New TDI Clean Diesels for 2015 Golf, Jetta, Passat and Beetle

And yet the diesel market is growing rapidly in America, spurred on by models offered by VW, Audi and Chevrolet, to name just the bigger players. Soon, Volkswagen of America will also benefit from an invaluable tool in the fight against the MPGs, the latest EA288 clean diesel mills. The company has just announced availability of improved diesels for the 2015 Golf, Beetle, Beetle Convertible, Passat, and Jetta, all of which will be available in the second half of 2014.

More specifically, a 2.0-liter TDI featuring turbocharged, a common-rail ramp and direct-injection will be launched, making 150 hp and 238 lb-ft (320 Nm) of torque. Of the models mentioned, only the Golf is a brand new car for 2015, having started production recently at a new factory in Mexico.

Here are the major changes that have been introduced in order to deliver up to 30 percent better fuel economy and 12-30 percent lower carbon dioxide emissions than comparable gasoline engines:

• use of a complex exhaust gas recirculation system
• integration of the intercooler with the intake manifold, which also improves throttle response
• packaging the exhaust after-treatment components close to the engine
• low-friction bearings for the camshaft and balancer shafts
• piston rings that have less pre-tension
• the oil pump is a two-stage device with volumetric flow regulation