| 摘要 |
PURPOSE:To suppress vibration by installing counterweights and balancer weights at least at two positions on a crankshaft and a balancer shaft so that the coupled force vectors having a specific value are generated and offsetting the vectors in the positive and negative directions of the primary balanced inertial coupled forces. CONSTITUTION:In a V-type 6-cylinder engine which has the cylinder arrangement having an arbitrary nipping angle and in which the right and left banks are constituted of three cylinders in series which are ignited in equal intervals, counter weights 3a and 3b are installed at least at two positions onto a crankshaft 1 so that the coupled force vectors in the reverse direction to the direction of revolution among the primary inertia coupled forces applied onto the crankshaft 1 are generated. Further, a balancer shaft 5 is inter-locked with the crankshaft 1 through a transmission system 4, and said shaft 5 is revolved in the reverse direction at the equal revolution speed to the crankshaft 1, and balancer weights 6a and 6b are installed at least at two positions on the balancer shaft 5 so that the coupled vectors in the opposite direction to the reverse revolution direction among the above-described primary inertia coupled forces are generated. |
