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Navistar unveils camless engine technology

7 April 2000

International Truck and Engine Corporation (operating company of Navistar International Corporation) demonstrated a camless diesel engine technology, which has been designed to address future emissions standards while improving engine performance.

Dan Ustian, president of the company's engine group, said "Our camless engine technology represents a radical change in the way engines operate, and we are pleased to be the first to demonstrate an operational camless diesel in a truck. We believe applying this technology to air management in diesel engines is the inevitable step to meeting customer and environmental needs."

Ustian spoke to a group of editors and reporters at the company's Melrose Park, IL, technical center and engine plant. He said that the International continues to refine its camless technology and expects to have a camless engine in the marketplace within three or four years.

According to Ustian, the camless technology expands upon the company's electro-hydraulic platform, and uses electronics to control valve timing in place of a conventional mechanical camshaft and push rod assembly. He said International® camless engine technology has been under development by the company and Sturman Engine Systems, LLC since the formation of a joint venture in 1995.

International camless engine technology was demonstrated to the media in an International 8100 truck with an International 530E diesel engine. International is now able to control air to and from the engine without the limitations imposed by a mechanical system of cams and levers. Instead, International camless engine technology uses electronics and hydraulics to actuate the valves. Based on extensive testing, the benefits of International camless engine technology include:

International has been in the engine business for nearly 100 years. The company currently is field testing its International Green Diesel Technology™, which uses a regenerative particulate trap and low-sulfur fuels to dramatically reduce particulates and help eliminate offensive odors and fumes.

Source: Navistar International Corporation