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Cummins introduces 5L V8 diesel for North American light- and medium-duty commercial vehicles

The new ISV 5.0 diesel. Click to enlarge.

Cummins Inc. introduced the ISV5.0, a new 5-liter V8 diesel engine designed to power pickup-and-delivery vehicles, other light- and medium-duty trucks, school buses and motorhomes. The ISV5.0 extends Cummins range of on-road diesel engines for North American vehicles. Like the new 5.0L V8 Turbo Diesel to be used in the Nissan Titan pick-up truck (earlier post), the ISV5.0 will be manufactured at the Columbus Engine Plant, with production to start during the fourth quarter of 2014.

Cummins ISV5.0 will serve customers in the United States and Canada, and will be certified to US EPA 2013 NOx and PM emissions levels. At launch, it will also meet greenhouse gas (GHG) requirements through 2016, and 2015 California Air Resources Board (ARB) standards, including on-board diagnostics.

Cummins ISV5.0 creates new opportunities for our OEM customers as a compact and lightweight engine that delivers best-in-class fuel efficiency and total cost of ownership. Many of our customers have asked for a Cummins alternative for gasoline or other small displacement automotive diesel engines. The ISV5.0 represents the next dimension in fuel economy and performance as Cummins continues to broaden our on-highway product line.

—Dave Crompton, Cummins Vice President and General Manager – Engine Business

The ISV5.0 has been designed to fit where a comparable V8 or V10 gasoline engine was previously installed. Multiple front-end accessory drive options handle the common automotive accessories required by a wide spectrum of applications, including the alternator, air compressor, A/C compressor and hydraulic pump. These available options, coupled with Cummins integration support, will minimize OEM engineering time and vehicle retooling costs, the company suggested.

Cutaway of the ISV 5.0L engine. Click to enlarge.

The ISV5.0 brings together a compacted graphite iron (CGI) cylinder block; forged steel crankshaft; high-strength aluminum alloy heads; and composite valve covers to offer maximum durability in a lightweight package. These features, along with dual overhead camshafts, also contribute to the noise, vibration and harshness (NVH) characteristics achieved by the ISV5.0.

High injection pressures (up to 2,000 bar) from the latest Bosch High Pressure Common Rail (HPCR) fuel system and piezo fuel injectors provide precise fuel control for optimized in-cylinder combustion, leading to better fuel efficiency and reduced emissions.

With multiple injection events, the HPCR fuel system, along with Cummins VGT Variable Geometry Turbocharger, contributes to a peak torque of 560 lb-ft (759 N·m), and quick throttle response. Ratings from 200 hp (149 kW) to 275 hp (205 kW) are available.

In cold weather, the advanced ceramic glow plug system significantly reduces start time and electrical current draw, reducing vehicle charging system requirements. The ceramic glow plugs are designed to last the life of the engine, with no maintenance.

A two-stage fuel filter system for the ISV5.0 features the latest NanoNet media from Cummins Filtration, to ensure that the HPCR fuel system is fully protected against fuel contamination. NanoNet’s construction provides lower fuel-flow restriction and traps greater than 99% of all particles as small as 4 microns.

Cummins Filtration’s expertise also extends to a high-efficiency coalescing filter, for eliminating crankcase hydrocarbon emissions and oil mist, further adding to the clean-engine credentials of the ISV5.0.

Cummins VGT Turbocharger, cooled Exhaust Gas Recirculation (EGR) and Cummins Emission Solutions Aftertreatment System, featuring a Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR), result in near-zero oxides of nitrogen (NOx) and particulate matter (PM) emissions while delivering better performance and fuel economy.


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