JMU AFV Lab Blog

AutoBlogGreen has this interesting article about students in India creating an air powered motorcycle.  It appears that they took a small, probably 50cc two cycle motorbike, installed lightweight air tanks on it, and plumbed the air pressure to the engine.  The video below shows the result.  This same concept could be duplicated in our AFV Lab.  We have two smaller fiberglass SCUBA tanks available, as well as bigger, fiberglass CNG tanks that could be used, with some preparation, for such a project.  However, I don’t know about finding a two cycle moped; it would have to be an older model, I’m sure, as I don’t think two cycle motorbikes are currently sold in this country.

While the numbers of this project aren’t that impressive, it is a concept that could benefit from some development. For instance, since operating temperatures would be lower, maybe Teflon compression rings could be used instead of metal rings.  Historically, air motors haven’t been models of efficiency; their main purpose has been their ability to offer maintenance free rotational power in environments that needed such. Efficient use of energy was a secondary consideration.

Source: http://www.autobloggreen.com/2009/05/09/engineering-students-from-india-create-air-powered-motorcycle/

Engineering students from India create air-powered motorcycle

by Jeremy Korzeniewski on May 9th 2009 at 4:27PM

Just over a year ago, we reported on an air-powered moped that was built using carbon fiber tanks originally intended for firefighting use. Apparently, the idea has occurred to a few other people as well, as a group of engineering students from India have just completed another compressed air-powered motorcycle using a small 100 cc motorcycle as a starting point. Arshdeep Singh, one of the Air Bike’s designers, says:

“Our professors had asked us to create something which nobody has done so far and is also pollution free. Something which is economical and affordable to a common man. So we thought of inventing a bike, which runs on air. There is no combustion in this bike as it does not use any petrol, diesel or anything.”

At this point, the bike isn’t all that practical. Top speed is limited to just 18 kilometers per hour, but the team hopes to improve on the figure in future versions. Want to see and hear it run? Click past the break for a video.

[Source: Green Launches]

Source: http://www.autobloggreen.com/2009/05/09/engineering-students-from-india-create-air-powered-motorcycle/

All of us here at the Alternative Fuels Vehicle Lab have been watching and waiting for news from the Automotive “X” Prize, that Multimillion Dollar prize contest for vehicles that get more than 100 miles per gallon and are capable of being put into production.  Finally, on April 7 this news item came out.  I highly recommend anybody who has an interest in alternative fuels and supermilage vehicles to check it out, especially the video.

111 Teams Get Green Light to Advance in Multimillion Dollar Competition

PLAYA VISTA, Calif., (April 7, 2009) –The Progressive Insurance Automotive X PRIZE, a multimillion dollar competition designed to inspire a new generation of viable, super fuel-efficient vehicles, today announced its official list of 111 Registered Teams.

Having passed this first wave of judging, these teams now move one step closer to competing for their share of a $10 million prize purse that will be awarded to teams that win a rigorous long distance stage competition and can exceed 100 MPG equivalent fuel economy (MPGe).

The teams, which collectively represent 136 vehicle entries with 14 different fuel sources, include diverse groups from 25 U.S. states and 11 countries. Established automakers, emerging start-ups, universities and inventors are among those represented. Six of the Registered Teams remain confidential….

Go to http://www.progressiveautoxprize.org/news-events/press-release/111-teams-get-green-light-to-advance-in-multimillion-dollar-competition for the article

Peter Denbigh sent me the article below:

250th Delivery

These two items from gizmag and AutoblogGreen came to my attention recently.

The first, immediately below, from gizmag, introduces a novel system for an electric bicycle that uses both a hub mounted motor and a separate hub mounted battery on the other wheel.  This struck me as quite an interesting idea.  Having never ridden an electric bicycle of any kind, I can only speak from what I suppose to be the case.  With that caveat, I have always thought that the battery pack on any electric bicycle I have seen heretofore was mounted much too high for stability.  It seemed to me they were all mounted up on the top frame tube or on the down tube coming down from the fork bearing tube.  Of necessity, they had to be high so not to interfere with the riders legs when pedaling.  Having the battery mounted in the hub would seem to me to make for a lower center of gravity and, thus, a more stable bike.  Having the probable weight distribution close to 50/50 would have to make for a better handling bike, too.

