Internal-combustion engines – Cooling – With jacketed head and/or cylinder
Patent
1994-07-25
1995-09-26
Kamen, Noah P.
Internal-combustion engines
Cooling
With jacketed head and/or cylinder
123 4128, 123 4177, F01P 302
Patent
active
054535735
ABSTRACT:
During operation of an internal combustion engine, structures adjacent the piston top ring turn around position and the exhaust port are exposed to high temperatures. In order to improve cooling around these adjacent structures, the heat transfer coefficient must be increased. In this manner, energy around the top ring turn around position on the cylinder liner and around the exhaust seat can be transferred through a cooling liquid and away from the adjacent structures. The present invention enhances the cooling capability within an engine by utilizing a flow controlling device disposed between a cooling liquid inlet chamber and a cylinder liner. The flow controlling device has a plurality of orifices therein. A cooling liquid from a pressurized source is communicated to the inlet chamber and passes through the plurality of orifices to impinge a predetermined peripheral portion of the cylinder liner adjacent an exhaust port. Due to the small size of the orifices, the velocity of the cooling liquid is increased as it passes therethrough. The increased velocity of the cooling liquid and the subsequent impingement upon a required, selected portion of the cylinder liner increases the overall cooling effectiveness.
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Article "Deere Upgrades Engines For The Open Market" publ. Diesel Progress Engines & Drives, pp. 40-44.
Article "Forced Convection Jets of Air Impinging On A Surface", Genium Publishing, Jan. 1968, Section 503.6 pp. 1-8.
Caterpillar Inc.
Charlton Diana L.
Kamen Noah P.
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