Method of controlling electronic control system fuel injection in internal combustion engine

Abstract

Abstract PURPOSE:To improve restarting property while improving stability in idling by detecting fuel temperature of an electronic control system fuel injector and elongate fuel injection time for correcting increment when said temperature is too high. CONSTITUTION:Increment ratio is used as correction value for a predetermined basic injection amount on the basis of intake amount Q or intake pressure and rotational frequency N of an engine. A fuel temperature sensor 4 using a thermistor reduces the input voltage to a contrlling circuit 5 as fuel temperature theta rises and supplies this voltage to the input of ROM 55 as address value through AD converter 54 to generate the output of increment ratio K for the fuel temperature. This output K is DA converted and added to the signals of post-starting increment ks, increment ka in acceleration and power increment kp by a current adder 512 to correct the basic injection time of a main controlling circuit 51. Thus, mixture having proper air fuel ratio under high temperature condition can be formed to improve restarting property while stabilizing idling.

Inventors

• 👤 Hisashi Kawai
• 👤 寿 河合
• 👤 Toshikazu Ina
• 👤 伊奈　敏和
• 👤 Toshihiko Ito
• 👤 猪頭　敏彦
• 👤 Takeshi Nomura
• 👤 健 野村
• 👤 Masaichi Yoshida
• 👤 政一 吉田
• 👤 Takao Komoda
• 👤 孝夫 菰田
• 👤 Makio Hamanishi
• 👤 浜西　万亀夫

Bibliographic Details