B Lever on Dashboard

[qbee42]

Originally Posted by hybred tom

please no trash in this forum

What does this mean?

Tom

[archae86]

Going on up to friction brakes from regen is not just a question of panic stops or the extreme slow end.

The 90 Ampere or so regenerative maximum is an impressive stopping force and deceleration rate at 20 mph, but at 70 mph it is a rather modest amount which is really easy to exceed. Even at 40 mph braking down to stoplight from 50 mph on a downhill I find it pretty easy to use up my quota.

The single information upgrade on Toyota's energy flow display I'd think most useful would be an indication of braking effort share between regen and friction brakes. If true proportion indication were judged too complex for our little minds, then a simple two-state indicator (perhaps an icon for a disc brake) that turned on any time friction brake share was over a threshold, say perhaps 30%, by changing color would still be an improvement.

It is a pity we need to buy a ScangaugeII or such to see that.

[Danny Hamilton]

Originally Posted by Danny Hamilton

. . . .In a gentle stop on the older model Prius, there is a gradual change with most of the braking done regenerative at higher speeds, and the pads being applied more firmly as the vehicle slows down. It isn't a linear transition, I've seen a graph of it around here somewhere and there is a definite curve to the percent friction/regen as a function of speed.

In the more modern Prius (2004+), from what I've read around here, it is nearly all regen until you get down around 7 MPH at which point there is a sudden transition to almost all disks/drums. . . .

See this discussion:

What exactly happens when you brake?

Originally Posted by Danny Hamilton

Somewhere around here there was a document posted that presented much of this in a great graphical form. If I find it, I'll post the link (or perhaps someone who knows where it is will post the link before I get to it.

Actually I guess it was about 3 or 4 documents. I've found this one:

http://priuschat.com/forums/attachme...rius-brake.pdf

If someone has the time to find them all, it wouldn't be a bad idea to put them together into a single post in the Knowledge Base forum, or into the File Library.

[HeidiHo]

Jey, Thanks guys, for explaining all of that to me. Especially about shifting back in to D, after using B. I wonder why I couldn't find all of this in the Owners Manual......
Sufferin' Prius Envy, I love your Obuma sticker. Unfortunately there are a bunch of hard headed, ill-informed, Liberal 'bottom feeders', that will vote for this 'Islamic Golden Boy' of the 'Lawyers Party'. And if elected, will turn America into the biggest tail-spin it's ever been in, and it might not recover. God Help Us if he's elected, because Obuma sure as heck won't.
Thanks again,
HeidiHo

[Danny Hamilton]

Originally Posted by HeidiHo

. . . .I love. . . .Obuma. . . .Unfortunately there are a bunch of hard headed, ill-informed. . . .'bottom feeders', that will vote. . . .will turn America into the biggest tail-spin it's ever been in, and it might not recover. . . .

Wrong forum. Please take such comments to "Fred's House of Politics". Thank you.

[Fraser]

Originally Posted by Danny Hamilton

Yes. . . ., and it depends.

Thank you for that information. I had understood that friction took over around 7-8 mph. Now I won't be quite as concerned about wearing out brakes before a possible 100,000 miles. FYI, I also drive a 97 F250 Powerstroke with 219,000 miles. Two of the brakes, I can't remember which axle, are the originals. Now I'm wondering which vehicle will wear out brakes first.

[dwreed3rd]

By the way. F.Y.I. I learned something about our 2000 Avalon XLS, using the ScanguageII, that I never realized. I remember a couple of members mentioned having Avalons. Monitoring the GPH & HPR I noticed, on downhill situations, they both go to 00.0. I didn't realize that it cut the injectors off completely. I didn't think that technology came along until later models, although I now remember that the "instant economy" or mpg went to 99.9. I should have guested. I never use instant because it's too erratic, all over the place. I always kept it in "average economy" or mpg, which doesn't make the changes as obvious. That's why I like the HPR. You have a better feel of what's happening. It really helps you to learn to develop a light touch on the gas pedal. It also shows, immediately, what effects accessories such as A/C and even headlights (Silverstar Ultras) have on the GPH & HPR. A/C requires an extra 2-3hp @ idle to maintain rpm. This may be more difficult to determine in the Prius, since the ICE charges the battery which powers the A/C. We used to leave the A/C on all the time thinking the Climate Control would only use it if needed to maintain temp, evidently not so. Now we only turn the A/C on if we're uncomfortable, too hot or too humid. We've increased our MPG around 10%, that's about 2mpg.
Thought this may help others with non-hybrids, if your letting your Climate Control determine when to call for the A/C. It took our city from 17/19 to 19/20. We've kept a log from delivery. All 108k. Date, miles driven, odometer reading, gals, $$$, $/gal, mpg, per fillup. 25/26 highway. Haven't taken any trips since using ScanguageII, but I assume only A/C will affect mileage, since I use CC whenever practical. Having oil change tomorrow. Switching to Mobil1, not sure of viscousity yet. Goint to decide on that tonight.
I realize that most of my remblings are old hat to most of you. But I like to share just in case it helps some of the new drivers. I had my dad. Rebuilt my G'Pa's "49 Pontiac, straight 8, 2 door torpedo back. Pistons like coffee cans. That's when you could actually climb into the engine compartment to work on it. He taught me alot about cars. Passed it on to our son and daughter. Probably some of the few today that can change a tire, check/change tire pressure, check/add/change the fluids, replace lights/headlamps. Used to change our own oil, shocks, brake pads, etc. All required before I let them go for their licenses. Didn't want them stranded. Of course, we need to know all that, since the cars weren't anywhere near as reliable as they are today, or as complicated. Anyway. Drive careful and never let yourself be dead-right. Let the person, in the wrong, have his/her accident somewhere else.