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  • Cummins ISV5.0 V-8 - Torque

Cummins ISV5.0 V-8 - Torque

A Compact and Lightweight Gasoline Alternative

Feb 7, 2014
Photographers: Courtesy of Cummins
If the all-new 5.0L V-8 engine from Cummins sounds familiar, it’s because the company has been holding it just out of our reach for several years. Born out of a partnership between Cummins and Chrysler, with research funding from the Department of Energy, the ISV5.0 has been in development for more than a decade. Originally designed as a pickup engine and intended for the Ram 1500, the project was shelved when the automotive industry nearly collapsed in 2008. Thankfully, Cummins has found a new OEM partner in Nissan and resurrected the dormant engine in a big way. In addition to the pickup version of the engine, Cummins has developed a commercial version of its 5.0L V-8, named the ISV5.0. This powerplant is being marketed in the commercial world as a replacement for V-8 and V-10 gasoline engines, along with supplanting less efficient diesel mills, in everything from delivery trucks to motorhomes.
"Drivers will appreciate the smooth, quiet operation of the ISV5.0.
— Jim Katzenmeyer, Executive Engineer – V-8 Program"
Before we get too deep into the mechanicals, we need to address the elephant in the room. Yes, the Cummins 5.0L V-8 Turbo Diesel engine—what Cummins is calling the pickup version of the engine—is going into the ’15 Nissan Titan. However, the ISV5.0 we are currently talking about is not that engine. While the majority of the two powerplants’ components cross over, the pickup engine will have a few significant differences that have not yet been made public.
The ISV5.0 goes beyond the traditional Cummins engine design and utilizes the latest in technological advances to deliver exceptional performance and fuel efficiency. The block is a 90-degree “V” and is comprised of compacted graphite iron (CGI) while the heads are made from a high-strength aluminum alloy; both are firsts for Cummins. Helping to shed weight, the heads are shrouded in composite-plastic valve covers. Tucked inside, the crankshaft is machined from forged steel, while the pistons are whittled from cast aluminum. Dual overhead camshafts, with four valves per cylinder, aid in high-rpm performance, while hydraulic lifters eliminate the need for periodic valve adjustments. The same chain drive that spins the camshafts also turns both the oil and fuel pumps.
Photo 2/3   |   Cummins 5 0 V8 Cylinder Cutaway
Fueling is handled by way of a Bosch high-pressure common-rail fuel system. A CP4.2 injection pump resides in the valley and is capable of producing up to 29,000 psi of injection pressure. Centered in each cylinder is a piezo fuel injector, which can fire off up to seven injections per combustion event, delivering quick throttle response and quieter operation. Compressed air is fed to the cylinders by a single, electronically actuated and water-cooled, Cummins Turbo Technologies VGT turbocharger after routing through an air-to-air charge-air cooler. Ceramic glow plugs—designed to last the life of the engine—significantly reduce startup time in extreme cold conditions.
To combat emissions, the ISV5.0 is fitted with a cooled exhaust gas recirculation (EGR) system. Exhaust aftertreatment is handled by a proprietary arrangement developed for this engine by Cummins Emissions Solutions, which includes both a diesel particulate filter (DPF) and selective catalytic reduction (SCR). This fully integrated system is designed to deliver excellent fuel economy and near-zero emissions.
Photo 3/3   |   Cummins 5 0 Turbo Cutaway
The ISV5.0 will be available in four power level calibrations, depending on each customer’s specific need. Multiple front-end accessory drive options will handle the common needs required by the broad spectrum of applications the engine is intended to fill. Alongside the 5.0L V-8 Turbo Diesel engine for pickup trucks, the ISV5.0 will be manufactured at the Columbus Engine Plant in Columbus, Indiana, starting in the fourth quarter of 2014.
Fast Specs
Engine: Cummins ISV5.0
Displacement: 5.0L
Bore and Stroke: 94 mm x 90 mm
Cylinders: 90-degree V-8
Block: Compacted graphite iron
Heads: Aluminum
Pistons: Aluminum
Valvetrain: DOHC, four valves per cylinder
Horsepower: 200, 220, 250, or 275 hp at 3,200 rpm
Torque: 520 or 560 lb-ft at 1,600 rpm
Induction: Single-wastegated variable-geometry Cummins Turbo Technologies turbocharger
Fuel System: High-pressure common-rail, Bosch CP4.2 injection pump, piezo injectors
Peak Injection Pressure: 29,000 psi
Emissions Equipment: EGR, DPF, SCR
Engine Dry Weight: 804 pounds
Aftertreatment System Weight: 95 pounds


Columbus, IN 47202
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