“Our Super Econodyne rating was previously only available with the overdrive version of the mDRIVE, but the recent release of numerically lower rear axle ratios allows us to use the direct drive variant,” said Scott Barraclough, Mack technology product manager. “The result is up to 1 percent better fuel efficiency on top of the 3 percent Super Econodyne already delivered on its own.”
Despite a numerically higher top gear ratio, the direct drive mDRIVE is inherently more fuel efficient thanks to reduced parasitic losses. This is due to the fact that torque is not transmitted to the direct drive mDRIVE’s countershaft while in top gear. Instead, the transmission’s input and output shafts are essentially locked together.
Super Econodyne Direct is best suited for applications of 80,000 lbs. GCW or less where drivers remain in top gear for a large percentage of time. It also works best on mostly flat terrain and when drivers remain mostly in constant speed.
Mack’s Super Econodyne rating fully integrates Mack MP® engines and the Mack mDRIVE to deliver significant fuel savings. The integrated powertrain enables lower engine cruise RPM to save fuel, without impacting power or performance. Super Econodyne-rated Mack engines cruise at approximately 1,150 rpm, a reduction of 200- 300 rpm from a typical highway cruise rpm, which results in up to 3 percent improved fuel efficiency.
For more information about Super Econodyne Direct, please visit Mack booth No. 34075 at the 2017 Mid-America Trucking Show or your local Mack dealer.
Dedicated to durability, reliability and meeting the needs of customers, Mack Trucks has provided purpose-built transportation solutions for more than a century. Today, Mack is one of North America's largest producers of heavy-duty trucks, and Mack® trucks are sold and serviced through an extensive distribution network in more than 45 countries. Mack trucks, diesel engines and transmissions sold in North America are assembled in the United States. Mack manufacturing locations are certified to the internationally recognized ISO 9001 standard for quality, ISO 14001 standard for environmental management systems and OHSAS 18001 standard for health and safety management systems. Mack is also a proud sponsor of Share the Road, an American Trucking Associations' public information campaign aimed at enhancing the safety of our nation's roadways.
Mack Trucks is part of the Volvo Group, one of the world's leading manufacturers of trucks, buses, construction equipment and marine and industrial engines. The Group also provides complete solutions for financing and service. The Volvo Group, with its headquarters in Gothenburg, Sweden, employs about 95,000 people, has production facilities in 18 countries and sells its products in more than 190 markets. In 2016, the Volvo Group's net sales amounted to about $33 billion. The Volvo Group is a publicly- held company. Volvo shares are listed on Nasdaq Stockholm.
For more information about Mack, visit our website at www.macktrucks.com