Patent ID: 8302390
Filing Date: 2012-11-06
Classification: F02B,F16K,Y02T

Abstract:
1. A valve for controlling a wastegate actuator of a turbocharger having a compressor, comprising: a bobbin having a coil for generating a magnetic field; a stator extending through said bobbin, said stator including a top portion and an internal channel; a housing having a compressor port, wastegate actuator port and an atmospheric port which are in fluid communication with said compressor, said wastegate actuator and atmosphere, respectively and wherein said compressor port and said wastegate actuator port are in fluid communication with each other; and a pair of walls extending from said housing for enabling movement of a permanent magnet between a first position with the coil not energized such that a magnetic attraction is formed between said top portion and said permanent magnet causing said permanent magnet to contact said top portion to seal said internal channel thus enabling substantially equal boost pressure levels in said compressor and said wastegate actuator ports and a second position wherein the coil is energized to generate a magnetic field for repelling said permanent magnet and moving said permanent magnet to a position above said top portion to thus unseal said top portion and said internal channel to enable a portion of said boost pressure level to be vented to atmosphere, wherein the permanent magnet moves from the second position back to the first position when the coil is not energized.