CHICAGO – As heavy-duty engine builders continue to grapple with ways to cut diesel emissions, they are turning some of their attention from the tailpipe to another significant source of air pollution: the crankcase. Crankcase emissions once were vented directly to the atmosphere, but many engine manufacturers today use closed crankcase ventilation to redirect contaminants such as particulate matter, blow-by gases and oil aerosols back into the engines intake pipe assembly. Now, says Bengt Otterholm of Volvo Truck, they need added assurance that diesel engine oils are capable of controlling harmful deposits in these sensitive systems.
Speaking to a special meeting of ASTMs Heavy Duty Engine Oil Classification Panel here on March 31, Otterholm outlined a new initiative thats under way in Europe to develop a test to measure how well lubricants function under closed crankcase ventilation (CCV) conditions. As leader of the heavy-duty lubricant working group in ACEA, the trade association for European vehicle manufacturers, Otterholm explained that CCV technology will be essential to control these emissions, which will be regulated in Korea and Japan this year, the U.S. in 2007, and Europe in 2008.
Get alerts when new Sustainability Blog articles are available.