Design and CFD analysis of intake port and exhaust port for a 4 valve cylinder head engine

International Conference on Advances in Materials and Manufacturing Applications 2017

Latheesh, V.M.^1 ; Parthasarathy, P.^1 ; Baskaran, V.^2 ; Karthikeyan, S.^2

Dept of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Coimbatore, India^1

Craftsman Automation Private Limited, Arasur, Tamilnadu, Coimbatore, India^2

关键词: Compression ignition engine;    Design and Development;    Design parameters;    Different valve lift;    Flow coefficients;    Fuel-efficient engines;    In-cylinder air motions;    Primary objective;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012122/pdf
DOI  :  10.1088/1757-899X/310/1/012122

来源: IOP

【 摘 要 】

In cylinder air motion in a compression ignition engine effects mixing of air-fuel, quality of combustion and emission produced. The primary objective is to design and analyze intake and the exhaust port for a four valve cylinder head to meet higher emission norms for a given diesel engine with two valves. In this work, an existing cylinder head designed for two valves was redesigned with 4 valves. The modern trend also confirms this approach. This is being followed in the design and development of new generation engines to meet the stringent environment norms, competition in market and demand for more fuel-efficient engines. The swirl ratio and flow coefficient were measured for different valve lifts using STAR CCM+. CFD results were validated with the two-valve cylinder experimental results. After validation, a comparison between two-valve and four-valve cylinder head was done. The conversion of two valve cylinder head to 4 valves may not support modern high swirl generating port layout and requires a trade-off between many design parameters.