Elektrischer Heizkatalysator zur Optimierung der Emissionen von Mildhybridsystemen

Schatz, Axel; Knorr, Thomas; Ellmer, Dietmar

doi:10.1007/s35146-015-0175-9

Cited by 6 publications

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“…Strategies with additional hardware components that enable a fast heat-up process, such as secondary air pumps [5][6][7] or electric heaters [8,9]. 2.…”

Section: Introductionmentioning

confidence: 99%

Optimal Cold-Start Control of a Gasoline Engine

2017

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This article analyzes the influence of the ignition retardation on the fuel consumption, the cumulative tailpipe hydrocarbon emissions, and the temperature inside the three-way catalytic converter in a gasoline direct injection engine operated under idling conditions. A dedicated cylinder-individual, model-based, multivariable controller was used in experiments in order to isolate the effect of the ignition retardation on the hydrocarbon emissions as much as possible. An optimal control problem for a gasoline engine at a cold-start is formulated, which is used to interpret the experimental data obtained. The corresponding goal is to minimize the fuel consumption during an initial idling phase of a fixed duration while guaranteeing that the three-way catalytic converter reaches a sufficiently high final temperature and at the same time making sure that the cumulative hydrocarbon emissions stay below a given limit. The experimental data indicates that the engine should be operated with maximum ignition retardation in order to reach any temperature inside the three-way catalytic converter as quickly as possible concurrently with minimum tailpipe emissions and with the minimum possible fuel consumption.

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“…Strategies with additional hardware components that enable a fast heat-up process, such as secondary air pumps [5][6][7] or electric heaters [8,9]. 2.…”

Section: Introductionmentioning

confidence: 99%