PISTON COOLING JET FOR AN INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
May 11, 2017
app pub date -
Nov 4, 2016
filing date -
Nov 6, 2015
priority date (Note) -
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Abstract
A piston cooling jet for an internal combustion engine includes a body having a coolant duct extending between a coolant duct inlet and a coolant duct outlet fluidly connected to a coolant nozzle. The piston cooling jet includes a plunger having a plunger stem and a plunger head. The plunger is movable within the coolant duct of the body between a closing position that closes the coolant duct inlet and an opening position that opens the coolant duct inlet. The piston cooling jet further includes a biasing spring coupled to the plunger to bias it towards the closing position. A plunger coolant channel has an inlet at the plunger head and an outlet at the plunger stem, channeling coolant downstream of the plunger head when the plunger is in the opening position.
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