INJECTION TIMING CONTROL DEVICE OF ELECTRONIC-CONTROLLED FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To simplify a construction of a control device by selecting a start timing of a fuel injection pulse from several crank angle positions. CONSTITUTION:A basic width of an injection pulse is obtained by a means to compute the basic width of the fuel injection pulse based on signals of an air flowmeter 3 and rotational angle sensors 9 and 11. An injection pulse width is obtained by correcting the basic width of the injection pulse based on signals from a cooling water temperature sensor 6 and a throttle sensor 5. A start timing of a target injection pulse is obtained by a computing means of the start timing of the target injection pulse based on the injection pulse width and an engine rotating number and an area to start injection is obtained by judging in which areas divided from several crank angle positions through a judging means it belongs to for starting injection. This construction permits to simplify the construction of the control device.