Control Valve Description: Accumulator
- Accumulators are set at each location to reduce shift shock generated when the forward clutch, the direct clutch, or second brake is in operation. There is an area difference between the working side and the back pressure side of the accumulator piston; the working side area is larger than the back pressure side. The line pressure acts on the back pressure side at all times to push down the piston. When the passage to the working side opens and the line pressure is in operation, the piston is gradually pushed up and reduces shift shock.
Courtesy of MAZDA MOTORS CORP.