Nissan Titan Diesel Test Program Underway

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Nissan Titan Diesel Test Program Underway

Back in September, the US Department of Energy, in conjunction with Nissan Motor Co, green lighted a proposal to test a Cummins four-cylinder turbo-diesel in the full-size Titan pickup.

The program was largely conceived to help big trucks like the Titan achieve better fuel economy, in lieu of the 35.5 miles per gallon CAFE requirements (that now also include light trucks), scheduled to be phased in in 2015.

The test engine, a 2.8-liter unit cranks out 350 lb/ft of torque at 1800 rpm making it comparable with the Titan’s existing 5.6-liter V-8. However substantial gains in fuel economy have already been achieved, the diesel is said to currently allow a 2WD Titan to achieve around 28 miles per gallon, a sizeable improvement on the V-8 truck’s 13/18 mpg (city/highway).

Cummins says this new diesel can be built in either 2.8 and 3.5-liter forms and thanks to the use of high strength steel pistons, is not only a sturdy engine but also rather compact by diesel standards, not that compactness is of real concern when installing one in a Titan.

The test program is scheduled to run through September this year and it will be interesting to see what further results develop when it comes to capability and fuel economy. However, regulators are now proposing even tougher fuel economy standards for 2025, as much as 62 mpg. With such shifting targets, in such a short period time, the ability of any pickup truck manufacturer to meet them is going to prove challenging at best.

[Source: Automotive News]

  • hopefully nissan comes through, toyota was supposed to have had a diesel truck out on the market in ’10. 4wd shouldn’t get a whole lot less fuel economy…its all in the gearing any way

  • Picasso Ng

    Can’t wait.  I will put my money down today.  Funny thing is, people see a number of 220 hp, and say my f150 has 360HP and 380ft-lb torque… well funny thing, those gassers dont make that hp until about 5500 or that torque until well over 4200!!!  Who the hell wants to drive their truck like that!  I’m sure without seeing torque/hp curves for even the 2.8 that all that torque and hp will be made well below 3000!  let alone 4200!!!  Bravo cummins, ford and epa!  I am surprised ford didnt jump on this, but they are after turbos and such…

  • Jason Carpp

    While I can understand the need to get better fuel economy, I disagree with the standards the trucks are expected to meet. I consider 35mpgs to be, at best, unrealistic, even with a diesel engine. For a truck the of the Nissan Titan or the Toyota Tundra, etc., I’d expect such a vehicle to get around 25-30mpgs. For a full-sized truck, that’s not bad at all. Anything is better than 15-20mpgs. And that’s just for “normal, everyday driving”. If you intend to tow a trailer, or haul stuff, I’d expect between 15 and 25mpgs.