| 摘要 |
PURPOSE:To reduce the dimension of an engine room by allowing the liquid with a pressure corresponding to the number of engine revolution to be introduced into the liquid chamber of a mounting device. CONSTITUTION:When a gear is set in the first or the second speed position, a gear position sensor 43 detects said position, and a driving apparatus 44 allows a discharge pipe 41 and the oil pump 37 which delivers the pressurized oil corresponding to the number of engine revolution to communicate to a flow passage 35 in the first position of a solenoid valve 36, and the oil is introduced into the bellows 34 in a liquid chamber 25. Accordingly, the internal pressure in the liquid chamber 25 increases in proportion to the number of engine revolution. Therefore, the spring constant of a mounting device increases in response to the number of engine revolution, and the spring is stiffened. Thus, the amount of deformation of the mounting device can be reduced, and the rolling angle of a power unit can be suppressed to a small value. As the oil pressure characteristic accords with the engine oil feeding characteristic, an engine oil pump can be used in this case. With such a constitution, the space for engine mounting can be reduced, and the dimension of the engine room can be reduced. |
