Statics analysis and experimental study on the bi stable self amplifying force clutch of hybrid electric vehicles
Abstract At present, hybrid electric buses are mainly used for urban buses, which work in two conditions for a long time, such as clutch separation and clutch engagement, but the mono stable clutch cannot meet the needs. According to the working demands of the clutch, this thesis puts forward a new bi stable clutch configuration used in hybrid electric vehicles, and then its working principle is described, which realizes self amplifying force effect and solves self locking defects through the structure of double disc steel ball rolling groove mechanism. Based on statics analysis theory, the statics analysis was carried out on the back and forward rotating pressure plate, the clutch's rear end cover and master pin. Then a bi stable clutch test bed is set up in order to conduct the clutch's bearing torque, separation thoroughness, heat load test and service life test. Its conclusion provides a good foundation for the further optimal design of the bi stable clutch.