Gen2 Prius: Custom PIDs for Torque (Android App) with formulas

Where is the mount going?

 

Looks like mission control. ;-)

 

That is very nice.... Lots of screen real estate.

 

Just wondering if your kW converted spreadsheet of PID's is available for download?

Ben.

 

Great, except there's still hp's, ft-lb's and degF throughout...

Also, the "friction brake power" seems to have 200kw and 200hp as the "max value" which seems inconsistent. I'd offer a patch but I have no idea what's sensible, or if it even matters, or even if it's wrong (I'm guessing it's primarily used to set the scale on the dial gauge?)

By inspection, it looks like I should be able to just change the units, change the min and max values, and multiply by the appropriate scaling factor - is there more to it than that?

Of course, I'd also be surprised if someone hadn't already done it...

Ben.

 

I've made the changes I think are necessary, and attached - the more I looked the more obvious it seemed

Even so, I'd appreciate an eyeball over it for sanity checking if you don't mind

Thanks,
Ben.

 

And for a slightly more difficult question, any idea how to go about adding injector pulse width?

(xgauge equivalent PID below if that helps)
07E021F3 / 0306 8461 05F3 / 3808 / 000A 0008 0001 / inj

 

USB, can you point me to a good explanation of Ian's equations used in the Torque App. Particularly what the algebraic letters represent.

My android phone is due via UPS today and a Kiwi bluetooth dongle is also on the way. When I load Ian's app onto my android phone, will I find the explanation there?

I've looked at his website and didn't find an explanation there.

Thanks for the custom pids list you are maintaining.

 

Thanks, I don't think I would have found that thread on my own, I've spent some time on that site.. I should have gotten a clue what was going on from the hex conversion looking equations though.

Looks like I have a homework assignment and thanks again for pulling all the info together for us.

 

Hi ehybrid,

I believe this xgauge was found by hobbit:

http://www.techno-fandom.org/~hobbit/cars/can-split.html

I think the reason for the deviation is the rounding error in the scaling. From the RM, the Injection period of the No. 1 cylinder:

Min.: 0 ms, Max.: 32.64 ms

http://share.qclt.com/丰田普瑞斯原厂英文手册PDF格式/Repair Manual/04pruisr/05/2054m/cidlitac.pdf

Using y = Mx + C,

When x = 0 (Min.), y = 0 => C = 0

When x = 255 (Max.), y = 32.64 => M = 0.128

Therefore, I think the xgauge should be:

07E021F3 / 0306 8461 05F3 / 3808 / 0080 0064 0000 / inj

The corresponding Torque equation:

	Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7	Column 8
0	Name	ShortName	ModeAndPID	Equation	Min Value	Max Value	Units	Header
1	Injection period of the No. 1 cylinder	inj	21F3	C * 0.128	0	32.64	ms	7E0

Vincent

 

The injector pulse width PID seems to ... sort of work.... other than something in the changes I've made to that spreadsheet has broken most of the other pid's and makes torque crash :/

I've been staring at the thing for hours, someone feel like making me feel silly and show me where my ridiculous typo is?

Ben.

 

Sorry for being a serial pest Hope my contribution can result in a second "master list" with metric units for everything, rather than having double the number of pid's in the one spreadsheet (the list is so long as to be a major inconvenience to add displays as it is - unless there's an easy way I don't know about?)

Have a question on your "friction brake power" calculation:-
Seems
(((256 * A) + B) - 16383) * ((4*R - 512) + (4*E)) / 9549
Which would seem to translate as:-
MG2 revolution * Brake master cylinder torque + brake regenerative torque

...I don't understand why you're adding the regen torque... Seems that should be labeled "total brake power" or have the last term removed, right?

Ben.

 

Hi Ben, Your equation came through with a smiley in it. You can avoid that by enclosing it in {code} {/code} except use the square brackets instead of the curly ones I used.

This is only an example and may not be correct...

Code:

(((256 * A) + B - 16383) * ((4*R - 512) + (4*E)) / 9549

I'm assuming it should have been a B

 

Sorry xs650, didn't notice. Try2 :-

Code:

((4*R - 512) +   (4*E)) * 0.7376
(((256 * A) + B) - 16383) * ((4*R - 512)   + (4*E)) / 9549   

These two are for "friction pad torque" and "friction brake power" -- both seem to add the "regenerative torque" factor (the 4*E part)

Ben.