Two years with the Hymotion conversion and still going strong

Discussion in 'Prius PHEV Plug-In Modifications' started by TheForce, Oct 15, 2010.

  1. TheForce

    TheForce Ron Paul 2012

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    Year two of my ownership was back in August but I'm just now getting around to posting about it. So far I have not had any problems and the battery is still performing great. I think I have learned as much as possible about how to exploit the battery for best use so there is not much new in that area. This year I managed to pull off 784MPG in the MPG challenge at Hybridfest. Thanks to Linda for a perfect route for the challenge.

    Here are some stats.

    Total PHEV miles: 18,685.6
    Total PHEV gas used: 131.39 gallons
    Total PHEV gas cost: $334.24
    Total kWh used: 2737.8
    Total kWh cost: $219.02
    Total fuel cost: $553.26
    Average MPG: 142.2
    Average MPGe: 86.9
    Average cost per mile: 3.0 cents per mile

    Best Tank
    3536 Miles
    314 MPG
    115.43 MPGe

    Approximately 550-600 charge/discharge cycles total.


    I have also done a distance run on all EV just to compare to previous years.
    On this run I have brand new tires. Michelin Energy Savers A/S. Only a few miles were on the tires before I started the test. Also on my test route the city decided to fix the part of the road I got pulled over on because I was dodging pot holes. This was causing a traffic jam. I decided to take a slightly different route but with the same elevation changes so everything should be pretty close to previous runs.

    This years results
    Distance – 24.4
    Ah used – 14.34
    Amount of Electricity to fully charge – 4683.4Wh
    Wh per mile – 192

    I think if you take into account the traffic jam, slightly different route, and new tires I think the results are pretty close to last years. So it looks like the battery is holding up well.


    2009 results

    Course same as last year.
    Temp was colder.
    This time it was at night with my lights on and PC running.
    I did not have any problems with the SOC getting too low. I'm guessing it was because I was limiting my amp draw to 40A for acceleration and 20A to keep speed.
    Speed was around 30MPH

    Distance - 26.6 miles
    Can-View reported 14.9Ah used
    Amount of Electricity to fully charge – 4734.2Wh
    Wh per mile - 178Wh


    2008 results
    Actual Distance – 33 miles
    Estimated Distance – 25 good easy miles. 33 miles if you work at it.
    Fuel used - Technically 0
    Estimated Pack Size – 18.5Ah
    Amount of Electricity to fully charge – 5295.7Wh
    Wh per mile - ~160Wh
     
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  2. F8L

    F8L Protecting Habitat & AG Lands

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    Congrats! :)

    Ohh, according to the results from the MPG Challenge at Green Drive Expo - Richmond, the winner and 2nd place both had MPG over 3,000. :eek:
     
  3. pEEf

    pEEf Engineer - EV nut

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    Nice Info!

    Are you doing any datalogging on your setup?
     
  4. TheForce

    TheForce Ron Paul 2012

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    I'm taking a wild guess that the scan gauge was used and both drivers ran the course all electric or damn close to all electric. I know because the scan gauge has a problem with all electric driving. Ron from scan gauge said he was thinking about adding a kWh meter or AMP gauge to the scan gauge for next year. Hopefully he will have that implemented soon because thats one gauge us PHEV owners really need to have.

    Not anymore. If you want my raw data logs of the first year with the kit they are available here. http://priuschat.com/forums/gen-ii-prius-fuel-economy/47849-2006-prius-data-analysis.html

    You will have to do all the parsing and data mining yourself.
     
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  5. boxer93

    boxer93 Psyched for PHEV

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    Jay, nice stats. I had my best summer mileage. At 123mpg over 1197 miles. I do remember passing some cars on a two lane road. Maybe I could have squeaked out 124 :). I too am finding the L5 is holding up quite well after 2 years in August.
    Well done
    Chris
     
  6. pEEf

    pEEf Engineer - EV nut

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    If you have XGAUGEs on your SG2, you can add a XGAUGE AMP function:

    ScanGauge Add-A-Gauge

    Open the PDF and scroll to page 6. Note that because the TXD's are the same for both SOC and amps, we can't have them both on at the same time due to the way the SG2 processes queries.
     
  7. efusco

    efusco Moderator Emeritus
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    Great stuff Jay...I am always impressed with the numbers you achieve.
     
  8. MJFrog

    MJFrog Active Member

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    You can use BTA as shown in the link and then use an alternate (passive) soc Xgauge:
    Desc: % state of charge,passive
    TXD: 03C3
    RXF: 010382CB0000
    RXD: 2010
    MTH: 000A00020000
    Name: soc
     
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  9. F8L

    F8L Protecting Habitat & AG Lands

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    Pretty much the case. :) The 2 top cars had huge packs. Gotta watch out for people trying to "cheat" and disconnect catalytic converters too. lol
     
  10. RClams

    RClams New Member

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    Tru dat. All Plug-in Prii competed in one "Exhibition Class", but there was no accounting for pack size. :mad:

    We were allowed to get engine shutoff and reset our ScanGauge "current" trip MPG to zero BEFORE starting.

    The top two "winners" with 10 kWhr packs reported 3,500-3,700 MPG from their scangauges IIRC, which of course means their engine never started during the 33 mile route. (One of these mega-pack cars had two people in it as well!)

    My Hymotion 5 kWhr pack depleted 6.9 miles from the finish (measured later by Google Maps) while climbing the last hill. :eek: At that point I was at 1,400 MPG (having suffered a couple of brief engine starts during an otherwise good hypermile-ing session).

    But getting to the "highest and most remote point" of the course and back to the finish as a normal Prius (with 200+ pounds of L5 "luggage") brought me back to 308 MPG for the race.

    Since their pack range exceeded the course distance, I recommended that the "winners" should have competed in the electric car class. :D

    I learned that while I enjoy running errands at 400+ MPG and averaging tanks at or near 100 MPG (which typically includes at least one 100+ mile business workday or golf outing using highways), I did not actually enjoy hypermiling by myself trying to read directions for an unfamiliar course with tractor trailer trucks tailgating and then cutting me off.

    And catching red lights while at "full EV chat" took on new significance. :hurt:

    Glad I tried it though!
     
  11. TheForce

    TheForce Ron Paul 2012

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    I should correct myself. When I said the SG needs and AMP gauge I was talking about an Ah count down like the CAN-View has. That way we know how many Ah are remaining in the pack. So Actually all we need is a kWh meter or an Ah count down meter.

    I really would like to see the MPG competition for next year reworked some how to include electricity use. That way we can compare who is actually the better driver. I think it would be more fun that way. When I was doing the MPG challenge I was just doing it to see what I could do with the Hymotion system. I was able to calculate my MPGe since I brought my own kill-a-watt meter with me to measure electricity use.
     
  12. mrbigh

    mrbigh Prius Absolutum Dominium

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    That was a very good aproach.....:rockon:
    About the best driver, i do not think that it was the intention of the MPG competition but always it is room for improvement.
    A new classification accordingly to test results with a winning ticket to a Paradise island?. That would be great !!!!
     
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