Eaton announced this week that its Vehicle Group has formed a new ePowertrain business unit, which will focus on products from Eaton’s electrified vehicle (EV) transmission, reduction gearing and differential portfolios.
“Automakers face many challenges when developing an EV powertrain, such as optimizing efficiency, weight, and noise, vibration and harshness (NVH), and dealing with packaging constraints,” said Anthony Cronin, product director, EV Gearing and Differentials, Eaton’s Vehicle Group. “Eaton can help manufacturers overcome these challenges by utilizing our many years of experience and in-house capabilities in design, validation and manufacturing of high-precision, high-quality gearing, transmissions and differential solutions.”
Eaton’s portfolio of multispeed transmissions includes 2-, 4- and 6-speed electrified commercial vehicle transmissions. Eaton’s EV transmissions are based on an efficient layshaft architecture typical of automated manual transmissions (AMTs) and shifting is synchronized without a clutch using a traction motor.
Eaton says that their EV transmissions feature a lightweight countershaft gearbox that boasts a range of torque capacities and electric gearshift actuation, allowing the use of smaller electric motors.
Eaton conducts total system analysis, using state-of-the-art tools and in-house expertise, to design EV gearing solutions optimized for efficiency and reliability, with low NVH levels and reduced manufacturing costs. A full-system approach is essential when tailoring a design to a specific customer need, as several factors influence the development of gearing solutions. Chief among those factors are the gears, bearings and lubrication system.
Eaton’s Vehicle Group offers a wide range of specialized differentials for EVs with performance comparable to differentials designed for traditional internal combustion engine (ICE) vehicles. Eaton’s traction control family of differentials provide improved traction in adverse conditions such as snow and mud and improve stability while trailering. Eaton says it has extensive knowledge of vehicle dynamics and safety standards and decades of experience working with global automotive manufacturers to integrate differentials into new-vehicle platforms.
Eaton offers a full range of differentials for EVs, including automatic limited-slip, automatic locking and electronic selectable locking differentials. Each is highly engineered, tested and validated for a variety of traction control applications. Performance is verified at Eaton’s Proving Ground testing complex in Marshall, Michigan, home to more than 600 acres of testing facilities and tracks.
“Our new ePowertrain business unit can provide our customers with an optimized, integrated EV powertrain, which will help simplify their engineering development process,” Cronin said. “We will work with our global customers to determine the ideal combination of transmission, gearing and torque solutions that best meet their EV needs.”
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