نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Multi-layer steel (MLS) cylinder head gaskets (CHG) are widely used to seal the engine cylinder head.
Therefore, The interaction between the engine cylinder head, cylinder block and the cylinder head gasket is
very important from technical point of view. To avoid the escaping gas from the engine affecting the overall
performance of the engine during operation, both the pre-stressing force of the bolts as well as the gasket design
are critical factors in enhancing the efficiency of the sealing of the gasket.
In this paper the finite element method (FEM) is used to investigate the interaction between the cylinder
head and the cylinder block. Further more the distribution of the contact pressure on the gasket and the cylinder
head and the cylinder block stresses at different condition, such as cold assembly, hot assembly, cold start,
firing, engine cooling down to 20°(c) and -25°(c) are calculated. The validation are performed using Fuji paper
test and thermal survey test. The results revealed that the sealing pressure on the gasket strongly depends
on the pre-stressing force of the bolts. However, the location of minimum contact pressure on the gasket is
changed by considering the thermal loading.
کلیدواژهها [English]
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