2012年11月7日星期三

How do e-bikes work?


e-bikes work by using throttle or assistance from pedaling. Electric bikes are everyday bicycles with an added battery-powered electric motor. Although capable of pushing you along without your help, electric bikes perform noticeably better when you pedal. The average "couch potato" who normally rides at 10 mph can ride at 15-20 mph using the same effort. He can also expect a range of 45 kms, with a recharge time of several hours. Do you remember that easy pedaling after you get your bike up to speed? Thats the cruising feeling you get all the time with an electric bike.
Power, when activated by a throttle on the handlebar (power-on-demand) or in response to your pedaling (ped-elec), gives you an immediate, nearly silent push. When you release the throttle (or stop pedaling), the motor coasts or "freewheels" - like when you stop pedaling a regular bike. Standard bicycle hand brakes and gearing round out the controls.
"Power-on-demand" means just that - no pedaling required! Although all electric (or "electric-assist") bikes are designed to work with your pedaling, power-on-demand allows you to break the rule. Most systems offer a variable speed control, although some are simply on/off (like the yellow switch pictured). A "ped-elec" wont deliver motor power unless it senses you are pedaling. And its "power output to pedal pressure" ratio is often adjustable. Most people find 400-watt motors adequate for their needs, although folks with steep hills may want more power. Some bikes offer through-the-gearing power assist - i.e. the force of the motor goes through the bikes gearing system - which provides better hill-climbing and top-end speed than direct drive systems with motors of the same wattage rating.
Electric bikes Users enjoy easy acceleration, hill climbing, and cutting through headwinds. Rechargeable batteries , provide power for the electric drive motors. Charging costs less than 5¢ of electricity. Charging times due to charger output and battery capacity, but you can expect to recharge in less than 8 hours with most stock chargers.

2010年12月7日星期二

Solar E-Bike Charging Expands In Japan

Here's a measure of the growing popularity of electric bicycles in Japan:Kyocera saysit¡¯s coming out with solar-powered charging stations specifically for the assisted-power two-wheelers.

This new product isn¡¯t surprising, actually, given that earlier this year, Sanyo opened twosolar-powered parking lotsfor E-Bikes in Setagaya, Japan. While those large lots represented a hefty infrastructure investment - each is outfitted to charge 100 bicycles - Kyocera¡¯s new offering appears to be smaller and more adaptable. As pictured, the Solar Cycle Station consists of a shoulder-high wall of photovoltaic panels, maybe 10 yards in length, that could power a half-dozen bicycles. It's easy to imagine retailers, transportation hubs, apartment complexes, schools and the like making use of such a charging station.

Kyocera Solar Cycle Station, charging for electric bicyclesKyocera said it was inspired to create the Solar Cycle Station because "the popularity ofelectric bicycleshas grown immensely" in Japan, as an alternative means of transportation in daily life but also through rental shops in tourist areas.As for the question of what happens to these charging outlets at night or during persistently cloudy weather, Kyocera says not to worry: They can be connected to the regular power grid, allowing for continued service. The company also notes that in addition to having connections for electric bicycles, the stations come with conventional outlets that could be used as a power source during outages or emergencies. (www.jb-electricbikes.com)
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2008年5月5日星期一

Hydraulic valves Model Comparison Table

Product name
Model
Han Shang
Rexroth
Vickers
Yuken
Pressure control valves
Direct operated pressure relief valves
PBD
DBD
C
D
Pilot operated pressure relief valves
PB
DB
ECT
B
Solenoid operated relief valves
PBW
DBW
BCG
S-SBG
Pilot operated unloading valves
PA
DA
EUR
BUC
Pilot operated pressured reducing valves
PR
DR
X(C)G
R
Pilot operated sequence valves
PZ
DZ
RG
HG
Proportional pressure relief valves
PBE
DBE
K(A)CG
EBG
Directional control valves
Check valves
DS
S
C..G
CRG
Pilot operated check valves
DSV,DSL
SV,SL
CG,CG1
CPG,CPG-E
Solenoid operated directional control valves
4DWG
4WE
DG4V
DSG
Manually operated directional control valves
4DWMG
4WMM
DG17
DM
Electro-hydraulically directional valves
4DWHG
4WEH
DG5S4
DSHG
Hydraulic operated directional valves
WHG
WH
Proportional directional valves
4DWBA
4WRA
Polit proportional directional valves
4DWGR
4WR
proportional feedback directional valves
4DWBE
4WRE
Directional ball valves
QDE
SE
Flow control valves
Throttle valves/Throttle check valves
FG,FK
MG,MK
Throttle valves/Throttle check valves
FV,FRV
DV,DRV
FN
SR, SR..C
Flows control valves
2MRB
2FRM
Modular control valves
Relief modular valves
ZPB
ZDB
DGMC
MBA
Pressure reducing modular valves
ZPR
ZDR
DGMX
MRA
Check modular valves
Z1DS
Z1S
DGMDC
MCA
Polit check modular valves
Z2DS
Z2S
DGMPC
MPB
Double throttle check modular valves
Z2FDS
Z2FS
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2008年3月23日星期日

investment steel casting

investment steel casting
investment steel casting Manufacturer, Supplier, Factory, Exporter in china.
investment steel castingThe Detail of investment steel casting-05 Description: ProductName:investment steel castingModel No:investment steel casting-05Product Origin:China Brand Name:Ningbo Jushen Casting Industry Co.,Ltd.Price Terms: FOB NINGBO, CIF to your requested destination portPayment Terms:T/T, L/C Delivery Lead Time:30 days normally
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Sales Manager:William Cheng
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E-Mail:william@allsteelcastings.com

