| 摘要 |
PROBLEM TO BE SOLVED: To provide an accumulating fuel injection device which can safely run a vehicle for a given time without rapid stop even if a non-force feed condition occurs in a high pressure feed pump, securing a safe measurement for the non-force feed condition. SOLUTION: Fuel pressurized with a low pressure feed pump 9 is supplied to an intermediate pressure feed pump 7A through a low pressure fuel feed piping 40, and fuel pressurized with the intermediate pressure feed pump 7A is supplied to a high pressure feed pump 7 through an intermediate pressure fuel feed piping 37. The fuel in the low pressure fuel feed piping 40 is set to a first control pressure lower than the minimum injection pressure by a first pressure control valve 82 provided in the low pressure fuel return piping 41. The pressure in the intermediate pressure fuel feed piping 37 in a non-force feed time is set to a second control pressure higher than the minimum injection pressure by a second pressure control valve 83 provided for a bypass piping 42. |
