New New technology for desert racing for the next decade

Discussion in 'Desert Racing' started by superkart, Jan 2, 2010.

  1. superkart

    superkart Member

    Joined:
    Mar 19, 2008
    Location:
    Lake Elsinore California
    I have been doing some research regarding electric off-road vehicles. I believe you will see affordable energy storage systems that will allow electric race cars to successfully compete in off-road racing in the next 1-5 years. The new Chevy Volt type system is the way to go as the range is based on how much fuel you have on board. It has a 16kw lithium power pack. Many of these race cars will use sealed hub motors and have small (range extender) turbocharged or supercharged engines coupled to generator to charge the batteries or super capacitors and can supply directly to the electric motor. New storage technology will eventually pave the way for pure electric race cars without the need of an engine. Electric motors have more torque than most engines and are far more reliable with less parts that can break. Regenerative braking will recapture energy when braking or going downhill. I also built a 4.8kilowatt sandrail about four years ago for my boys so I know the technology is viable. This will be the future of desert racing one day!

    [nomedia]www.youtube.com/watch?v=8qDZOBQs60w[/nomedia]

    Here is an article about this technology: http://www.treehugger.com/files/2006/08/the_hybrid_mini.php

    A British engineering firm has put together a high-performance hybrid version of BMW's Mini Cooper. The PML Mini QED has a top speed of 150 mph, a 0-60 mph time of 4.5 seconds. The car uses a small gasoline engine with four 160 horsepower electric motors — one on each wheel. The car has been designed to run for four hours of combined urban/extra urban driving, powered only by a battery and bank of ultra capacitors. The QED supports an all-electric range of 200-250 miles and has a total range of about 932 miles (1,500 km). For longer journeys at higher speeds, a small conventional internal combustion engine (ICE) is used to re-charge the battery. In this hybrid mode, fuel economies of up to 80mpg can be achieved.

    Explains Martin Boughtwood, PML’s MD: “Until now, most electric vehicles have been little more than souped-up milk floats, limited by range and speed, with compromised performance. For those with a green conscience who also value an enhanced motoring experience, there is still something missing.

    “Working in partnership with our customer, Synergy Innovations, we set out to demonstrate what our electric wheel technology is capable of. We simply took a standard BMW Mini One, discarded the engine, the disc brakes, the wheels, and the gearbox. These components were replaced by four of our electric wheels, a lithium polymer battery, a large ultra capacitor, a very small ICE with generator (so small it almost fits alongside the spare wheel), an energy management system and a sexy in-car display module.”

    The benefits of PML in-wheel drive technology are;

    * It is adaptable to other vehicle chassis
    * It eliminates the need for gearing and mechanical drive train
    * It allows more space inside the car

    The vehicle has three driver-selectable modes of operation:

    * Eco mode for town/city frequent start-stop driving;
    * Normal mode for daily commuting and ICE- equivalent operation, and
    * Sport mode for super car performance.

    Other notable features include:

    * No (mechanical) brakes means returned energy!

    All braking is performed by the wheel motors acting as very efficient electrical generators which return almost all of the energy back to the battery system. The beauty of this dual-circuit, ultra safe system is that your green conscience can be quite content even when accelerating hard, since you are assured of collecting most of the expended energy when it is time to slow down rapidly.
    ABS as standard – even when accelerating

    Because the wheels are high performance motors, ABS comes as a standard function built into each wheel’s software. Now anti-skid can also be applied to acceleration since the motor can smoothly control torque delivery to/from the road in both cases. Flooring the brake or accelerator hard merely results in controlled maximum torque, giving the shortest possible stopping or acceleration time.
    Clever wheels

    The technology eliminates the need for crude differential gears to share power between left and right sides. The wheels are in constant communication with each other deciding 1000 times each second how much torque share is optimum for the current driving conditions. Should one wheel detect a slippery surface and take appropriate anti-skid actions, the other wheels are aware of this instantly and adopt an appropriate compensating strategy to keep the vehicle as stable as possible.
    640 brake horsepower – for life!

    Each wheel develops 160bhp - 640bhp in total. The original Mini One develops less than 100bhp with an engine that weighs nearly double the weight of the four electric wheels! Apart from wheel bearings there are no wearing parts in the electric wheels; this means the horsepower stays for the life of the vehicle - and beyond.

