Entity

Time filter

Source Type

Detroit Electric was an electric car produced by the Anderson Electric Car Company in Detroit, Michigan. The company built 13,000 electric cars from 1907 to 1939. The Detroit Electric brand was revived again in 2008 to produce modern all-electric cars by Detroit Electric Holding Ltd. of the Netherlands. Wikipedia.


Tajer A.,Detroit Electric | Wang X.,Columbia University
IEEE Transactions on Information Theory | Year: 2012

This paper analyzes the gains of opportunistic communication in multiuser interference channels. Consider a fully connected n-user Gaussian interference channel. At each time instance, only K < n transmitters are allowed to be communicating with their respective receivers and the remaining (n-K) transmitter-receiver pairs remain inactive. For finite n , if the transmitters can acquire the instantaneous channel realizations and if all channel gains are bounded away from zero and infinity, the seminal results on interference alignment establish that for any K arbitrary active pairs the total number of spatial degrees of freedom per orthogonal time and frequency domain is {{K} \over {2}}. In dense networks (n → ∞), however, as the size of the network increases, it becomes less likely to sustain the bounding conditions on the channel gains. By exploiting this fact, we show that when n obeys certain scaling laws, by opportunistically and dynamically selecting the K active pairs at each time instance, the number of degrees of freedom can exceed {{K} \over {2}} and in fact can be made arbitrarily close to K. More specifically, for single-antenna transmitters and receivers, the network size scaling as n € \omega ({\ssr SNR}{d\lceil d-1\rceil}) when power allocation is allowed and scaling as n € \omega ({\ssr SNR}{d(K-1)}) without power allocation are sufficient conditions for achieving d € [1,K] degrees of freedom. Moreover, for achieving these degrees of freedom the transmitters do not require the knowledge of the instantaneous channel realizations. Hence, invoking opportunistic communication in the context of interference channels leads to achieving higher degrees of freedom that are not achievable otherwise.d € [1,K] with no knowledge of the channel gains at the transmitters side and d € ({{K} \over {2}},K] with the knowledge of the channel gains at the transmitters side. We extend the results for multi-antenna Gaussian interference channels. © 1963-2012 IEEE. Source


Patent
Detroit Electric | Date: 2015-03-31

A power switching unit for use with a power grid, a home power network, and a vehicle power network. A first power port is connectable to the power grid to receive power therefrom, a second power port is connectable to the vehicle power network, and a third power port is connectable with the home power network. A switch is in electrical communication with the first, second and third power ports, with the switch being transitional between first and second positions. In the first position, the switch places the first power port in electrical communication with the second and third power ports to enable the power grid to provide power to the vehicle power network and the home power network. In the second position, the switch places the second power port in electrical communication with the third power port, allowing the vehicle to provide power to the house power port.


News Article
Site: http://www.treehugger.com/feeds/category/cars/

Jay Leno appears to spend most of his free time tinkering with various cars, including electric ones. One of his recent projects has been the restoration and modding (or as he calls it, "restomodding") of a 1914 Detroit Electric EV. It was made by the Anderson Electric Car Company in Detroit, Michigan, back in the days when EVs had significant market share. "Production of the electric automobile, powered by a rechargeable lead acid battery, began in 1907. For an additional US$600, an Edison nickel-iron battery was available from 1911 to 1916. The cars were advertised as reliably getting 80 miles (130 km) between battery recharging, although in one test a Detroit Electric ran 211.3 miles (340.1 km) on a single charge. Top speed was only about 20 mph (32 km/h), but this was considered adequate for driving within city or town limits at the time." (source) Before you wonder why modern electric cars don't get much better range than a hundred years ago, you have to remember that this was basically a wood box with wheels and doesn't compare to modern cars when it comes to safety, comfort, or performance. But still, Detroit Electric did an impressive job, and these things certainly had style! There's an interesting philosophical aspect to Leno's restoration project: Much of the parts of the car were badly damaged, including pretty much all of the wood parts, and had to be replaced. It's a bit like the tale of the old ax that had the handle and the blade replaced a few times. Is it still the same ax? I think so. What matters is the pattern. To get more biological about it, the cells in our bodies don't live as long as we do, and so are all replaced over time. Yet we are still the same people. Anyway, here's Jay. The first segment is about the Detroit Electric, the rest is about other of his projects: Above is a Detroit Electric charging in 1919, and below is a 1916 model. Here's a Detroit Electric in action. It's so quiet, you can clearly hear the birds as it rolls away: Here's another one driving down the street:


