笔锋教育

NEW ENERGY VEHICLES

来源:笔锋教育作者:admin网址:http://www.ibefront.com浏览数:16769 

New energy vehicles is anew automotive product type, because the development time is not long, thetechnology is still not mature, so has not yet formed a widely acceptedconcept, but it certainly is new energy automobile is compared to thetraditional fuel vehicles, the new energy vehicles, according to the definitionof the scope of the concept size, there are two types of narrow and broadstatement. Generalized: used in gasoline and diesel oil as power source of thecar. Special: a non conventional vehicle fuel as the advanced technology ofpower control and drive, the formation of technology has advanced principle,new technology, new structure of automobile. New energy vehicles, includingfuel cell cars, hybrid cars, hydrogen powered cars and solar car etc..Hybridelectric vehicle is a vehicle equipped with more than two source:battery, fuelcell, solar cell,Turbine locomotive.The current hybrid vehicles generallyrefers to the diesel generator, plus battery cars.

Advantages: Vehiclestarting and stopping, driven only by the battery, do not reach a certainspeed, The engine will not work, therefore, can make the engine has beenmaintained in the best condition, good dynamic performance, very low emissions,and the source and power are the engine, gas can only. Its principle is simplythe motor and engine the reasonable arrangement of power output machine.

Disadvantages:There are twosets of power,Management control system plus two sets of dynamic,Complexstructure,Difficult,The price is high and long distance speed is notfuel-efficient.Pure electric vehicle is composed entirely of rechargeablebattery (such as lead-acid batteries, nickel cadmium batteries, nickel hydrogenbatteries or lithium ion batteries provide power source for car).Pure electricvehicle motor fuel to replace machine, low noise, no pollution,and by the useof electrical energy single, electric control system of hybrid electric vehicleis greatly simplified compared. Reduces the cost, the price also can compensatethe battery. Pure electric vehicle is mainly used for the airport, community,courts and other places.

Disadvantages: only incertain range, the market is smaller. The main reason is because of variouscategories, the prevailing prices high, life is short, the size and weight ofthe large, long charging time, serious shortcomings.Fuel cell vehicles refersto the hydrogen, methanol as the fuel, the current through the chemicalreaction, depending on the electric motor driven vehicles. The battery power isthrough the chemical reaction of hydrogen and oxygen, rather than through thecombustion, directly into electrical energy.The chemical reaction process offuel cell does not produce harmful products,therefore the fuel cell vehicle isa car without pollution, energy conversion efficiency of the fuel cell of high2 ~ 3 times than the internal combustion engine, so the use of environmentalprotection and energy, fuel cell vehiclesand is an ideal vehicle.Household caris more and more, oil prices more and more expensive, every car company beganto research and development of new energy vehicles.

1.Introduction

Chery since 2000 we haveengaged in the research and development of the new energy vehicles, throughmore than ten years of independent innovation, the new energy vehicles businessexperienced three important stages of development; From 2001 to 2005, thecompany with the national 863 project for the carrier, joint top Chineseuniversities and research institutes, undertake and completed a number ofnational 863 electric vehicle research subject, the major projects in just3years time, complete the ISG moderate hybrid and pure electric vehicles of therational development model. From 2005 to 2008, approved by ministry of a"by national energy conservation and environmental protection automotiveengineering technology research center", based on the basic completion ofthe new energy vehicles of the industrialization of the research anddevelopment, the establishment of a sound energy saving and new energy vehicledevelopment system, the world first-class new energy test center, trial-producecenter, in the electric car key components and core technology, the company hasformed a set of  key parts research,testing, application and industrialization of calibration ability, in themotor, motor drive system, DC/DC, advanced power battery, the batterymanagement system, the vehicle controller, initially forming a batch productionability, have the new energy vehicles, the core technology of the calibrationtechnology and experiment technology. New energy vehicles special vehicleaccessories system, including: electric air conditioning, the electric steering(EPS), electric vacuum, electric heating, electronic brake system has beenformed series products, with the bulk production ability. The first paragraphA5-BSG hybrid cars in 2008 listed in wuhu, batch, dalian city, as the taxi aregreatly welcomed by customers, but also become henan, guangdong, xinjiang,shanxi, fujian, zhejiang and other private user's private cars. Moderate hybrid(ISG) car has entered the small batch production stage, which is DuoGe newenergy vehicle demonstration pilot city, as the lease, the first choice ofstate-owned cars models. Miniature pureelectric vehicles and intermediate pureelectric vehicles and miniature electric buses, pure electric taxies, pureelectric bus industrialization development also has made a great progress. Atthe same time, we also pay more attention on high efficiency and energy savingthe gasoline engine, the diesel engine technology, flexible fuel automobiletechnology, strong hybrid technology, fuel cell vehicle technology,comprehensive development, a number of technical are in the leading domesticlevel. Since 2009, the company launched a new comprehensive energy carlarge-scale industrialization and application, chery A5ISG, A5BSG, S11EV andS18EV has got a letter issued by the department work products in the countrythe announcement and saving energy and environmental protection productsrecommended directory; In January 2009, chery automobile company "energyconservation and environmental protection technology platform constructionproject" get "country" first prize progress prize in science andtechnology. In March 2010 the first batch of economical pure electric cardelivery customers use and chery new energy vehicle technology Co., LTD. wasset up, marked the new energy vehicle company opened a new chapter in thebusiness

