More Than A Number

Diesel has a reputation for being a much dirtier fuel than gasoline, but new technology is working to change that all the time. One example is improvements in filtration. Matthew L. Brown of the Worcester Business Journal recently reported on a Holliston, Massachusetts-based manufacturer of self-cleaning diesel exhaust particulate filters that is trying to help the state reduce its diesel particulate emissions. Rypos filters are actually made of metal wires and contain electronics that sense when the filters become dirty. Rather than using exhaust gas to clean the dirty filters, the Rypos system uses electrical currents, which are cleaner and more efficient.

Although Massachusetts follows EPA guidelines, it doesn’t regulate emissions as strictly as states like California. Rypos CEO Peter Bransfield is hoping to change that and clean up diesel applications large and small, from 18-wheel refrigerator trucks to the many diesel generators used for standby power at hospital facilities, government buildings, and industrial centers. The company’s focus right now is on getting the Massachusetts Bay Transportation Authority to use its filters on the 22 diesel generator sets at their stations.

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