Piston pump

Brake Boost

LIVONIA, Mich., June 24 /PRNewswire - FirstCall/ -- Kelsey-Hayes Company, a subsidiary of TRW Automotive Holdings Corp. (NYSE: TRW), has developed a modular multi-piston pump electronic stability control (ESC) system with enhanced performance to rapidly build brake pressure independent of vacuum boost from the engine.

TRW's Modular Multi-Piston Pump Electronic Stability Control

Traditional brake systems rely on a vacuum booster that is assisted by vacuum from the internal combustion engine. But with the rapid growth of direct injection engine technologies, engine vacuum levels are trending lower.