Next-generation Cummins 6.7L turbo diesel first in class to deliver 1,000 lb-ft of torque
The Cummins 6.7L turbo diesel generates the first 1,000 lb-ft of torque in its class.
In 2019 at NAIAS, Cummins Inc. unveiled its next-generation 6.7L turbo diesel engine, which boasts a best-in-class 1,000 pound-feet (1,356 Nm) of torque. The engine increases both horsepower and torque, raising the 2500 and 3500 heavy-duty RAM pickup truck customers' performance to a new level.
The Cummins Turbo Diesel engine weighs more than 60 lbs. less overall than the previous generation engine, but it generates more power and torque.
There are two versions of the Cummins 6.7L inline-six turbo diesel available: the regular version produces 370 horsepower (850 pound-feet of torque), while the high version produces 400 horsepower (record-setting 1,000 pound-feet of torque).
A compacted graphite iron engine block that intensifies peak cylinder pressure capability and a cast-iron cylinder head with high-temperature capable exhaust valves that are activated by hydraulic lash adjusters in the block eliminate the need for valve train adjustment service intervals are among the base engine improvements made to support the higher output ratings of the next-generation 6.7L engine.
The engine's core consists of forged connecting rods and bearings, which transfer power from the low-friction ring-wrapped pistons. The engine's main part is the crankshaft, which has a 10-bolt crank flange and is composed of a stronger alloy.
A larger Cummins-Holset variable-geometry turbocharger with high-duty bearings and an upgraded compressor-side housing is the main element of the ratings that pushes 33 pounds per square inch (psi) of fresh air into the engine.
The fuel-delivery system includes a 29,000 psi (2,000 bar) fuel pump and fuel rail with Cummins Filtration "filter-in-filter" NanoNet technology. NanoNet features multiple distinct layers of protection for the removal and retention of particles as small as 4 microns in a composite media structure. These wholly continuous polymeric fibers are bonded together to provide stability during flow spikes and vibration.
In order to keep injectors spotless and enhance fuel atomization for more efficient combustion, Cummins claims that NanoNet is 10–13 times more effective than the closest competitor at removing 4-micron particle pollution.
Along with the most advanced and dependable RAM 2500 and 3500 heavy-duty engines, Cummins also displayed a 2.8L turbo diesel engine, the most latest turbocharging, filtration, and light-duty aftertreatment technology.
