• Mack unveils EGR engines

    At the Mid-America Trucking Show, Mack Trucks announced plans to offer two exhaust-gas recirculation (EGR) engines to meet this fall's emissions reduction deadline one for highway fleets and the other for vocational applications. Both are part of the company's ASET engine group, for Application Specific Engine Technology. Mack said the engines for on-highway fleets will use cooled EGR (C-EGR) technology,
    May 1, 2002
    2 min read

    At the Mid-America Trucking Show, Mack Trucks announced plans to offer two exhaust-gas recirculation (EGR) engines to meet this fall's emissions reduction deadline — one for highway fleets and the other for vocational applications. Both are part of the company's ASET engine group, for Application Specific Engine Technology.

    Mack said the engines for on-highway fleets will use cooled EGR (C-EGR) technology, while vocational fleet engines will be equipped with internal EGR (I-EGR) technology. C-EGR recirculates exhaust back into the engine's combustion chamber to burn off emissions, while I-EGR keeps the exhaust in the engine's cylinders from one combustion cycle to the next to reduce emissions.

    Mack explained that I-EGR technology wouldn't be used for its on-highway engines because the fuel penalty would be too severe. When used in vocational operations, however, I-EGR does not result in the same degree of fuel penalty. The OEM said that C-EGR engines would have a fuel penalty of about 3% and cost an additional $3,000 per vehicle.

    Also new from Mack is the Vision day cab tractor, which is built around a 113-in.-BBC chassis to save weight and provide more maneuverability. The Vision day cab is available in Class 8 tractor and straight truck configurations, in either single rear or twin rear axle combinations; GVW ratings range from 35,000 to 60,000 lb. The Vision day cab will go into limited production in June, with full production slated for October.

    Go to www.macktrucks.com or circle 312 on reply card

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