Table 6: Finite element simulation results of critical position of piston.

  H
(mm)		 Combustion bowl rim (°C) Top land
(°C)		 First ring groove (°C) Second land
(°C)		 Oil cooling gallery
(°C)		 L
(mm)
Scheme 1 18.5 327 280 235 220 229 7.7
Scheme 2 16.5 325 278 233 218 231 6.7
Scheme 3 14.5 323 277 232 216 239 5.6
Original Scheme 12.5 321 275 229 214 248 4.6
Scheme 4 10.5 319 272 226 211 257 3.6
Scheme 5 8.5 317 269 222 208 268 2.6
Scheme 6 6.5 314 263 218 206 271 1.8

H- The distance of the oil cooling gallery and the piston top surface
L- The distance of the oil cooling gallery and the combustion chamber