First Look: 2011 Duramax Diesel V-8 Engine

Discussion in 'Diesel powered automobiles' started by seftonm, Aug 13, 2009.

  1. seftonm

    seftonm Veteran Staff Member

    [​IMG] Among its new features, the next generation Duramax diesel will support up to B20 biodiesel and will use a urea solution for NOx reduction.

    [FIMG=RIGHT][/FIMG]Mike Levine - PICKUPTRUCKS - August 12, 2009

    The new Duramax is cleaner than ever, but still has way more power than most drivers will ever need --Ed.

    We’ve shown you spy photos and shared what our sources have told us, but now GM has pulled back more of the veil surrounding its next-generation heavy-duty Duramax diesel V-8 engine program. The illumination happened during a future product briefing at GM’s Milford Proving Grounds.

    Why the need for a new round of updates to the Duramax just three years after the current engines arrived? Come Jan. 1, 2010, all new diesel-powered vehicles will have to meet tougher federal diesel emission standards that will reduce allowable nitrogen oxide levels by 90 percent from today, 96 percent from 1994 levels.

    NOx is a major air pollutant that contributes to smog, asthma, and respiratory and heart diseases. It's a byproduct of diesel’s high combustion temperatures.

    The new Duramax diesel engines are built to meet new clean-air regulations, plus they feature other key improvements in technology and capability. Like today’s Duramax, the Isuzu-GM joint venture engine will continue to be available in two versions.

    “The new Duramax diesels are based on the same engines that have been around since 2001,” said Gary Arvan, a GM diesel powertrain engineering chief. “The 2500 and 3500 Chevrolet Silverado and GMC Sierra HD pickups receive the high-power LML motor [replacing the 2007-10 LMM], while the 2500 and 3500 heavy-duty vans receive the lower-rated LGH engine [also replacing the LMM]. Both have iron blocks, aluminum cylinder heads, and their [6.6-liter] bore and stroke are unchanged.”... [RM][/RM]

Share This Page