Design and development method of a vehicle restraint system

Abstract

A design and development method for a vehicle restraint system comprises the following steps that the maximum layout distance of the restraint system is measured in a vehicle body model of a vehicle needing to be designed; the optimal forward movement amount of the heat of a passenger in the restraint system is worked out according to the maximum layout distance of the restraint system, and therefore the optimal X-direction thickness of a safety airbag in the front of the vehicle is obtained; an appropriate safety airbag and an air generator are selected according to the optimal X-direction thickness of the safety airbag in the front of the vehicle; through repeated test analysis, ignition timing of the safety airbag and performance parameters of a safety belt are adjusted, so that when the safety airbag is completely unfolded, the heat of a dummy for a collision test just makes contact with the safety airbag. The design and development method has the advantages that the frequency of tests is reduced, the development cycle of the vehicle restraint system is shortened, development cost is lowered, and the development effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular to a design and development method of a vehicle restraint system. Background technique [0002] The vehicle restraint system is one of the important systems to protect the safety of occupants during a collision. How to make the vehicle restraint system better protect the occupants requires a complete development system. In the vehicle restraint system, the amount of forward movement of the occupant's head when in contact with the airbag, the X-direction thickness of the front airbag of the vehicle (that is, the maximum distance that the airbag expands toward the occupant), the ignition moment of the airbag, and the seat belt's The performance of the vehicle restraint system is affected by many factors such as the ignition timing (that is, the moment when the seat belt starts to tighten), and the pre-tension force limit characteristic of the seat belt. [0003] At present, in...

AI Technical Summary

Problems solved by technology

However, since there are many variables in the vehicle restraint system, the way of continuously adjusting multiple variables by means of trial will not only cause too many tests and too long test period, but also cause a huge problem due to the large number of tests. Increased development costs, and may not be able to achieve development goals due to inadequate or incorrect adjustments

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