F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 15/00 (2006.01) F01M 1/00 (2006.01) F01M 11/00 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2352074
To provide a method of lubricating a two-cycle internal combustion engine which includes a combustion chamber, a chamber portion, a communication passage for communicating the combustion chamber to the chamber portion, and a control valve for opening/closing the communication passage, wherein a high compression gas is charged in the chamber portion and an air-fuel mixture is injected from the chamber portion into the combustion chamber via the communication passage by means of the high compression gas stored in the chamber portion, which method is intended to improve the lubricating performance of a portion, near the opening of the communication passage, of the inner wall surface of a cylinder and a portion, facing to the opening of the communication passage, of the outer peripheral surface of a piston, from which lubricating oil is liable to be carried away by gasoline injected from the communication passage. [Solving Means] A lubricating oil supply hole is provided in the cylinder. The lubricating oil supply hole has a cylinder side opening positioned in the same direction as the direction in which a cylinder side opening of the communication passage is positioned, as seen from the center line of the cylinder. The cylinder side opening of the lubricating oil supply hole may be positioned under the cylinder side opening of the communication passage, or may be provided between the lower edge of the cylinder side opening of the communication passage and a position at which a piston ring of a piston is located when the piston is moved down to the bottom dead center.
Dennison Associates
Honda Giken Kogyo Kabushiki Kaisha (also Trading As Honda Motor Ltd .)
LandOfFree
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