马英九称任内不支持“法理台独”

 新华网台北3月23日电 (记者陈斌华 李寒芳) 22日当选台湾地区领导人的马英九23日在台北举行记者会。他在答问中承诺任内不支持“法理台独”,也希望在他5月20日就任后,海协与台湾海基会能“继续运作”。

马英九胜选
  综合此间媒体报道,马英九在记者会上说,他的任期最多8年(指连任一届),对发展两岸关系的承诺不能太多,他可以做的,包括不支持“法理台独”。在他上任后,希望能把政治纷扰排除,让海基会、海协继续运作。
  他表示,要先就基本面来解决两岸关系问题,包括开放大陆观光客来台和台湾企业“前进”大陆等,以及与大陆方面会优先签订经济协议、和平协议以维持台海安全。
  他表示,台北动物园准备接受大陆方面赠送的大熊猫。

2008年3月19日星期三

万向节高新技术产业四项目获政府贴息

前,在地方政府公布的年度重点工业技改(高新技术产业)项目中,万向有4项目列入,钱潮股份有限公司年产100万支等速驱动轴总成及120万套翼型万向节总成改造项目、韩国现代威亚一期80万套等速万向节技术改造项目、万向精工年产200万套轮毂单元总成的产业化扩能项目和万向太阳能12MW太阳能组件项目。这些高新技术产业项目将受到区政府的贴息资助。

  每个产品都是有生命周期的,在它旺盛的生命周期里,企业要积极利用为社会创造更多的财富和价值。万向一贯重视产品的研发和技术改造投入,接轨国际先进技术,接轨国际主流市场,接轨国际跨国公司运作,用国际先进技术和国际主流主机市场的产品标准来改造企业,取得了显著而积极的成效。现在,万向最早开发也是生产时间最长的专业产品——万向节不仅成为国内多家主机厂定点配套的产品,而且国际上也先后为通用、福特等一流主机机厂供货,近年来还先后获得了中国名牌产品、世界名牌、国家免检产品等荣誉称号,成为万向用高新技术改造传统产品的典范。

  争创世界名牌,近年来,万向各企业都在积极开展“调整、完善、提高”。由于万向注重产品档次、技术层次、市场高度的高品质发展管理,各专业产品一个个、一步步地“做专、做精、做强、做大”,按照“小产品、专业化、大规模”的方针,逐步向各自专业领域的“省内第一-国内第一-世界第一” 直到世界同行业主导地位的长远战略目标发展。这4个项目中,万向节产品目前稳居世界第一,等速驱动轴、轮毂单元也正积极朝此目标迈进,太阳能项目是高技术的新项目,是万向按照“四高”战略发展起来的。

  “争做第一,赶超一流”,这是万向对产业的要求,也是对每个专业产品的发展原则。

  去年,结合韩国现代威亚、美国通用项目重点组织实施了等速万向节专业产品的技改扩能,争取到今年年底达到年产500万支的生产能力,并力争2011年前实现1000万支/年的生产规模,做到国内第一、全球前十位的目标。

  轿车轮毂单元专业产品,万向精工自2000年开始开发,目前在国内市场已占领先地位。去年,万向精工成为一汽大众和上海大众的全球采购定点供应商。

  太阳能项目是万向近年来在高科技领域的创新发展,技术含量高,发展迅速,已先后应用在民用的领域和航天工业中,最值得骄傲的是“神五”、“神六”、“嫦娥”上都应用了万向硅峰生产的太阳能电池板硅片。

Universal Joints

Zhejiang Liqun Automobile Parts Manufacturing Co., Ltd. Established in 1990,zhejiang liqun auto parts manufacturing co., ltd has built its name in the market as the most reliable auto parts supplier, specialized in producing universal joint cross assemblies, steering machine assemblies, drive shaft fittings and other automobile components. With 20 years, on producing, designing and sales, our products widely applied to almost all world famous brand such as benz, caterpillar, volvo, mitsubishi, scania , man ,iveco, nissan. and our U-joints are currently exported to Europe, America and some other regions. Concerning the quality control, we have been applying for the ISO/TS16949 automobile quality management system certificate. Located in coastal city ---ningbo, in zhejiang province, we enjoy the transportation convenience of sea and air geographically, which enable us to offer competitive low price and best after market service. In October 22nd, 2007,we moved into the brand new building. Covered 12000 square meters and equipped with advanced machines. the quality can be assured by the accurate processing and strict test. We hold the belief that quality is the only key to open the global market.We seek to cater the needs of business as well as local clients. We are committed to delivering a consistently high level of customer service, offering competitively low prices, and providing high quality auto parts to meet the customer demands. Our mission is to effectively and efficiently serve our customers with the highest quality service and u-joint at an affordable price.Universal joint for heavy truck is our dominant product, we recommend u-joint for Mercedes, Volvo, Scania and we provided you with vivid pictures for your reference. As the new year approaching we wish a new start from now on. We sincerely hope that all the customers from abroad and nation can share the benefit with us. Welcome all new and old friend to our company.