INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Mar 21, 2019
app pub date -
Sep 7, 2018
filing date -
Sep 7, 2018
priority date (Note) -
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Abstract
To provide an internal combustion engine that can inject lubricating oil to both of the first region in the skirt of the piston and the second region outside the skirt with fewer nozzles. An internal combustion engine including: a piston configured to reciprocate in a cylinder bore; and an oil injector configured to inject lubricating oil to the piston. The piston includes pin bosses, skirts, side walls, and a piston inner region that is surrounded by respective inner surfaces of the pin bosses, skirts, and side walls. The oil injector is configured to inject the lubricating oil to the pair of pin bosses when the piston is at one of a top dead center and a bottom dead center, and inject the lubricating oil to the piston inner region when the piston is at another of the top dead center and the bottom dead center.
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