Electrically Powered Maneuverable Public Transportation With High Capacity

Electric and hybrid vehicles will be conquering the cities: cars, bicycles, buses and trains. This is why new ideas are in demand for individual and public transportation. In “Fraunhofer’s System Research for Electromobility” researchers are coming up with solutions for tomorrow’s mobility.

The AutoTram® is as long as a streetcar and as maneuverable as a bus. It doesn’t need rails or overhead lines because the “BusBahn” rolls on rubber tires and simply follows white lines on the street. Another plus is the fact that people waiting at stops will not have to smell exhaust fumes in the future when a bus stops and starts again because tomorrow’s means of transport will be using electricity, hydrogen or a combination of various regenerative drives.

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UTC Hydrogen Fuel Cell Sets Performance Record on Oakland AC Transit Hybrid Electric Bus

A UTC Power PureMotion 120 System hydrogen fuel cell in an Alameda-Contra Costa Transit (AC Transit) hybrid electric bus has set a performance record by running more than 10,000 hours on its original cell stack, the Hartford, Ct.-based manufacturer announced recently.

More than 50% efficient, around double that of diesel-powered buses, the proton exchange membrane (PEM) fuel cell is powered by hydrogen that isn’t produced from natural gas. As a result, AC Transit’s hydrogen fuel cell-powered hybrid electric buses emit nothing but water vapor. They produce zero greenhouse gas emissions and no particulates.

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Europe 'falling behind' in green investment race

Electric vehicles, zero emission motorbikes and even innovative bicycles tend to hog the ‘green’ limelight. But, buses with their much higher passenger carrying capacity, have the potential to contribute to a greater degree of sustainable efficiency. The green approach can even be holistic, because of their(buses) status as a definitive component of public transportation. Taking all of these into account, industrial designer Francesc Gasch has conjured up the hybrid powered B2us, which is a low emission public bus, proposed for the renowned city of Barcelona.

Hybrid bus for Barcelona by Francesc Gasch

 

The concept form exhibits a clean, uncluttered linearity combined with smooth curves at the corners. The simplistic color combination of black, red and white also is easy on the eyes, even as the efficient features on the inside of the bus is what really stands out. The transmission will be hybrid, with part of it being guided by clean solar power. The solar panels are installed on the top roof. The advanced suspension would be based on magnetic levitation (a method by which an object is suspended with support from magnetic fields).

All said, the most striking attribute of the B2us will be its utilization of OLED (Organic LED) technology. The element of novelty will become much more apparent, as the side facades would display information (on the inside) regarding location of the bus and seat availability. According to the designer, the OLED panels will allow imaging of complex surfaces with significant efficaciousness. So at the end of the day, we will have an aesthetically simple, eco friendly bus that accentuates the sustainable facet of public transportation as well as that of the overall city.

Source: ecofriend
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Electric Buses that Charge at Each Stop

Proterra has received $30 million USD in new funding, including $6 million from GM Ventures to provide short range electric buses to businesses.

Proterra developed a way to make shorter range electric bus travel feasible. The worst problem that electric vehicles have is the cost of their battery packs/banks. They are so expensive that they alone elevate the cost of electric vehicles far above that of gasoline models, and short range models are cheaper but their range is too short. Therefore, manufacturers of these vehicles either have to back them up with onboard generators which supply power to the motor or charge the batteries, or they choose the more expensive option and use large battery packs which store plenty of energy.

Proterra is capitalizing on the fact that the lithium titanate batteries powering their buses can be charged in 10 minutes, and therefore can be charged at each bus stop that has a charger setup. The distance between bus stops is normally short, making it possible to use very short range batteries and keep recharging them frequently.

Short range buses are more efficient than long range models because they are lighter due to fewer batteries. Two more advantages of such a setup are that fewer batteries cost less money, and reduce the price of the bus.

Proterra claims that the lithium titanate batteries they use to power these buses are able to handle frequent and fast charging all day, every day, unlike traditional lithium ion batteries which they say would break down after only a few years of that abuse.

Time will tell if this project is feasible and will reveal any flaws it may have. Real world testing is always necessary to fully ensure that it is practical.

 

Source: cleantechnica
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(Credit: Proterra)

General Motors isn’t in the business of city buses, but an investment announced today in electric bus maker Proterra opens up the possibility

Proterra said that GM Ventures and venture capital company Kleiner, Perkins, Caufield & Byers have put $30 million into the Golden, Colo.-based start-up. Kleiner, Perkins led the round, which also brought money from Japanese industrial conglomerate Mitsui, Vision Ridge Partners, and 88 Green Ventures.

 

(Credit: Proterra)

 

 

The investment will allow Proterra to further develop and market its all-electric bus, which the company has designed as a replacement for typical diesel municipal transit buses. The buses are already in service in Los Angeles County and the company has two other customers, according to president Jeff Granato.

Within the next two years, Granato predicts that the company will be able to bring the cost of Proterra’s electric bus in line with the cost of a diesel-hybrid bus. The fueling and maintenance costs of electric buses are already lower than traditional buses, he added. Mileage is the equivalent to getting 24 miles per gallon on diesel.

One unusual feature of the bus is that it’s able to recharge its batteries in 10 minutes using an onboard rapid recharge system. The company says that its composite material buses are 20 percent to 40 percent lighter than conventional steel or aluminum buses.

The investment will allow the company to meet federal testing and roll out more buses for pilot electric bus programs. The company has manufacturing in Greenville, S.C.

GM created a venture capital arm, GM Ventures, last year to invest in start-up in different technology area, including clean tech, in-car information and entertainment, and lightweight materials to improve efficiency, said GM Ventures President John Lauckner. Its investment in Proterra signals its interest in urban mobility, he said.

GM doesn’t sell municipal buses and does not have a commercial agreement, but the investment gives GM an “option,” Lauckner said.

 

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