Posted by: Mark Polk | 2014

Gas Burning Diesel Engine Could Reduce Truck Emissions

Through the use of executive power, not Congress, President Obama recently ordered stringent fuel standards on heavy-duty trucks. The EPA and the Transportation Department are required to implement these new regulations by March 2015, so they are in place before the President leave office.

The goal with the increased fuel standards is to cut back on greenhouse gas pollution and meet his target of reducing carbon pollution, with or without Congress. The President said, “Improving gas mileage for these trucks is going to drive down our oil imports even further”, but truck manufacturers argue that stricter federal fuel standards will only increase the price of the vehicles.

On the cusp of the White House leveraging its authoriy to increase fuel efficiency in heavy-duty trucks researchers at Lund University in Sweden announced a modified diesel engine that runs on gasoline that could significantly reduce truck emissions. According to the Lund University engine lab the engine was developed to achieve the right amount of ignition delay; meaning a delay between fuel injection and combustion. During the ignition delay, the mixing that happens produces minimal amounts of soot and nitric oxide. In fact, it could mean a new generation of engines so clean they wouldn’t require catalytic converters.

Bengt Johansson, Professor of Combustion Engines at Lund University stated, “A reasonably efficient engine today would be in the range of 40-42%. We’re hoping to achieve 60% with this type of PPC combustion process.”

WATCH: How new engine type could improve fuel efficiency

Mark Polk

Auto Education 101 



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