Energy recovery system for over discharge of stereo garage
                                                                                    JI Peng
                        (Department of Mechanical and Electrical Engineering, Sanjiang University, Nanjing 210012, China)

Abstract: Aiming at the problems of over discharge impact kinetic energy of stereo garage, prfect applications of accumulator in fields of energy absorption and vibration reduction was referred, an energy recovery system for over discharge of stereo garage was proposed and designed. The working principle of the hydraulic system of energy recovery was given and studied. The filling pressure of accumulator was calculate and determined. The energy recovery system simulation model was built based on AMESim. The performance of energy recovery was simulated. The influence of over discharge velocity, piston diameter, accumulator filling pressure and accumulator gasbag volume on dynamic performance of over discharge energy recovery hydraulic system was analyzed. The research results show that when over discharge velocity increases, the stroke and diameter of energy cylinder should be increased under certain conditions. With increase of piston diameter, deceleration time of lifting plate and gasbag dynamic pressure decrease. When accumulator filling pressure increases, deceleration time of lifting plate and gasbag pressure increment decrease. Reducing valve has no obvious effect on energy recovery of accumulator.

Key words: stereo garage; over discharge; energy recovery; dynamic performance; AMESim