Detailed Approach for Pre Chamber Heat Release Analysis for the HSASI Pre Chamber Spark Plug Using A Pressure Sensor Glow Plug
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20249063
- Paper/Info type
- SETC
No.2024-32-0063
- Pages
- 1-13(Total 13 p)
- Date of publication
- Nov 2024
- Publisher
- Others, Unknown
- Language
- English
- Event
- SETC2024
Detailed Information
| Author(E) | 1) Sascha Holzberger, 2) Maurice Kettner, 3) Roland Kirchberger |
|---|---|
| Affiliation(E) | 1) University of Applied Sciences Karlsruhe, 2) University of Applied Sciences Karlsruhe, 3) Graz University of Technology |
| Abstract(E) | The hot surface-assisted spark ignition (HSASI) pre-chamber spark plug, which was developed at the Karlsruhe University of Applied Sciences, increases the dilution limit with excess air and the tolerance to residual gas in the pre-chamber compared to a conventional passive pre-chamber spark plug. In this study, the conventional glow plug which is integrated in the pre-chamber of the HSASI pre-chamber spark plug was replaced by a pressure sensor glow plug (PSG) from BERU. This allows for a detailed combustion analysis in the pre-chamber. The signal of the PSG was validated with a piezoelectric cylinder pressure sensor and a method to analyse the pre-chamber heat release was introduced. Experimental investigations were carried out on a single-cylinder gasoline engine. A series of operating points diluted with excess air and a variation in load were conducted. The gas flow rate through the orifices of the pre-chamber was calculated from the pressure difference between the pre-chamber and the main chamber. Furthermore, the momentum and the enthalpy flow of the gas jets leaving the pre-chamber were calculated to determine their influence on the heat release in the main combustion chamber. The HSASI operation was compared with a passive pre-chamber spark plug. It shows a faster heat release inside the pre-chamber which leads to a higher enthalpy and momentum of the gas jets leaving the pre-chamber. This results in a faster flame development in the cylinder and less cycle-to-cycle variations. |