Even though it’s dated earlier, the second item, from AutoblogGreen, initially fascinated me, as it combines motor, battery, control system, and charger in one hub.  It also adds a Bluetooth wireless throttle control, too.  Talk about state of the art, this concept has all the bells and whistles.  Then I started really analyzing it and I kind of lost my initial enthusiasm.  I can’t help but think that all that weight biased to one end or the other would negatively affect handling.  I also can’t see how they are going to get a big enough battery in that hub to deliver the performance they claim.  I suppose the bluetooth solves the problem of wiring a control on the handlebar to the wheel, but I can’t help but think it’s overkill.  It appears to me to be a solution in search of a problem.

Sources:  http://www.gizmag.com/e-electric-bicycle-electric-motion/11059/ and http://www.autobloggreen.com/2009/02/19/mit-greenwheel-simply-an-electric-bicycle-revolution/

February 23, 2009 With the increasing popularity of the electrically assisted pushbike we are starting to see some innovative designs hit the market. While hub motors are the number one solution for mounting the electric motor within a bike frame, either in the front or rear wheel, mounting the battery pack and motor drive electronics has remained a challenge when taking into consideration practically and aesthetics. The folks at Electric Motion Systems think they have the answer with a combination of a 750 watt rear wheel mounted hub motor with built-in motor drive electronics paired with a battery pack mounted in the front wheel hub.

e-electric bicycle

The E+ Electric Bike is available in six styles of bike that are all a variation on a hard-tail mountain bike. The E+ comes standard with a 750 watt BLDC rear hub motor but there is a high torque 85 Nm 1kw hub motor as an upgrade option. Both hub motors have built in inverters so there’s one less box to find mounting space on the bike frame for. The front hub mounted battery pack is something we’ve never seen before on an e-bike. The internal layout is very similar to a hub motor with the stationary inner structure (called the stator) attached to the axle while the outer housing is attached to the rim via spokes and rotates as part of the wheel. Thirty NiMH battery cells are arranged in six groups of five cells arranged in a polygon layout parallel to the axle and mounted on the stator. The battery pack puts out 36 volts at 9 amp hour giving a battery capacity of 324 watt hour. (0.324kw/hr). No electric only range is quoted as this is very dependent on terrain, how much you pedal and the amount of regeneration possible but each battery charge should give between 20 and 40 miles (32 – 64 km). A full charge from a 110v wall socket will take four to six hours and cost about $0.03.

The E+ has a handlbar mounted LCD display where the rider can select 19 different cycling modes that range from full electric to pedal only modes. One of the E+ modes offers to let you set the cycling mode for increased resistance to give you a greater workout even if there are no hills in sight. While this could well be a useful feature, it also highlights one of the side effects of BLDC hub motors - they do not freewheel. Because a BLDC hub motor contains permanent magnets even when no power is applied there is still magnetic attraction between the magnets and the poles on the stator meaning there is always cogging resistance. The company says this should only be a problem with a flat battery on extended flat surface riding, as with any kind of undulation the motor will regenerate on the down hills just enough to provide power assistance up the next hill.

The LCD-display also shows speed, distance traveled, battery capacity, cruise control option, and 19 cycling modes. It also displays trip-specific data such as distance of trip, duration, and average speeds. Pocket-sized and removable for safe and easy storage, when the display is removed, the battery is disabled and the motor is put into full resistance mode, making pedaling virtually impossible. This unit has backlighting (0-100%) and automatically adjusts the contrast of display depending on outdoor conditions.

The Electric Motion Systems E+ Cruiser and E+ Mountain Bike cost USD$3,495.

One definition of the word elegant is “to be gracefully concise and simple.” In the future, the dictionary just might include the GreenWheel as a product that illustrates this principle perfectly. From the MIT Smartcities team that gave us the stackable cars concept and the RoboScooter (still a go), comes a wheel that can turn an ordinary bicycle into a very desirable electric one in an easy, cost effective manner. Enclosing a motor, A123 Systems batteries and a generator into a small aluminum pancake hub, the GreenWheel can give you up to 25 miles of propulsion, or much more if you don’t mind pedaling. Unlike conversions kits from the past, it forgoes running wires the length of your bike by incorporating the magic of bluetooth to control the twist-throttle.

