Posts Tagged ‘automotive engineering’
Volvo is working on developing a new performance brand of vehicles. The brand, Polestar, has big plans to create a series of electric hybrid luxury and performance vehicles that will be completely stand-alone from Volvo. The first vehicle, the Polestar 1, will be revealed in the next couple of years as a performance two-door sedan that seats four. The Polestar 1 will be primarily an electric powered vehicle, however will also have a small internal combustion engine for extended range. The Polestar 1 will have about 600 horsepower, about 740 ft-lb of torque, and will be designed as a true driver’s car with many high-performance features and sports car styling. The 600 horsepower rating will come from a fully electric drivetrain that delivers power to the wheels with specialized torque vectoring technology that will allow the car to distribute wheel torque to individual wheels and reduce the likelihood of tire slippage during heavy acceleration. According to Polestar, the Polestar 1 will be the first car to incorporate specialized Ohlins electronically controlled suspension and the chassis will be super lightweight because it will be formed from sheets of carbon fiber.
Polestar and Volvo are taking aim at a new generation of mid-sized electric or hybrid vehicles that provide high-performance and low emissions. Other vehicles in this category are being developed by major brands, however Tesla may be the only true competitor to Polestar when the Polestar 1 comes out until other manufacturers join in the competition. Polestar is developing the Polestar 1 on scalable architecture which will allow their engineers to share similar chassis and design concepts between several different models of vehicle. Polestar has plans to eventually offer other electric hybrid vehicles in their lineup, including a sport utility vehicle dubbed the Polestar 3. Production of the Polestar 1 will commence in China in time for a mid-2019 release date.
-taken from www.sae.org
The National Highway Traffic Safety Administration (NHTSA) is helping the automotive industry develop a new technology to help make cars safer. The technology is termed vehicle to vehicle (V2V) communications and it is being developed to provide vehicles with close-range communication abilities. Vehicle sensors have been focused on helping drivers determine where their vehicle is in relation to the surrounding environment. Rear backup cameras, vehicle sonar, lane departure warnings, and active emergency braking are all systems that assist the driver in knowing where their vehicle is in relation to other object. V2V communications is intended to enhance the abilities of current safety sensors by sending and receiving vehicle information between vehicles as they travel down the roadway. How does it work? Wireless transmitters and receivers located in each vehicle work to communicate vehicle information between the onboard vehicle and surrounding vehicles. The wireless transmitters can transmit data on vehicle speed and heading, and can also sense position of the vehicle in relation to other vehicles with the same sensor setups. The wireless signals are designed to detect and analyze vehicle information from other vehicles that are located nearby, to a proximity distance of about 300 meters. For example, a vehicle following another vehicle on the same roadway would detect information about the front vehicle’s speed or whether or not the front vehicle had begun emergency braking, providing the driver of the following vehicle with either a brake assist, or a noticeable warning as to the behavior of the front vehicle.
The National Highway Traffic Safety Administration is expecting that the V2V systems will help increase vehicle safety and reduce the number of automobile crashes, however other uses for the system could be implemented as well. For example, detection of stolen vehicles could be sensed by vehicles surrounding the stolen vehicle. Information pertaining to the vehicle’s driver could also be shared between other vehicles. V2V communication will allow more vehicle and driver data to be collected which could benefit the entire transportation industry as a whole.
-taken from NHTSA.gov
A new technology developed for large semi trucks and other commercial vehicles shows great promise in increasing fuel economy. Semi tractor trailer vehicles, otherwise known as “Big Rigs” are the focus of a new cutting edge product that is being developed to help these large trucks reduce fuel consumption. The product uses plasma-emitting strips along the trailing edges of the big rig’s trailer to help eliminate aerodynamic drag present at the rear of the vehicle. Preliminary studies show that the plasma strips can reduce fuel consumption at highway speeds up to 10%, a significant savings considering there are over 133 million large trucks on the road that could benefit from this technology, and commercial vehicles consume over 60 billion gallons of fuel per year currently.
The plasma strips consist of two electric plates separated by an insulating material that are energized at a high voltage to produce an electric plasma, or fourth state of matter. The plasma works to reduce air turbulence by negatively charging particles in the air, thus reducing the amount of turbulence caused at sharp corners, such as the sharp corners on the edges of a big rig’s leading edges, or the back of a trailer. The company that is developing this technology, Plasma Stream Technologies, has dubbed the system eTail. Plasma Stream Technologies claims that the system is completely safe and has shown great promise in laboratory tests. Real-world testing of the eTail is scheduled to begin in the coming months. Plasma Stream Technologies anticipates that a sellable product will be available to the commercial market by 2018.
A retrofit device is expected to cost around $2000 and provide an average savings of over $8000 for big rigs that travel the roadways consistently. The eTail will be mountable on the rear edge of trailers without any additional modification. A huge benefit of the eTail over conventional aerodynamic aids such as boat-tails is that the eTail does not impede access to the rear doors of the trailers. The eTail will take up only a few inches of space around the rear of the trailer.
Read More: Society of Automotive Engineering Article
U.S. Transportation Secretary Anthony Foxx is eager to have all affected Takata-brand airbags replaced in passenger vehicles. “The Department of Transportation is maintaining its aggressive oversight of the efforts to recall Takata airbags as quickly as possible…” Foxx stated in a recent press conference. The NHTSA is actively overseeing the recall of the Takata airbags because the recall is so widespread and the affects of failing airbag units is so devastating. In fact, the recall is considered the largest safety recall ever for the automotive industry. The airbag recall potentially affects up to 69 million airbag inflators that are in place on approximately 42 million vehicles worldwide. (to find out if your vehicle has an affected airbag, please click on the following link: http://www.safercar.gov/rs/takata/takatalist.html)
Foxx stated that the NHTSA will be prioritizing the recall by recalling the highest risk vehicles first, then working down the list to the lowest risk vehicles on the massive list towards the end of the recall. This procedure is in an attempt to minimize the chances of personal injury or death due to the faulty airbags in the event that the airbag malfunctions. Historically speaking, there have been 11 reported deaths in the USA that are attributed to the Takata airbags malfunctioning. 184 people have been injured by the airbags. This information taken from: motor1