Abstract:

According to the requirements on lateral impact test for child restraint system (CRS) in R129, which
was legislated by the Economic Commission for Europe (ECE), lateral impact sled test system was established.
Making use of the rear impact velocity wave generation system, which consisted of the polyurethane tube,
olive-shaped head, initial crash velocity and adjusting wave profile, desired lateral impact test velocity wave
was realized. According to R129, child seat bench and door system were designed, lateral impact tests were
performed on the lateral impact sled test system using the Q3 child dummy, the dummy head and chest
injury were quantitatively measured, the relative velocity curves of test bench and door components, and the
high speed impact video were analyzed. Test results demonstrate that the impact velocity profiles satisfy the
requirements of the R129, the positions of test bench and door are accurate, and the structure components are
stable. Thus, the lateral impact sled test system meets the standards of R129, and can be used for child seat
lateral impact test.

Key words: vehicle passive safety, child restraint system (CRS), lateral impact, polyurethane tube, sled test