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This paper describes a new approach for the calibration of engine management systems based on a newly developed calibration tool. This approach is based on the idea to design the calibration process of a certain calibration task by means of a computer based stateflow/workflow diagram. By means of library methods for certain calibration routines, the calibration engineer can design his calibration process in a Stateflow diagram and then transfer this function in an executable file, guiding and supporting the engineer for performing his task. Due to this approach a documentation of the calibration process, the performed calibration task and a guided and automated calibration process can be performed.

Under the persistent pressure to further reduce fuel consumption worldwide, it is necessary to advance the processes that influence the efficiency of gasoline engines. In doing so, harnessing the entire potential of fully variable mechanical valve trains will involve targeting efforts on optimizing all design parameters. A new type of valve timing system is used to portray thermodynamic and mechanical as well as electronic aspects of developing fully variable mechanical valve timing and lift systems