Over a dozen different configurations of the GreenWheel are scheduled to be tried and tested by a variety of cyclists this spring. Once the the team analyzes their feedback, an ultimate configuration of power, speed and cost will be settled on and mass production will get under way. With an estimated cost of “several hundred dollars,” they better plan on making a lot of them since not only are they a wonderful “solution” for several cities and ridesharing programs already showing interest, but in a world-economy that can’t afford to buy cars the way they used to, the GreenWheel should have a bright future.

[Source: MSNBC]

I ran across this item on the Autobloggreen.com website today. The picture doesn’t really correspond to the title’s promise, as the four seat, wheelchair accessible version would be the one most likely to use Handicapped Parking. However, it uses diesel power in a Plug In Hybrid Electric Vehicle. Diesel makes more sense in a PHEV, to my way of thinking. When you consider all the single speed stationary pumps and generators out there that are diesel powered and have already proven their efficiency and durability, it is evident that diesel would be a logical choice for recharging batteries in a PHEV. After all, there are thousands of diesel powered semitrailer refrigeration units like ThermoKing or TransiCold out there plugging merrily along for years in applications and environments that make a PHEV look like a garden party. And all of the modern diesel emissions controls like regenerative particulate filters and high pressure common rail fuel injection systems make the “stinking, smoking old diesel” a thing of the past. Diesel seems like the ideal ICE solution for a PHEV. Go to http://www.autobloggreen.com/2009/02/01/whats-green-three-wheeled-and-can-park-by-the-blue-signs/ to see the original post and comments. Also, go to http://www.biotrike.com/ for the home page of the Bio-Trike.

What’s green, three-wheeled and can park by the blue signs?

by Sebastian Blanco on Feb 1st 2009 at 9:24AM

Using fewer resources to get around isn’t limited to any particular group of people. Heck, there are more 43 percent electric wheelchairs in the U.S. than electric vehicles (this statistic brought to you by the Department of Made Up statistics, but I hope my point is clear). If you often travel in a wheelchair but like the idea of an aerodynamic, biofuelled ride for your longer trips, check out the BioTrike-B3XH. Sure, all of the standard add-on equipment that helps the differently-abled (is that the right term these days?) drive an SUV would work just as well on the Volt or the Focus EV, but the BioTrike (the four-seat version, anyway) has been designed from the ground up to be accessible to people who use a wheelchair or are in other ways physically handicapped.

The BioTrike is a tadpole-style three-wheeled plug-in hybrid vehicle that burns diesel (or biodiesel, natch) in a Caterpillar-sourced engine. The builders claim that the range with a full tank and a full charge is somewhere between 700 and 900 miles. They don’t give a lot of details on the powertrain, but do say that the BioTrike has a 50-mile electric-only range. Prices start at $23,999 for the two-seat version and rise to $35,999 for the four-seat, wheelchair-ready version. Options extra.

Source:  http://www.autobloggreen.com/2009/02/01/whats-green-three-wheeled-and-can-park-by-the-blue-signs/

I came across this interesting YouTube video the other day and thought it could be an interesting concept to modernize. Go to http://www.youtube.com/watch?v=t1fGxk2r-bY to see it. The car featured in the video is over 40 years old!  While viewing the video, I had one of those “light bulb” moments.  As I see it, the problem with electric bicycles, scooters and the like is the lack of weather protection.  Why not make an electric tricycle with weather protection?  I envisioned a vehicle similar to the video subject with an electric motor for power and lightweight LiFePO4 batteries for an energy source.  It could have a simple aluminum frame with a lightweight body of fiberglass, or, even better, carbon fiber.  Since this body would be for weather protection only and not load bearing, it would be light weight and simple to build.  Given the relatively short distances this vehicle would usually travel, even a heater could be optional, as the driver could “bundle up” to drive it, but not to nearly the extreme that I’ve seen on bicyclists and scooter riders the last few days.  As it would have only three wheels, it would qualify as a “motorcycle” and not be subject to all the safety standards of an automobile.  I can see this as an AFV Lab project.  What think you?

