Consisting of a new torque converter with Lock Up and free wheel stator, Optishift is a new system that integrates the Volvo-patented Reverse-by-Braking (RBB) function – both significantly reducing fuel consumption together by up to 15 percent – as well as increasing operator comfort and driveline durability.
When changing from forward to reverse (or vice versa), RBB applies the standard service brakes instead of the torque converter, slowing the machine and putting less stress on the converter and transmission.
OptiShift can significantly reduce fuel consumption in operations such as load and carry as well as in short cycle loading. The driveline lock up, meanwhile, improves drive response, rimpull and incline performance and fuel efficiency.