Here is something you guys will enjoy reading,
it was posted in the VW TDI forum other diesels section.
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AUBURN HILLS – During Chrysler’s “What’s new” media preview last month, global product development chief Frank Klegon shook things up by announcing the auto maker is exploring a four-cylinder diesel for North America.
Klegon didn’t provide more details, dangling the question of whether Chrysler, in the midst of an ownership transition, will pull one vehicle from its stable of European diesels or look outside the box with an all-new engine.
The man with the answers is James Weidenbach, who manages diesel applications and power train platform engineering at Chrysler.
“There’s a clear recognition inside (Chrysler) of the importance of diesel in the U.S.,” he says. “We need to figure out a way to convince the American public of that alternative.” [snicker]
Weidenbach hinted that Chrysler in fact will look to Europe for a U.S. diesel.
“From a development side, it’s much easier to use an existing product than to engineer from scratch,” he says.
Chrysler’s overseas four cylinders include the 2.2liter on the PT Cruiser, and the 2.0L in the Sebring and Avenger. That 2.0L is built by Volkswagen, which will introduce a 50-state diesel 2.0L next year on its Jetta TDI and will not require aftertreatment fluid, such as urea, to meet emission standards. Chrysler’s European diesel lineup also includes the 300 Sedan and Touring 3.0L V6, Voyager and Grand Voyager (Town and Country) 2.8L four cylinder.
“It gives us a lot of flexibility,” Weidenbach says. “The offerings we have now give us the ability to go lots of different directions.”
Weidenbach has a good grounding in what Americans may want, or may not want, having shepherded the 2.8L, four-cylinder Jeep Liberty to market. The vehicle first went on sale 2005 and was discontinued in 2006. Rated at 160hp and 295 lb ft of torque, the common rail diesel compared with the 210hp and 235 lb ft on the 3.7L gasoline V-6 Liberty. At the time, some critics were disappointed the diesel Jeep did not have superior towing capacity to the gasoline equivalent’s 5,000 lb benchmark. Still, Weidenbach has no regrets about the Liberty CRD market or road performance.
“The Liberty sold three times more than we anticipated,” he says. “It was truly a test case.”
For now, Chrysler is returning to the upscale market with the 3.0-liter V6 diesel engine on the Jeep Grand Cherokee, priced at $38,475. Grand Cherokee, 3.0-liter common rail turbodiesel 215hp 376 lb ft torque with 7,400 lbs of towing capacity.
Weidenbach notes improvements in electronics are likely to yield the greatest engine efficiencies and refinement. He cites the example of pilot injection, which opens the fuel injection nozzle to allow a tiny amount of fuel before the main injection, in an effort to decrease engine knock.
“We’re metering down to a cubic millimeter of fuel,” he says. “That’s pretty good, but I think you need to get down to half a millimeter.”
