This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of the dynamic test requirements for child restraints according to the ECE 44 regulation
Technical Paper
1982-13-0020
Published September 08, 1982 by International Research Council on Biokinetics of Impact in Switzerland
Sector:
Language:
English
Abstract
An evaluation of the dynamic test requirements of the ECE 44
child- restraint regulation is made, based on a 1 and 1/2 years of
experience with a wide variety of child-restraint systems in about
450 tests. The performance of current ""state of the
art"" child-restraint concepts is discussed, the
conclusion being that most current designs need substantial
modifications to fulfill the ECE 44 requirements.
There is a problem with the seats using adult 3-point belts as
regards the chest acceleration tolerances. The padded shield-type
seats with lap belts, on the other hand, have a tendency to exceed
the maximum head excursion limit of 550 mm. Most systems using
belts show abdominal penetration, often resulting in a submarining.
The regulation is found to be very restrictive, which could lead to
overcomplicated systems likely to be rejected by parents. A cause
of the difficulty can be the seat cushion of the ECE 44 bench seat
which seems to be too soft. Some improvements to the dummies and
the abdominal penetration measurements is discussed. Measurement of
head accelerations is proposed because of the possibility of head
contacts with certain types of restraint systems.