Lubrication system for the piston ring and cylinder liner of an internal combustion engine

A system for providing lubricant to a cylinder wall of an internal combustion engine, comprising:

• a piston configured to reciprocate within the cylinder wall;
• an oil injector provided in the piston, the oil injector comprising:
• a passage defined in the piston and substantially parallel to a central axis of the cylinder wall;
• an inlet port defined in an outer wall of the piston and fluidly coupled to the passage;
• an outlet port defined in the outer wall of the piston and fluidly coupled to the passage wherein the outlet port is located closer to an upper face of the piston than the inlet port;
• a reservoir in fluidic communication with the passage wherein the reservoir is located farther away from the upper face of the piston than the outlet port;
• and
• an annular oil distribution groove defined in and extending about the outer wall of the piston, wherein the annular oil distribution groove is coincident with the outlet port of the oil injector.

A system for providing lubricant to a cylinder wall of a cylinder in an internal combustion engine, comprising:

• a piston configured to reciprocate within the cylinder;
• an inlet port defined in an outer wall of the piston;
• a passage defined in the piston, the passage having a first end in direct fluid communication with the inlet port and a second end extending away from the first end toward an upper face of the piston;
• an outlet port defined in the outer wall of the piston and in direct fluid communication with the second end of the passage;
• an oil reservoir formed in the piston, the oil reservoir in direct fluid communication with the first end of the passage;
• and
• lubricating oil between a portion of the outer wall of the piston and the cylinder wall when the piston is near a bottom dead center position within the cylinder;
• wherein the oil reservoir receives the lubricating oil from between the portion of the outer wall of the piston and the cylinder wall via the inlet port when the piston is near the bottom dead center position, and wherein oil in the oil reservoir reacts to deceleration forces of the piston as the piston travels to and reaches a top dead center position within the cylinder to directly exit the outlet port.