Energy-absorbing device for analog collision of automobile

The utility model which discloses an energy absorber for simulated automobile crash comprises an internal oil reservoir, an external oil reservoir, orifices, a retainer, a piston and a piston rod and is characterized in that the inside of the external oil reservoir is provided with a rectangular retainer which is connected with an external wall of the internal oil reservoir and an internal wall of the external oil reservoir; the external side of each orifice on the internal oil reservoir is provided with an adjustable bolt which is fixed on the retainer; the end part of the adjustable bolt is a cylinder with the diameter larger than the orifice or a cone which can extend into the orifice; the orifices are arranged on the internal oil reservoir in a line or in a V-shape. A speed-down waveform with different vehicle weights and vehicle crash speed can be got only by adjusting the gap between the adjustable bolt and the orifices.