FUEL INJECTIN CONTROL DEVICE FOR TURBO-SUPERCHARGED DIESEL ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection control device for a turbo-supercharged Diesel engine preventing the reduction of the engine revolving speed at the time of a turn. SOLUTION: When an operator applies quick steering to turn a combine, a signal is outputted to an ECU 27 from a turn sensor 26, and the ECU 27 receiving this signal excites a three-way solenoid valve 24. The atmospheric port 24a of the three-way solenoid valve 24 is closed, the second control pipe 21 is communicated, the boost pressure is reduced to the set pressure of a pressure reducing valve 23, and it is guided into the atmospheric chamber 15 of a waste gate actuator 12. A waste gate valve 11 is not opened until the boost pressure becomes the fourth set pressure, and the boost pressure rises as compared with that at the time of a straight advance. The action quantity of a boost compensator 25 is increased as the boost pressure rises, and the fuel injection quantity is increased from the first stage maximum injection quantity to the second stage maximum injection quantity.