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Motorhoming | Family Motor Coach Association

Cummins ISV5.0 diesel engingCummins Inc. recently announced the ISV5.0, a new 5-liter V8 diesel engine for motorhomes, school buses, and light- and medium-duty trucks.

"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," said Dave Crompton, Cummins vice president and general manager - Engine Business.

The ISV5.0 is designed to easily 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 expertise, are intended to minimize OEM engineering time and vehicle retooling costs.

According to a press release issued by Cummins, the ISV5.0 brings together a compacted graphite iron cylinder block, forged steel crankshaft, high-strength aluminum alloy heads, and composite valve covers to offer maximum durability in a lightweight package.

High injection pressures 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, the press release states.

With multiple injection events driven by integrated electronic controls, the HPCR fuel system, along with Cummins VGT Variable Geometry Turbocharger, contributes to a peak torque of 560 pound-feet and a quick throttle response. Ratings from 200 to 275 horsepower 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 protected against fuel contamination. NanoNet's unique construction provides lower fuel-flow restriction, and traps greater than 99 percent of all particles as small as 4 microns.

The Cummins ISV5.0 also features a high-efficiency coalescing filter, designed to eliminate crankcase hydrocarbon emissions and oil mist.

"Cummins has integrated the latest technologies in the ISV5.0 to deliver performance, fuel efficiency and durability in a highly sociable package. Every day, drivers will appreciate the smooth, quiet operation of the ISV5.0," said Jim Katzenmeyer, executive engineer - V8 Program. "In addition, the fuel savings offered by the ISV5.0 result in fewer greenhouse gas emissions - a great environmental benefit."

The Cummins ISV5.0 is available in the United States and Canada. According to Cummins, it will be certified to the near-zero NOx and PM emissions levels required by the U.S. Environmental Protection Agency. At launch, it will also meet greenhouse gas requirements through 2016, and 2015 Air Resources Board standards, including on-board diagnostics.

The ISV5.0 will be manufactured at Cummins’ Columbus, Ind., engine plant. Production of the ISV5.0 will start during the fourth quarter of 2014.

"Our customers want the ISV5.0 engine to come with the world-class service network and customer support that Cummins already provides to them," said Jeff Jones, Cummins vice president - North American Engine Business. "The support of this engine will easily be integrated into Cummins distributors and authorized dealer shops, and into customer operations with fleets that are running the broad range of dependable Cummins power."

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