This article was on the Science Daily website last week. It appears that extensive educating of children is necessary if mass transportation, smaller vehicles, and greener transport options are to be more popular in the future. It was written in England with information gathered there, but there’s no doubt that it applies worldwide.

Source: http://www.sciencedaily.com/releases/2008/12/081204074658.htm

Young People Choose Cars Above Greener Transport Options

ScienceDaily (Dec. 5, 2008) — Young people find the prospect of driving cars more attractive than other modes of travel that are kinder to the environment, according to research conducted by a researcher at the University of the West of England.

Dr Tilly Line has just completed a PhD entitled ‘The attitudes of young people towards transport in the context of climate change.’ Dr Line’s work examined how young people are influenced by knowledge about climate change when it comes to making choices about how they will travel when they become adults. The study concentrated on the views of young people aged between 11 and 18 years and the findings found an overwhelming desire by young people to drive.

Dr Line explains, “Specific attention was give to how climate change considerations affect these intentions. Overall it was found that the participants have a general understanding of the link between transport and climate change, but when it comes to their attitudes towards different modes, they place higher value on identity, self-image, and social recognition than the environment. It is this that explains their positive attitudes towards the car and driving in favour of alternative modes. For example, the participants pointed to learning to drive as “a mile-stone in teenage life” - something that everyone does at seventeen. They also pointed to the car as a symbol of social status and the importance of their role as a driver in their friendship groups.”

Comments from those who took part include:

• “Limousines, they’re like a really special thing for like if you’re posh or you have lots of money. That’s why I want to have one of them.” (11 yr-old female participant)
• “Me and my friends share lifts to school in the mornings. Now our friends, all of our group have actually passed, we take it in turns to drive places…we share everything.” (18 yr-old female participant)

Dr Line continues, “Although it is recognised that transport policy makers are likely to require an understanding of the degree to which these values and attitudes are universally held among young people, it is suggested that policy aimed at reducing the public’s reliance on the car and increasing their use of alternative modes, should recognise such values, particularly in relation to soft policy measures (including marketing activities) targeting the socio-psychological motivations for travel choice. For example, one answer may be to promote cycling as a signal of success and ‘being cool’, rather than promoting the environmental benefits of this behaviour.”

“The importance of climate change shouldn’t be forgotten however. It isn’t the case that young people dismiss this issue, but more that they feel powerless to make a difference. I found that the young people think of climate change as being something that will not be felt until far off in the future and that there is little that they can do as individuals.”

• “There are little things you can do, but nothing that will change the world, because individually we’re only little people.” (11 yr-old female participant)
• “I’d like to change it. But I know I wouldn’t be able to, just me. If I really tried I know that I would just be wasting my life trying to do one thing I knew I couldn’t change.” (11 yr-old female participant)
• The participants also suggested that although they receive information about what climate change is, they lack information about what they can do to tackle it:
• “You don’t really get told what to do. …Instead of just saying ‘we’re polluting the world’, tell us what we can do about it.” (11 yr-old male participant)

Dr Line concludes, “On a positive note, I found that a number of the young people welcomed the idea that hard policy ideas leading to enforced travel behaviour away from reliance on cars would lead to a change in behaviour. But that this would only be possible if walking, cycling and public transport was easily accessible and reliable. This was even the case amongst those participants already driving and it seemed to stem from the belief that such action would empower more people to attempt to tackle climate change through changes in their travel behaviour as everyone would have to behave in the same way.”

• “I think some people may want to help the environment but they don’t do anything about it but then again if they were forced to then they’d have to. …I mean eventually it’s going to happen anyway. It’s going to come to a point in time where there’s going to be a ban on cars or something …there’s just going to be no feasible way they can have all the cars on the road.” (18 yr-old male participant)

Source: http://www.sciencedaily.com/releases/2008/12/081204074658.htm

This article was on the AutoBlogGreen blog. It relates the story of a ‘72 Datsun (When first imported to our country, Nissan badged its cars as “Datsuns”) converted to battery electric power. And I do mean “POWER.” Go to http://www.opb.org/programs/ofg/videos/view/56-Electric-Drag-Racing to see this amazing little car! This unassuming little car beats Vettes and Bimmers in the quarter mile.

