Knock and Misfire Detection using Ion Current Measurement for Ultra Lean Burn Medium Speed Gas Engine

2007 ◽  
Author(s):  
Kenji Yoshimura ◽  
Yoshiro Tokunaga ◽  
Dai Hashimoto ◽  
Hideaki Sakurai
Keyword(s):  
Current Measurement ◽  
Ion Current ◽  
Lean Burn ◽  
Gas Engine ◽  
Medium Speed ◽  
Misfire Detection

Performance and Experience of the ABB TPL65VA Turbocharger With Variable Turbine Geometry on Medium-Speed Gas Engines for Generator Operation

2004 ◽  
Author(s):  
Ioannis Vlaskos ◽  
Martin Seiler ◽  
Pierre Jacoby
Keyword(s):  
Control System ◽  
Axial Flow ◽  
Field Tests ◽  
Operating Conditions ◽  
Lean Burn ◽  
Gas Engine ◽  
Generator Operation ◽  
Variable Turbine Geometry ◽  
Medium Speed ◽  
Wide Range

This paper presents the main features of an ABB turbocharger with integrated new variable geometry for the axial flow turbine and highlights its potential for improving medium-speed gas engine performance as well as the turbocharger’s adaptability to a wide range of engine applications and operating conditions. The main findings of field tests performed on a medium-speed lean burn gas engine are reported. Calibrated engine simulation computer models based on test results from a medium-speed 4-stroke gas engine with variable turbine geometry turbochargers in generator operation are used to describe the benefits expected by introducing the variable turbine nozzle ring instead of an exhaust waste gate as a gas engine control system. Special attention is paid to the investigation of the transient engine response. A direct comparison of the waste gate and VTG-control system shows the VTG-potential for further engine optimization in terms of transient response.

scholarly journals The Effect of Humidity on the Knock Behavior in a Medium BMEP Lean-Burn High-Speed Gas Engine

2016 ◽  
Vol 9 (3) ◽  
pp. 695-702
Author(s):  
Martijn van Essen ◽  
Sander Gersen ◽  
Gerco van Dijk ◽  
Torsten Mundt ◽  
Howard Levinsky
Keyword(s):  
High Speed ◽  
Lean Burn ◽  
Gas Engine

Metrological Analysis of an Ion Current Measurement System

2021 ◽  
Author(s):  
Gabriel Gruber ◽  
Markus Neumayer ◽  
Thomas Bretterklieber ◽  
Hannes Wegleiter
Keyword(s):  
Measurement System ◽  
Current Measurement ◽  
Ion Current ◽  
Metrological Analysis

Development of Spark Plug for Ion Current Misfire Detection System

2012 ◽  
Vol 5 (3) ◽  
pp. 1387-1393 ◽  
Author(s):  
Kaori Doi ◽  
Yoshihiro Nakamura ◽  
Ken Hanashi ◽  
Katushi Hashizume
Keyword(s):  
Detection System ◽  
Ion Current ◽  
Spark Plug ◽  
Misfire Detection

Experimental study of combustion strategy for jet ignition on a natural gas engine

2020 ◽  
pp. 146808742097775
Author(s):  
Ziqing Zhao ◽  
Zhi Wang ◽  
Yunliang Qi ◽  
Kaiyuan Cai ◽  
Fubai Li
Keyword(s):  
Experimental Study ◽  
Natural Gas ◽  
Efficient Points ◽  
Lean Burn ◽  
Gas Engine ◽  
Absolute Value ◽  
Natural Gas Engines ◽  
Natural Gas Engine ◽  
Excess Air ◽  
Lean Limit

To explore a suitable combustion strategy for natural gas engines using jet ignition, lean burn with air dilution, stoichiometric burn with EGR dilution and lean burn with EGR dilution were investigated in a single-cylinder natural gas engine, and the performances of two kinds of jet ignition technology, passive jet ignition (PJI) and active jet ignition (AJI), were compared. In the study of lean burn with air dilution strategy, the results showed that AJI could extend the lean limit of excess air ratio (λ) to 2.1, which was significantly higher than PJI’s 1.6. In addition, the highest indicated thermal efficiency (ITE) of AJI was shown 2% (in absolute value) more than that of PJI. Although a decrease of NOx emission was observed with increasing λ in the air dilution strategy, THC and CO emissions increased. Stoichiometric burn with EGR was proved to be less effective, which can only be applied in a limited operation range and had less flexibility. However, in contrast to the strategy of stoichiometric burn with EGR, the strategy of lean burn with EGR showed a much better applicability, and the highest ITE could achieve 45%, which was even higher than that of lean burn with air dilution. Compared with the most efficient points of lean burn with pure air dilution, the lean burn with EGR dilution could reduce 78% THC under IMEP = 1.2 MPa and 12% CO under IMEP = 0.4 MPa. From an overall view of the combustion and emission performances under both low and high loads, the optimum λ would be from 1.4 to 1.6 for the strategy of lean burn with EGR dilution.

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