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Abstract



A Real-Time Platform for Spark Advance Control


Keywords: In-cylinder pressure, ionization current, peak pressure position With the aim at spark advance control, a method for estimating the peak pressure position (PPP) from the ionization current has previously been developed and off-line validated. To implement the concept on an engine a real-time platform is needed. A hardware platform, that consists of a PC, an electronic engine control unit (ECU), and a synchronization circuit, is described. The platform synchronizes the data acquisition with the engine and the functionality is validated. Also a refined interpretation algorithm for estimating the PPP is described and validated to give a good estimate. The algorithm is suitable for implementation on the described real-time platform.

Lars Eriksson

1997

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