Fuel pump control device for engine

Abstract

Abstract PURPOSE:To maintain the operating performance of the engine in good condition even if the irregutarity in the characteristics of the pump occurs occasionally by a method wherein the delivery amount of the fuel pump is controlled in accordance with the load condition of the engine and a correcting control is effected so as to keep the amount of fuel, flowing through a return path, in constant. CONSTITUTION:A control circuit 18 controls the delivery amount of the fuel pump 7 so as to obtain a supplying amount exceeding the consuming amount of the engine by a predetermined amount in accordance with the load condition of the engine corresponding to the suction air amount from an airflow meter 16. The circuit 18 controls also the delivery amount so that the flow amount of the fuel passing through the return path 10, which is detected by a flow amount detecting means 12, is corrected into a constant value. According to this method, the delivery amount of the pump may be secured even if there is a change in the performance of the pump due to the deterioration with age or the irregularity the fuel pump.

Inventors

• 👤 Asao Taara
• 👤 田新　朝雄
• 👤 Haruo Okimoto
• 👤 沖本　晴男
• 👤 Masami Nakao
• 👤 中尾　正美

Bibliographic Details