| 摘要 |
PURPOSE:To dispense with any installation of an exclusive oil tank for a fuel-injection lubricating system and an oil feed pump either as well as to simplify the fuel-injection pump lubricating system in structure, by connecting the fuel-injection lubricating system to a fuel injection valve cooling oil system. CONSTITUTION:Turbine oil pumped up by a oil feed pump 7 from an oil tank 5 via a filter 6 is fed to an inlet end part of a cooling oil main pipe 10 via a heater 8 and a joint 9. A pressure-regulating valve 23 reduces the amount of turbine oil flowing in a lubricating main pipe 16 so as to make the more upstream side than the valve keep in a high pressure of 6-7kg or so, while it makes the flow rate into a larger on so as to cause the more downstream side to keep up a lower pressure of 2kg/cm<2>, respectively. The turbine oil inside the lubricating main pipe 12 is fed to the inside of each fuel-injection pump 2 via each branch pipe 20 and lubricates all sliding surface parts of a plunger inside the fuel-injection pump 2. |
