DaimlerChrysler AG’s BLUETEC diesel engine, introduced by Mercedes Car Group division and currently used by the 2007 Mercedes-Benz E320 luxury sedan, is dubbed as world’s cleanest diesel engine. The engine offers environmental-friendly features that use a technology that reduces the nitrogen oxide (NO2) emissions by 80%.

So how does this BLUTEC clean diesel engine work?

Well, the 3.0-liter BLUETEC turbo diesel engine of the 2007 Mercedes-Benz E320 is equipped with fuel injector located at the center of the top of the combustion chamber. The BLUETEC engine technology uses an oxidizing catalytic converter and an advanced catalytic converter that begins a preliminary removal of oxides of nitrogen. Then a particulate filter will trap and store smoke particles burn them when the filter gets full. Selective Catalytic Reduction (SCR) catalytic converter will take the remaining nitrogen oxides and covert them to nitrogen and water with the injection of a urea-based fluid called Adblue into the exhaust stream to help in the process. With this system, the emission of the pollutant nitrogen oxide is reduced to hydrogen and water.

The 3.0-liter BLUETEC turbo diesel engine is also included in the Ward's 10 Best Engines for the year 2007.

Meanwhile, try to get quality auto parts for replacement like Mercedes parts at your trusted aftermarket stores online.

Cummins Inc., manufacturer of power generation equipments and power systems has recently launched the company’s strongest, cleanest, quietest, and best-in-class 2007 Cummins Turbo Diesel engine, according to the company.

Cummins has increased the horsepower and torque output of the poplar 6.7-liter Turbo Diesel engine that is exclusively installed in the Dodge Ram 2500 and 3500 Heavy Duty pickup trucks as a standard powertrain parts. Not only Cummins improved the power output for the engine, the company also revamped the engine enabling it to achieve the lowest emissions for the advanced 2010 Environmental Protection Agency (EPA) NOx (nitrous oxide) emission standard.

“The application of the right technology on the Dodge Ram is an extension of the joint clean diesel development work Cummins and DaimlerChrysler have performed together for nearly two decades.” said Cummins President and Chief Operating Officer Joe Loughrey.

“The new best-in-class Cummins Turbo Diesel and the Dodge Ram will provide the strongest, cleanest, quietest solution for heavy-duty pickup truck customers,” he added.

Although the torque and horsepower output of the new Cummins Turbo Diesel engine has been increased, Cummins said the engine still achieves 50% noise reduction, thanks to its reduced combustion noise, a low-noise VGT, and optimized fuel timing, . To achieve the lowest emissions for the 2010 Environmental Protection Agency (EPA) NOx standard, Cummins used different technological methods such as:

- Combining advanced in-cylinder technologies, including a Bosch flexible 1800-bar High Pressure Common Rail fuel system with Cummins next-generation cooled Exhaust Gas Recirculation (EGR) and Variable Geometry Turbocharger (VGT™)

- Advanced exhaust aftertreatment technology system that includes a close-coupled diesel oxidation catalyst, a NOx adsorber catalyst and a combined diesel oxidation/particulate filter.

- Incorporating a proprietary closed crankcase ventilation (CCV) system to eliminate crankcase fumes and “driveway drips.”

Watch out for the new Cummins Turbo Diesel engine when it goes under the hood of Dodge Ram 2500 and 2500 heavy-duty pickup trucks.