The ULEV II Diesel Focus cuts the amount of oxides of nitrogen from the car by spraying urea into the exhaust before it goes into the catalytic converter. The prototype powertrain also uses a particulate trap in the exhaust system to cut down on soot particles.
Ford will build several copies of the vehicle for testing, said Dick Baker, corporate technical specialist for Ford’s Advanced Diesel Systems Group. It has not decided on production plans. Ford says the car meets 2007 California standards that are 90 percent lower than current standards.