Control Valve: Construction
WARNING: This page is about a different car, the 2013 Subaru Forester, 2012 Subaru Forester, 2011 Subaru Forester, and 2010 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
The structure of the control valve is simplified by disusing the accumulator and decreasing the number of mechanical valves. This allowed a two-layered body structure, which contributes to minimizing the size and weight. Also, the transfer hydraulic control mechanism is contained in the control valve.
Oil pressure from the duty solenoid for each clutch will be directly applied to the clutch/brake without flowing through an accumulator, therefore the engagement/disengagement control range is widened and the response during gear shift is improved.