PRESSURE REGULATING SOLENOID VALVE
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United States of America Patent
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Jun 15, 2015
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Jul 1, 2014
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Abstract
A solenoid valve which regulates the pressure in a pressurized fuel injection system includes a body containing a needle that is pressed by an electromagnet including a coil and a magnetic core. The core has a cavity that is in fluid communication via an internal channel with a counterbore in the body into which the needle protrudes and into which fuel flows during use. The core also has a restriction which restricts the fluid communication and which attenuates pressure waves propagating in the fuel to prevent the waves from moving the core.
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