Source:  http://www.autobloggreen.com/2008/11/17/drag-racing-white-zombie-gets-some-oregon-public-tv-love/

Drag racing White Zombie gets some Oregon Public TV love

Posted Nov 17th 2008 at 2:40PM by Domenick Yoney

Filed under: EV/Plug-in, USA

There seems to have been a spate of posts here on ABG lately about electric vehicles running down the quarter mile strip. The Killacycle set a world record, the Tesla Roadster pulled down a respectable time and the Dodge EV prototype showed gave the Hemi-powered Dodge Challenger a go. Heck, we even featured a sweet electric Pinto not so long ago. While that may seem like plenty for most people, we’re really enthusiastic about performance cars that don’t burn gas (or diesel, for that matter) and so when we learned from a reader about the White Zombie being featured in a nicely-produced segment for Oregon Public Broadcasting, we had to bring it to your attention. Yeah, we’ve talked about the ‘Zombie before but its been over a year and while it might not be as refined as the Tesla Roadster that we spill so much ink on, it is faster. So without further ado, check it out!

[Source: Oregon Public Broadcasting]

Source: http://www.autobloggreen.com/2008/11/17/drag-racing-white-zombie-gets-some-oregon-public-tv-love/

This article was on the Gizmag blog this morning. KTM has applied for patents on a hybrid dirt bike that has conventional drive to the rear wheel as its other bikes, but adds in-wheel electric motors to both front and rear wheels for, in effect, a hybrid, all wheel drive motorcycle. KTM announced a hydraulic AWD motorcycle earlier, but I like this idea better. After all, wire is lighter than hoses with hydraulic fluid, and with the small, powerful hub mounted motors now being used in electric bikes, an electric motor is probably substantially lighter than a hydraulic motor. However, I am still concerned about the effect of the substantial increase in unsprung weight and its effect on handling. In addition, I would think tires, rims, wheels and bearings would have to be heftier to handle the increased inertia of the motor assembly, further increasing the unsprung to sprung weight ratio with its attendant adverse effect on handling. We’ll wait and see.

Source: http://www.gizmag.com/ktm-2wd-hybrid-dirt-bike/10348/
(Be sure to check out the 4 images of the patent application drawings)

KTM 2WD hybrid dirt bike

November 12, 2008 Patents lodged by Austrian Competition Motorcycle Manufacturer KTM indicate that a hybrid 2WD dirt bike is not far away. Common sense dictates that a motorcycle with both wheels driven (2WD) will go around corners faster and with greater surety than one equipped only with the motorcycle’s traditional rear-wheel drive, much the same as 4WD cars offer superior traction to their rear or front wheel drive brethren. A lot of interesting development work has been done over the last decade with YamahaOhlins 2WD system on selected enduro bikes in Europe, Christini developing mechanical AWD (aka 2WD) kits for Honda and KTM dirt bikes and KTM talking publicly about its hydraulic 2WD development. Now it appears KTM is to employ a small electric motor on each wheel to supply additional torque when it’s needed. A recently filed set of patent applications heralds some exciting prospects. http://en.wikipedia.org/wiki/Motorcycle#Dirt_Bike/Trials_Bike offering http://en.wikipedia.org/wiki/Bicycle Honda

Back in 2004, we wrote about KTM’s prototype hydraulic 2WD system which project leader Wolfgang Felber described as having a pre-set torque distribution between the front and rear wheel. He also commented, that although the system was already fairly well developed, it could “definitely be improved upon.”

Having both wheels driven on road, trail or competition two-wheeled machinery offers many advantages. On almost any surface, 2WD offers better traction and stability, but it offers a greater advantage for slippery, wet or loose surfaces, on larger machines and is particularly useful for inexperienced and non-expert riders.

