From Ars Technica
Is there still a future for the diesel engine? According to Bosch, the answer is yes—this week the German company announced it had made a breakthrough by combining a number of existing technologies, which means that modern turbodiesel engines can still make good power and deliver excellent fuel efficiencies. At the same time, Bosch says this combo will emit very low levels of dangerous nitrogen oxides (NOx)—in fact, the company says it can beat future European emissions regulations by 90 percent.
Diesel is a dirty word
For a while, it looked like the turbodiesel engine was an easy way to boost fuel efficiency and cut carbon emissions without sacrificing power or torque. But its dirty secret was that the modern turbodiesels that gained so much marketshare in Europe and were starting to gain popularity here in the US came with some serious baggage. Although they appeared to satisfy EPA and European emissions regulations, it turned out that in many…