Some interesting results from the

Frank Hudon · 07-31-2004, 11:41 PM

Mini Scanner that I installed in my 2k3 Prius.
highest amperage to the MG2 was a half throttle start 47.5 amps
highest voltage on a coast 306 volts to the battery
it's neat to see MG1 reverse direction when the ICE starts
BSOC is running about 57-64%
I'll get more temp information on the Block heater as I now have an engine temp gauge
Max MG1 RPM 6230
Max ICE RPM 3780
all this data if from a very limited test, IE. max 13 blocks driving.

Frank Hudon · 08-01-2004, 08:19 PM

today the following results.
Max regen 57.3 amps (approx 64 kmh and moderate braking, not friction)
highest voltage 312 volts, after a long hill and lots of regen.
interesting as you go thru about 46 kmh the MG2 current requirements drop down to about 9 amps on level ground and just maintaining speed.
more to come. I've got it programed to give MG2 torque and temp and current draw, and battery voltage.

Frank Hudon · 08-01-2004, 08:22 PM

I'd love to see Graham Davies do this for the 2k4 as I'll buy one for it too. Just to compare the data.

**efusco** · 08-01-2004, 08:52 PM

Quote:

Originally posted by Frank Hudon
I'd love to see Graham Davies do this for the 2k4 as I'll buy one for it too. Just to compare the data.

There's a group at Yahoo actively working on this...I'm a moderator of the forum, but I'm not really sure why...I'm not technically adept enough to contribute much. Anyway, it'll probably be another year before these things are available but if you want to place a deposit or make a donation to the cause I encourage you to check it out...

Yahoo MiniScanner Group

Frank Hudon · 08-01-2004, 09:49 PM

I know all about his efforts to do it for the 2k4 and when he's got it, I'll get it. You really don't want to know how much this one cost me landed here in Canada. 193 usd and exchange took that to 265.78 + 4$ processing fee and $43.87 tax on this end, so you can see it's no bargin, but as a mechanic you just have to know this kind of data if there's some way to extract it. That'll give me a year to justify it to the "banker".

DaveinOlyWA · 08-02-2004, 09:39 PM

thanks for the info. i would be very interested in hearing more data as you compile it. you need to post more reports.

also have you checked to see if there is any difference when using "B" mode for short periods on level ground (iow, in a situations that doesnt involve large hills)

Frank Hudon · 08-02-2004, 10:12 PM

some more results from a longer test drive. Up a mountain. Start at 300' and go to 3,200' in 4.5 miles. Temp at bottom 27C temp at top 20C
BSOC at bottom 55.5%
BSOC at top 57%
Voltage at bottom 290 volts
Voltage at the top 307 volts
Engine temp at bottom 87C
Engine temp at top 100C
MG2 temp at bottom 58C
MG2 temp at top 68C
MG1 temp at bottom 60C
MG1 temp at top 79C
Coming down the hill produced the most interesting results on the regen side
Started at the top with BSOC 57%
and on the way down at about 1/3 the distance the BSOC hit 80%, until then I was up to about 54 amps regen and had the Voltage as hi as 340 volts. When the BSOC hit 80% I could no longer regen more than about 2 amps and the Voltage dropped to 322 in "D" mode so dropped it into "B" and the amperage went to -18 amps and the voltage dropped slowly to 309 volts. At 80% there was no way to make regen braking work, when you eased on the brakes you were immeadiatly into friction braking.

DaveinOlyWA · 08-02-2004, 10:51 PM

oooh so regen cuts off at 80% to prevent overcharging??

well that definitely increases the stock of the EV switch.
when you know you will be coming upon a big hill you are better off to run the battery down as far as possible.

so getting battery into the green might be counterproductive in some cases....interesting very very interesting.

i will admit to having a tough time getting into the green even on long hills that frequent the sound south area of WA St.

is there anyway to isolate and check on current draws for air conditioning and the stereo?

Frank Hudon · 08-02-2004, 10:57 PM

this is on a 2k3 so the a/c is a standard clutch as a typical car so I'd say probably about 6 amps. And 12 volts at that. Well they are a smaller clutch so the draw might be a bit higher to get the clamping pressure required to turn the compressor.

DaveinOlyWA · 08-02-2004, 11:14 PM

ooh bummer...ok well thanks anyway. i wonder if the hybrid regen system has changed any from your car. the HSD did go through a major rework so i wonder if the regen limitations still apply.

im sure they would to a point, but i was wondering if you calibrated the SOC level with the battery indicator and when the green lights come on. by toyotas website (which doesnt really get into details) it appears that the green bar would be on at about 65% give or take. does that jive with your figures?

07-31-2004, 11:41 PM	#1
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Some interesting results from the Mini Scanner that I installed in my 2k3 Prius. highest amperage to the MG2 was a half throttle start 47.5 amps highest voltage on a coast 306 volts to the battery it's neat to see MG1 reverse direction when the ICE starts BSOC is running about 57-64% I'll get more temp information on the Block heater as I now have an engine temp gauge Max MG1 RPM 6230 Max ICE RPM 3780 all this data if from a very limited test, IE. max 13 blocks driving.

