ENGINE SLAP SOUND SUPPRESSING DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce slap sound without using a strut piston. SOLUTION: A through hole 12a is formed in the lower section of the peripheral wall of a piston 12 on the same side as the lower end of a connecting rod when the connecting rod is moved upward in relation to the datum face including the center line P of the piston 12 reciprocating in a cylinder 11 and the axis line Q of the piston 12 connecting the upper end of the connecting rod to the piston 12. This through hole 12a opens facing the inner peripheral face of the cylinder 11 and is supplied with oil by an oil supply means 17. The space between the inner peripheral face of the cylinder 11 and the outer peripheral face of the piston 12 is charged with the oil supplied to the through hole 12a by the oil supply means 17.