PISTON OF INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To enable suppression of partial reduction of rigidity of a top land in the peripheral direction of a piston.SOLUTION: An internal combustion engine includes an injector 5 for directly injecting fuel into a cylinder. A piston 1 of the internal combustion engine forms four valve...

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Bibliographic Details
Main Author HATA YOSHIHARU
Format Patent
LanguageEnglish
Published 19.08.2013
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
COMBUSTION ENGINES
CYLINDERS
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To enable suppression of partial reduction of rigidity of a top land in the peripheral direction of a piston.SOLUTION: An internal combustion engine includes an injector 5 for directly injecting fuel into a cylinder. A piston 1 of the internal combustion engine forms four valve recesses on a top surface of the piston 1. A top ring groove for storing a top ring is formed on an outer peripheral surface 20 of the piston 1. A back clearance being a distance up to the outer peripheral surface 20 of the piston 1 from a bottom surface 22a of the top ring groove, is formed the smallest in a position corresponding to an intake side valve recess nearest to an nozzle hole 5a of the injector 5 among the four valve recesses.
Bibliography:Application Number: JP20120022201