Fuel injection control method for cylinder injection type internal combustion engine and system for carrying out the same

A fuel injection control system for a cylinder injection type internal combustion engine, comprising:

• air flow sensor means for detecting at least either one of an intake air flow fed to said internal combustion engine and a value corresponding to said intake air flow;
• crank angle sensor means for detecting a rotation speed of said internal combustion engine and a crank angle thereof,
• fuel injector means for injecting fuel directly into individual cylinders of said internal combustion engine;
• and
• an engine control unit for controlling said fuel injector means, said engine control unit including
• arithmetic means for determining on the basis of information supplied from said air flow sensor means and said crank angle sensor means a quantity of fuel to be injected directly in each of said cylinders of said internal combustion engine and
• control means for controlling said fuel injector means so that the quantity of fuel determined by said arithmetic means is injected directly into said individual cylinders of said internal combustion engine,
• wherein fuel injection is carried out by said fuel injector means in a suction stroke of said engine immediately before operation of said internal combustion engine is stopped.