Piston spray nozzle

Details Piston spray nozzle Piston spray nozzle

2005-11-28

2009-06-23

Cuff, Michael (Department: 3741)

Internal-combustion engines

Cooling

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

Reexamination Certificate

active

07549402

ABSTRACT:
The invention relates to a piston spray nozzle (12, 112) for cooling a piston (10) of a combustion engine by means of a liquid jet (20, 120) that is directed to a cooling chamber (14) of the piston (10). According to the invention, a member (16, 116) that has an approximately round cross-section and provides the discharged liquid jet (20,12) with a substantially tubular shape is disposed in the center of the discharge port (15, 115) of the piston spray nozzle (12, 112). The inventive piston spray nozzle delivers a directed, laminar liquid jet who shape remains essentially the same until the jet hits the cooling area (14).

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International Search Report.

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