It's a battle between fuel economy and power expectations versus
emissions control. Particulate matter control will win out since it is
being driven by Euro emissions regulations. The above article relates to
California emissions regs and they focus much more on *NOx*. Good luck
retaining fuel economy and power whilst minimising NOx in a diesel
engine. The very nature of the diesel engine makes it a herculean task.
--
Xeno
Nothing astonishes Noddy so much as common sense and plain dealing.
(with apologies to Ralph Waldo Emerson)