Front structure of a vehicle

摘要

The present disclosure relates to a front structure (10) of a vehicle (11) comprising
- a front exterior (12) and/or a bumper (14),
- a pair of side members (18, 20) arranged in a longitudinal direction of the vehicle (11) at a respective left-side portion and right-hand portion of a front portion of the vehicle (11),
- a pair of crash boxes (28, 30) arranged at a respective front end of each of the side members, the crash boxes having a lower axial strength than the side members (18, 20),
- at least one stiff component, such as an engine (36), and
- a body back-up structure, located at a rear end of the front portion. The front structure is adapted to give an impact response curve with deceleration versus time, when subjected to a full frontal barrier impact at 35 mph according to USNCAP. The impact response curve comprises in sequence:
- a first phase, during which deceleration increases,
- a second phase, forming a first peak level of the deceleration,
- a third phase, during which the deceleration is less than during the second phase, and
- a fourth phase, forming a second peak level of the deceleration, during which fourth phase the deceleration is greater than during the third phase.