Technical Paper
A New Approach to Functional and Software Structure for Engine Management Systems - BOSCH ME7
1998-02-23
980801
This paper describes the new Engine Management System (EMS) ME7. Torque and A/F demands for modern EMS result from both, internal functions (i.e. engine start, idle speed control, catalyst heating) and external systems (i.e. driver's request, transmission or vehicle dynamic control). With ME7 these demands are processed to the optimized actions of the actuators by a centrally coordinated torque and A/F management. The design of the functions is physically based to provide optimum portability and minimum calibration time. Examples are given for the physical manifold pressure model and the cylinder charge control of ME7 with electronic throttle control. The real time operating system „ERCOS” and a layer based software architecture enable the implementation of these functions in a flexible family of products for current and future systems.