2.8L Cummins Titan

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2.8L Cummins Diesel






Cummins has been working with the Department of Energy (DOE) and Nissan in developing a high efficiency 2.8L diesel engine. The project dates back to 2010, and we hope to hear that the project is nearing completion sometime in 2014. The test mule for the 2.8L, inline 4 cylinder is Nissan's Titan pickup, though Nissan has not confirmed that the engine will be offered in future models of the Titan. Efficiency, emissions, and power density are priority outcomes that Cummins and the DOE hope to accomplish. In previous test results, the engine was able to deliver more than 26 mpg while powering a 5,000+ lb Nissan Titan.


The 2.8L Cummins is not a clean slate engine; it is based on the ISF2.8, which Cummins produces for commercial vehicle applications in Europe. With stricter emissions regulations here in the States, the engine has obviously undergone many changes to meet Tier 2, Bin 2 requirements. The engine features a unique diesel oxidation catalyst (DOC), selective catalytic reduction system (SCR), and diesel particular filter (DPF); all three systems are combined and mounted to the engine, rather than farther down in the exhaust stream. The engine also has a water-to-air intercooler (charge air cooler). It seems no stone was left unturned in Cummins and the Department of Energy's journey to maximize efficiency.


2.8L Cummins Specs


2.8 liters, 171 cubic inches.


Inline 4 cylinder diesel.


Direct Injection, high pressure commonrail, piezo injectors.


Turbocharged, water-to-air intercooler/charge air cooler.


Approx. 475 lbs, not including emissions equipment.


210 hp @ 3,600 rpm.


385 lb-ft @ 1,800 rpm.


In testing, the engine has been mated to a ZF built 8 speed automatic transmission. The small displacement 4 cylinder turbodiesel musters up an impressive 385 lb-ft of torque at a modest 1,800 rpm. Though torque curves have not been made public, we'd assume the is it flat and broad, especially considering the target fuel economy is 28 mpg. Nissan has been hesitant to comment on its participation in the ATLAS ( Advanced Technology Light Automotive Systems) project, and has not provided any insight as to whether or not it is seriously considering a deal with Cummins beyond providing a testing platform. With Ram Trucks preparing to release their Ram 1500 diesel, which will not be powered by a Cummins, this could be a unique opportunity for Nissan.




Cummins Inc.

Ram Trucks (Chrysler)