| 摘要 |
PROBLEM TO BE SOLVED: To reduce vibration of an internal combustion engine, without taking a structure for sealing a viscous fluid in a tie bolt chamber formed between the outer periphery of a tie bolt and the inner periphery of a tie bolt hole.SOLUTION: A vibration reducing device of an internal combustion engine includes a weight 23 for reciprocating in the vertical direction along a tie bolt 6 while contacting with the tie bolt 6 for fastening a cylinder jacket, a frame and a baseplate in the vertical direction, a weight adjusting mechanism 22 for reciprocating the weight 23 in the vertical direction along the tie bolt 6, an accelerometer installed on the tie bolt 6, and a controller for calculating a position of the weight 23 suitable for reducing vibration of the internal combustion engine when acceleration sent from the accelerometer exceeds acceleration corresponding to a predetermined vibration threshold value by monitoring the acceleration sent from the accelerometer in real time and outputting a control signal to the weight adjusting mechanism 22 based on a calculated calculation result, and the weight adjusting mechanism 22 reciprocates the weight 23 in the vertical direction along the tie bolt 6 based on the control signal from the controller. |
