Eaton banks on flexible, dual-clutch Procision
The latest member of the Eaton transmission line-up, the all-new Procision 7-speed dualclutch automatic transmission, can deliver 8 to 10% better fuel economy than a similarly equipped vehicle with a torque converter automatic. To be available globally, it features a dual clutch design and electronic shifting that uses grade, vehicle weight and throttle input to provide optimal fuel efficiency and smooth, continuous delivery of torque to a vehicle’s wheels under all shift conditions.
The all-new Eaton Procision is the first dual clutch transmission for class 6-7 in North America. Its smart features deliver more savings and driver confidence and it is the ideal transmission solution for mediumduty applications. Eaton employed the dual clutch technology to allow more efficient acceleration from a stopped position, and to optimise shift points that will efficiently get to the highest gear. Gear changes are made by swapping the engine torque between clutches with the next gear preselected.
The highly- efficient dual clutch technology with a closed loop control system significantly reduces slip and steady state losses that are associated with torque converter automatic transmissions. The dual clutch module is fully contained within the transmission, hydraulically controlled and oil cooled for extended life. A five-spring damper is used to control torsional vibrations and is fully sealed to eliminate contamination. Smart features such as Eaton Dynamic Shifting allow the transmission to automatically switch between economy and performance shift schedules based on mass, grade and driver demand. Base shift results are modified dynamically based on available torque, engine acceleration and grade.
Economy and performance shift tables can be adjusted to tune an overall calibration to meet any customer’s specific needs. The calibration flexibility is the most ever offered on an Eaton transmission.
Owners and drivers
alike will appreciate optional and adjustable Urge to Move and Creep Mode, which provides best-in-class lowspeed maneuverability. Optional and adjustable Hill Helper technology prevents roll back or roll forward for up to 3 seconds while on grades of up to 8%, allowing for a controlled launch. With Procision, these features can be turned on and off using Eaton’s Service Ranger software. Competitive products do not offer this type of flexibility.
Better fuel economy
The Eaton Procision transmission features an optimised design that delivers 8 to 10% or greater fuel economy improvement over a torque converter automatic. The Procision is fully integrated with Cummins Vehicle Acceleration Management, which can be used in conjunction with Eaton Dynamic Shifting to reduce the impact of an aggressive driver on fuel economy. The optimised Urge to Move and Creep Mode provide an excellent balance of efficiency and performance. These features can be disabled for even greater fuel economy if desired. In addition, transmission load on the engine is actively reduced when the truck is stopped for increased fuel economy.
Eaton Procision transmissions utilise a new synthetic transmission fluid which provides component protection while reducing maintenance costs thanks to 150,000 mile lube and filter change intervals. The internal sump filter and electrical system do not require maintenance. Brake-pedalactuated Tap Down Shifting gives the driver more control by downshifting on grades or other conditions without removing their hands from the wheel or eyes from the road.
Creep Mode allows controlled low-speed parking lot and loading dock driving without applying the accelerator. Forward and Reverse creep speeds are independently adjustable to allow a customised lower speed in reverse. In Low mode, Automatic Grade Braking downshifts the transmission to help slow the truck on long, steep grades and increase brake pad life.
Eaton’s Procision transmission