Fuel injection controlling apparatus for internal- combustion engine

Abstract

Abstract PURPOSE:To enable to supply fuel correctly to a plurality of cylinders, to purify the exhaust emission of an engine and to improve the starting performance of engine, by controlling the sequence and the timing of fuel injection of fue injection valves at the time of starting the engine on the basis of the positions where the cylinders are stopped. CONSTITUTION:When an ignition switch 30 is energized, a counter 29 furnishes a cylinder discriminating signal (c) and a reference angle signal (b) to a microcomputor 28. In this state, if the ignition switch 30 is turned OFF, fuel injection is stopped and operation of a control circuit 27 is continued for a predetermined while. When an engine is stopped completely, the value K based on the last signal (b) furnished to the micro-computor 28 is stored in a memory 31. Subsequently when the ignition switch 30 is turned ON, the engine starts rotation and fuel is injected rom fuel injection valves 4-7, 7-9 according to the sequence and the injection patter of the turning angle determined by the signal K stored in the memory 1. With such an arrangement, it is enabled to supply fuel correctly to a plurality of cylinders, to purify the exhaust emission of an engine and to improve the starting performance of the engine.

Inventors

• 👤 Shinsuke Nakazawa
• 👤 中澤　慎介

Bibliographic Details