Interestingly, Kurt Nicol of KTM described the 2wd advantages extremely well here, and there’s an excellent account of testing the Yamaha 2wd system on MCNews.com.au – our take is that existing 2WD systems don’t quite offer enough advantage for the expert rider to be worth their additional weight – yet!

The additional weight of a hydraulic system makes it only a marginal advantage for an expert rider, and it’s only a matter of time before a suitable light weight electric motor is available that will offer far more sophisticated, (most likely computer-controlled) power delivery from the front wheel. http://en.wikipedia.org/wiki/Electric_motor

The bike pictured in the patent images has the shape of a desert racer - KTM has dominated desert racing for a decade - a desert racer will also be one of the most obvious beneficiaries of the design as 2WD offers much greater stability and better steering in deep sand. http://en.wikipedia.org/wiki/Patent

Perhaps most significantly, this is the first time that a motorcycle manufacturer with genuine race credibility has moved into the electric/petrol engine hybrid area and if KTM does bring the 2WD hybrid to market, it will be entirely to gain a competitive advantage. KTM’s ethos is to deliver “ready to race” motorcycles, which guarantees that if it don’t work, it won’t be on its motorcycles. http://en.wikipedia.org/wiki/Gasoline http://en.wikipedia.org/wiki/Ethos

Almost certainly we’ll see a lot more 2WD motorcycles in the next few years as electric motors develop and proliferate to accommodate the growing electric bike industry. One likely technology contributor to the field of 2WD via electrically powered front wheels will be the motor suppliers to the burgeoning electric bicycle industry which demands very lightweight in-wheel motors. Given that the front wheel of a motorcycle with 2WD needs roughly 15 % of total power, the power output needs for the front wheel electric motor are not that great.

Even more intriguing is the use of an electric motor in the rear wheel and the advantages this offers in delivering predicatable, linear torque at low speeds (perfect for KTM’s strength, it’s core dirt bike clientele) as well as the brutal horsepower of KTM’s entire dirt bike range.

Source: http://www.gizmag.com/ktm-2wd-hybrid-dirt-bike/10348/

This article was on the AutoBlogGreen.com blog this morning. It is an interesting application of the technology of individual electric motors in each wheel driven by an ICE powered generator.  I have wondered how long it would take for technology and innovation to develop to the point that this could be done.  After all, practical application of the idea has been around for at least a half century or more.  The diesel electric railroad locomotives that ended the era of the steam engine railroad locomotive utilize the same technology.  A diesel engine drives a generator which in turn drives electric motors in each drive wheel.

Web surfing from this site led me to the “PML Flightlink” site, http://www.pmlflightlink.com/ which, in time, led me to this very interesting site, http://www.pmlflightlink.com/archive/news_mini.html. The Pml Flightlink Ltd company has converted a mini to its system, too, but what makes this particular conversion unique is that it has no friction brakes, but relies strictly upon regenerative braking. Quite interesting, I think.

SEMA 2008 Preview: PML Flightlink to show Ford F-150 PHEV

Posted Oct 25th 2008 at 4:39PM by Jeremy Korzeniewski

Filed under: EV/Plug-in, Hybrid, Ford, SEMA Show

PML Flightlink, makers of the 640-horsepower electric MINI from 2006, is headed to SEMA this year with a new concept vehicle to display. Based on a full-size Ford pickup truck, it would be hard to come up with a platform further from the MINI that the company originally used. Still, the concept F-150 will feature a similar setup to those used on PML’s earlier concepts, including the Volvo ReCharge concept. The motors themselves are a permanent magnet pancake style and are integrated within the wheels. This design could potentially rid the truck of many drivetrain components such as, of course, the engine and transmission as well as the driveshafts and transfer case that would otherwise be necessary for a four-wheel drive truck. Instead of going the full electric route, though, the SEMA-bound F-150 will use a plug-in series hybrid powertrain, so the truck’s on-board battery can be recharged by the stock gasoline engine. We’ll see if we can’t track down more details closer to the truck’s debut.

Source: http://www.autobloggreen.com/2008/10/25/sema-2008-preview-pml-flightlink-to-show-ford-f-150-phev/