混合动力汽车的开发与设计

本从混合动力汽车的发展背景，开发原理，结构型式和性能改善途径等方面阐述了混俣动力汽车的特征。     

Multivariable speed synchronisation for a parallel hybrid electric vehicle drivetrain

In this article, a new drivetrain configuration of a parallel hybrid electric vehicle is considered and a novel model-based control design strategy is given. In particular, the control design covers the speed synchronisation task during a restart of the internal combustion engine. The proposed multivariable synchronisation strategy is based on feedforward and decoupled feedback controllers. The performance and the robustness properties of the closed-loop system are illustrated by nonlinear simulation results.     

Powertrain system optimization for a heavy-duty hybrid electric bus

This research concerns the design of a powertrain system for a plug-in parallel diesel hybrid electric bus equipped with a continuously variable transmission (CVT) and presents a new design paradigm for the plug-in hybrid electric bus (HEB). The criteria and method for selecting and sizing powertrain components equipped in the plug-in HEB are presented. The plug-in HEB is designed to overcome the vulnerable limitations of driving range and performance of a purely electric vehicle (EV), and it is also designed to improve the fuel economy and exhaust emissions of conventional buses and conventional HEBs. Optimization of the control strategy for the complicated and interconnected propulsion system in the plug-in parallel HEB is one of the most significant factors for achieving higher fuel economy and lower exhaust emissions in the hybrid electric vehicle (HEV). In this research, the proposed control strategy was simulated to prove its validity using the ADVISOR (advanced vehicle simulator) analysis simulation tool.     

并联混合动力汽车驱动模式切换协调控制研究综述

混合动力汽车逐渐成为汽车行业发展的趋势,并已经在市场上取得了突破性的进展。混合动力系统中两动力源需要根据行驶路况进行能量管理和驱动模式的切换。由于发动机与电机动态响应特性的不同,单独按照各自的特性进行目标转矩控制,来达到总的需求转矩,但这样会导致整车运行模式切换过程中动力中断或出现转矩波动现象。本文主要研究运行模式切换过程中发动机与电机输出转矩的动态协调控制,目的是避免电机突增负载造成的震荡,希望在模式切换过渡过程中拥有足够的动力来保持整车快速、平稳行驶。     

双电机混合动力车辆串并联驱动模式切换控制方法

为实现双电机混联构型混合动力车辆(HEV)的串并联切换控制,通过对双电机混联构型进行串并联驱动模式分析,提出一种通过三动力源协调控制的无动力中断切换方法.将串联到并联切换过程分为发动机工作点转移、离合器结合、动力源切换3个阶段,将并联到串联行驶切换过程划分为动力源切换、离合器打开、发动机工作点转移3个阶段,并通过仿真分...     

纯电动汽车匹配及优化分析

文章以A级轿车纯电动平台进行匹配分析,基于AVLCruise和MATLAB软件进行整车匹配及优化分析.前期进行整车匹配选型工作,随着项目进行,中期试验样车进行动力性经济性试验验证,后期进行动力性问题整改,能耗的优化.文章为汽车电动车型项目开发提供一定指导参考.     

混合动力电动汽车控制策略的研究

主要讨论了并联式混合动力电动汽车的控制策略,详细阐述了控制策略的依据以及控制过程,并给出了控制策略的仿真结果。     

Diesel hybrid electric vehicle hardware system

A controller for a diesel hybrid electric vehicle based on a V-cycle development approach is investigated in this paper. The hardware and infra program of the Hybrid Control Unit (HCU) are discussed in detail. The hardware system is designed based on circuit simulation; while the infra system is written with assemble language. Time sharing mode, buffer sharing mode and multi-task schedule method are used to ensure real-time communication in the infra program design. Based on multi-thread technology, hardware in loop test system is also designed. The hardware in loop and bench tests show that the controller could meet the requirements of the hybrid electric vehicle (HEV) and communicate in real-time. Circuit simulation, HCU, infra program and hardware in loop test form the effective V-cycle development platform to design a hardware system for a diesel HEV controller.     

混合动力电动汽车性能试验与仿真

混合动力汽车因其兼有电动车的低排放优点与内燃机汽车的高比能量优点而越来越受到关注，成为竞相研发的新型车辆之一，本通过在一款富康款车上并用混合动力的实例，对汽车的各项性能指标与能量消耗的各项试验数据与车辆仿真程序计算结果进行了详细的分析，提出了锂电池混合动力电动汽车在中国城市内运行的可能性。     

Modeling and control strategy development of a parallel hybrid electric bus

This paper presents the system modeling, control strategy design, and experiment validation of a parallel hybrid electric bus with an automatic manual transmission (AMT) and a dry clutch. The mathematical model representation and the system architecture of the powertrain are first described. Next, a complete control scheme including energy management strategy and coordinated control of the AMT and the clutch is presented. The controller and powertrain models are then integrated in a way that the power management and the hybrid driveline perform in real world. The analysis and validation through model simulation and comparison with experiment data are conducted. A good agreement between the model and experiment demonstrates the efficacy and credibility of the integrated model. The integrated model is employed in both simulation and bench-test assessments for the development of a hybrid control unit. The results indicate that the model-based design methodology is beneficial to systematically analyzing and understanding the dynamics of hybrid electric powertrain.     

Emissions simulation in a 7000 kg-grade diesel hybrid electric vehicle

Hybrids combine a combustion engine with an electric motor and battery. The two technologies can be combined to reduce fuel consumption and exhaust emissions. This paper presents the concept of hybrid electric vehicles (HEVs) applied to truck or van vehicles with diesel engines. The simulation results from the advanced vehicle simulator (ADVISOR) demonstrate that the required power may be properly shared between the internal combustion engine and electric motor. The simulation can also be used to prove that the technique is useful for improvements in driving performance; additionally, the technique is suitable for hybrid electric vehicles, allowing for good fuel economy and low emissions performance.     

