Thursday, March 26, 2009

New Model Tesla

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First Look at Tesla's Stunning Model S

By Chuck Squatriglia EmailMarch 26, 2009 | 7:20:06 PMCategories: Tesla Motors

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Los Angeles — Tesla Motors' Model S is a stunningly beautiful car that that builds upon the cachet of the Roadster and proves the company is serious about pushing electric vehicles into the mainstream.

Company CEO Elon Musk compared the luxury and practicality of his car to the BMW 5 series and Mercedes Benz CLS sedans and said history will place it alongside the Ford Model T. His car, he said, is that important and will play a similar role in reshaping the auto industry.

"This is one of the most historic cars," Musk said moments before pulling a black sheet off a silver prototype of the Model S, which the company all but swears will be in driveways by the third quarter of 2011. "We are trying to accelerate the EV revolution and get us off oil."

Musk's hyperbole aside, the Model S is as important to the company as it is gorgeous to behold. Getting it built will prove Tesla is more than a niche player, help push EVs into the mainstream and give Tesla a strong position in the emerging electric-car market. But perhaps more than that, a seven-passenger sedan with a range of up to 300 miles will prove EVs can be sexy and practical.

"It's fantastic. Fantastic," said Chris Paine, director of the film Who Killed the Electric Car. "A lot of people ask if electric cars can be practical. This car is definitely practical. It's a remarkably important car. This car shows that it can be done and it will be done."

The Model S will have a list price of $57,400, but the $7,500 federal tax credit for EVs and plug-in hybrids will bring that down to $49,900.

But bringing the car to market by 2011 won't be easy, and Tesla has no time to lose. General Motors, Ford and Nissan are among the major automakers promising to have EVs on the road by then, and Tesla also is facing competition from a growing number of startups, including Fisker Automotive.

Musk isn't worried.

Tesla2_2 "I hope the Volt is out," he said. "I hope Nissan has its car. I hope everyone has an electric car. The most we can do as a company is serve as an example to the auto industry. We want to accelerate the adoption of electric cars."

The sleek car is clearly influenced by European aesthetics. It's long and low, with an aggressive stance and a muscular look. The styling, by Franz von Holzhausen — who designed the Pontiac Solstice and Saturn Sky, and then worked for Mazda before joining Tesla — drew widespread praise. There were few in the room who didn't want to drive it. Only prospective customers were taken for a short spin down the street.

"Oh my god," said Paul Scott, a founder and board member of the EV advocacy group Plug In America. "I went in with high expectations, and my expectations were exceeded. The car's gorgeous. I love it. I picture myself in this car and I really want one."

The car has drawn comparisons to the Jaguar XF and the Maserati Quattroporte, and although von Holzhausen didn't cite those vehicles as influences, he welcomed the association.

"I hear Jaguar, Aston Martin, Alfa Romeo, and I think that's positive," he said. "People have positive associations with those brands, and I think that's a good reflection on Tesla. If they said it reminds them of the (Ford) Pinto or the (Pontiac) Aztek, we'd have problems."

Von Holzhausen said it was important to make the car athletic but not brawny and give the car a sense of lightness and efficiency.

"The inspiration is more Lance Armstrong than Lou Ferrigno," he said.

That's not to say the car lacks muscle. Tesla is going head-to-head with the likes of BMW, Mercedes, Audi and Jaguar with the Model S, which means the car's gotta perform as well as it looks. To that end, Tesla is developing a drivetrain that builds upon the technology underpinning the Roadster.

The Model S will use a liquid-cooled motor with a peak output of 300 kilowatts, or about 402 horsepower. Thats a significant hike over the Roadster, which puts out 248 horsepower. Of course, the Model S is a significantly bigger car — it's expected to weigh about 4,000 in production trim — and it will be a family car, which means it needs to be able to haul all the stuff a family hauls.

"We wanted to make sure that when you load the car up, you can still get over the Grapevine," J.B. Straubel, chief technology officer, said, referring to the mountain pass that separates Los Angeles from points north. "It increases real-world usability."

