Early Stage Calibration of a Formula SAE Engine 1-D Fluid Dynamic Model with Limited Experimental Data

Ammendola, Francesco; Giardiello, Giovanni; Gimelli, Alfredo; Muccillo, Massimiliano; Riccio, Davide; Tufano, Francesco; Zeppa, Giuseppe

doi:10.1051/e3sconf/202019706014

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…This variable influences the ignition delay. Higher values shorten the delay, advancing the transition from laminar combustion to turbulent combustion [17]. The Taylor length scale multiplier (C TLS ) is used to scale the calculated value of the Taylor microscale length (λ) of turbulence.…”

Section: Spark-ignition Turbulent Flame Model (Siturb)mentioning

confidence: 99%

CAE Approach in Combustion Modeling on a Classic Internal Combustion Engine and Ignition Timing Modeling

Paraschiv¹,

Frățilă²

2023

Atlantis Highlights in Engineering

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The homologation process of the internal combustion engines (ICE) is becoming more difficult with the passing of time. Coupled with the need for massive investments in new technologies, such as hybrid or hydrogen powertrains or 100% electrical vehicles, the economy in the traditional automotive manufacturing is stretched to its limits. There is stringent need to limit as much as possible the development cost of the new ICEs set for the Euro7 emissions standards. The last 15 years have seen a giant leap forward in computer-aided design (CAD) and computer-aided engineering (CAE) in the imagining and validation of different structures. This software can now reproduce with outstanding precision the aeraulic phenomena in the air intake, in the combustion chamber and in the exhaust of ICEs. The aim of this paper is to present a general overview on system modeling in ICEs, with an emphasis on the use of predictive and non-predictive combustions models. Thus, a special attention was given to the SITurb predictive combustion method, which was employed to build a virtual engine. By modifying the models' parameters, the spark timing was corelated with the values issued from the engine test bench. Some of the tuning activities usually done on the engine test bench could be done on the SITurb model, with similar results to the tests done on physical test supports. Using this approach could lead to economic advantages, in terms of time and material resources employed in the development of the ICEs.

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Section: Spark-ignition Turbulent Flame Model (Siturb)mentioning

confidence: 99%

CAE Approach in Combustion Modeling on a Classic Internal Combustion Engine and Ignition Timing Modeling

Paraschiv¹,

Frățilă²

2023

Atlantis Highlights in Engineering

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1D and Map-Based Modeling Approaches for Railway Compression Ignition Engine in NRTC Application

et al. 2022

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Internal combustion engine-driven railway vehicles play an important role in the sector even today, due to the incomplete electrification of railway routes. However, stringent COP26 environmental rules are driving manufacturers and the scientific community to study more complex or alternative propulsion systems. Therefore, the design of new powertrains is becoming more challenging. Affordable, along with robust, development tools are fundamental for their development and optimization. In this framework, numerical simulation can represent an effective instrument to face these requirements. The proposed study assesses the accuracy of different modelling approaches for the same engine. In particular, a detailed 1D model, a simplified 1D model and a map-based model are compared. Although studies on engine simulation are available in the technical literature, the novelty introduced with this work is the assessment of accuracy and computational times of the engine models, considered by performing the new emission standard Non-Road Transient Cycle (NRTC), which is applied to a specific field such as Heavy Duty (HD) Compression Ignition (CI) engines for railway applications. This study provides new and quantitative results rarely available in the specific literature. The results show that the simplest model, despite its lower accuracy, maintains good predictive results in terms of cumulative fuel consumption and cumulative nitric oxide (NOx) emissions over the cycle considered. In particular, the difference in terms of fuel consumption for the map-based model is within 5% compared with the more detailed models. Moreover, the computational effort required by the simplest model is three orders of magnitude lower compared with the more detailed model. Therefore, as the simulation run-time is the priority, the simplest modeling approach is suitable for the evaluation of the global performance, in view of a more complex systems simulation, such as a hybrid powertrain.

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Early Stage Calibration of a Formula SAE Engine 1-D Fluid Dynamic Model with Limited Experimental Data

Cited by 2 publications

References 18 publications

CAE Approach in Combustion Modeling on a Classic Internal Combustion Engine and Ignition Timing Modeling

CAE Approach in Combustion Modeling on a Classic Internal Combustion Engine and Ignition Timing Modeling

1D and Map-Based Modeling Approaches for Railway Compression Ignition Engine in NRTC Application

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