Fuel supply device of internal combustion engine

Abstract

Abstract PURPOSE:To make a fuel pump with small size, to reduce power consumption and to enhance the rate of fuel consumption by controlling the fuel injection valve with a control device by the use of a fuel pump which shall always keep constant the relation of the pressure of fuel supplied with the rate of flow of the fuel. CONSTITUTION:A fuel pump 2, which is equipped with sensors for the rate of flow of the fuel supplied and the supply pressure, is furnished to always keep constant the relation the rate of flow with the supply pressure. Further shall be furnished a sensor to sense the operating condition of the fuel pump 2, a sensor to sense the operating condition of the internal combustion engine, and a control device 8 to perform inputting of signals obtained by these sensors, and then the pulse width in fuel injection from the fuel injection valve 6 and the injecting timings shall be controlled using this control device 8. In the range of engine operation with high revolutions and high load, for example, the injection pulse width of the fuel injection valve 6 is widened to use the low-pressure, large rate-of-flow range of the fuel pump 2 while, in the range with low revolutions and low load, the pulse width in fuel injection is narrowed to use the high- pressure, small rate-of-flow range of fuel pump 2.

Inventors

• 👤 Hiromichi Miwa
• 👤 博通 三輪
• 👤 Masaaki Saito
• 👤 斉藤　正昭
• 👤 Kenji Masaki
• 👤 正木　健二

Bibliographic Details