The complexity of modern powertrains with their embedded control systems has increased in the last years, due to the tightening of emission regulations. Therefore, virtual calibration and Model-in-the-Loop testing can provide a great support for their preliminary assessment, in order to reduce the experimental effort. To this purpose, highly accurate engine models are required, not only at steady-state conditions, but also in transient operation. The present paper addresses the assessment and validation of a fast-running 1-D model of a diesel engine for heavy-duty applications, focussing on the transient response. In particular, a baseline model with satisfactory accuracy at steady-state operation, but not in transient conditions, is analysed and assessed with the aim of reproducing the true dynamic response of the real engine installed at the test bench, as well as the behaviour of the embedded air-path controllers. The entire methodology for the model assessment is presented step by step, and common challenges and potential pitfalls that researchers may encounter when calibrating simulation models are discussed. Finally, the impact of the test bench layout on the engine dynamic response is also evaluated and discussed.

Assessment of a 1-D diesel engine model for accurate response in transient simulations / Finesso, R.; Marello, O.; Ventura, L.. - In: INTERNATIONAL JOURNAL OF ENGINE RESEARCH. - ISSN 1468-0874. - STAMPA. - 25:10(2024), pp. 1879-1897. [10.1177/14680874241256024]

Assessment of a 1-D diesel engine model for accurate response in transient simulations

Finesso R.;Marello O.;Ventura L.
2024

Abstract

The complexity of modern powertrains with their embedded control systems has increased in the last years, due to the tightening of emission regulations. Therefore, virtual calibration and Model-in-the-Loop testing can provide a great support for their preliminary assessment, in order to reduce the experimental effort. To this purpose, highly accurate engine models are required, not only at steady-state conditions, but also in transient operation. The present paper addresses the assessment and validation of a fast-running 1-D model of a diesel engine for heavy-duty applications, focussing on the transient response. In particular, a baseline model with satisfactory accuracy at steady-state operation, but not in transient conditions, is analysed and assessed with the aim of reproducing the true dynamic response of the real engine installed at the test bench, as well as the behaviour of the embedded air-path controllers. The entire methodology for the model assessment is presented step by step, and common challenges and potential pitfalls that researchers may encounter when calibrating simulation models are discussed. Finally, the impact of the test bench layout on the engine dynamic response is also evaluated and discussed.
File in questo prodotto:
File Dimensione Formato  
PostPrint.pdf

accesso aperto

Descrizione: Author's accepted manuscript
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 3.52 MB
Formato Adobe PDF
3.52 MB Adobe PDF Visualizza/Apri
2024 - VersioneEditoriale.pdf

non disponibili

Descrizione: Versoine Editoriale
Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 9.39 MB
Formato Adobe PDF
9.39 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2992581