Marmon-Herrington® Launches iVT and VPD

Marmon-Herrington® Launches Infinitely Variable Transmission (iVT)

Combines Benefits of Hydrostatic and Automatic Transmission in a Single Unit

LOUISVILLE, KENTUCKY–Marmon-Herrington announces the release of a new hydro-mechanical transmission that maximizes the advantages of both hydrostatic and mechanical transmission technologies. By combining the benefits of low-speed hydrostatic drive and high-speed mechanical drive, Marmon-Herrington’s infinitely variable transmission is expected to provide fleets a significant reduction in operating costs, maintenance, fuel consumption, and greenhouse gas (GHG) emissions, as well as associated driver benefits.

“The HydroMechiVT™ is specifically designed for applications where performance is limited by torque converter waste and inefficiency,” says Rick Blair, President of Marmon-Herrington’s OEM Division. “Market-specific application of this technology will provide fleets a significant reduction in operating costs such as brake wear and maintenance.”

“Our hydro-mechanical iVT offers meaningful drivetrain efficiency improvements, most notably in start-stop applications,” says Nathan Webster, Marmon-Herrington Engineering Manager. “When applied to the duty cycle for a standard New York City garbage truck, calculated efficiency improvements of 11% have been identified with improvements of over 15% in other cities.”

Marmon-Herrington is working with key customers within the agriculture, refuse, and defense industries for development and testing. Thousands of test hours have been successfully completed on multiple vehicles with the goal to begin iVT production as early as 2018. The technology will be produced in Louisville, KY at Marmon-Herrington’s Magisterial Drive location and is part of the Marmon-Herrington HydroMech® family of products for class 6 through 8 trucks.

Marmon-Herrington® Launches Variable Power Divider (VPD)

Eliminates Auxiliary Engine Complexity and Associated Cost

LOUISVILLE, KENTUCKY–Marmon-Herrington announces the release of a new variable power divider (VPD) that eliminates the need for an auxiliary diesel engine in applications where a second power source has traditionally been required. By dividing the truck’s diesel engine into propulsion power and auxiliary power, the Marmon-Herrington VPD reduces operating costs, maintenance, and greenhouse gas (GHG) emissions for fleet managers while providing meaningful driver-friendly benefits to equipment operators. The technology is produced in Louisville, KY at Marmon-Herrington’s Magisterial Drive location and is part of the Marmon-Herrington HydroMech® family of products for class 6 through 8 trucks.

“A hydrostatic variator is fundamental to this patented technology,” says Nathan Webster, Marmon-Herrington Engineering Manager. “Because the VPD allows the engine and auxiliary device to run independently of each other, customers benefit immensely from the elimination of the second engine. The VPD is capable of running the auxiliary device up to and above full engine RPM while also allowing the driver to vary the vehicle speed as normal. This saves time, money, and complexity.”

“The HydroMechVPD™ is specifically designed as a single-engine solution to save fleets money and simplify operation,” says Rick Blair, President of Marmon-Herrington OEM Division. “We expect customers to see additional benefits through reduced weight and improved packaging. The entire HydroMech brand is built around technology that delivers the quality and reliability Marmon-Herrington is known for, while creating exceptional end-user value,” Blair concluded.

Marmon-Herrington is currently focusing on key opportunities within aircraft rescue & firefighting (ARFF), street sweeping, agriculture, defense, and other markets that can benefit from this innovative technology.
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Marmon-Herrington offers a full-range of double reduction, planetary axles and durable transfer cases for trucks and specialized vehicles within North America as well as class 6 through 8 all-wheel-drive conversions. With over 85 years of driveline know how, Marmon-Herrington sets the standards in each of its product offerings. Marmon-Herrington is a Marmon Highway Technologies/Berkshire Hathaway company. Marmon Highway Technologies (MHT) supports the transportation industry worldwide with a wide range of high-quality products and services. For more information, contact Dan Souhan, Marmon-Herrington, 13001 Magisterial Drive, Louisville, KY 40223, 269-873-5552, www.marmon-herrington.com.