Performance analysis of a CVT clutch system for a hybrid electric vehicle

In this study, the performance of a CVT clutch system for a hybrid electric vehicle was investigated. To analyzed the vehicle performance at restart, the restart delay and driveshaft torque was investigated by simulations and experiments. It was found from the simulation results that the vehicle restart response depends on the clutch pressure buildup time to the point where the clutch torque begins to overcome the vehicle road load, and driving comfort at restart is directly related to the rate change of the clutch pressure.     

Parametric optimization of EQ6110HEV hybrid electric bus based on orthogonal experiment design

Parametric optimization is an important step for any mechanical system design, including the development and design of a hybrid electric bus. To obtain an optimized parameter grouping of the EQ6110HEV hybrid electric bus for best fuel economy, an orthogonal experiment design method is applied to the parameter optimization process of the EQ6110HEV hybrid prolusion system. This paper proposes two orthogonal experiment methods; the basically orthogonal experiment method and the synthetically orthogonal experiment method. By this means, the development time and the testing costs are reduced, and the impact of factors and their optimal levels are obtained by a range analysis of the experiment results. The results show that the fuel economy of the optimized parameter grouping is improved by 4.1 percent for the four-stage urban driving cycle in China and by 8.7 percent for the Wuhan urban driving cycle of public buses in China, in comparison with that of the parameter grouping of the current configuration.     

混合动力汽车的发展状况及前景初探

介绍了混合动汽车的基本概念，叙述了国外、国内在混合动力汽车方面的发展状况，对混合动力汽车的前景进行了展望，提出了发展混合动力汽车的建议。     

混合动力汽车动力总成试验台研究

基于混合动力汽车有串联、并联和混联等多种结构形式的特点,提出以模块化设计思想来搭建混合动力汽车动力总成试验台的方法,从而达到了在比较短的时间内、以尽量小的改动适应不同混合动力汽车动力总成结构形式组合需要的目标。根据研究需要,首先完成了混合动力汽车动力总成试验台并联形式的建设,并利用该试验台对所研制的混合动力城市客车多能源动力总成控制器进行了初步调试,验证了该控制器的软硬件设计和并联电动助力型控制策略。同时,所完成的发动机台架试验和电机台架试验也充分证明了试验台模块化设计思想的可行性和有效性。     

氢电混合动力车动力系统结构布置研究

随着能源危机和环境恶化,汽车工业的进一步发展受到极大的挑战,发展新能源汽车成为未来汽车工业的发展方向。氢电混合动力车是一种新能源车,其动力系统的性能对汽车的整体性能起着至关重要的作用,为了更好地实现其性能,对其结构布置进行研究很有必要。通过与传统汽车、油电混合动力车以及纯燃料电池车的动力系统进行对比,研究了氢电混合动力车动力系统的组成与特点;并详细研究了动力系统的结构布置及其特点和各自适合的工况条件。通过以上的研究,为后续动力系统结构布置的选择提供了参考,并指出了其未来发展的方向。     

并联混合动力公交车实际工况的试验与改进

本文提出了一种针对城市公交客车工作模式的并联式混合动力驱动系统的机电耦合方案,并以燃油经济性为主要目标,设计了该驱动系统的控制策略;基于ADVISOR2002建立了该驱动系统的仿真模型.通过仿真和试验发现问题,并提出解决方案.     

基于DSP的串联式混合动力汽车CAN网络设计

本文对CAN总线网络通讯做了简要介绍,在分析了串联式混合动力汽车（SHEV）基本结构和工作原理的基础上将CAN网络应用于SHEV,完成了SHEV动力系统CAN总线的网络拓扑结构设计。针对CAN节点做了基于DSP的软硬件设计。     

混合动力电动汽车技术现状及发展前景

混合动力电动汽车（HEV）已经成为当前汽车行业研究的热点。介绍了混合动力电动汽车的发展状况、动力系统的类型及特征,详细论述了混合动力电动汽车的关键技术,并对混合动力电动汽车的发展前景进行了探讨。     

Economic value and utility of a powertrain system for a plug-in parallel diesel hybrid electric bus

This research is the first to develop a design for a powertain system of a plug-in parallel diesel hybrid electric bus equipped with a continuously variable transmission (CVT) and presents a new design paradigm of the plug-in hybrid electric bus (HEB). The criteria and method for selecting and sizing powertrain components equipped in the plug-in HEB are presented. The plug-in HEB is designed to overcome the vulnerable limitations of driving range and performance of a purely electric vehicle (EV) and to improve fuel economy and exhaust emissions of conventional bus and conventional HEBs. The control strategy of the complicated connected propulsion system in the plug-in parallel HEB is one of the most significant factors in achieving higher fuel economy and lower exhaust emissions of the HEV. In this research, a new optimal control strategy concept is proposed against existing rule-based control strategies. The optimal powertrain control strategy is obtained through two steps of optimizations: tradeoff optimization for emission control and energy flow optimization based on the instantaneous optimization technique. The proposed powertrain control strategy has the flexibility to adapt to battery SOC, exhaust emission amount, classified driving pattern, driving condition, and engine temperature. The objective of the optimal control strategy is to optimize the fuel consumption, electricity use, and exhaust emissions proper to the performance targets. The proposed control strategy was simulated to prove its validity by using analysis simulation tool ADVISOR (advanced vehicle simulator).