Use of the gas ionization signal for combustion process diagnostics in the cylinder of a spark ignition engine

• Autorzy: Fiedkiewicz Ł. , Pielecha I. , Wisłocki K.

Identyfikatory

DOI

10.19206/CE-2017-433

• Języki publikacji: EN

Abstrakty

EN

The running diagnostics of the combustion process in an internal combustion engine is essential for increasing its efficiency and to improving its performance indicators. The modern diagnostics of this process no longer concerns only measurements of fast-changing thermodynamic variables, but also measurements of other parameters allowing for its evaluation. The use of electrical or optical methods in diagnostics enables the evaluation of local process parameters, such as occurrence of the flame and its temperature distribution. Actually, there are some new methods under investigation which are proposed for this kind of diagnostic. This article focuses on demonstrating the potential for using an electric signal from the gas ionization to estimate the maximum combustion pressure in a cylinder of an SI engine. This is a comparative analysis of the gas ionization current signal in the cylinder and the fast-changing pressure at fixed operating points of a 4-stroke natural gas powered engine. The study was carried out on a one-cylinder 4-stroke SI engine equipped with a cylinder pressure recording system and monitoring of the cylinder ionization current using appropriate measuring systems. The influence of engine operating conditions on the ability to determine cylinder pressure based on the ionization current signal was analyzed. This impact assessment was analyzed statistically and a strong correlation was found between the analyzed signals. The obtained results point in the potential direction of development of this type of measuring system.

Słowa kluczowe

EN

gas engine; ionization sensor; pressure sensor; engine control; lean fuel mixture

PL

silnik gazowy; czujnik jonizacji; czujnik ciśnienia; sterowanie silnika

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2017
• Tom: R. 56, nr 4
• Strony: 196--200
• Opis fizyczny: Bibliogr. 11 poz., wykr.

Twórcy

autor

Fiedkiewicz Ł.

• Faculty of Machines and Transport at Poznan University of Technology

autor

Pielecha I.

• Faculty of Machines and Transport at Poznan University of Technology

autor

Wisłocki K.

• Faculty of Machines and Transport at Poznan University of Technology

Bibliografia

• [1] WENDEKER, M., Sterowanie wtryskiem w silniku samochodowym. Lubelskie Towarzystwo Naukowe. 1999.
• [2] FILIPEK, P.,WENDEKER, M. Opinion of ionization signal to estimating composition of mixture in combustion process about engine SI. Journal of KONES Powertrain and Transport. 2008, 15(3).
• [3] BYTTNER, S., HOLMBERG, U. Closed-loop control of EGR using ion currents. Proceedings of the 27th IASTED International Conference modelling, identification and control. 2008, 978-0-88986-711-6.
• [4] ERIKSSON, L, NIELSEN, L, GLAVENIUS, M. Closed loop ignition control by ionization current interpretation. SAE Technical Paper. 1997, 970854.
• [5] MEHRESH, P., SOUDER, J., FLOWERS, D. et al. Combustion timing in HCCI engines determined by ion-sensor: experimental and kinetic modeling. Proceedings of the Combustion Institute.2005, 2701-2709.
• [6] KOWALSKI, D. Analiza nierównomierności pracy silnika o zapłonie samoczynnym z wtryskiem wielofazowym. Rozprawa doktorska. Opole 2014.
• [7] ABHIJIT, A., GEORGE, G., NABER, J. Correlation of air fuel ratio with ionization signal metrics in a multicylinder spark ignited engine. SAE Technical Paper. 2009; 2248, 45-62.
• [8] ABHIJIT, A., NABER, J. Ionization signal response during combustion knock and comparison to cylinder pressure for SI engines. SAE Technical Paper. 2009; 2159, 25-40.
• [9] HELLRING, M., HOLMBERG, U. A comparison of ioncurrent-based algorithms for peak pressure position control. SAE Technical Paper. 2001, 2001-01-1920.
• [10] HUNG, D., ZHU, G., DANNE, N., MCKOSKEY, J. Knock detection for a large displacement air-cooled V-twin motorcycle engine using in-cylinder ionization signals. SAE Technical Paper. 2008, 2008-32-0028.
• [11] LUNDSTROM, D., SCHAGERBERG, S. Misfire detection for prechamber SI engines using ion sensing and rotational speed measurements. SAE Technical Paper. 2001, 2001-01-0993.