| 摘要 |
A fuel pressurization conveying system is provided with the following components: a pressure accumulation part (60) for performing pressure storage on the fuel; a cylinder (59) which is internally provided with a pressure chamber (53); a plunger (51) which performs movement in a pressurization direction in the cylinder body, namely pressurization movement, and generates volume change in the pressure chamber through the pressurization movement, thereby performing pressurization conveying on the fuel to the pressure accumulation part; and a control part (70) which controls pressurization conveying amount of the fuel to the pressure accumulation part. The control part is provided with a pressurization conveying amount calculation part which estimates the leakage amount of the fuel that leaks through a clearance between an inner circumferential surface of the pressure chamber and an outer peripheral surface of the plunger, and calculates the pressurization conveying amount through the calculated leakage amount and the volume change amount in the pressure chamber which corresponds with the stroke of the plunger in pressurization movement. |
