4.1 Classification of Hybrid Drive 混合动力的分类
Figure 4.1 serial hybrid drive
4.1 Classification of Hybrid Drive 混合动力的分类
·Parallel hybrid drive (Figure 4.2):
·Mild hybrid. A mild hybrid, also called a micro-
hybrid, usually uses a 42-volt electrical motor and battery package (36-volt batteries, 42-volt charging) and is not capable of using the electric motor to propel the vehicle on its own without help from the internal combustion engine. A mild hybrid system has the advantage of costing less, and saves less fuel compared to a full hybrid vehicle and. The fuel savings for a mild type of hybrid design is about 8% to 15%.
Hale Waihona Puke 本章难点重点1.重点：混合动力系统原理、英文专业术语； 2.难点：传动原理
Chapter 4 Transmission Systems 传动系统
本次课学习内容
4.1 Classification of Hybrid Drive 混合动力的分类
4.2 Passenger Car Hybrid Drive 乘用车混合动力传动系统
4.1 Classification of Hybrid Drive 混合动力的分类
Figure 4.3 power-split hybrid drive
4.1 Classification of Hybrid Drive 混合动力的分类
4.1.2 Categorize by their levels of hybridization
PHEV models can also be categorized by their levels of hybridization. Hybridization factor (HF) is a metric used for this purpose and represents the relative value of the power of the electric motor to the total power of the vehicle. Therefore, it can be computed according to
4.1 Classification of Hybrid Drive 混合动力的分类
·Medium hybrid. A medium hybrid uses 144- to 158-
volt batteries. Like a mild hybrid, a typical medium hybrid is not capable of propelling the vehicle from a stop using battery power alone. The fuel savings are about 20% to 25% for medium hybrid systems. Examples of a medium hybrid include Honda Accord, Insight and Civic.
- both drives can be combined, - mechanical gearbox required, - only one electric machine is necessary.
4.1 Classification of Hybrid Drive 混合动力的分类
Figure 4.2 parallel hybrid drive
Chapter 4 Transmission Systems 传动系统
本章学习内容
4.1 Classification of Hybrid Drive 混合动力的分类
4.2 Passenger Car Hybrid Drive 乘用车混合动力传动系统
本章学习目标
1.掌握混合动力的分类方法； 2.掌握典型混合动力驱动系统的结构、工作原理；
adj.强制的
n.原动机，发动机
n.壁龛，合适的位置，有利可图的 缺口，商机
4.1 Classification of Hybrid Drive 混合动力的分类
at least CE fuel economy full hybrid hybrid drive hybridization factor in conjunction with market niche
4.1 Classification of Hybrid Drive 混合动力的分类
Therefore, it can be computed according to
where, PEM represents the peak power of the electric motor and PICE is the peak power of the internal combustion engine. For a conventional ICEV we have HF = 0, while the HF of a BEV is 1, and the hybridization factor of PHEVs ranges between zero and one.
- summarising gear (planetary gear sets) required for the splitting and joining of the mechanical and electric power-paths,
- at least two high-performance electric machines are needed.
Hybrid drives are drives that have at least two different prime movers and energy accumulators.
According to the layout of the prime movers, hybrid drives can be divided into serial hybrid, parallel hybrid and power-split hybrid (also called seriesparallel hybrid) drive as follows.
4.1 Classification of Hybrid Drive 混合动力的分类
·Serial hybrid drive (Figure 4.1):
- no mechanical coupling of combustion engine and wheels, - mechanical gearbox not mandatory, - a combustion engine, in conjunction with a generator, functions solely as a electricity producer, - two high-performance electric machines (generator + generator/electric motor).
4.1 Classification of Hybrid Drive 混合动力的分类
There are different levels of "hybridization" among hybrids on the market. Different vehicle manufacturers use various hybrid technologies.
4.2.1 BMW 6-speed parallel hybrid passenger car automatic gearbox
本次课学习目标
1.掌握混合动力的分类方法； 2.掌握BMW并联式混合动力自动变速器的结构、工作 原理；
本次课难点重点
1.重点：混合动力系统原理、英文专业术语； 2.难点：并联式混合动力传动原理
4.2 Passenger Car Hybrid Drive 乘用车混合动力传动系统
New Words and Phrases
add-on CE coasting comprise decelerate differential downhill
中度混合动力 微混合动力 轻度混合动力 靠自己 并联式混合动力 功率分流式混合动力，混联式混合动力 原动机，原动力，发动机 串联式混合动力 混联式混合动力，功率分流式混合动力 重度混合动力，强混合动力
4.1 Classification of Hybrid Drive 混合动力的分类
Text
4.1.1 Categorize According to the layout of the prime movers
4.1 Classification of Hybrid Drive 混合动力的分类
·Power-split hybrid drive (Figure 4.3):
- splitting of the combustion engine power output into mechanical and electric paths,