| 摘要 |
PURPOSE:To improve the durability of an engine by alternately changing an operation cylinder and a repose cylinder, thus uniformalizing the abrasion of each cylinder, in the partial cylinder operation of a cylinder quantity controlled engine. CONSTITUTION:Fuel is supplied into the first-third cylinders 61-63 and the fourth-sixth cylinders 64-66 of an engine 1 from fuel injection pumps 7 and 8. Two solenoid valves 12 and 13 are installed between the fuel feeding pumps 10 and 11 connected to a fuel tank 9 and the fuel injection pumps 7 and 8, and controlled by the signal supplied from a controller 14 through timers 15 and 16. The controller 14 operates the cylinder groups 61-63 and 64-66 alternately by inputting a signal from a torque detector 5 and sending signals into the timers 15 and 16 alternately when the torque is below a prescribed value. Therefore, even in case of the partial cylinder operation, each cylinder can be operated with a uniform rate, and the durability of the engine can be improved.
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