UPDATE: Autoblog spoke with Infiniti spokesperson Nick Twork, who clarified some of the details originally outlined in this story. First, all current Q50 models without Direct Adaptive Steering use hydraulic power steering. The proposed new system would be adapted from the previous G37S, which used a variable-ratio hydraulic steering rack. This is the one that could potentially be used in the Q50S for the 2016 model year.
Electric Power Steering
With as far electric power assist steering (EPAS) has come in recent years, it was only a matter of time before an automaker came up with a fully electric steering system. Nissan has developed such a system that replaces the mechanical steering linkage of today's cars with a "wired" steering column that uses drivers inputs to steer the front wheels via electronic controllers, and this type of system could be found on Infiniti models within the next year.
Back in November of 2010, Mitsubishi Electric Corporation (MEC) announced that it was actively developing what it claimed to be the "world's smallest and lightest" motor controller unit for electric power steering systems in automobiles. This compact unit is, according to Mitsubishi, half the size and 30 percent lighter than the company's current products, while offering equal power output.
Mitsubishi Electric Corporation announced that it's developed the world's smallest and lightest motor controller unit for electric power steering systems in automobiles. This compact unit is claimed to be half the size and 70 percent the weight of the company's current products. Despite its compact size, Mitsubishi Electric claims to have improved output power of its motor controller by roughly 30 percent through optimization of the electromagnetic design and an increase in the motor's coil dens
Since Ford is replacing the entire engine lineup for the 2011 F-150 pickup trucks, it has apparently decided not to reinstall at least one component that is usually bolted to those engines: the hydraulic power steering pump. According to PickupTrucks.com, the updated models will be the first full-size trucks to use electric power steering (EPAS) almost across the board.
In recent years, electric power steering systems (EPAS) have rapidly been supplanting older hydraulic systems as a means of reducing both weight and parasitic losses. Until now, most of the EPAS applications have been on small- to mid-sized cars.