Nearly 100 years ago, the Anderson Carriage Company produced and sold one of the most popular electric vehicles of the time: The Detroit Electric. With production peaking at 1,000-2,000 cars in 1910, the company eventually renamed itself after its popular model and sold nearly 13,000 electric vehicles during its 32 years of production. The company never recovered from depression, producing its last EV in 1939. Detroit Electric is back. Meet the first car to wear the historic nameplate in over 70 years: The SP:01. The brand was revived in 2008 by Albert Lam, former Group CEO of the Lotus Engineering Group and Executive Director of Lotus Cars of England. Now headquartered in Detroit’s historic Fisher building, the company is set to restart Detroit Electric starting with the SP:01 electric sports car. The SP:01 is just the first from the Detroit startup. More family friendly vehicles are in the works, with two new models in the pipeline for 2014. The company is also setting up its production shop somewhere in the Detroit area where it expects to have a yearly production capacity of 2,500 vehicles. This facility will create 180 new jobs. Detroit Electric only plans on making 999 examples of the SP:01. That’s well under the 2,400 Tesla Roadsters produced during its four-year run. With a starting price of $135,000, the SP:01 also has a starting cost higher than the Roadster. But at least it’s just as fast. Detroit Electric claims the SP:01 is the fastest pure-electric production car on the market. And that’s true since the Roadster is no longer available. It’s claimed, although yet verified, performance numbers puts the SP:01 on the same level as the limited edition Tesla Roadster Sport. Plus, with a claimed top speed of 155 mph and 0-62 mph time of 3.7 seconds, it’s quicker than just about every other car out of Detroit including the new Corvette Stingray. Propulsion is provided by an air-cooled, asynchronous AC motor powered by dual 37-kWh lithium-polymer batteries. The system is good for 201 horsepower and 166 pound-feet of torque — not bad for a car that weighs just 2,403 pounds. Strangely enough, unlike the dead-simple Tesla Roadster, the SP:01 features a four-speed manual transmission or an optional two-speed automatic. Since the electric engine is either on or off, there is no need to use the clutch when stopping or starting. Detroit Electric claims the SP:01 has a driving range of 180 miles based on the New European Driving Cycle, but as Autoblog notes, while the official calculations haven’t been released, that likely results in about 150 miles on a U.S. cycle. It’s no secret that the carbon-fiber shell comes from a Lotus Exige. Interestingly enough, the Tesla Roadster is based largely on the Lotus Elise platform. Per Detroit Electric’s press release, it takes 4.3 hours to fully charge the SP:01 from a 240 volt outlet with 32 amps. It takes 8 hours on a 13-amp sources. But like the Chevy Volt, the SP:01 can output its electrical charge, serving as a sort of $135k electric generator in a pinch. Here’s hoping that Detroit Electric finds the same level of success as its forebearer. The EV market is wide open for new players. Tesla, while Detroit Electric’s main competition, has a large head start but by no means a monopoly. Fisker is dead in the water, GM and Toyota are pursuing hybrids, and Nissan is seemingly content selling low-end electric vehicles. The SP:01 will hit the production lines this August. The price starts at $135,000.


News Article | March 20, 2013
Site: www.cnet.com

Storied-brand Detroit Electric is teasing an electric vehicle that will take on the Tesla. "After an absence of over 70 years, Detroit Electric...has returned to the legendary Motor City, promising job creation and a range of exciting 100% electric vehicles for the mass market," the company said in a press release. The first model will be "a limited-edition two-seat sports car," the company said. And it will be assembled in Michigan with production to start in August. "We are proud to become the fourth car manufacturer born out of Detroit," according to the statement. The vehicle hints of a design like the Lotus Elise-based Tesla Roadster. Which shouldn't be surprising, as the Detroit Electric brand was resurrected in 2008 by Albert Lam, who was formerly Group chief executive of the Lotus Engineering Group and is now Detroit Electric's chairman and Group CEO. The brand has a storied past. Detroit Electric was founded in 1907 and, ironically, the electric car industry was probably more vibrant then than it is today. "Early in the last century the electric vehicle industry was flourishing in Detroit...Detroit Electric was...selling more electric vehicles than any other company," according to the company. Detroit Electric made about 13,000 electric cars, which it describes an "electric vehicle production world record for the twentieth century." Notable customers at that time included Thomas Edison, Mamie Eisenhower, John D. Rockefeller Jr. and Clara Ford, the wife of Henry Ford. But don't expect to be able to run out a buy one unless you have well over a hundred thousand dollars burning a hole in your pocket. The car is expected to retail for about $135,000, according to reports, with 2,500 slated for annual production.

Discover hidden collaborations