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Bradley Allen :

Leading diesel engine manufacturer reveals specifics about models, block design for North American Class 8 commercial vehicles.


Bradley Allen :
MELROSE PARK, Ill. (Feb. 9, 2006) – International Truck and Engine Corporation recently released more details about its entry into the big bore diesel engine market for its Class 8 commercial vehicles. The information was posted to the Web site

The previously undisclosed details include:

· The number of big bore models that will be available in Fall 2007. International initially will offer two big bore models in the 11-liter and 13-liter class.

· Specific information about the International® big bore cylinder block, the “backbone” of the engine. International is the first to announce a line of big bore engines for the North American commercial market that features a lightweight yet virtually indestructible engine block cast entirely from compacted graphite iron (CG Iron).

“As the integrated choice for heavy-duty owners and drivers, International Class 8 vehicles powered by this new big bore with CG Iron block will exceed their performance expectations,” says Jacob Thomas, vice president, International Big Bore Engine Business. “Upon this advanced foundation, we’ll deliver outstanding fuel economy, competitive horsepower and torque ratings, very low noise and vibration and unsurpassed uptime, durability, reliability and drivability.”

The new engine is the first outcome of a previously announced strategic agreement between International and MAN Nutfahrzeuge to collaborate on design, development, sourcing and manufacturing of components and systems for commercial trucks and diesel engines. MAN utilizes a CG Iron block in its successful and proven big bore diesel engines for the European commercial truck market. A team of engineers from International and MAN have drawn on that experience to incorporate the CG Iron block design for the International big bore.

CG Iron: Stronger, Lighter
Compared to gray iron – currently the most common material from which truck engine block castings are made – CG Iron is 70 percent stronger and 40 percent stiffer, with double the fatigue limit, all qualities necessary to meet the growing requirements of heavy-duty trucking. These superior physical properties are attributable to CG Iron’s make-up. A precise amount of magnesium is added to the base iron compound in a highly controlled process to create a new compound that is much harder than traditional gray iron, greatly increasing resistance to stress cracks.

Because compacted graphite iron has higher inherent strength, castings don’t have to be as thick and heavy in order to achieve the desired durability required for heavy-duty diesel operation. This provides weight savings of several hundred pounds versus an engine block cast from gray iron of equivalent strength.

International big bore engines will be offered exclusively in International® ProStar™ line-haul tractors, International 8600 regional haul tractors and International 7000 Series severe service trucks. The company also will continue to offer Cummins and Caterpillar alternatives in its Class 8 vehicles.

Other key features of International’s modern big bore diesel include:

· Flexible and responsive direct-injection, high-pressure common-rail electronic fuel system capable of multiple injection events
· Durable single-overhead-cam actuating 4-valves per cylinder and roller rocker arms
· Rugged gear-driven air compressor and power steering pump
· Rear-gear train and pad-mounted accessories designed for low noise
· Full 2007 EPA emissions compliance by extending International’s proven Green Diesel Technology® platform to its big bore engines

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