There are plenty of requirements to an engine management system, which are increasing the complexity. For example the new EURO-5-Standard, which will be become effective in the year 2009 will allow 20% less emissions. This will be significantly tightened with the upcoming EURO-6-standard in 2014 which will increase the requirements to the engine management system drastically, especially to keep the CO2 limits. This can be only reached by a tight control of the motor parameters (e.g. timing of the ignition and the injection or the adjustment of the valve position). Algorithms for the calculation of such parameters are requiring a high computing power. In today's cars this computation power is distributed on up to 80 Electronic Control Units [ECU], which are connected to each other via local networks. Cost optimized partitioning splits the system into independent domains (Powertrain, Safety, Chassis), which are connected in-between by bus systems with a high band width (e.g. High Speed CAN, FLEXRAY). Within such domains, the computing power is not only done by high performing micro controllers [MC], but also by smart sensors or actuators and actuator drivers. For minimisation of the local communication within the domain, standard communication interfaces have been developed for specific use cases. The Micro Second Bus [MSB] is one of such kind of use-case optimized serial Interfaces.
Efficient, real time ECU on-board communication
Wirksame echtzeitfähige On-Board-Kommunikation der Fahrzeugsteuergeräte
2009
11 Seiten, 6 Bilder, 2 Quellen
Conference paper
English
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