Plastic Transmission Accumulator Piston

This molded plastic transmission accumulator piston was designed around the current application so that the bore, seal rings, and return springs did not have to be changed and it was a drop-in replacement.  Maximum effort went into material choice (PPS) and model shape to achieve appropriate toughness to handle time, temperature, pressure, and combined cycling to create a 200,000-mile capable piston.  The resulting part is 29 g vs. typical 47 g for aluminum pistons.  A direct thermoplastic injection technology was developed to produce the parts, resulting in zero material waste through the use of a single-cavity design.  The process allowed for a 33% improvement in cycle times and reduce the total floor space required by 20% over previous multi-cavity processes. The innovative approach used here has allowed for a modular business cell that is adaptable to large market-volume fluctuations.

OEM/Vehicle Chrysler Group LLC 2012 All Chrysler Vehicles with Automatic Transmissions System Supplier Chrysler Group LLC Material Processor Freudenberg-NOK Sealing Technologies

Material Supplier Chevron-Phillips Resin Ryton R-Y-120 PPS Tooling/Equipment Supplier Freudenberg-NOK Sealing Technologies

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