Knock measurement for fuel evaluation in spark ignition engines

✍ Scribed by C. Hudson; X. Gao; R. Stone

• Book ID: 104135578
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 997 KB
• Volume: 80
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(00)00080-6

✦ Synopsis

An average energy method for quantifying knock intensity has been developed with a shifting window period; this is called the logarithmic knock intensity (LKI). To establish the engine knock conditions, a statistical analysis has been undertaken in real-time and a 1000-cycle LKI mean has been recommended as a proper criterion for de®ning the knock intensity. A method for eliminating the speed dependence of the LKI has also been developed. Derived from the above method, a multi-microprocessor based Knock Detector with LCD and LED displays and a D/A output has been developed.