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

A Study on the Knocking and Misfire Detection System Using Breakdown Voltage Characteristics

2002 ◽  
Vol 124 (3) ◽  
pp. 650-659 ◽  
Author(s):  
J. K. Park ◽  
J. O. Chae
Keyword(s):  
Breakdown Voltage ◽  
Detection System ◽  
Exhaust Emissions ◽  
System Concept ◽  
Spark Plug ◽  
Negative Effect ◽  
Misfire Detection ◽  
Three Way Catalyst ◽  
New System ◽  
Engine Power

Engine knocking and misfire cause a negative effect on the engine power and the exhaust emissions such as HC, CO and NOx. They also cause permanent damages to the three way catalyst (TWC) system. And a heavy knock can cause severe damages to the engine itself, which gives more reason why it must be detected and corrected. This study introduces a new system concept for detecting combustion misfire and knocking using breakdown voltage (BDV) characteristics between spark plug electrodes. This system detects and evaluates the degree of combustion by measuring the breakdown voltage which predicts that the breakdown voltage depends on the pressure and the temperature.

A Simple Virtual Sensor for Combustion Timing

2003 ◽  
Vol 125 (3) ◽  
pp. 462-467 ◽  
Author(s):  
U. Holmberg ◽  
M. Hellring
Keyword(s):  
Closed Loop ◽  
Low Complexity ◽  
Peak Position ◽  
Ion Current ◽  
Virtual Sensor ◽  
Loop Control ◽  
Spark Plug ◽  
Crank Angle ◽  
Pressure Peak ◽  
Order Of Magnitude

A low-complexity virtual sensor for the pressure peak position of the crank angle in a spark-ignited car motor is proposed. The algorithm estimates the pressure peak position from the ion current, measured from the spark plug. The complexity of the algorithm is an order of magnitude smaller than any other proposed schemes. Still, performance is not sacrificed. Closed-loop control is demonstrated on a SAAB 9000 driven on the highway.

Ion Current Measurement of Diluted Combustion Using a Multi-Electrode Spark Plug

2018 ◽  
Author(s):  
Shouvik Dev ◽  
Navjot Singh Sandhu ◽  
Mark Ives ◽  
Shui Yu ◽  
Ming Zheng ◽  
...  
Keyword(s):  
Current Measurement ◽  
Ion Current ◽  
Spark Plug

Combustion Ionization for Detection of Misfire, Knock, and Sporadic Preignition in a Gasoline Direct Injection Engine

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Samuel Ayad ◽  
Swapnil Sharma ◽  
Rohan Verma ◽  
Naeim Henein
Keyword(s):  
Pressure Transducer ◽  
Direct Injection ◽  
Operating Conditions ◽  
Gasoline Direct Injection ◽  
Ion Current ◽  
Fuel Injector ◽  
Direct Injection Engine ◽  
Gasoline Direct Injection Engine ◽  
Spark Plug ◽  
Knock Sensor

Detection of combustion-related phenomena such as misfire, knock, and sporadic preignition is very important for the development of electronic controls needed for the gasoline direct injection engines to meet the production goals in power, fuel economy, and low emissions. This paper applies several types of combustion ionization sensors, and a pressure transducer that directly senses the in-cylinder combustion, and the knock sensor which is an accelerometer that detects the impact of combustion on engine structure vibration. Experimental investigations were conducted on a turbocharged four-cylinder gasoline direct injection engine under operating conditions that produce the above phenomena. One of the cylinders is instrumented with a piezo quartz pressure transducer, MSFI (multi-sensing fuel injector), a stand-alone ion current probe, and a spark plug applied to act as an ion current sensor. A comparison is made between the capabilities of the pressure transducer, ion current sensors, and the knock sensor in detecting the above phenomena. The signals from in-cylinder combustion sensors give more accurate information about combustion than the knock sensor. As far as the feasibility and cost of their application in production vehicles, the spark plug sensor and MSFI appear to be the most favorable, followed by the stand-alone mounted sensor which is an addition to the engine.

Analysis and Research on the Influence Factors of the Spark Plug Ion Current in Spark Ignition Engine

2014 ◽  
Vol 1070-1072 ◽  
pp. 1831-1834
Author(s):  
Chang Qing Song ◽  
Jun Li ◽  
Da Wei Qu
Keyword(s):  
Bias Voltage ◽  
Combustion Process ◽  
Influence Factors ◽  
Spark Ignition Engine ◽  
Ion Current ◽  
Current Signal ◽  
Gas Plasma ◽  
Spark Plug ◽  
Engine Combustion ◽  
Analysis System

The spark plug ion current signal carries abundant information about the engine combustion process. Real-time acquisition of the spark plug ion current signal can effectively extract the characteristic parameters, then enhance the power, fuel economy and emissions of the engine. The paper analyzed the influence factors of ion current, designed an acquisition and analysis system of spark plug ion current signal, and mainly studied the influence of spark plug gap and bias voltage on ion current signal in a six-cylinder four-stroke gas engine. The results show that the bias voltage and the spark plug gap have a great impact on the spark plug ion current signal. The ion current signal intensity is directly proportional to the bias voltage applied cross the spark plug, and inversely proportional to the spark plug gap. Results also indicates that the ion current is directly proportional to the mobility and concentration of charged particles in burned gas plasma.

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