MACK ADDS NG MODELS
Mack Trucks is expanding its natural gas-powered offerings and has taken a step forward in its hybrid vehicle development process.
You’ll see NG versions of the Pinnacle and Granite models next year for on-highway and construction applications, both using the Cummins Westport ISX12 G engine with compressed (CNG) or liquefied (LNG) fuel systems. Customer testing is scheduled to begin this year.
Mack already offers natural gas-powered TerraPro low-entry and cabover refuse models (see photo).
The NG Pinnacle and Granite models will feature maintenance-free aftertreatment and require only a three-way catalyst to meet EPA 2010 and CARB emissions standards.
Mack is also investigating other alternative technologies, including high-pressure direct injection, which uses a combination of natural gas and a small amount of diesel in the combustion process, as well as DME (dimethyl ether), which can be produced from natural gas or biomass.
The company says it’s also moving forward on development of diesel/electric hybrid TerraPro models, recently delivering additional Low Entry test units to the New York City Department of Sanitation for evaluation.
Mack says its hybrid technology provides up to a 30 percent fuel economy improvement in stop-and-go applications such as refuse, with a corresponding greenhouse gas emissions benefit.
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