| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-mode VCT system capable of being kept at any position between the most front position and the most back position. SOLUTION: This timing device comprises advance and retard chambers 24A and 24R, a pulse driving means, and a pressure driving means for interconnecting them. The pulse driving means comprises retard pulse means 50, 44, and 56 for conveying fluid from the chamber 24A to the chamber 24R under pulsation, and advance pulse means 52, 46, and 54 for conveying fluid from the chamber 24R to the chamber 24A under pulsation. The pressure driving means comprises retard pressure supplying means 34, 46, and 52 for supplying fluid to the chamber 24R, retard pressure discharging means 50, 44, 64, 180, and 32 for discharging fluid from the chamber 24A, advance pressure supplying means 34, 44, and 50 for supplying fluid to the chamber 24A, and advance pressure discharging means 52, 46, 66, 180, and 32 for discharging fluid from the chamber 24R. |
