Parker Hannifin is advancing brake-by-wire technologies with the introduction of its PE06 proportional pressure reducing valve which combines a proportional valve piston with an internal hydraulic feedback piston. This design allows precise control of the reduced pressure along with a high-volume flow over the valve. Other benefits include a low internal leakage rate and a proven, reliable and robust design.
Brake-by-wire replaces mechanical links with electronic signals to improve safety, efficiency, braking response time, and design flexibility, while also saving on the weight and space needed for heavy hydraulic components. It reduces the risk of catastrophic failures in cases of nonperformance of one circuit or electronic path. This compact valve enables advanced brake-by-wire systems by providing fast, precise hydraulic pressure control for electric/electro-hydraulic braking, which is critical for autonomous and automated vehicle control systems and is key to creating hydraulic-free cabins which help to reduce noise, heat and production time, since many cabs come preassembled.
It is rated for leakage of 25 cc at 200 bar, maximum inlet pressure of 250 bar and control pressure up to 170 bar. It offers flow rates of 30 lpm (pressure-dependent). A simple design revision can adapt/customize the valve to two pressure levels — 120 and 175 bar — to meet specific customer requirements.
In addition, a solenoid connection AMP Junior Timer and DT04-2P “Deutsch” are now available with an integrated suppressor diode (optional) for serial quantities upon request. The AMP timer was previously available with a suppressor diode, but the Deutsch connector is new.
“The design of the new PE06 valve is similar to that of Parker’s successful direct operated proportional directional control valve (D1FB) which means it already has a proven track record,” said Frank Henschke, Product Manager, Motion Systems Group at Parker. “The similarities in design and components allow for a cost-optimized design and cost-effective production. Thanks to its modular design, it’s possible to use approximately 90 percent of the standard components of the D1FB industrial series when specifying the new proportional pressure reducing valve.”
Parker Hannifin
parker.com
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