Hardware Design and Development of Engine Control Unit for Four Cylinder Engine

In automotive area use of electronic devices has been increased on a large scale and a control unit is very important for greater engine efficiency. This paper describes design of an Engine Control Unit developed for fuel injection and spark ignition control compatible with 4 cylinder engines. Engine control unit manipulates the fuel injection and spark ignition timing correctly in internal combustion engine; so that it improves drivability and fuel consumption can get reduced. This paper presents an automotive engine control unit development. The aim of the proposed system is to replace the Engine Control Units present in the cars with a fully programmable, low cost Engine Control Unit based on a standard electronic circuit. It is based on a s9keaz128 controller that can be mass produced and used in many of the on board systems present in the car. This Engine Control Unit makes use of a set of sensors for getting proper inputs and generates appropriate decision to drive the actuators in the car. In the proposed system a two layered Printed Circuit Board for Engine Control Unit is designed on the basis of Electromagnetic Compatibility standards.