Controlled leakage valve for piston cooling nozzle

Details Controlled leakage valve for piston cooling nozzle Controlled leakage valve for piston cooling nozzle

2008-04-01

2008-04-01

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Cooling

Internal cooling of moving parts; e.g., hollow valves,...

C123S041390, C123S1960CP

Reexamination Certificate

active

11416292

ABSTRACT:
Device to feed cooling and lubricating fluid to cooling and lubricating nozzles for the pistons of an internal combustion engine, having at least one valve with an upstream channel and a downstream channel, said valve having a blocking element able to move in a compartment to block an opening of a seat. The valve responds to the pressure of the cooling fluid by opening when the upstream pressure is greater than a threshold pressure and closing when the upstream pressure is less than the threshold pressure. A means of calibrated leakage connects the upstream channel to the downstream channel in parallel with the zone of closure of the valve.

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Republique Francaise INPI Search Report; Mar. 17, 2006.

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