The diesel engine has undergone a significant evolution over the past two decades. Most of these changes were designed to reduce emissions and air pollution, but once early generation emission goals ...

Caterpillar will be a step closer to reaching the stringent ’02 federal emissions standards when it introduces Clean Power – engines it says offer lower NOx emissions than current EPA regulations ...

Investments in clean-burning combustion engines are picking up, as VCs bet that batteries and exotic fuels like hydrogen won’t be the end of the story for powering automobiles. The latest is Achates ...

Sophisticated electronic controls and fuel systems improve combustion efficiency and substantially cut emissions. Sophisticated electronic controls and fuel systems improve combustion efficiency and ...

TOCHIGI, Japan — Honda Motor Co. says it has developed the first diesel passenger car engine capable of meeting California’s tough 2009 air-quality standards, one that produces almost none of the ...

Just days after Ford’s announcement of a particle filter-equipped ‘Power Stroke’ diesel engine for large pickup trucks, GM Powertrain said its ‘Duramax’ 6.6L V-8 turbo-diesel engine has been updated – ...

Honda has announced it has developed a next-generation diesel engine that reduces exhaust gas emissions to a level equal to a gasoline engine. Honda’s next-generation diesel engine employs a ...