Ocean Engineering Equipment and Technology ›› 2015, Vol. 2 ›› Issue (2): 118-123.
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Jian TIAN
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Abstract:
The low speed two-stroke marine diesel engine is developing continuously towards long stroke, high pressure, high automation, high intelligence, low consumption and low emission. MAN Company designs new ME-B type diesel engine to meet these requirements. Piston crown are one of the most important components of the engine and thermal load analysis is always the focus of research. ME-B piston crown is modified significantly in structure and dimension compared with old design. Finite element analysis is carried out for piston crown of the latest 6S50ME-B diesel engine by using ANSYS software. The three-dimensional model of piston crown is established and the temperature field is obtained. Using the temperature field as the boundary conditions, the thermal stress field and the weak point on the piston crown are found, which may offer theoretical support for further optimization.
Key words: diesel engine, piston crown, temperature field, thermal stress field
CLC Number:
O343.6
Jian TIAN. Thermal Load Analysis on 6S50ME-B Piston Crown[J]. Ocean Engineering Equipment and Technology, 2015, 2(2): 118-123.
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URL: https://www.qk.sjtu.edu.cn/oeet/EN/
https://www.qk.sjtu.edu.cn/oeet/EN/Y2015/V2/I2/118
Fig.1
Three-dimensional model of 6S50ME-B piston crown
Tabla 1
Physical characteristics of 15CrMo
Fig.2
p-ϕ diagram of 6S50ME-B diesel engine
Table 2
Boundary conditions of heat transfer of piston crown under steady working condition
Fig.3
Temperature field distribution of piston crown
Fig.4
Heat flux distribution of piston crow section
Fig.5
Thermal stress distribution of piston crown
Fig.6
Deformation cloud chart of piston crown under thermal load
Fig.7
Deformation vector chart of piston crown under thermal load
