Glide mode in Prime?

there should be a screen with arrows, but even better, on gen 3, they came out with the 'hybrid system indicator' HSI, which shows throttle pedal travel, and the line between power and regen in ev mode, and also ev/ice, and eco/power line in hv mode. hopefully, you still have that on gen 4/prime.

 

It is called "N" and works fine if you grew up with manual transmissions.

Bob Wilson

 

In the Gen 4, they appear on the MID beside the speedometer. You can also have a small bar graph right beside the speedometer if you choose. These settings are controlled from the Settings menu on the MID. The graph beside the speedometer is called split screen.
i assume the Prime is similar.

 

not sure i understand the benefit of gliding in EV mode (HV assuming no EV left makes a lot of sense), i rather recharge, e.g. I did a lot of gliding in the Gen3 when going down a long hill but now i rather put it in DRCC or even B to recharge as much as possible, same for having to slow down in front of a red light

 

i can only assume it's more efficient, if you need to keep up with traffic, and don't want the slowdown of regen. . pulse and glide doesn't work i'm told, because pulsing the electric motor is not efficient.

 

I've given up that habit in the Prime for the reason you're stating ...

 

Driven plenty of non-Hybrids in my life and the engine kept running in "N" on all of them. I do not know of a manual transmission Hybrid.

 

Sooo, on the 3rd Gen, if you switch to N above ~42 mpg the engine will keep doing what it was doing until you go back to D irregardless of vehicle speed changes while you're still in N.. IE, if the engine was off, it stays off and vice versa. Is this still true in HV mode for the 4th GEN at the same speeds? I'm curious if the hypermiling thresholds are the same since the both have the same HV engine.

 

I think the biggest benefit is that any time you put electricity into the battery or take it out, there is a certain amount lost to heat. If traffic allows you to glide to a stop sign or traffic light, then you don't have that loss. However, if you can't glide much and end up braking harder at the end, it's even worse because you're putting more current through the wires and heat is a function of current.

Theoretically. Either way, it's still better than a regular gasser turning gasoline into heat and brake dust.

 

With our Gen-3, there was some variability in the 42-46 mph range but you've got the core. I would typically accelerate over 42 mph and as the car slowed down, the engine stopped. Then I would shift into "N" down to 25 mph before putting it back in "D" and hitting resume on cruise control.

I don't know about the Gen-4 Prius as I've only had one, brief test drive. I did notice the minimum cruise control speed was bumped to 28 mph which is the same with the Prius Prime. But the Prius Prime has an even higher threshold, 84 mph.

If someone has a Gen-4 Prius, perhaps they might determine at what speed the engine goes off when in "D" and foot off the accelerator?

Bob Wilson

 

I am not sure I understand what you want. In my Gen 4 and my son's Gen 3 (2015 Prius v) the car goes into EV mode at highway speeds.
I regularly drive a 60 mph stretch of road, sometimes with light traffic. What do you want tested with my Gen 4?

EDIT:I hit Reply twice & got 2 postings.

 

OK, leave the EV batt out of the equation. I was looking at only the HV mode so I could compare the HV only between the 3rd and 4th GEN's.

Both vehicles have the same engine, so I was curious if they hypermiled (pulse and glide) the same way and with the same thresholds in HV mode.

On the GEN III if you are going over ~42-46 mph and bip the gas and back off or throw it in neutral, the ICE will keep running around 900 - 1500 rpm no mater what you do. If you do the same thing below 42 -46 mph, the ICE will shut off to 0 rpm and you can glide down to say 35 mph and then you "pulse" it back up to 42-46 and do it all over again.

It's the 42-46 mph that I'm wondering about on the GEN 4. Is that engine shut off speed the same?

 

Hmmm. Not only did I have dupe posts, since removed, but one of my posts got totally nuked too.
The EV light comes on when the engine is not turning, correct? I had that happen this morning when traveling 60 mph but my foot was still on the accelerator.

Why would you want to throw the car in Neutral os anytime except to clean rust off the brake pads?

 

I experimented with it because some people claimed that they had significant mpg boosts that way. I couldn't tell the difference. For me, it was busy work. Easier to just modulate the gas pedal and glide that way. Also more ready for emergencies when in Drive.

 

I never pulsed and glided that way. I only mentioned it because Bob included it in his method above. It works, but it was not the preferred P&G method that I ever used.

+100

That's how I always did it and therefore my question. To use that P&G method, I was curious if the ICE shutoff speed is still the same.

 

So, you measure shutoff by the green EV indicator on the MID?