2.Main discussion

1. The advantages of newenergy vehicles (strength) analysis

The state informationcenter forecast, China's passenger car market growth situation will continuefor at least a further 15 years, annual growth needs roughly equivalent to GDPgrowth in the 1.5 times or so. In 2009 a car into the family (middle-incomefamilies buy have ability). From the qualitative Angle, car market at leastwill also have 20 years of fast growth. If domestic GDP2020 years than in 2000,around 2020 words to quadruple our country will more than the United States,automobile demand will reach 20 million cars, as the world's largest carmarket.

Since 1988, in fujianprovince, and become the largest of the special economic zone, the provincialcapital of hainan province since the haikou city become haikou city won the topten cities, and national environmental protection model city, national sanitarycity, China excellent tourist city, national garden city, national historicaland cultural city, a national civilization city advanced city, the work thecomprehensive improvement of the urban environment, "China excellent cityliving environment prize" and so on the city reputation. Hainan consistentdevelopment of the island, environmental protection island is travel healthisland, new energy, cars are the city's another environmental and health. Fromthe economic development prospects and haikou city car market developmentscale, in the city to see public transport, taxi, business, environmentalsanitation and postal and other public service and other fields, new energyvehicles have a large market space.

2. New energy vehiclesdisadvantages (weakness) analysis

(1) the traffic congestion, chaos. Nearly fiveyears motor vehicles and drivers haikou number to sustained growth, roadtraffic management brought unprecedented pressure. According to information,haikou city road 859 existing with a total length of 1797 km, motor vehicleownership of 250000 vehicles per day, and are at a 200 rate, of which the amountof private cars is as high as 26%, to the current haikou is obviously can'tmeet the transportation network of motor vehicle driving demand. Second, thecity center area road reconstruction speed slow, to the original roadreconstruction is not form system engineering, special is ages ago, DuanTouLuneck road has not been effective reform. Constrain the other major trunk anddisperse traffic volume ability. Again, there are pure state road traffic andthe lagging problems, such as haikou existing parking lot for cannotaccommodate next overmuch vehicles, lead to the driver in some sections on bothsides of the parking. This makes originally not wide road become more narrow.There is traffic development, citizens behind haikou travel a single pattern, motorcycles,cars, etc, make travel has become the public preferred way material utilizationrate reduced. If the road is sabafish intermediary haikou motorcycles andelegant demeanour car most serious place one of the flood. In the waiting bythe shop, packed with motorcycles and elegant demeanour car. They ZhanDao robguest, obstruct the other vehicles, normal traffic caused easily traffic jam.Haikou traffic police is insufficient, the control points, blind area, people'straffic, too weak, the bus lines concept overlap serious, site layout is notreasonable. Some sections of the serious traffic jam, especially holidays orrush, traffic is chaos.

  (2) for less than for parking. Data shows,at present, haikou has more than 160000 vehicles auto possession, and with morethan 20000 cars a year speed increases. The current haikou on an average daywith more than 60 new car the road, in a day and added between so many parkingobviously is not very practical. In the next few years, whether public orparking garage area will be more strained

3.Wide range of reading upto data

Hybrid cars advantage is:1, the hybrid power may according to the average need after the power todetermine the maximum power of internal combustion engine, right now in oilconsumption is low, less pollution the optimal conditions work. Need high powerinternal combustion engine power shortage, the battery to supplement; Load fora little while and surplus power can power generation to recharge the battery,due to the internal combustion engine, the battery and sustainable work canconstantly, so their trip and charging as ordinary cars. 2, for there is abattery, can be very convenient recycling braking, hill and idle when energy.3, in the noisy city, can shut by internal combustion engines, battery, toachieve "drive alone zero discharge". 4, with internal combustionengines can be very convenient solve energy consumption of the airconditioning, heating, such as pure electric vehicle defrosting problems met.5, can use the existing gas station come on, don't have to investment. 6, canlet the battery to keep in good working condition, not happened, filling put,prolong the service life, and reduce the cost.

Faults: long distancehigh-speed basic can't save fuel

4.Presentation

The essay take about cheryHybird car in china.This kind of car is very useful for every family.because ofHybird car can save  petrol .so it’scheaper than other cars. Sometimes,this kind of cars can use electric it canprotect environment also can control the climate change. This very accord withChina's national conditions. In the future green cars are very popular to usein the world.