Light-Weight Assembled Gears: A Green Design Solution for Passenger and Commercial Vehicles

摘要

Discussions on climate change have been posing automotive industry challenges, as carmakers have to meet tight emission standards from different countries. The European Commission established through Regulations 443/2009 and 510/2011 the goal of limiting average CO_2 emissions from new passenger cars to 130 grams-per-km by 2012 - a reduction of around 25% from 2006 levels (Ref. 1). This trend also exists in other countries - Brazil, for one - which through Regulations 418/2011 and 315/2002 set new emissions limits for CO (carbon monoxide), HC (hydrocarbon) and NO_x (nitricitrogen oxides) (Ref. 2). According to Steinberg (Ref. 3), the cost of reducing each gram of CO_2/km has already risen from $17.03 (?13) to $65.50 (?50) - before the 2020 target of 159 g of CO_2/km has even been reached.