Hydraulic valve drive unit as well as engine and vehicle including the same

摘要

PROBLEM TO BE SOLVED: To provide a small size hydraulic valve drive device capable of performing good start, an engine and a vehicle including the same.;SOLUTION: A starter motor 2 is connected to a hydraulic pump 1 via a transmission mechanism 3, and is connected to a crank 15 via a transmission mechanism 5. The crank 15 is connected to the hydraulic pump 1 via a transmission mechanism 6. Rotation force of the starter motor 2 is transmitted to the hydraulic pump 1 via the transmission mechanism 3 (transmission route A1) on one end and is transmitted to the hydraulic pump 1 via the transmission mechanism 5, the crank 15 and the transmission mechanism 6 (transmission route B1) on another end. Reduction ratio of the transmission route A1 is established smaller than reduction ratio of the transmission route B1.;COPYRIGHT: (C)2007,JPO&INPIT