NDLI: Misfire Detection for Spark Ignition Engines Based Upon Cycle-by-Cycle Exhaust Temperature Sensing

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	David, P. Gardiner
Copyright Year	2010
Abstract	Misfiring is a serious issue for large spark-ignited industrial natural gas engines because it increases fuel consumption and emissions and can ultimately lead to engine damage. Continuous misfiring of an engine cylinder can often be diagnosed based upon vibration measurements or conventional exhaust temperature measurements. The aim of the research described in this paper was to develop a means of detecting not only frequent misfiring of a cylinder, but also isolated, individual misfires. This would make it possible to detect problems early in the progression from sporadic misfire events to the onset of continuous misfiring. The approach used in the study is based upon the sensing of cycle-by-cycle fluctuations in the exhaust temperature from each cylinder. Proprietary circuitry and signal processing techniques are used to extract high frequency temperature information from durable sheathed thermocouples similar to those commonly used for these types of engines. These signal fluctuations can be used to detect momentary drops in exhaust temperature that occur as unburned mixture from a misfire exits the cylinder. The system was developed and validated through engine dynamometer tests using an automotive engine equipped with laboratory-grade cylinder pressure sensors for reference measurements. Further testing was conducted using a medium speed stationary natural gas engine. In both cases, the system was shown to be able to detect and count individual and consecutive misfire events.
Sponsorship	Internal Combustion Engine Division
Starting Page	697
Ending Page	706
Page Count	10
File Format	PDF
ISBN	9780791849446
DOI	10.1115/ICEF2010-35153
e-ISBN	9780791838822
Conference Proceedings	ASME 2010 Internal Combustion Engine Division Fall Technical Conference
Language	English
Publisher Date	2010-09-12
Publisher Place	San Antonio, Texas, USA
Access Restriction	Subscribed
Subject Keyword	Pressure sensors Cycles Temperature Spark-ignition engine Gas engines Thermocouples Vibration measurement Fuel consumption Dynamometers Engines Exhaust systems Emissions Temperature measurement Fluctuations (physics) Signal processing Signals Automotive engines Damage Cylinders Engine cylinders Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in