Power comes from a lithium-ion battery pack with either 5,500 or 7,800 cells. It weights "about 500 kilos," or roughly 1,100 pounds. Customers can choose from three packs that will deliver 160 to 300 miles per charge — with the cost of the pack rising with the range it provides. Scott, the EV advocate, called it a brilliant move.

"While it's great to have 250 or 300 mile range, it's completely unnecessary for most people, and you're paying for that," he said. Giving people the option of a 160-mile version, a 230-mile version or a 300-mile version is a great idea."

Musk said the 300-mile version of the battery will have a "quick charge" feature that will allow it to be recharged in 45 minutes, although he didn't offer any details. He said advances in the battery chemistry and construction increased volumetric efficiency over the Roadster's pack by 50 percent.

The battery pack is laid out along the floorboard of the car, and the motor and electronics module sit between the rear wheels, creating a large, open interior. Musk made maximizing practicality a prime directive in designing the car, and he made a point of noting how much space the interior — which is luxuriously decked out in a few acres of leather and wool — provides. He wouldn't let us try it, but Musk insists you can fit a mountain bike in the back without removing the wheels, provided you put the back seats down, and he said the car will carry a 50-inch TV. There's also a flip-up rear-facing seat at the back of the car that's big enough to carry two small kids — hence the seven-passenger designation.

"It's just like the old station wagons from the '70s with the seat in the back," Musk said. "It's there for the occasional trip."

Tesla will have its work cut out for it meeting the 2011 deadline, and just about everything will have to go Tesla's way. Aside from lining up suppliers and navigating the government regulatory maze, Tesla still has to build a factory to assemble the car. Musk says the company is close to finalizing a deal for a factory in Southern California, but he wouldn't offer specifics. He's also confident the Department of Energy will come through with a $350 million loan to get the factory up and running. And if Tesla doesn't get the loan? Musk says he'll figure something out.

"There should be no question that we'll make this car," he said emphatically. "This is the beginning of a new era in transportation."

More hyperbole to be sure, but you can't discount it entirely because Tesla has an advantage over the big automakers — it already knows how to build an electric car that works. There are more than 250 Roadsters in driveways right now.

"You have to give Tesla the benefit of the doubt," said Aaron Bragman, an auto industry analyst with I.H.S. Global Insight. "It's the only company actually producing an electric vehicle right now. At the moment, Tesla has the halo."

Photos: Jim Merithew/Wired.com

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Monday, March 23, 2009

Wednesday, March 18, 2009

New E Scooter Tech

From http://blog.wired.com/cars/2009/03/new-scooter-eng.html

New Scooter Engine To Electrify Two Wheelers

By Tony Borroz EmailMarch 18, 2009 | 3:53:30 PMCategories: Electric Vehicles

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Electric scooters, once little more than playthings that might turn into something approaching viable transportation, have blossomed into actual, streetable rides offered from several manufacturers. Now comes word from a new electric motor manufacturer that looks to set new performance and efficiency benchmarks in the electric scooter world.

The new engine isn't from Japan, Korea, Germany, or France, it's from Austin Texas, and it's currently being produced and used on the roads of Vietnam.

The company is called KLD, and they say that their new motor represents a substantial shift in electric motor design, one that looks to overcome motor inefficiencies and leapfrog EV drawbacks that other manufacturers try to overcome via battery or other technologies. For example, Vectrix makes an amazing EV Scooter that uses a traditional electric motor design. But they are able to achieve higher range through the use of high cost batteries. The motor Vectrix uses is fairly conventional and still has the classic inefficiencies of traditional motors and requires a transmission.

The motor system used by KLD is made from a composite material that generates significantly less heat. And less heat means greater efficiency. Through the use of an innovative nano-crystalline composite material, the motor conducts energy ten times more efficiently than traditional iron-core motors, eliminating the need for additional cooling mechanisms plus it gives greater responsiveness. With its high frequency to low RPM ratio, the KLD motor does not need a transmission. And best of all, it uses standard batteries.

The cost of a scooter with a KLD motor system in the Vietnamese market is $1500 to $2000, or about what a run of the mill EV scooter costs here in the U.S. KLD says that by increasing the production run, the economies of scale should bring the costs even lower for large markets.

