blowoff valves การใช้

• Some blowoff valves are sold with a trumpet-shaped exit that intentionally amplifies the sound.
• Motor sports governed by the FIA have made it illegal to vent unmuffled blowoff valves to the atmosphere.
• Some turbocharged vehicle owners may purchase a blowoff valve solely for the auditory effect even when the function is not required by normal engine operation.
• Blowoff valves are used to prevent compressor surge, a phenomenon that readily occurs when lifting off the throttle of an unvented, turbocharged engine.
• A blowoff valve, ( sometimes " hooter valve " ) performs the same task but releases the air into the atmosphere instead of recirculating it.
• An alternative method for utilizing both a MAF and a blowoff valve is to have the MAF located down stream between the intercooler and the throttle plate.
• By using a blow-through method, the MAF won't be affected by the blowoff valve opening as the pressure is vented before the air reaches the MAF.
• For example, on a SR20DET engine, the MAF must be at least 12 " from the throttle plate, and the blowoff valve must be 6 " from the MAF sensor.
• Takagi took fourth, Forsythe Racing teammates Tagliani and Carpentier rounded out the top ten qualifiers; Carpentier was hampered by an electrical problem which overheated his engine and was unable to improve his time when his blowoff valve opened between the first and second turns.