经贸要闻

Starting from January 1, 2003, China will further cut its import tariff rate, with the average level dropping from the 12％ previously imposed, to 11％, according to the Tariff Policy Commission of the State Council. The tariff cuts cover more than 3,000 items. The tariff cut is, on the one hand, an obligation undertaken by China to fulfill its commitments on the entry into the World Trade Organisation (WTO), and on the other, it     

今年中国降低百余税目进口税

The Tariff Commission of the State Council has announced that with the approval of the State Council, China will pursuant to its tariff reduction commitments to the WTO further lower the import duties on more than 100 items including vegetable oils,raw chemicals,automobiles and spare parts,starting from January 1 this year. It is learned that as China has earlier honoured the majority of its tariff reduction obligations,the tariff cut range and the number of items involving tariff cut will…     

履行承诺降低关税

The first day of 2003 saw a hundred percentage point decrease in China' s tariff. China lowered the overall level of its tariff from 15.3% to 12% in 2002 and further lowered it to 11% on the first day of 2003. Tariff rates for more than 3,000 taxable items have been cut at different rates, and average tariff rate for industrial products and agricultural products has dropped by 7. 2% and 9.6% respectively.     

中国-智利自由贸易协定实施

The China-Chile Free Trade Agreement has officially been implemented as of October 1,2006. This is the first free trade agreement(FTA)China has signed with a Latin American country. China's Ministry of Commerce (MOC)published a bulletin,announcing that as of October 1,2006,China lowered the tariff for 2,806 kinds of products originally produced in Chile to zero,while Chile abolished its tariff on 5,891 kinds of China-made products. In addition,starting from January 1,2007,China fur…     

Arbitrate of special protectionist tariff effect the tire market equilibrium

Despite is a lose-lose decision, but Obama is still approved for political reasons the United States on China to take special protectionist tariff for tires. From September 26, the United States will be on the basis of China＇s exports of cars and light truck tires in the existing 3.4% to 4.0% of the import tariffs, consecutive with three years to levy 35%, 30%, 25% punitive tariffs respectively. In writer＇s view, the decision is affecting the balance between the supplies of the world＇s largest tire incident;     

今年中国降低百余税目进口税

The Tariff Commission of the State Council has announced that with the approval of the State Council,China will pursuant to its tariff reduction commitments to the WTO further lower the import duties on more than 100 items including vegetable oils,raw chemicals,automobiles and spare parts,starting from January 1 this year.The Tariff Com m ission of the State Council has an-nounced thatwith the approvalofthe State Council,Chinawillpursuantto its tariffreduction com m itm ents to the W T…     

中国调整进出口关税税则

As of January 1 of this year,China has further adjusted the import and export tariff,mainly covering such fields as most favoured nation treatment,annual temporary tariff rate,bilateral tariff rate,preferential tariff rate,and tariff items.     

中国-东盟自由贸易区协议税率实施

The Customs Tariff Commission of the State Council has decided to impose the negotiated tariff rate of the China-ASEAN Free Trade Zone on goods from six members of the Association of Southeast Asian Nations(ASEAN)including Brunei,Indonesia,Malaysia, Singapore and Thailand,from July 20,2005.(Existing negotiated tariff rate on Early Harvest commodities of also included.) W ith the im position of the tariff rate, the tariff rates on 3,408types of goods from the six nations will be lo…     

中国再次调整进出口关税

Starting from January 1,China has readjusted the tariff on import and export.     

Integrated control strategy for CVT powertrains with consideration of vehicle drivability