KLD Energy Technologies, which is based in Austin Texas, designed the motor, as well as the system’s computerized controller specifically for the higher-frequency output of the motor. They say that working together, the motor and controller make for a highly responsive system allowing EVs to attain speeds and performance levels on-par with gas-powered vehicles. KLD is working with Sufat, the leading Vietnamese-based scooter manufacturer, to develop a new line of scooters designed to integrate electric motor system.

Christian Okonsky, founder and CEO of KLD Energy Technologies said his motor “... is able to perform at a higher level because we’ve fundamentally taken a new approach to its design. The new scooter will easily maintain and reach speeds comparable to gas-powered vehicles— significantly outperforming traditional electric scooters." The KLD equipped Sufat electric scooter easily achieves speeds of 50 to 55 miles per hour, double those of traditional, electric motor scooters, and reach 0 to 50 miles per hour in less than ten seconds, according to the company. And since it's a transmissionless system, the two-wheeled vehicles will also have a reduced cost of ownership.

You wouldn't think that going with a Vietnamese manufacturer makes sense off the top of your head, but consider this, according to Vietnamese government figures, Vietnam has over 22 million scooters on the road, which is a huge number of a place the size of New Mexico, so they DO know scooters.

Wednesday, January 28, 2009

Aero Civic

From www.aerocivic.com I think I just posted the entire webpage.

Aerocivic above view



Aerocivic above view



Aerocivic profile


Aerocivic driving


Aerocivic above


Aerocivic elevated rear 3/4 view


Aerocivic front


Aerocivic above rear


Aerocivic rear


Aerocivic front 3/4 view


Aerocivic rear 3/4 view


Aerocivic boat tail construction


Aerocivic SuperMID fuel consumption computer


Aerocivic fuel log



I started this project after the Hurricane Katrina-inspired gas price run up, as I have a long commute and, except for a few hybrids, the car companies were busy introducing models with ever poorer gas mileage.

Overview:

  • Background - the car & aero influences
  • Research & construction
  • Coastdown testing to calculate Cd
  • What fuel economy does it get?
  • What's it like to drive?
  • Compared to "regular" cars...
  • Aero observations: bugs, leaves & deer
  • The aerodynamic modifications in detail
  • Cost
  • Aerocivic media coverage & links
  • Other aeromodded vehicles

Background - the car & aero influences

My car is a 1992 Honda Civic CX which I bought new, has an EPA fuel consumption rating of 47 mpg (US) highway / 39 city (5.0/6.0 L/100 km ... 20.0/16.6 km/L ... 56.4/46.8 mpg (Imp.)), and averaged mid 40's when driven "normally".

Before Katrina, I had been using hypermiling techniques to get me up to an average in the high 50's, but I had to keep the speed below 55 mph (89 km/h) to achieve it, which can be inconvenient to do on busy highways. About this time I had read Phil Knox's article "Free Fuel Riding on the Wind" in EV World where he talked about using commonplace materials from the local hardware store to lower his truck's drag coefficient (Cd) and improve its gas mileage at highway speeds. Also, having lived in Germany, I was familiar with many of the ultra-low Cd cars designed in Germany during the 1930's.

Since it didn't look like the car companies were planning to do anything in the foreseeable future about introducing a small car that would get good fuel economy on the highway, I decided to see what I could do towards improving my existing car's gas mileage.

Research & construction

1930's aerodynamic test car First, I studied the 1930's German cars and found one whose shape roughly matched my own car's. This car was a streamlined 1939 Maybach designed for The Fulda Tire Company for high speed tire testing on the autobahn and could cruise at over 150 mph with a 150 hp engine. I also researched some of the more recent low Cd concept cars that used recently developed aerodynamic techniques to clean up the airflow around the wheels.

Initially I built the aero mods in aluminum bar, Coroplast, and clear vinyl and then as they proved themselves, rebuilt them in the stronger and more permanent aluminum monocoque and Lexan, using construction techniques common on homebuilt aircraft. Since I was building this car for use as a commuter, not a show car, or as a "no holds barred" extreme high mileage vehicle, everything I did to the car had to pay for itself in fuel savings within two year's time. Since it was a 15 year old car with over 350,000 miles (563,270 km) on the odometer at the time that I started this project, I had no concerns with resale values.

