AUSTIN, TX - Mack Trucks' choice of the setting and day to unveil a series of powertrain upgrades was no coincidence. Austin, Texas is known for its music and barbecue, but is also recognized as one of the Top 10 greenest cities in the U.S. And April 22 marks Earth Day.
Collectively, they offered a fitting backdrop for changes made in the name of fuel economy.
The 2017 Mack MP engine lineup will see fuel economy jump between 2.1 and 8.8% compared to today's models, while a new Predictive Cruise will effectively memorize terrain and enhance shifts when routes are repeated.
Engine upgrades include a common rail fuel system, and turbo compounding that tranforms waste heat into torque on the camshaft.
Fuel-saving enhancements have certainly put the engines on a diet. The common rail fuel system, widely used in Europe, allows for an assembled camshaft that is 27 pounds lighter than its single-piece predecessor. The MP8's cylinder block is also 44 pounds lighter than today's models. Even when turbo compounding is introduced on the MP8, the engine is still 33 pounds lighter than existing models.