Embedded software for new engine controller
Abstract
This thesis describes software development for and testing of a new
prototyping system for engine control units used at DaimlerChrysler.
The system uses advanced new hardware to implement the engine
controller. The purpose of the new hardware is to reduce the cost for
the development of new engine control units without sacrificing
performance. This is achieved by using hardware designed specifically
for engine control. With the help of advanced software tools it should
also be possible for people without detailed knowledge about the
hardware or programming to work with the system during development.
The development of drivers for the hardware and a communication
protocol to allow communication between the ECU and external units is
presented. An application to allow engineers to perform measurements
and calibrations during the development of the engine controller is also
assembled and tested. It should be possible for people without knowledge
about programming the system to use and alter this application.
The testing shows that the current system is functioning satisfactory,
but it is also concluded that modifications might have to be made in the
future when the engine controller is expanded to perform more functions.
It is also concluded that some modifications to the software could be
made to increase the performance of the system. It is believed that the
described development system will be very powerful once it has matured.
Johan Källström
2001
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