The end result is a car with such low aerodynamic drag that it is down in concept car territory and well below the 0.25 Cd (coefficient of drag) of a Toyota Prius (3rd generation).

Coastdown testing to calculate Cd

The results of coast down testing are linear out to 90 mph / 145 km/h (it coasts almost as well at 80 mph / 129 km/h as it does at 50 mph / 80 km/h) and the Cd tested out to be 0.17.

What fuel economy does it get?

The approximate mileage on a level road burning non-ethanol gasoline at 85 degrees F ambient (29.4 degrees C) is:

  • 95 mpg (US) at 65 mph
    (2.5 L/100 km at 105 km/h ... 40.4 km/L ... 114 mpg (Imp.))
  • 85 mpg (US) at 70 mph
    (2.8 L/100 km at 113 km/h ... 36.1 km/L ... 102.1 mpg (Imp.))
  • 65 mpg (US) at 80 mph
    (3.6 L/100 km at 129 km/h ... 27.6 km/L ... 78.1 mpg (Imp.))
  • 50 mpg (US) at 90 mph
    (4.7 L/100 km at 145 km/h ... 21.3 km/L ... 60.1 mpg (Imp.))

Using E10 (10% ethanol/gasoline blend) drops these numbers by about 5 mpg. It was averaging mileage in the low 70's until E10 was introduced and is now averaging high 60's (see current fuel economy log). The flip side of the improved mileage is the increased range and I have no problems getting over 800 miles (1,287 km) from my 11 US gallon (41.6 liters / 9.2 Imperial gallon) tank in the summer.

What's it like to drive?

I have to get above 90 mph before I start to feel any wind load and it has a calculated top speed of about 140 mph with its 102 hp engine (the OEM max speed was 95 mph). The wind load I now have at 80 mph is close to what I used to have at 60 mph. Wind noise is practically non-existent. It's a joy to drive on the highway since it doesn't feel any wind load at normal highway speeds and loses speed MUCH more gradually than a normal car when coasting.

Compared to a "normal" car...

This car coasts so well that when I switch from driving this car to a "normal" car, it feels as if I am driving on a road covered with molasses, and that, like a powerboat, you have to keep pouring on the power to maintain headway. By contrast, with this car on a level road it only takes a light touch on the accelerator to maintain speed and it takes only the slightests of downhills to maintain speed in a coast. Even a Prius now feels "draggy" at highway speeds compared to this car.

Needless to say, the car gets plenty of strange looks out on the highway and one of my biggest problem while driving out on the highway are the rubberneckers cueing up to stare and take pictures.

Aero observations: bugs, leaves & deer

A fringe benefit of the aeromods are that the bugs in the summer and salt spray in the winter pass over my car without impacting. So I don't have to clean dried bugs or road salt from my windshield and rarely need to wash the car to remove the dirt and salt that accumulate on the surfaces of most cars.

When driving through snow, the snow flakes ahead of the car smoothly lift, pass over the top of the car, and continue their fall undisturbed, with no zone of turbulence such as you see behind "normal" cars. The air also moves smoothly under the car so leaves and other debris on the road move only slightly as I pass over them.

Another fringe benefit is protection from damage when encountering deer on the road, the low sloped front of the car scoops them up and over the top of the car with minimal damage to both deer and car.

The aero modifications in detail

Boat tail

Aerocivic boat tail The biggest one, both in strange looks received and on its effect in improving my gas mileage is the boat tail. This is the tapered back end of my car that resembles the back of an aircraft fuselage. This eliminates the recirculating, low-pressure eddy that forms behind "normal" cars and that act to slow them down. This eddy is also responsible for the dirt that accumulates on a car's backside and allows a closely following car to improve its mileage by drafting. As a result of my boat tail, the back end of my car remains clean and anybody drafting me would gain no mileage benefits.

