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Experimental and Numerical Investigation of a Passive Pre-Chamber Jet Ignition Single-Cylinder Engine Politecnico di Torino
- Format:
- Book
- Conference/Event
- Author/Creator:
- Millo, Federico, author.
- Conference Name:
- 15th International Conference on Engines & Vehicles (2021-09-12 : Capri, Italy)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- In the framework of an increasing demand for a more sustainable mobility where the fuel consumption reduction is a key driver for the development of innovative internal combustion engines, Turbulent Jet Ignition (TJI) represents one of the most promising solutions to improve the thermal efficiency. However, details concerning turbulent jet assisted combustion are still to be fully captured, therefore the design and the calibration of efficient TJI systems require the support of reliable simulation tools that can provide additional information not accessible through experiments. To this aim, an experimental investigation combined with a numerical study was performed to analyze the TJI combustion characteristics in a single-cylinder spark-ignition (SI) engine. Firstly, the model was validated against experiments considering stoichiometric mixture at 3000 RPM, wide open throttle operating conditions. Once assessed the robustness of the proposed approach, a sensitivity analysis on the main engine operating parameters was performed to provide addition insights concerning the TJI combustion. On one side, an increment of the relative air-to-fuel ratio (1.4) was investigated in order to highlight and to compare the propagation of the flame/reactive products jets from the pre-chamber to the main chamber. On the other side, engine speed was increased to investigate the scavenging process of the prechamber. Finally, the length of the prechamber holes was varied to prove the capabilities of the develop model to drive the design process of the TJI combustion system
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-24-0010
- Access Restriction:
- Restricted for use by site license
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