    As the battery level reduces, the rear mounted ICE/generator starts to automatically top up the battery. So when you arrive at your destination you can simply park the vehicle knowing that when you return the battery will be replenished. Alternatively you can take advantage of lower cost mains electricity and plug in to recharge. So you never need to worry about battery capacity or how to recharge. During operation, as the battery level falls the generator cuts in, enabling an average speed of 60 – 70mph to be sustained with no further battery depletion.
  2. Travisfab

    Travisfab Active Member

    Joined:
    Jun 3, 2003
    Location:
    San Diego
    Motors on wheels/hubs scare me. For the street sure, but how about pounding 3 foot whoops at 75mph? Off road vehicles already have massive amounts of unsprung weight, another 50-100 pounds (guess)/wheel seems pretty sketchy.
  3. Fast Eddy

    Fast Eddy Member

    Joined:
    Nov 6, 2008
    Location:
    Kansas City Mo.
    I can see it now, cars with giant speakers on them playing loud music as we race through the desert. We won't have to put music to the videos anymore! You'll know who's chasing you by what folks like to play when racing. I'll be the one playing AC/DC. I want to reserve that right now.
  4. Travisfab

    Travisfab Active Member

    Joined:
    Jun 3, 2003
    Location:
    San Diego
    Isnt that what we already do?
  5. superkart

    superkart Member

    Joined:
    Mar 19, 2008
    Location:
    Lake Elsinore California
  6. Ol' Curmudgeon

    Ol' Curmudgeon RDC's resident crackpot

    Joined:
    Dec 29, 2004
    Location:
    The Cloud
    Unsprung weight off road = bad ju-ju.
  7. WickedGravityVideo

    WickedGravityVideo Well-Known Member

    Joined:
    May 8, 2006
    Location:
    Grand Junction, CO
    I will bet you $$ that there will NOT be competitive electric off road race vehicles within 5 years. I did EV research in the late 80s and early 90s --- industry predictions were way off back then. Road vehicles OK, but not off-road racers. Electrochemical storage density is the primary limitation, ie, not room for enough batteries. Regen braking does not return even half of the energy spent ... more like 10%, i believe. Chevy Volt -- i hope the gov't is prepared to pay people to buy them (big tax credits).
  8. Kartman

    Kartman Media Goon

    Joined:
    Apr 3, 2006
    Location:
    Scottsdale, Arizona
    Agreed. F1 teams spent hundreds of millions last year to develop KERS and only 2 teams got it to work and even then it did not work all that well.
  9. Mumzy

    Mumzy Well-Known Member

    Joined:
    Nov 15, 2006
    Location:
    Orange, CA now in Dutchess County New York
    I agree, but they did get an extra umpfff of tourque for a couple of seconds after a lap of braking. The F1 system also weighed less than 100lbs. Think about adding a hundred lbs to a buggy and then being able to store enough extra power (torque) to pull out of that problem, or run ALL or your lights and batteries off of the energy you generate in the bumps = less robbed hp from the motor = more ponnies to race with. There is more to KERS than putting power directly to the wheels.
  10. superkart

    superkart Member

    Joined:
    Mar 19, 2008
    Location:
    Lake Elsinore California

    The technology has drawmatcally changed since 1990s.
    See the following websites:

    http://www.acpropulsion.com/

    http://cleantech.com/news/3174/eestors-weir-speaks-about-ultracapacitor-milestone

    http://www.fveaa.org/fb/Low_Emiss_Range_Ext_149.pdf

    www.grouplotus.com/mediacentre_pressreleases/image/459.pdf

    http://www.rasertech.com/media/videos/the-electric-h3

    Raser Technologies Unveils 100+ MPG Plug-In Hybrid Hummer at THE SAE World Congress In Detroit

    Technology in New Electric Hummer Could Drive Bold Leap Ahead for U.S. Automakers, Making Popular Trucks & SUVs ‘Greener Than a Prius’

    Raser Technologies, Inc. unveiled a 100+ mpg Hummer H3 powered by Raser’s plug-in hybrid E-REV (Extended-Range Electric Vehicle) at the 2009 SAE International World Congress, Cobo Center, Detroit, MI.

    Raser developed the 100+ mpg Electric H3 demonstration vehicle working closely with Hummer. Just one year ago at the 2008 SAE World Congress, Raser and its development partner FEV Inc., Auburn Hills, MI, a leading automotive integrator, introduced Raser’s E-REV power train, similar in function to the Chevy Volt but designed for use in a variety of larger full-sized SUVs and light trucks. The vehicle was developed in association with the Plug-in Hybrid Development Consortium, co-founded by Raser along with leading electric utilities, lithium ion battery companies and other automotive technology companies.

    [ame="http://www.youtube.com/watch?v=G2psBtyqwgY&feature=PlayList&p=6035F81F69A2B15D&playnext=1&playnext_from=PL&index=55"]YouTube- RASER HUMMER H3 100 MPG HYBRID SUV[/ame]

    If EEstor is sucessful then you will see electric race cars very soon.

    superkart

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