Dissertation/Thesis Abstract

Optimierungsstrategien in der modellbasierten Dieselmotorenentwicklung
by Neßler, Adrian, Ph.D., Technische Universitaet Berlin (Germany), 2015, 166; 10718170
Abstract (Summary)

Modern diesel engines are controlled via maps, which have to be calibrated using measurements from an engine test bench. The maps have to fulfil various soft and hard constraints like smoothness and drivability. This thesis introduces in the state of the art of the map optimization at first. Following two criteria for smooth and driveable calibrated engine maps are defined mathematically. These criteria are verified and quantified with several concrete examples. Furthermore several non-linear optimization algorithms are presented. They are applied and evaluated in global map optimizations, in which optimization and smoothing are combined in one step, together with these criteria. Finally the optimization result is verified in an engine test bench measurement and in a vehicle test. The presented methodology can improve the map calibration, which has consisted of several iterations and has contained constraints that are difficult to describe, and can make it more systematically.

Indexing (document details)
Advisor: Gühmann, Clemens, Rottengruber, Herrmann, Ihme-Schramm, Hanno
School: Technische Universitaet Berlin (Germany)
School Location: Germany
Source: DAI-C 81/1(E), Dissertation Abstracts International
Subjects: Electrical engineering, Automotive engineering
Keywords: Optimisation strategies, Model-based diesel engine development
Publication Number: 10718170
ISBN: 9781392605523
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