Nissan, Metrocab Work On 2018 London Zero-Emission-Taxi TargetNissan, Metrocab Work On 2018 London Zero-Emission-Taxi Target

Starting in 2018, all new taxis in London will need to be capable of running as zero-emission vehicles–a policy recently announced by Mayor Boris Johnson.
That’s quite a promise, and a significant engineering push will be needed to make it happen. But already, several manufacturers are working on taxis to help make the British capital a cleaner place.
Nissan e-NV200 Taxi for London
Currently, London’s streets are among the most polluted in Europe.
The evidence of the decades of soot thrown out from diesel taxis and buses can be seen on curbs and building facades around the city, but it’s the effect on residents that’s the bigger concern for most.
Diesel has been rightly chosen for its economy and durability in the past, but several factors are now arising to reduce its appeal.
To control emissions, diesel engines must now be fitted with expensive technology that pushes up the purchase price and in some cases, reduces the famed reliability–particulate filters, for example, can clog up and be rendered inoperable in typical low-speed city driving.
MORE: Nissan e-NV200 Electric London Taxi Revealed, Arrives 2015
The cost of diesel fuel has risen too, largely thanks to taxation, cutting its cost benefit over gasoline–and efficient gasoline vehicles are also catching up.
Nissan’s new NV200 London taxi, for example, is said to be 50 percent more fuel-efficient than today’s diesel taxis, with its 1.6-liter gasoline engine and continuously-variable transmission.
But even this won’t be enough to meet for the 2018 targets.
Nissan itself has already shown off the e-NV200 taxi. It may carry the same awkward nose job as its gasoline counterpart–designed to evoke traditional London black cabs–but its battery electric drivetrain cuts emissions down to zero.
Frazer-Nash Metrocab range-extended London taxi
A second entrant into the market is Ecotive Limited, working to produce Frazer-Nash’s Metrocab.
Here, a range-extended electric drivetrain has been chosen. The idea behind the setup is to ensure that cab drivers–many of whom live on the city’s outskirts, or even further afield–can drive into the city as normal, before switching to electric mode for the day’s work.
Under the hood is a tiny one-liter gasoline engine. There’s also a 12.2 kWh lithium-ion battery pack and a 3 kW on-board charger. Between electric power and the gasoline engine, claimed range is 350 miles.
Frazer-Nash reports blended fuel economy of 62 mpg, around three times that of the equivalent diesel cab, and 75 percent less CO2–less than 50 grams per kilometer, overall.
The benefit to London residents is clear, but the benefit to drivers is reduced running costs: between $50 and $66 a day, on average.
MORE: New Electric Taxi To Make London’s Black Cabs A Little Greener
Like the Nissan, it’s not pretty. But it does cover all the bases required for a London cab–including the famed turning circle, which must be 25 feet or less–and meets the Mayor’s zero-emissions requirements for 2018.
The Frazer-Nash taxis are already beginning trials in the city.
To ensure electric cabs have a place in London, there are already plans in place to erect more charging stations around the city, allowing cabbies to juice up as and when they need to.
Several other automakers, including Volkswagen, BYD and Mercedes-Benz, have hinted at offering plug-in London taxis over the past few years.
It’s a concept that makes a lot of sense. Electric taxis clean up some of the most frequently-used cars on the road–and reduce ownership costs for those who run them day-in, day-out.
Other cities, including New York, have had similar ideas. Will the electric-taxi revolution be as important as the electric-car revolution?
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