A Simplified Circuit Model for the Emulation of Glow Phase during Spark Discharge

Zhu, Hua; Tan, Qingyuan; Purohit, Divyanshu; Yu, Shui; Zheng, Ming; Xiang, Chen; Xu, Xiaohong

doi:10.4271/2018-01-0092

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…15 Figure 2(b) is the acquired electric waveforms to demonstrate the charging and discharging processes of the conventional TCI system. When simply considering the TCI system as a transformer, the primary current (I p ) and discharge current (I s ) can be calculated according to equations (1) and (2) respectively, [30][31][32][33]…”

Section: Single-coil Single Spark Dischargementioning

confidence: 99%

“…The peak discharge current (I s max ) is determined by a number of parameters, including the primary cut-off current (I p max ), the coupling coefficient of the ignition coil (k cp ), and the primary and secondary inductance (L p and L s ), as shown in equation (3). 30,31…”

Section: Single-coil Single Spark Dischargementioning

confidence: 99%

“…The primary energy from the power supply (E p ), the secondary coil-out energy (E coilÀout ), and the spark gap energy (E gap ), were calculated based on the acquired electrical waveforms, as shown in equations ( 4)- (6). 31…”

Section: Dual-coil Offset Spark Dischargementioning

confidence: 99%

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Investigation of multi-event spark discharge strategy for lean methane-air combustion

Zhu

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The characterization of the single-coil repetitive discharge and the dual-coil offset discharge was conducted in a constant volume combustion chamber to better understand the operating principle of the multi-event spark ignition strategies. A parametric study of the dual-coil offset discharge was carried out through electric and optical diagnosis to identify the effective operational parameters, including coil working frequency, charging voltage, and coil inductances. Combustion tests under both quiescent and flow conditions with methane-air mixture were performed to demonstrate the ignition capability of the dual-coil offset strategy. Test results have shown that constantly depositing spark energy through offset discharge is beneficial to secure flame kernel. However, the offset discharge strategy requires a high working frequency, an elevated charging voltage, and fast reacting coils to maintain the spark plasma channel under high background pressure and intensified flow conditions.

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Section: Single-coil Single Spark Dischargementioning

confidence: 99%

Section: Single-coil Single Spark Dischargementioning

confidence: 99%