08-02-2004, 10:12 PM	#7
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	some more results from a longer test drive. Up a mountain. Start at 300' and go to 3,200' in 4.5 miles. Temp at bottom 27C temp at top 20C BSOC at bottom 55.5% BSOC at top 57% Voltage at bottom 290 volts Voltage at the top 307 volts Engine temp at bottom 87C Engine temp at top 100C MG2 temp at bottom 58C MG2 temp at top 68C MG1 temp at bottom 60C MG1 temp at top 79C Coming down the hill produced the most interesting results on the regen side Started at the top with BSOC 57% and on the way down at about 1/3 the distance the BSOC hit 80%, until then I was up to about 54 amps regen and had the Voltage as hi as 340 volts. When the BSOC hit 80% I could no longer regen more than about 2 amps and the Voltage dropped to 322 in "D" mode so dropped it into "B" and the amperage went to -18 amps and the voltage dropped slowly to 309 volts. At 80% there was no way to make regen braking work, when you eased on the brakes you were immeadiatly into friction braking. __________________ You can quote me on this, People who drive vehicles that idle at a traffic light, are idiots. mine 2k3 avg. 5.36 for 46,915Km Best tank 4.4L per 100K 64.2 Imperial 53.4 U.S. gallon, MiniScanner, SilverStars, block heater, winter lips, in as of Oct 15, out on April 25. In again on Sept. 21st. her's 2k4 "B" avg. 6.01 for 42,317 Km Best tank 4.02L per 100K, CAN-view with OBD11 module and flashloader, SilverStars, 06 Chrome grill bar, Michelin HydroEdge, upper and lower grill blocker,upper out as of April 7, lower out on April 28. In again on Sept 21st.

08-02-2004, 10:51 PM	#8
DaveinOlyWA Opps !! I Did it Again!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 9,259 My Car: 2006 Prius Package: #4 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	oooh so regen cuts off at 80% to prevent overcharging?? well that definitely increases the stock of the EV switch. when you know you will be coming upon a big hill you are better off to run the battery down as far as possible. so getting battery into the green might be counterproductive in some cases....interesting very very interesting. i will admit to having a tough time getting into the green even on long hills that frequent the sound south area of WA St. is there anyway to isolate and check on current draws for air conditioning and the stereo? __________________ My 2006: Last tank 476.8 miles @51.0 pump (50.9 computer) 7.63 cpm winter mpg 50.78 summer mpg 54.93 lifetime: 30,628.2 miles 53.03 mpg pump (54.32 mpg computer) 5.73 cpm My 2007 Zenn Driven 4580 miles, 2.09 cpm/ 178 mpg (at $3.71/gal), 3.76 miles/ Kwh Savings over my Prius $249.16 The Corolla...457.83 The REAL SAVINGS from not driving Corolla 560.07 +Prius=809.23 (excludes maintenance costs...would be unfair to ICE vehicles) My Plate: DUALPWR (Dual Power)

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08-01-2004, 08:19 PM	#2
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	today the following results. Max regen 57.3 amps (approx 64 kmh and moderate braking, not friction) highest voltage 312 volts, after a long hill and lots of regen. interesting as you go thru about 46 kmh the MG2 current requirements drop down to about 9 amps on level ground and just maintaining speed. more to come. I've got it programed to give MG2 torque and temp and current draw, and battery voltage.

08-01-2004, 08:22 PM	#3
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I'd love to see Graham Davies do this for the 2k4 as I'll buy one for it too. Just to compare the data.

08-01-2004, 09:49 PM	#5
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I know all about his efforts to do it for the 2k4 and when he's got it, I'll get it. You really don't want to know how much this one cost me landed here in Canada. 193 usd and exchange took that to 265.78 + 4$ processing fee and $43.87 tax on this end, so you can see it's no bargin, but as a mechanic you just have to know this kind of data if there's some way to extract it. That'll give me a year to justify it to the "banker".

08-02-2004, 09:39 PM	#6
DaveinOlyWA Opps !! I Did it Again!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 9,259 My Car: 2006 Prius Package: #4 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	thanks for the info. i would be very interested in hearing more data as you compile it. you need to post more reports. also have you checked to see if there is any difference when using "B" mode for short periods on level ground (iow, in a situations that doesnt involve large hills)

08-02-2004, 10:57 PM	#9
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	this is on a 2k3 so the a/c is a standard clutch as a typical car so I'd say probably about 6 amps. And 12 volts at that. Well they are a smaller clutch so the draw might be a bit higher to get the clamping pressure required to turn the compressor.

08-02-2004, 11:14 PM	#10
DaveinOlyWA Opps !! I Did it Again!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 9,259 My Car: 2006 Prius Package: #4 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	ooh bummer...ok well thanks anyway. i wonder if the hybrid regen system has changed any from your car. the HSD did go through a major rework so i wonder if the regen limitations still apply. im sure they would to a point, but i was wondering if you calibrated the SOC level with the battery indicator and when the green lights come on. by toyotas website (which doesnt really get into details) it appears that the green bar would be on at about 65% give or take. does that jive with your figures?