Research on new shock absorber with variable piston volume for automotive

Aiming at the problem that friction heating phenomenon of rigid piston in traditional shock absorber has not been well treated, based on idea variable volume, a is invented, and its structure throttling characteristics are studied. On this basis, designed for vehicle. In absorber, flow resistance structures paths oil flowing through different under various working conditions. According to equivalent relationship between choke structures, pressure difference models both ends established, further integrate into overall damping force model absorber. Then, simulated analyzed, force-displacement speed verified test bench. The simulation experimental results show good without direct contact structure, which can meet requirements vehicle operation.