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All hail the eDumper, the largest EV in the world
The Swiss are cleaning up their act with a 45-tonne eco dumper truck
Dumper trucks. Who doesn’t love a dumper truck? We bet at some point you
spent your youth shuffling around atop Tonka Toys trying to mine precious
metals out of your back garden. Dumper trucks are lightning rods to your
inner toddler; they’re so big, so purposeful, so… dumpy. But they’re also
dirty beasts. Not just because they spend their lives slothing around filthy
quarries, but because they’re powered by gargantuan diesel engines. This
fantastically titled truck is here to change that latter point. Because it’s
electric.
Would you please be upstanding then, for the eDumper. What a name. What a
thing. It’s an electrified dumper mining truck from the Swiss division of
machinery manufacturer, Kuhn. Wanting to kick the diesel habit, it converted
a Komatsu HD 605-7 to run on electricity – making it the largest electric
vehicle in the world in the process.
这辆名为eDumper 的砂石车来自瑞士机械制造商Kuhn，为了摆脱柴油，它将
Komatsu HD 605-7 改装成电动的，这使得它成为世界上最大的电动车。
The Komatsu HD 605-7 (sounds a bit like a cut-price Korean television, doesn’
t it?) normally gets its load-lugging ability from a huge 23.1-litre
straight-six turbodiesel. But that was thrown in a big skip and replaced with
motors that draw electricity from a four-tonne, 600-kWh lithium-ion battery
pack – six times the capacity of Tesla’s Model X.
Komatsu HD 605-7 原先动力来源是一具23.1 L 直六涡轮增压柴油引擎，被更换
为一组4吨重、600 kWh 的锂电池组，其电量是Tesla Model X 的六倍。
Like many EVs, it also has regenerative braking, a crucial element when
crawling around mines. Being such a heavy lump and having such a heavy load
to carry, the eDumper can’t rely on some magical breakthrough in battery
technology. So it uses physics. Say the 45-tonne eDumper drives up a 13 per
cent incline to pick up 65 tonnes of materials to a cement factory. It’s so
heavy when it drives back down that its regenerative braking system generates
most or all of the energy used to go up the hill. Clever, eh? According to
its makers, the eDumper actually makes more energy than it consumes. And
using batteries as a source of power saves approximately 50,000 tonnes of
diesel annually.
就像许多电动车一样，它同样具有刹车回充，这是在矿场行驶的关键因素。沉重
的大块头车身与荷载，eDumper 不能指望电池技术的一些神奇突破来运作，因此，
它运用了物理学。假设这辆45吨重的eDumper 在incline 13 的斜坡为水泥厂提供
65吨重的原料，那它刹车回充系统可产生大部分或全部用于上山的能量。根据其
制造商的说法，eDumper 制造了比它消耗掉更多的能量。使用电池来做为动力每
年可省下5万吨柴油。
Could this be the future for heavy industry? Well, they’re all being rather
hushed about the development costs in comparison to an internal combustion
variant. But if it keeps future generations of kids shuffling around atop
Tonka Toys, we’re all for it.
来源：
https://www.topgear.com/car-news/electric/all-hail-edumper-largest-ev-world
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一般燃油砂石车运载原料下坡时大都是依靠刹车来减速，能量大都浪费掉转变成
热能，这辆eDumper 使用动能回收，刹车时回充电量，卸载完原料车辆变轻，回
收来的电量刚好用来空车上坡，在这种状况下几乎不需充电，大大减少燃油的使
用。之前他们也有接受CNN 的采访，其中有一段是这样说的：
We had 75 tons of rocks and we went out of here with 90%, went all
the way to the top," di Grassi told CNN Sport.
"We arrived with 80% battery, loaded up and on our way back, we
recovered 8% so we came back with 88%