Expanded storage

Aerocivic expanded storage I took advantage when installing the boat tail of extending the interior of my car into the boat tail, so I now have an additional two and half feet of cargo space behind the back seat. The rear glazing still functions as a hatch for access to cargo. The boat tail also provides an additional three feet of crush space in the event I am rear ended and proved itself when I was rear ended by a high speed car. The tail lights are completely LED and the backup lights are two tractor work lights mounted in the underside of the boat tail.

Wheel/fender skirts

Aerocivic wheel skirtsThe next most visible mods are the wheel well covers. These streamline the sides of the car and as a fringe benefit, keep the sides of the car clean by eliminating the water spray that you see boiling out from the sides of most cars when driving on a wet road. The covers are hinged at the top for tire access and front covers are equipped with rollers that the sides of the tires push against to open it as needed when making a sharp turn. There is a spring at each lower corner that holds the cover closed when not making a turn.

Rounded nose

Aerocivic rounded noseThe rounded nose lowers my stagnation point to reduce the amount of air passing under the car. It also houses my adjustable grill inlet so I can adjust my cooling air drag to the amount actually needed to cool the engine. Most cars use a one-size-fits-all approach to grill inlet design with a grill opening sized for the worst case cooling scenario. Since the underside of the engine compartment is paneled, I exhaust the radiator air out through the front wheel wells. The rounded nose starts the air moving smoothly up over the front of the hood and over the top of the car. It functions as a two mode bumper; acting as a scoop when I run into deer to redirect the collision energies upwards so the deer are propelled up and over the top of my car. But if I hit something heavier, it also provides about one foot of additional crush space as it crushes back to the car's original bumpers.

Undertray

Aerocivic undertrayThe car's underside is completely paneled so the wind can travel smoothly under the car. This is an area almost totally ignored on most cars (except on some exotic sports cars and luxury cars), since out of sight is out of mind. In addition to drag reduction, additional fringe benefits of the underbody paneling are a reduction in "road noise", much of which is actually generated by wind turbulence under the car, and a clean engine, since mud is no longer being splashed up from below.

"Catamaran" style flow management around wheels

Aerocivic catamaran flow managementThe wheels have been integrated into an airflow management system that splits the wind to either side of the front wheels, then keeps this divided flow moving smoothly down past the rear wheels where a wheel boat tail allows it to rejoin behind the car. This keeps the air moving linearly under the car with minimum turbulence and greatly reduces the amount of water spray, road salt, or dust kicked up behind my car.

Side mirrors

Aerocivic mirrorBoth rear view mirrors on the side of the car have been moved inside the glass to eliminate their contribution to drag and wind noise.


Wipers deflector

Aerocivic wipers deflector There is a small wind deflector in front of the windshield wipers to get them out of the wind flow.



Sealed panel gaps

Aerocivic panel gapAll of the small gaps in the body around the doors and between various panels have been filled in to cut their slight contribution to wind drag.

Cost

So now, for a total materials cost of $400, I've created a car that blows away the highway mileage of any car currently in production. I wish I could buy a car with as low drag is this one, and even though the car companies are starting to come out with higher mileage models, they still have a ways to go match the low drag and highway mileage of mine.

Aerocivic media coverage & links

Other aeromodded vehicles:

Contact: Mike Turner ... mkturner7 [@] aol d-o-t com

Wednesday, November 5, 2008

Air Pods

from http://blog.wired.com/cars/2008/11/passing-gaswill.html

Eco-Friendly AirPods Get Airport Test

By Jason Sattler EmailNovember 05, 2008 | 8:16:29 PMCategories: Alt Fuel

Airpod

A former aeronautics and Formula 1 engineer with the seemingly crazy idea of building cars that run on compressed air has convinced a European airline to use his "AirPods" to ferry passengers around airports in France and Amsterdam.

Guy Nègre has been tinkering with compressed air vehicles for about 20 years, but he and his company, Motor Development International, have done little more than build some prototypes that have garnered interest from the likes of India's giant automaker Tata Motors and an American startup called Zero Emissions Motors.

With Air France/KLM officials announcing they will give the vehicles a six-month test in the rough-and-tumble environment of two busy airports, Nègre may finally prove his vehicles are more than hot air.

