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This paper describes the main strategies of the advanced Motronic MED7 engine management system for gasoline direct injection. This concept supports all required operation modes e.g. stratified, homogeneous lean and semi stratified to meet the highest fuel savings provided by the customers GDI combustion concept. Coordinated with Bosch GDI-components this system offers the highest performance for the future emission standards ULEV, EUIII and EUIV and meets all EOBD-requirements. The main structure of this system is based on the engine torque and is coordinating all activities via torque and efficiencies. The different operating modes are coordinated by a special dynamic mode manager, which is able to select the optimal operating mode under all conditions. The aftertreatment concept is based on an exhaust catalyst system comprising a fast heated pre-catalyst for early HC-reduction and a main catalyst with a NOx-adsorber anda TWC.

A Traction Control (TC) system was developed for a Formula 1 racing car using PID closed-loop feedback control of available engine power using a sophisticated fuel cutoff algorithm. Slip events were identified from 4 wheel speed data as well as driver cockpit-selectable input. This paper deals with both theoretical system design and algorithm development during the 1993 F1 season. In addition, development of a unique, G. P. start-only feature is discussed. Results indicate the existence of a minimum slip level, below which vehicle performance is impaired even though near-perfect slip reduction is achieved. Mathematical representation of the quantity of slip as a velocity delta is also important to ensure uniform system response in the face of changing track surface conditions.