The Researches On The Power Transmission Technique Of City Bus Energy Saving And Environment Protection

Today it becomes very urgent problems to reduce fuel consumption and exhaust gases from road vehicles for environmental protection. In order to reduce fuel consumption and exhaust gases from road vehicle, the kinetic energy that might otherwise be lost as heat during vehicle braking might be received and used.This thesis belongs to the research of the third aspect, the compound drive system is used to regenerate the loss energy. The low oil consumption and low bleeder of vehicle are achieved by using of transmission, hydraulic power control. And the compound drive system works harmoniously with engine to raise the motive capability effectively. It is the important way of automobile saving energy and environmental protection.Hydraulic pump/motor and hydraulic accumulation are used to transform and store energy, therefore it can regenerate the loss energy during vehicle braking and use this energy when automobile is in acceleration state.In this system, both driving and braking torque of the vehicle are controlled by a pump/motor. The pump/motor is used as a motor during the vehicle acceleration and as a pump when the vehicle being on braking. As a result, the vehicles with this system can not recover the kinetic energy from moving object but also use the energy at braking, namely the design of energy recovery system. In this design, the energy recovery system uses a hydraulic accumulator.This system is expected to reduce fuel consumption, especially compared with vehicle without this system. It will bring extremely high economic and social benefits.