Air/fuel control key to engine performance: Continental Controls' products combine to increase output, fuel efficiency while holding the line on exhaust emissions

Diesel Progress North American Edition,  May, 2005  by Mike Mercer

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"We continue to operate under EPA restrictions for N[O.sub.x] and CO. We could meet these restrictions before--but only at reduced loads--and we are meeting them now with the switch to CCC products."

There are seven more Enterprise engines to be converted, according to Blumert. ConocoPhilips Pipe Line has also carried out conversions of three Waukesha 7042 engines located at its Junction pumping station. These V12-cylinder, naturally aspirated, natural gas fueled engines are rated 11,505 hp at 1200 rpm and like Coalinga are also fueled by utility supplied gas. The Waukesha engines drive three-stage pumps through Lufkin gearboxes.

These engines use a single VM-350 venturi, single ECV5 control and single [O.sub.2] feedback system for each cylinder bank of the V12 engines. The air filters were also upgraded to Spitzer dry panel units.

"Although these engines did not have a detonation problem, we upgraded them for similar reasons," said Blumert. "With the Continental Controls' systems, we were able to eliminate the carburetors to get more useable horsepower out of the engines in the summer heat. That was the main reason. However, it is also good from a consistency standpoint for service."

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