XL hybrid conversion kits

Discussion in 'General' started by TheStepChild, May 17, 2014.

  1. Interesting idea.
    I've seen a few in GMC 2500 Savana cargo vans around here.
    Although, the one driver I talked to - I had him show me the dash. He was averaging 15.5 mpg with the hybrid, and it was the same van as mine - 2012, 2500 with the 4.8L .
    He said you can feel it in town, and on hills on the express way.
  2. fusion210

    fusion210 Well-Known Member

    That's what I'd call an ultra mild hybrid. Mild salsa levels of mild. Mayonnaise on white bread mild.
  3. phoebeisis

    phoebeisis Well-Known Member

    In vans-guessing it would take perhaps 1000 watt hrs to push it a mile at 30mph?
    And maybe-pure guess-it takes an extra 500 watt hrs to go from 0-30

    I couldn't find any actual specs-maybe i didn't look hard enough
    The electric motor-can't be big enough to accel the van-all by itself-take maybe 50hp at least for very leisurely acceleration?

    But the 25% -city-claim- very decent improvement-even if you assume it is an exaggeration-and 15% is more like it
  4. 08EscapeHybrid

    08EscapeHybrid Moderator

    I'm guessing that most of the gains would be from shutting the engine down at stops. We have a 2000 GMC Savanna 3500 that I have no idea what mileage it gets. We drive it so little that we only do partial fills on the tank to keep the gas fresher.
  5. phoebeisis

    phoebeisis Well-Known Member

    08 Escape
    Right-my 98 suburban 5.7- uses .6-7gph at idle.
    If I shut down at red lights on relatively short urban/suburban trips-mpg goes from 15.5-18mpg.
    So you are dead on 15% is the engine being shut off at lights.
    A typical 10 mile trip can have 10-12 minutes worth of stops- .1 gallon of the .7 gallons I use.
    Guessing the AC problem is why all vehicles don't have auto shutdown.

    How big a BP is require to drive a car AC for 2-3 minutes-maybe something capable of delivering-100 watt hrs-300 watt hrs actual capacity-30 lbs nickel metal hydride-perhaps $300 or so?? Plus the electric compressor etc?
    Car ACs-maybe 10,000 BTUs??

    Yeah-bet you are right-shutting the engine off -most of the savings-and the simplest cheapest part too.
  6. 08EscapeHybrid

    08EscapeHybrid Moderator

    A battery capable of running an electric a/c compressor for a couple of minutes will cost more than $300.
  7. phoebeisis

    phoebeisis Well-Known Member

    Escape-even a cheaper nickel metal hydride one-??
    I was assuming 1/5 the capacity of a regular Prius battery might be enough-
    guessing those BP are "just $1500" and dividing
    You are certainly right-it wouldn't be 1/5 the cost-I would hope it wouldn't be 1/2 the cost-$800- but maybe it would be.

    The cheap 3.7 V 3000 milli-amp-hr 18650 batteries I use in my cheapo flashlights-are $2-Lithium of course-but cheap
    Figure maybe 1/3 discharge- 3 watt hrs each- 100 of them-$200??
    But they are all but junk-probably don't deliver anything like claimed amps-poor QC in general-probably a fire hazard too(had a chinese lithium battery catch fire before).
    A quality BP-yeah would cost at least 3x-$600 or so if lithium-guessing they wouldn't bother with heavier older tech batteries.

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