During shift,power flow is not interrupted in powertrains equipped with continuously variable transmission(CVT).When hard acceleration is commanded,engine speed will flare and corresponding torque will be consumed,which leads to a drop in vehicle drive torque and also the vehicle acceleration.This is the reason why CVT vehicles have poor drivability during hard acceleration maneuver.Conventional method such as torque compensation doesn’t always work due to the limited backup torque of engine.According to this,means to evaluate the drivability of CVT vehicles are studied,affect factors of drivability are analyzed in detail.Hard acceleration process of CVT vehicle is studied by theoretical analysis,based on which engine torque and ratio change rate of CVT are identified as two key control parameters that decide the drivability of CVT vehicles during hard acceleration maneuver.Therefore,a control strategy based on restricting the change rate of CVT ratio together with torque compensation is proposed,and two different algorithms to establish the limitation of ratio change rate are proposed.These two algorithms are simulated and compared with each other,results indicate that drop of vehicle acceleration is eliminated evidently by limit the change rate of CVT ratio,but small ratio change rate also results in a longer time to finish the accelerate process,an algorithm to decide a proper ratio change rate is needed in order to tune these different characteristics.In order to get better control effects,a new fuzzy logic based algorithm is proposed to decide a proper ratio change rate during kick down conditions,simulation and experiment results indicate that,the amount of vehicle acceleration decrease is reduced from about 1 m/s2 to almost 0,in the mean time the accelerate process only delayed for about 0.3 s.The proposed control strategy and algorithm can effectively tune the characteristics of CVT equipped vehicle during kick down conditions.     

基于PIC单片机直流电机控制器的设计与实现

直流电机因其转速调节灵活,方法简单,易于大范围平滑调速,控制性能好等特点,一直在传动领域占有统治地位。本文应中国电子科技集团第27研究所的要求,设计开发了一套基于PIC单片机的直流电机多速控制器,作为其配套的试验装置。运行结果表明,系统实现了直流电机的高精度多速度控制．达到了性能指标要求。目前已经进入试验阶段。     

两级活塞式超高压氢气压缩机

氢燃料电池汽车是目前唯一真正做到“零排放”的新能源汽车，也是未来汽车发展的必然趋势。发展氢燃料电池汽车的关键是加氢站的普及程度，而建设成本是制约国内加氢站普及程度的重要因素，关键设备全部进口又是成本居高不下的原因所在。为助推我国氢燃料电池汽车的发展，联合研制了具有自主知识产权的国内首台液压驱动、两级连续压缩的活塞式超高压氢气压缩机，作为加氢站的关键设备之一，其技术性能达到了国外同类产品的先进水平，高效、节能，完全可以替代进口，且成本大幅度降低。     

出口三论

2011年,就全年进出口市场来看,我国工程机械行业算是丰收的一年。行业全年进出口贸易总额为249.55亿美元,同比增长33.2%,工程机械产品进、出口额均超过历史最高的2008年。对于2012年,中国工程机械工业协会会长祁俊指出,在国际市场上,中国企业正进入一个史无前例的战略机遇期。一些国家和地区对工程机械需求继续上升,中国工程机械企业将面临全新的发展机遇,也必将迎来严峻的市场挑战。     

中国成为汽车产销大国(英文)

<正>While global economy is still moving difficultlyto wards recovery, China has become a major auto consumption market in the world. According to statistics released by the China Association of Automobile Manufacturers ( CAAM) , China's output and sales     

一种新型组合式LED汽车尾灯

现有的LED汽车尾灯没有充分利用LED的优点,致使尾灯配光设计困难,成本据高不下。现有效利用LED光源体积小、亮度高等优点,运用TracePro等仿真软件成功设计出一款新型组合式LED汽车尾灯。该尾灯完全依靠反射腔配光,结构设计简单、灵活。实际测试和实验表明,该尾灯满足汽车尾灯在造型、光学等方面的要求,是一种节能、高效的新一代汽车尾灯。     

车用电控柴油机的组成及故障诊断方法

汽车电子控制技术的发展,为柴油机实施更精确控制提供了坚实的技术保证。电控柴油机控制精确,耗油量低,动力强劲,排放可以达到欧Ⅲ标准。我国目前已自主开发了多种电控柴油发动机,但是,由于电控柴油机配件的关     

车用永磁同步电机三维温度场分析

为了研究车用永磁同步电机的温度场,以一台额定功率为25kW的车用永磁同步电机为研究对象,基于传热学基本理论,建立其三维求解域模型,通过仿真分析,得出了电机额定工况下的温度场及温升变化,并对连续变功率工况下的电机内关键部分的温升进行仿真分析,以研究车辆实际行驶时电机温度场的变化情况。通过搭建的实验平台,对电机工作在额定工况和连续变工况条件下的温升进行了测试。经对比分析,实验数据与仿真数据误差较小,验证了仿真的正确性。