Lucas Micos design and manufacture a range of automotive electronic engine management systems (electronic control units) for both petrol and diesel engines. The electronic control units for petrol engines accept a range of analogue sensor inputs (usually about eight) and produce outputs to drive injectors and ignition timing. One such unit, the 468 ECU, is widely used on high performance cars for the racing world and was fitted to the winning cars in Group C2 endurance racing in 1985 and 1986. The 468 ECU performs high speed calculations on a number of primary inputs including engine rpm and pedal position, with secondary inputs used as modifiers. The fuel requirement for each cylinder is calculated every 2 ms with the injectors for each cylinder being driven sequentially for the required pulse width. The fuel for each cylinder is accurately controlled in this way thus developing greater power, improving economy and engine control. Although the data rates possible using this method are somewhat limited, by modifying the software in the ECU to use some form of event capture for example, the system does offer some very useful facilities. One of the main benefits is the low cost when compared to many other methods of data collection over radio.
Remote data collection from fast vehicles
Ferndatenerfassung von schnellen Kraftfahrzeugen
1987
3 Seiten
Conference paper
English
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