Pulse and the Elusive 'Glide' ???????

Forget the no arrow thing. Go back to the screen where ECO lights up unless you're in power mode and stay within the 1/8th of the left side of the ECO bar for gliding.

 

On the coast down, it can be sticky and go several ticks below 45 before the ICE shuts off, as if waiting to be certain that the driver really wants to glide. But when pulsing, if I quit speeding up at 44 and go for a glide, the ICE shuts off immediately, no stickiness.

But having the ICE spin up at 41-42 when coasting downhill throws a monkeywrench into this reply. Mine just doesn't do that, unless the engine temperature is falling too much. If yours is still warm enough, then something is different.

32k is right. Forget the difficult arrow display, stick with the easier HSI display and just make the power bar either disappear or get very short. Close is good enough in this game.

 

I find coasting at approximately 8 mph (on my car) is the only sure fire way to have a zero arrow glide. Other than that, it is like trying to herd cats. I did read on this site that folks were not able to hit the zero arrow glide on the Gen III like could be done with the Gen II. After reading that, I didn't worry about the arrowless glide anymore.

 

comments from 2nd gen owner

First off, I have a 2nd gen and a ScanGauge. My seat time w/a 3rd gen is very limited and I've never had a SG on it.

From discussions I've skimmed before regarding techniques on the 3rd gen, forget the no arrows stuff. On the 2nd gen, it's very easy to achieve. On the 3rd gen, it's too hard to see the arrows or lack of anyway (display is smaller and far away) and I hear it's hard to get to the state too.

The 42 mph ICE startup threshold was true on the 2nd gen. It does sound like the behavior is a bit different on the 3rd gen.

Are you monitoring your FWT? Are you using the heater? On the HVAC, if you shut off auto and the fan, does the behavior change any with respect to when the ICE starts up/shuts down? On the 2nd gen, if FWT was <=145 F, temp = HI and fan was above off, the ICE would start, to produce cabin heat. (Assuming ICE is warmed up) If you turn the HVAC fan to off at that point, the ICE would shut back down.

 

Are you sure the ice isn't just spinning as it is known to do to protect the motors? It may not actually be burning gas, at least that's what I've gleaned from other discussions.

 

Even if it isn't burning gas, it is still wasting the power (~2kw?) needed to spin it. That is what he is trying to stop by going into a real Glide, not Warp Stealth. At the speed of OP's concern, no MG overspin protection is needed.

 

From my experience, the ICE does not turn itself off while coasting downhill if you are in Power mode, unless you have almost full (7/8 bars) charge. I believe this is so to keep the battery charged in case a burst of power is required, i.e. hard throttling. I could easily steath upto 72km (45mph) before the ICE kicking in, both in Normal and Eco mode. Power mode is a little harder.

 

A couple of thoughts. The no arrows forget it, as it is very tricky - I can do it but you spend all your time staring at it vs watching how you are driving. For coasting just keep the HSI indicator up and when no bar in regen and none in any form of power that is basically gliding and is pretty easy to do. Also if you keep the ECO light on on the HSI screen and the power bar below half mileage is very good. The other trick is the instantaneous fuel consumption graph is also displayed on the HSI and you will start to see the correlation with the MPG and the use or power. Lastly I think you said outside temp was 0-20F and the heater settings plus the fact it is just plain cold is going to spin up the ICE more.

 

Yep that is the instantaneous graph. Once you start to see how it correlates with the HSI it gets pretty easy to figure the glide. A simple starting point is when you have 100mpg on fuel consumption and no regen on the HSI that is pretty much gliding.

 

I'm under the impression that "stealth" is pure electric.

Happy Motoring,

Tom

 

If you haven't read this already, I suggest you go there and bookmark it and come back again and again to read. It is very hard to digest with just one reading - The Tao of HSI:

http://techno-fandom.org/~hobbit/cars/HSI/

Hobbit does an excellent job of describing many aspects for the GenIII. He has a section about half way down that addresses this issue. His conclusion, "The "energy" screen is completely useless for warp stealth, as it shows regeneration the entire time. In fact the energy screen is pretty useless for anything, as it tells the same "lies by omission" we're already used to."

As to you question, glide is under 42 or 45 mph and stealth is above 45 on a GenIII. Glide shows no rpm's on a SG and stealth shows around 960 rpm's although no fuel is being consumed. In addition to monitoring RPM on the SG, I also like to monitor GPH (gallons per hour) to confirm no fuel usage.

 

Just to add some more detail:

Stealth can generally mean moving with no power or by electric motor only (and therefore quietly). In the > 45 mph sense it's short for "warp stealth" and is also referred to as a high-speed glide or Super Highway Mode (SHM).

 

Among the PC gang,
"Stealth" usually means driving on electric power only, without the ICE (internal combustion engine) turning. EV mode is an example of stealth driving, but you can drive on electric power when not in EV mode. Indeed, EV mode says it's turning itself off at about 26 mph, but you can, if careful, go a good bit faster without kicking in the ICE. One of the responses on this thread says he gets up to 45---which impresses me--I've never gotten past about 40.

"Warp stealth" or "Super Highway Mode" usually refers to the condition where you are driving on the highway, above about 47 MPH and the ICE shuts off in the sense of not burning any gas. You may use some electric power to maintain speed, or may actually generate electric power for the battery if slowing or going downhill. However, the ICE keeps turning without gas being burned--because otherwise the electric motors would burn themselves out. (No, I can't explain exactly how that works, but hobbit's Tao of HSI article and some other items on PC explain it pretty clearly.)