Tag Archives: RegenerativeBraking
Range Rover’s 2020 Evoque blends style with sustainability
easyJet’s hybrid plane design has a hydrogen fuel cell inside
Amtrak to roll out high-efficiency trains with regenerative braking (video)
Some of us look at electric trains as efficient transportation almost by definition, but that's not entirely true when they consume a lot of power and give little back. Amtrak is about to strike a better balance now that it's close to receiving the first of 70 high-efficiency Siemens ACS-64 trains destined for routes across DC, Massachusetts, New York and Pennsylvania. Each engine centers on a regenerative braking system that can recover up to 5MW of energy, much of which goes back to the power grid. The machinery is smarter, too: it can self-diagnose problems and mitigate the impact until repairs are possible. Commuters won't immediately notice the difference when ACS-64 trains reach the rails between this fall and 2016, but there should be important behind-the-scenes savings. Amtrak reckons that the new vehicles could lower energy consumption by 3 billion kilowatts in the long run, which might help both the company's bottom line and local utilities.
Filed under: Transportation
Source: Amtrak
Land Rover EV prototypes tread lightly uphill, recharge on the way down
Instant torque feels delicious on the highway, but it could be an even bigger asset in an offroader. Land Rover has been experimenting with electric versions of its Defender 110 for a while now, and claims its latest prototypes benefit from a reduction in wheel spin due to the single-speed motor, making them more adept at climbing and less likely to churn up the environment. The prototypes don't necessarily stand out in terms of raw specs: they're 25 percent heavier than turbodiesel models, with lower horsepower and torque ratings, and with a range of just 50 miles. They try to make up for it in other ways, however, with the ability to deliver up to eight hours of slow, grueling off-road time, where range is secondary to staying upright, and by exploiting Land Rover's Hill Descent Control feature for faster recharging through regenerative braking. There's no plan to bring an EV Defender to market any time soon, or to run the Dakar gauntlet like some rivals have, but the prototypes are due to make appearance at the Geneva Motor Show before being tested for painful-sounding "specialist applications" later in the year.
Filed under: Transportation