The airline says AirPods will carry passengers between departure gates at Charles De Gaulle Airport in Paris and Schiphol Airport in Amsterdam. The AirPods slated for airport duty will be the first operational version of MDI’s Air Car concept, which is vying for the Progressive Automotive X-Prize.

The AirPod carries four people in a vehicle that is about 6 feet long and weighs roughly 450 pounds. It's single-piston engine is driven by compressed air. The tank holds 175 liters of compressed air, according to Zero Pollution Motors, and can be filled to 350 bar (5,076 psi!) in as little as 90 seconds. That's enough to give the AirPod a range of about 135 miles and a top speed of 43 mph.

MDI won't be building Air Cars. Rather, it's counting on licensing agreements with Tata and Zero Emissions Motors to bring the world Air Cars by 2010 or 2011. If the idea of a zero-emissions car that runs on air sounds too good to be true, we share your skepticism.

Besides the continuing production delays, a promised top speed of 90 MPH and range of 848 miles for the AirFlow model seem—to put it mildly—over promise. Tata isn't convinced the technology is quite ready for prime time, and Andrew Frank, a professor of mechanical engineering at the University of California at Davis, told The New York Times, “It's a losing game because the efficiency is just not there.”

Everything about the Air Car seems to suggest an “It’s a Small World”-sort of innocence. MDI's industrial model for “micro production” imagines incredibly green cars being produced all over the world at fractions of typical costs. But none of the technology has ever been proven, which is why the tests of the AirPod at Schiphol and de Gaulle airports are so important. Yet even the limited scope of the AirPod’s test run at two airports seems to speak to a major lag in a technology that may fill little more than a tiny niche.

A car that runs on air is a cool idea in theory. But as the battle to replace gas heats up, it looks the AirCar could be little more than vaporware.

Photo by MDI.

Sunday, October 26, 2008

Insecta Car Concept

From http://blog.wired.com/cars/2008/10/ah-grasshopper.html

Insecta Concept Car Trades 6 Legs for 4 Wheels

By Keith Barry EmailOctober 23, 2008 | 5:11:08 PMCategories: Concept Cars

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Award-winning young designer Shao Yung Yeh drew inspiration from one of nature's smallest creatures when he designed the Insecta, a vehicle that is small and green like a grasshopper but has the brains of a much more advanced species.

The size, shape and color of the battery-powered personal vehicle reflects the characteristics of its namesake. Insects "not only inspire the styling but also the entire structure and the package of the car," Yeh told Wired.com. "The legs are connected to a central chassis as a thorax, while the canopy can be read as an insect's head. The battery pack at the back symbolizes abdomen."

Auto designers have long drawn inspiration from nature, and Jaguar founder Sir William Lyons famously said the automobile is "the closest thing we can create to something that is alive." But more often than not it is charismatic megafauna — particularly big cats — or birds that designers look to. That's changing, Yeh says, and the future belongs to insects. "They are lightweight, agile, versatile, efficient and ecological beings," he said. "Compare that to mammals, a common inspiration of modern car design. Insects are more suitable for cars of the future generation."

This automotive arthropod just might be the solution to millions of lone drivers buzzing around in five-passenger cars.

Yeh is a 22-year-old designer who studied industrial design at Cheng Kung University in Taiwan. The technology he envisions for Insecta is as advanced as its styling. The battery pack shifts according to the car's direction to maintain balance and handling. It uses hub-mounted wheel motors. And the adjustable suspension is one part bug-leg, two parts Citroën, changing the height of the car to suit traffic conditions.

Yeh doesn't see someone like General Motors or Toyota building the car of the future in the future. "I think there would be more and more independent companies building unique electric cars," he said. "They will be looking for innovative design languages and building up their own brand identities."

The way he sees it, the Insecta can be a unique brand identity that attracts buyers who value individuality as well as low environmental impact — and an emotional attachment to their vehicle. "Cars are always considered not mere products but also have life in some level, even like our pets," he said. "In fact, a lot of kids in Asia are having insects like big beetles as pets. Maybe when they grow up and see some cars like Insecta, they might feel intimate with them. It is important to look for new design elements to appeal to upcoming customer generations."

Post updated 6:20 p.m. PST.

More pictures and video, courtesy of Yeh via Car Body Design:

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