Fuel injection system for multiple cylinder two-cycle engine

摘要

A fuel injection system for a multiple cylinder two-stroke cycle engine having a plurality of cylinders provided with intake manifolds, respectively, comprises a plurality of fuel injectors each operatively connected to its respective intake manifold, a controlling unit operatively connected to the fuel injectors for controlling fuel injection of the fuel injectors, and a unit operatively connected to the fuel injection controlling unit for detecting the revolution number or speed of the engine. The fuel injection controlling unit includes a micro computer for carrying out calculations in response to information from the engine revolution operation detecting unit so as to inject the fuel a plurality of times with equal angular intervals defined therebetween during one revolution of the engine, or the crank shaft, during the neutral and low revolution periods of the engine. The fuel injection system may further comprise an ignition timing controlling unit including a pick-up signal processing circuit through which the engine revolution operation detecting unit is connected to the micro computer of the fuel injection controlling unit so as to transfer the information representing the engine revolution number or speed from the engine revolution operation detecting unit to the fuel injection controlling unit.