Effiziente RDE-Entwicklung mittels Engine-in-the-Loop-Prüfstand

Gerstenberg, Jan; Schyr, Christian; Sterzing-Oppel, Sandra; Trenkle, Dennis

doi:10.1007/s35146-017-0042-y

Cited by 8 publications

(3 citation statements)

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“…These small deviations can lead to a completely different trend in the pollutants emitted. 47,49 Especially at long, constant acceleration intensities, a sinusoidal pedal movement of the driver is observed when trying to “shimmy along the line.” For better reproduction, the effect of an automatic, robot-assisted driver 44 must be investigated during an emission test.…”

Section: Validation Of the Methodology By Implementation Of The Test mentioning

confidence: 99%

“…Furthermore, cyber-physical hardware-in-the-loop (HiL) test setups—especially engine-in-the-loop (EiL) test benches—can be used, to simulate the vehicle behavior in a real-world environment on real routes. 23,43–45 Performing these tests on the engine test bench or emission chassis dynamometer can lead to an estimation of what to expect in a RDE test setup, while being able to obtain reproducible data. In particular, EiL setups allow to increase the amount of achievable tests, as the duration to soak and condition the test vehicle can be reduced and components can be exchanged quicker than in a real vehicle configuration.…”

Section: Current and Future Challenges To Comply With The Rde Requirementioning

confidence: 99%

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Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7

Claßen

Pischinger

Krysmon

et al. 2020

International Journal of Engine Research

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The progression of emission legislation has intensified the efforts of the automotive industry to develop improved exhaust gas after-treatment systems. The requirement to fulfill Euro 6d-TEMP in real-world driving scenarios, the already significant calibration effort for Euro 6d and the Euro 7 emission standards in discussion have significantly increased the work load for calibration engineers and the requirements for testing resources. Many original equipment manufacturers are implementing taskforces in order not to have to discard the planned start of production for their products, and some are even already forced to reduce their product portfolio. This is due to the diverse testing matrix required to cover all possible real driving emissions test scenarios. One big challenge is the extension and possible variation of boundary conditions regarding ambient temperatures, traffic conditions, road gradients and other varying driving resistances. Moreover, the test duration can cause considerable differences in the measured emissions, even if the same route is driven repeatedly. Addressing these challenges makes the application of a dedicated, event-targeted emission calibration mandatory. Since only a few sequences of the time-consuming road tests are relevant for improving the emission calibration, the methodology presented in this article focuses on the exact reproduction of these emission events on an emission chassis dynamometer with the aim of implementing calibratable solutions for these events. This is done using a real driving emission-cycle-generator which creates real driving emission compliant severe test scenarios and which focuses on the statistical relevance related to the typical product specific operation. The underlying generation process accesses a large database with real driving emission measurement results focusing on vehicle- or vehicle-group-specific challenges, using statistical approaches. It will be demonstrated how this procedure reduces test time and how it helps to tackle the substantial real driving emission work-load, while providing a dependable base to achieve real driving emission legislation compliance.

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Section: Validation Of the Methodology By Implementation Of The Test mentioning

confidence: 99%

Section: Current and Future Challenges To Comply With The Rde Requirementioning

confidence: 99%

Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7

Claßen

Pischinger

Krysmon

et al. 2020

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…Therefore, the individual components are driven separately on component test benches. [8][9][10] The individual components can be virtually connected to each other by coupling the test benches within a simulation framework. Thereby, the system behavior can be investigated and tested under realistic boundary conditions, as already shown in earlier works.…”

Section: Introductionmentioning

confidence: 99%

A simulation-based case study for powertrain efficiency improvement by automated driving functions

Plum

Wegener

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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An increasing level of driving automation and a successive electrification of modern powertrains enable a higher degree of freedom to improve vehicle fuel efficiency and reduce pollutant emissions. Currently, both domains themselves, driving automation as well as powertrain electrification, face the challenge of a rising development complexity with extensive use of virtual testing environments. However, state-of-the-art virtual testing environments typically strictly focus on just one domain and neglect the other. This paper shows the results of a simulation-based case study considering both domains simultaneously. The influence of energy saving automated functionalities on a conventional, a hybrid, and a pure electric powertrain is investigated for a carefully selected inner-city driving scenario. The vehicle simulation models for the different powertrain configurations are calibrated using test bench results and vehicle measurements. A model predictive acceleration controller is developed for realizing the speed optimization function. By considering traffic conditions such as traffic light schedules and a preceding vehicle as the boundary conditions, unnecessary accelerations and decelerations are avoided to reduce the energy demand. The case study is realized by applying this function to the three powertrains variants. As a final result, a clear difference in energy demand is observed: the hybrid powertrain benefits the most in terms of energy demand reduction in the given use case. The results clearly underscore that in future vehicle development programs, the powertrain and the real-world driving functionalities have to be optimized simultaneously to minimize the energy demand during everyday vehicle operation.

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Der Antriebsprüfstand als Plattform für die RDE-Emissionierung

Dietrich

Rupfle

2020

Proceedings

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Effiziente RDE-Entwicklung mittels Engine-in-the-Loop-Prüfstand

Cited by 8 publications

References 0 publications

Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7

Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7

A simulation-based case study for powertrain efficiency improvement by automated driving functions

Der Antriebsprüfstand als Plattform für die RDE-Emissionierung

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