Two new studies released this month paint a grim picture of the consequences of global warming. The papers published by scientists at the Universities of Colorado and Washington say that due to CO2 emissions, global temperature will likely increase more than 3.6°F by the end of the century, triggering a catastrophic rise in sea levels, super droughts, mass extinctions, and declining human health.
Like countless previous reports, the authors conclude that the international community must make major and ambitious changes in climate and energy policies that limit carbon emissions. One central theme that is emerging is the move to eliminate IC engines from vehicles.
Consider that the U.K. and France have announced they will ban diesel and gas cars and vans in 2040, to tackle air pollution and global warming. More aggressively, Norway will push to limit sales of all fossil-fuel based cars by 2025, by instituting penalties on conventional cars and offering incentives to embrace alternatives. Other nations like Belgium, Japan, the Netherlands and Switzerland are contemplating phaseouts or watching developments closely. In addition, Volvo announced in July it will only sell battery-powered or hybrid cars from 2019 onwards, in what the company called an “historic end” to building models that only have internal-combustion engines.
It’s not just cars in the crosshairs. Volvo Construction Equipment has been working on electromobility and hybrid technology since 1998 and says electrification of off-road equipment is the long-term trend. That could definitely impact fluid-power markets. Hydraulics has always been regarded as outperforming electrics in terms of power density and ruggedness. But anyone who thinks mobile hydraulics is immune to inroads by competing technologies is kidding himself.
Last year Volvo CE introduced its experimental LX1 electric-hybrid wheel loader with an electric drive, battery energy storage system and a relatively small diesel engine. At Conexpo in March it presented the HX2 autonomous, battery-electric hauler with no diesel engine whatsoever. Two electric wheel motors eliminate less-efficient hydrostatics and a third electric motor powers a hydraulic pump to handle steering and actuate the dump cylinders. These machines are part of an electric-site research project in Sweden that predicts up to a 95% reduction in carbon emissions and 25% lower total costs in a quarrying operation.
And this May, the company unveiled a fully electric compact EX2 excavator that delivers zero emissions. The prototype replaces a combustion engine with two lithium ion-batteries, which store enough electric energy to run the machine for eight hours in intense digging applications. Electromechanical linear actuators that supplant the hydraulics are said to offer significantly higher efficiency, while removing the hydraulics and engine reduces cooling needs and makes for quieter operation.
“Volvo CE is committed to pushing boundaries and exploring the technology of the future,” said Jenny Elfsberg, director of emerging technologies at Volvo CE. Using electricity instead of diesel to power construction equipment has the potential to significantly reduce fuel consumption, CO2 emissions, environmental impact and cost-per-ton, she said. “The electrification of construction equipment will produce cleaner, quieter and more efficient machines—this represents the future of our industry.”
William K. says
I can offer a bit of analysis on the rising of the ocean levels, but calculating the surface are of the worlds oceans is a daunting task. Start with the assumption that a cubic foot of ice melting will produce a cubic foot of water. Then calculate the cubic feet of ice in the poles, being careful to only count that portion above the present sea level. Next, divide that number of cubic feet by the number of square feet of ocean surface, ignoring wave height. The result will be a number that is less than one. So while it will probably be possible to measure the ocean’s rise, it will not be visible to most folks.
Next, consider that the earth has been warmer than now at least once. Consider that probably all of those dinosaurs were not living in cold climates, but rather in warm fertile jungles with lots of food growing. Could it have been a cold spell that killed them off?
So perhaps the increased carbon dioxide in the air will enhance crop growth and permit more of the population to be well fed. AND, just suppose, that cause and effect are not as assumed. What if global warming leads to increased atmospheric carbon dioxide.
Christian Morales says
All I can say is if we use electrical earth mover how long the charging hours of battery?
RG Group says
I’m glad for the introduction of more electric vehicles but I think we’ll see more CO2 emissions from melting of permafrost and the release of ground gases (due to global warming) than we ever could from mobile emission. What’re your thoughts?