Structural design and finite elements analysis of LHR cylinder head for vehicle engines

摘要

With the increase of strengthening degree, the parts of vehicle engines are required to bear much heavier mechanical and thermal loads. Great important is attached to the Low Heat Rejection (LHR) technique to reduce the thermal loads and heat rejection in the field of internal combustion engines. Bearing heavy mechanical and thermal loads, cylinder heads are the most complicated parts and the key point of the LHR technique application in engines. This paper presents the researched work of the LHR cylinder head and its structure. A three-dimensional Finite Element Analysis (FEA) of the cylinder head was offered and a large amount of significant data was obtained to find out the temperatures field distribution and comprehensive stresses field distribution. LHR cylinder heads have greatly reduced the amount of heat rejection. This paper may provide some insights for the LHR cylinder head's designs.