The study on developing active hood lift system for decreasing pedestrian head injury

Lee, Keun Bae; Jung, Han Jo; Bae, Han Il

Active hood lift system has been developed to get more spaces for decreasing the head injury during pedestrian impact. This system is composed of detecting sensor, ECU where the algorithm is embedded and the pyro-type actuators which raise the hood. By this system, the rear part of the hood is raised up to approximately 120mm.

The test results of system operation are introduced for each three typical impact cases. In this test the system could detect the lower legform impactor from the other rigid pole and only in case of lower legform the actuator is deployed within the required operating time, 30ms.

To investigate the effects of this system on decreasing head injury, we have carried out the EURO NCAP child headform impact test in which the actuators are fully deployed and the rear part of the hood is initially lifted up to 115mm. Through this tests we could identify that the head injury could be reduced significantly at all target points

Year

Entry

2005

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2005

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2001

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Year

Entry

2013

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2019

Isaksson-Hellman I, Lindman M. Real-world evaluation of driver assistance systems for vulnerable road users based on insurance crash data in Sweden. In: Proceedings of the 26th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 10-13, 2019; Eindhoven, Netherlands.

2010

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