GM PUMA Concept, 2009

 

•  GM PUMA Concept, 2009

Dubbed Project P.U.M.A. (Personal Urban Mobility and Accessibility), GM and Segway are developing an electrically powered, two-seat prototype vehicle that has only two wheels. It could allow people to travel around cities more quickly, safely, quietly and cleanly - and at a lower total cost. The vehicle also enables design creativity, fashion, fun and social networking.

GM and Segway announced their collaboration, while demonstrating the Project P.U.M.A. prototype in New York City.

Trends indicate that urbanization is growing, and with that comes increased congestion and more competition for parking. Cities around the world are actively looking for solutions to alleviate congestion and pollution. Project P.U.M.A. addresses those concerns. It combines several technologies demonstrated by GM and Segway, including electric drive and batteries; dynamic stabilization (two-wheel balancing); all-electronic acceleration, steering and braking; vehicle-to-vehicle communications; and autonomous driving and parking. Those technologies integrate in Project P.U.M.A. to increase mobility freedom, while also enabling energy efficiency, zero emissions, enhanced safety, seamless connectivity and reduced congestion in cities.

Project P.U.M.A. vehicles will also allow designers to create new fashion trends for cars, and to focus on the passion and emotion that people express through their vehicles while creating solutions that anticipate the future needs of urban customers.

The Project P.U.M.A. prototype vehicle integrates a lithium-ion battery, digital smart energy management, two-wheel balancing, dual electric wheel motors, and a dockable user interface that allows off-board connectivity. The result is an advanced and functional concept that demonstrates the capabilities of technology that exists today.

Built to carry two or more passengers, it can travel at speeds up to 35 miles per hour (56 kph), with a range up to 35 miles (56 km) between recharges.

Since the introduction of the Segway Personal Transporter (PT), Segway has established itself as the leader in the small electric vehicle space. Its approach to congestion and environmental challenges is balanced with a strong understanding of the functional needs of its customers, enabling them to do more with less. Segway has delivered more than 60,000 lithium-ion batteries to the market.

GM has been a leader in "connected vehicle" technologies since it introduced OnStar in 1996. Today, this on-board communications package connects six million subscribers in North America to OnStar safety and security services. GM has also pioneered vehicle-to-vehicle (V2V) communications systems and transponder technology. These and additional connected vehicle technologies could ultimately enable vehicles that don't crash and drive themselves.

"Imagine moving about cities in a vehicle fashioned to your taste, that's fun to drive and ride in, that safely takes you where you want to go, and "connects" you to friends and family, while using clean, renewable energy, producing zero vehicle tailpipe emissions, and without the stress of traffic jams," said Burns. "And imagine doing this for one-fourth to one-third the cost of what you pay to own and operate today's automobile. This is what Project P.U.M.A. is capable of delivering."

GM HydroGen4 Concept, 2008

GM HydroGen4 Concept, 2008

With GM HydroGen4 the goal of achieving sustainable mobility with zero emissions came a step closer when GM announced the European part of its biggest ever test programme for fuel cell vehicles.

Nine companies will be the first to operate GM's HydroGen4 zero-emission vehicles in the Berlin area as they go about their day-to-day business: ADAC, Allianz, Coca Cola, Hilton, Linde, Schindler, Axel Springer, Total and Veolia. This real-world road test will run under the umbrella of the Clean Energy Partnership (CEP), a German Federal Department for Transport, Building and Urban Development funded project focused on proving the day-to-day suitability of hydrogen as a fuel for road transport.

GM HydroGen4 on the Road
As an integral part of GM's overall advanced technology strategy towards further electrification of the car, this fourth generation fuel cell vehicle is the culmination of more than 10 years development work with hydrogen and fuel cell technology. The HydroGen4 features improvements in everyday usability, such as performance and durability. Globally, GM deploys more than 100 vehicles of this type in its Project Driveway testing programme in the U.S., Japan, Korea, China, and Germany. In the U.S., more than 100,000 people have applied as mainstream drivers for the market test. To date, 3,400 people have driven the vehicles and 30 families have used the vehicle on a daily basis over a period of around three months. In total, the vehicles were driven almost 435,000 miles. Feedback from these demonstration activities not only gives GM engineers essential validation data, but also provides a valuable insight into the likely ownership and driving experience of future customers.

The vehicles are equipped with a wireless data transfer system that assists engineers by uploading vehicle performance data to a company server. Maintenance of the vehicles deployed in Berlin will be done at a regular Opel dealer equipped with the personnel and tools necessary for servicing fuel cell vehicles.

HydroGen4's fuel cell stack uses 440 single cells which combine hydrogen and oxygen from the air to produce electricity, with water vapour as the only by-product, and therefore zero emissions. The fuel cell stack provides the electric energy for the 73kW-synchronous electric motor, delivering acceleration of 0-62mph in around 12 seconds and a top speed of 100mph.

The electric motor's instant torque characteristics also give the vehicle an excellent pick-up from low speed. The GM HydroGen4 is fitted with a 1.8 kWh buffer battery to store energy from the vehicle's regenerative braking system and cover peak electrical loads. The three carbon-fibre composite tanks hold 4.2 kg of hydrogen at a pressure of 700 bars, sufficient for an operating range of up to 320 kilometres.

GM HydroGen4 can start and run in sub-zero temperatures, a considerable advance over the previous generation technology and an important benefit for everyday usability. It is designed to be as safe as conventional vehicles and includes unique hydrogen safety features in each of its major systems.

GM Sequel Concept

GM Sequel Concept

The Sequel is a hydrogen fuel cell-powered concept car and sport utility vehicle from General Motors, employing latest generation HydroGen3 technology developed by Opel.

The Sequel uses a drive-by-wire system. It has a range of three hundred miles, and its only emission is water. It debuted at the 2005 North American International Auto Show and is now being shown at the 75th international car show in Geneva, Switzerland. GM chief and chief executive Rick Wagoner suggested it will be over a decade before it goes into production.


This vehicle can accelerate from 0-60 mph in less than ten seconds. Additionally, it provides a high level of control on bumpy terrain, snow, and ice. 42 percent more torque and quicker deceleration when braking are additional benefits of some of the new technologies used in the Sequel.