HSI, get some instruments. Ken's indicator is good and the ScanGage II is also good. You'll see that the engine is always on to the right of center and can be to the left of center. The HSI is not in any way linear or consistant and will tell you what Toyota thinks will be helpful to the general population.

Wayne

 

I rely mostly on the scan gauge, it gives me a tachometer which tells me with absolute certainty if the engine is running and how fast. TPS indicates the exact throttle position. I also like being able to tell what the coolant temperature is. For the fourth displayed parameter I usually select IGN.

If you haven't used one I suggest giving it a try, it's the best $160 I've spent on the car yet. Takes a lot of the guess work out of driving. It mounts very nicely on top of the steering column with velcro and the cable tucks out of the way with no problem.