Abstract
In order to improve the fuel economy of vehicles, based on the automated mechanical transmission (AMT), a plug-in hybrid electric vehicle (PHEV) hybrid transmission for low-end multi-purpose vehicles (MPVs) is developed. To obtain the statistics of the best-selling models, we took several best-selling models in the Chinese market as the research object to study the relationship between power demand, energy demand, weight, and cost. The power requirements and energy requirements of PHEVs are decoupled. According to the decoupled theory, a single-motor parallel scheme based on the AMT is adopted to develop a PHEV hybrid transmission. In the distribution of engine and motor power, the engine just needs to meet the vehicle’s constant driving power, and the backup power can be provided by the motor, which means we can use an engine with a smaller power rating. The energy of short-distance travel is mainly provided by the motor, which can make full use of the battery, reducing the fuel consumption. The energy of long-distance travel is mainly provided by the engine, which can reduce the need for battery capacity. The working modes of the electrified mechanical transmission (EMT) are proposed, using P3 as the basic working mode and setting the P2 mode at the same time, and the gear ratios are designed. Based on the above basic scheme, two rounds of prototype development and assembling prototype vehicles for testing are carried out for the front-engine-front-drive (FF) layout. The test results show that the vehicle’s economy has been improved compared to the unmodified vehicle, and the fuel-saving rate of 100 kilometers has been achieved at 35.18%. The prototype development and the vehicle matching verify the effectiveness of the new configuration based on AMT.
Highlights
Environmental pollution and energy shortage in the world urgently require the development of new energy vehicles, which has become the world consensus [1,2]
The power-split enables flexibleof coupling between the engine and the better fuel economy, such as II, and so on motor, allowing the vehicle to combine the advantages of both series and parallel [13,14], with betterthe structure ofsuch the power-split
If the pure electric driving range of plug-in hybrid electric vehicle (PHEV) is set to 50 km, it can meet the commuting needs of about 90% of users
Summary
Environmental pollution and energy shortage in the world urgently require the development of new energy vehicles, which has become the world consensus [1,2]. The parallel DHT couples the engine power. DHTs include Volkswagen's single-motor dual-clutch transmission and DMand the motor power in parallel, enabling two powers to drive the vehicle individually or BYD's together. Motor, allowing the vehicle to combine the advantages of both series and parallel [13,14], with betterthe structure ofsuch the power-split. Scheme is oncontrollers, the basis ofwhich the automated of greatly the power-split is complex, with two setsAnother of motors and motor greatly mechanical transmission (AMT), such as BYD's. The power-split DHT, the AMT-based solution has a simpler structure and a lower cost, meaning that it onfor thedeveloping above design ideas,low-cost a new hybrid is more Based suitable a PHEV hybridtransmission transmission.based on AMT is proposed in this paper. We have developed prototypes, assembled prototype vehicles, and conducted tests to verify the effectiveness of the scheme
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
