A Brief Overview on Ion Current Detecting Technology of Gasoline Engines and Its Application Potential in FSAE

Zhou, Nanxi; Yang, Lijun; Peng, Kaile; Hu, Jianjun; Kang, Zhe

doi:10.1007/978-981-16-2090-4_1

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…Similar analyses were used by Xinke et al [48] and Kumano et al [49]. Another study by Zhou et al [50] analyzed the results from a number of development efforts related to using ion detection to assess engine knock, then successfully implemented this technique in a Formula SAE racing car for Chongqing University in 2020. Regardless of this success, it is likely that significant development is required for the integration of this technique into a commercial vehicle.…”

Section: Ion Radiation Across Spark Plug Gapmentioning

confidence: 92%

A Review of Recent Advancements in Knock Detection in Spark Ignition Engines

Mittal

2024

Signals

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In gasoline engines, the combustion process involves a flame’s propagation from the spark plug to the cylinder walls, resulting in the localized heating and pressurization of the cylinder content ahead of the flame, which can lead to the autoignition of the gasoline and air. The energy release from the autoignition event causes the engine cylinder to resonate, causing an unpleasant noise and eventual engine damage. This process is termed as knock. Avoiding knock has resulted in limiting the maximum engine pressures, and hence limiting the maximum efficiencies of the engine. Modern engines employ knock sensors to detect resonances, adjusting the spark plug timing to reduce pressures and temperatures, albeit at the expense of engine performance. This paper sets out to review the different signals that can be measured from an engine to detect the start of knock. These signals traditionally consist of the in-cylinder pressure, the vibrations of the engine block, and acoustic noise. This paper reviews each of these techniques, with a focus on recent advances. A number of novel methods are also presented, including identifying perturbations in the engine speed or exhaust temperature; measuring the ion charge across the spark plug leads; and using artificial intelligence to build models based on engine conditions. Each of these approaches is also reviewed and compared to the more traditional approaches. This review finds that in-cylinder pressure measurements remain as the most accurate for detecting knock in modern engines; however, their usage is limited to research settings. Meanwhile, new sensors and processing techniques for vibration measurements will more accurately detect knock in modern vehicles in the short term. Acoustic measurements and other novel approaches are showing promise in the long term.

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Section: Ion Radiation Across Spark Plug Gapmentioning

confidence: 92%

A Review of Recent Advancements in Knock Detection in Spark Ignition Engines

Mittal

2024

Signals

View full text Add to dashboard Cite

show abstract

A Brief Overview on Ion Current Detecting Technology of Gasoline Engines and Its Application Potential in FSAE

Cited by 1 publication

References 14 publications

A Review of Recent Advancements in Knock Detection in Spark Ignition Engines

A Review of Recent Advancements in Knock Detection in Spark Ignition Engines

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