• Vrinda Menon
• Dr. Chethana K

Abstract — The increasing global concern for environmental conservation has led to stringent emission standards and a need for reducing fuel consumption. The automotive industry is thus in constant search for technological solutions for improved fuel economy and reduced emissions. The variable valve system meets these requirements by providing control over the engine valve profiles. Obtaining the desired efficiency and emission standards, with an engine employing the variable valve system, depends on the proper functioning of the valves is essential. The introduction of electronic control in the automotive sector has made it convenient for automotive manufacturers to provide and maintain highly efficient vehicles. This paper focuses on the diagnosis of a stuck valve in an IC engine with variable valve system, governed by an engine management ECU. The various variable valve actuation methods are discussed. The diagnosis of stuck valves for an electro-hydraulic VVA system is validated in this research, by implementing the function on an engine management ECU, and the simulation results for the same are provided.

VVA, electro-hydraulic valve, stuck valve, diagnostic, ECU, IC engine, VVL, VVT _________________________________________________________________________________

"Stuck Valve Diagnosis for IC Engines Employing VVL Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.524-527, June-2019, Available :http://www.jetir.org/papers/JETIR1906C85.pdf

"Stuck Valve Diagnosis for IC Engines Employing VVL Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp524-527, June-2019, Available at : http://www.jetir.org/papers/JETIR1906C85.pdf