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Domain: sannet.ne.jp

Stories and comments across the archive that link to sannet.ne.jp.

Comments · 8

  1. For those without: A Prius Simulator by itomato · · Score: 2, Interesting · on Inventor Demonstrates Infinitely Variable Transmission

    http://www.wind.sannet.ne.jp/m_matsu/prius/ThsSimu/index_i18n.html

    Neat-o, and works fine with IcedTea!

    Slider controls for accelerator and brake with 'PRNDB' selector, plus individual sliders for motor, engine, and generator and a visual representation of the work/relation of each..

    Fun!

  2. Re:Uh... by j-stroy · · Score: 2, Informative · on Inventor Demonstrates Infinitely Variable Transmission

    I agree, it sure looks like the output torque is generated by pushing against the control drive motor, meaning that maximum torque at ratios less than 1:1 is related to the rating of the control drive system.

    The control system has the smaller central gear, so there will be some mechanical advantage that will "step up" the torque the control system can provide, allowing for a smaller control powerplant.

    He mentions a kinetic recovery system to power it, which to me indicates an intention for intermittent use. I'm thinking its target purpose is as a no-wear mechanical clutch. Without power input, it sends full power through, which is bad for a failure mode... but good as a clutch. I interpret that the control is least power hungry at ratios close to 1:1 and demands the most power at low ratios; however, I think the "powered zero" requires little power, since there is no torque output.

    You could attach smaller version of this device to a PTO to drive the control system variably from the drive motors own power, and control it with an even less powerful electric motor. Stacking the control system(s) like this could allow large scale versions.

    Some linkies from the gizmag comments: A Prius drivetrain simulator, A John Deere CVT animation

  3. Re:but, where is the socket? by pimpimpim · · Score: 2, Informative · on New iMac disassembled

    Nevermind, found it here: http://mactree.sannet.ne.jp/~kodawarisan/imac_inte l/01141082.jpg

  4. Re:The patent by mocm · · Score: 1 · on Toyota Prius Under Fire For Patent Infringement

    For anyone who wants to know how the Toyota drive works have a look at this simulator.
    It looks similar to the description in the patent, the question is how common such a gear configuration is and what the innovative part of the patent is.

  5. Re:only winner by NuShrike · · Score: 1 · on The Math Behind the Hybrid Hype
    I wonder though about the MG2/MG1 always being used thing: I've heard this (what you said) before, but sometimes on the screen I'm sure I've seen power from the engine to the distributor to the wheels, but no flow either direction to the battery/iconified motor.

    Dead-banding is when there's no arrowing going to/coming from the battery. The ICE is providing all power to the wheels at that point, BUT any yellow-arrows to the wheels is definitely MG2. This is what some people do for the most efficient acceleration from 0, pulse-and-gliding, and other hypermiler driving techniques.

    That distributor you point out should be the combined MG1/MG2, or at least MG2. MG2 takes the energy from the engine and sends it to the wheels for extra torque/boost, and I forget if it's MG1 or 2 that also sends it to the battery.

    You can check out this simulator to see what MG1 and 2 are doing all the time.
  6. Re:Article's comparisons are very short sited by NuShrike · · Score: 1 · on The Math Behind the Hybrid Hype
    Serial-hybrids, as they are called, are basically fully electric cars, with a gasoline/electric generator, so that they can use gasoline whenever electricity is not easily available. This is nothing like current hybrids, because current hybrids have a uslessly tiny bank of batteries, do not allow direct electric charging, and do not use their electric motors at highway speeds.


    The HSD is a series-parallel hybrid (hybrid-hybrid). It uses gasoline when electricity is not easily available, it allows direct electric charging, and it uses its electric motors at highway speeds.

    Try this simulator and reading this and try again.
  7. Prius engine simulator by NuShrike · · Score: 1 · on General Motor's EV1 Electric Cars Scrapped

    Check this out.

    This really demonstrates how a constantly engaged (no-cones & belt) CVT works and why the Prius's drivetrain is really revolutionary, should be lower maintenance cost lifetime, and is just plain geeky cool.

    Also, it shows what happens when you "drain" the drive battery down in that it doesn't stop the car from going, nor does it kill the battery.

  8. just cause by slartibarfast · · Score: 4, Funny · on Clear Solar Panels Double As Projection Screens

    Why don't we just install a "Spaceballs" style solar glass enclosure around the earth at 26000 miles from the center? Just high enough to keep the geostationary satellites inside (wouldn't want to lose our tv). The surface area should be about.

    131,657,416,704,000,000 sq/ft

    and cost

    $5,924,583,751,680,000,000

    in raw materials (maybe we could get a bulk discount)
    we should also try to cash in on a "free installation"

    The output of such a sphere would be

    500,298,183,475,200,000 watts continuous

    Or (for sake of easier calculation in an already complicated process) if only half of the sphere received light at any given time

    250,149,091,737,600,000 watts continuous
    250,149,091,737.6 kW continuous
    250.15 Petawatt continuous

    Power demand in 2002 for the entire world
    13,747,393,531.8 kW continuous
    0.0137474 Petawatt continuous

    sure every living thing on earth would probably die and we would enter a perpetual ice age from the lack of light and heat but, you could throw away the sunscreen and with all that extra energy maybe we could string up some halogens or something along the inside! We could also sell advertising space on it.

    All conversions made with http://www.onlineconversion.com/
    Power consumption data from http://www.eia.doe.gov/emeu/international/total.ht ml#IntlConsumption
    Geostationary orbit data from how http://octopus.gma.org/surfing/imaging/howhigh.htm l
    Radius of the earth from http://www.page.sannet.ne.jp/ikenoue/e-mode/earth. html (seems accurate)
    Output and cost from RFTA

    If you think that my math is wrong then check and let me know, too tired to think anymore.