FUEL INJECTION QUANTITY CONTROLLER FOR DIESEL ENGINE

摘要

PURPOSE:To prevent excessive/insufficient fuel injection quantity upon acceleration/deceleration by obtaining fuel injection through comparision between basic injection of Diesel engine operated in accordance to rotation and accelerator opening and upper limit corrected in accordance to variation of suction pressure. CONSTITUTION:Fuel injection quantity control of Diesel engine will move a plunger 228 through duty ratio control of spill control solenoid 226 in fuel injection pump 20 to move a spill ring 222. The spill control solenoid 226 is controlled by a control circuit 30 to be provided with detected levels from accelerator opening sensor 32, suction pressure sensor 104, and rotary angle sensor 234. The control circuit 30 will operate basic injection quantity corresponding to engine speed and accelerator opening and to obtain actual fuel injection quantity through comparison between the basic injection quantity and its upper limit obtained in accordance with suction pressure and its variation.