Two non-contacting, claw-type rotors in an oil-free chamber provide the vacuum for the Busch MM Series (www.buschpump.com) dry vacuum pump. Busch engineers say it's for applications where dust particles are present. The non-contacting design means no wear in the pumping chamber, they say, so maintenance is low.
The implementation of a new diesel fuel standard in the US has considerably improved the environmental performance of diesel vehicles. The Environmental Protection Agency (EPA) says that the new ultra-low sulfur diesel (ULSD) fuel has combined with other improved technologies to reduce diesel's particulate matter (PM) emissions by 99%.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.