近日那麼寒冷，部份汽車發動不了，有了這個就沒問題，不用求人。

[qiwenlauottawa1]

只要您有乐趣、满足感满满的，那就好。

謝謝村長，我有滿滿的興趣！

 

[ccc]

70寸太小了，起碼80寸才夠爽。

来个360度吧.

 

[qiwenlauottawa1]

还真是最近因为车有了启动问题跟搞机修的咨询了一下现学的……现卖了

大家共同研究探索，取長補短才有進步！

 

[qiwenlauottawa1]

来个360度吧.

應該應該，哈哈哈！

 

[西西妈]

多謝各位大俠的指點 ！ 講到發电，我是行家，我是搞發电廠出身的。

這樣做對發电機是沒有任何影響的，當車發動後，發电機就向電池充電。因電池老化 ，存電量不足，所以太冷就發動不起來。

那我问问行家，下面的说法可信不?
问:I've heard a story that a weak vehicle battery can destroy an alternator or cause an alternator to fail early.

Is this true, or is it largely fiction?


答:Absolutely yes. I sell alternators all day every day - and a poor battery is often the root cause of alternator failure.

A battery with a short in it will cause the alternator to run at full output for extended periods of time, if not continuously - and they are not built to do this. Alternators the world over are built to supply an initial high current, tapering back as the current used to start the vehicle is replenished. Constant running at full output simply overheats them and the rectifiers fail. *See edit below

If your battery is 'Open Circuit' the alternator will either not start charging at all or will erratically bounce from low to high voltage. This causes the regulator to fail prematurely (or immediately!)

A battery that simply will not accept charge won't necessarily cause premature failure of the alternator unless it is permanently at a low voltage, in which case see the 'shorted' section above.

Hope that helps?

*EDIT: Some bigger commercial and marine alternators are designed to run at full output constantly, but I don't get the feeling you're talking about those In 16 years of selling parts for alternators I've never heard of the brushes and slipring wearing and the grease in the bearings overheating from high charge current at idle. These issues are caused by other problems not in scope of this question

 

[qiwenlauottawa1]

那我问问行家，下面的说法可信不?
问:I've heard a story that a weak vehicle battery can destroy an alternator or cause an alternator to fail early.

Is this true, or is it largely fiction?


答:Absolutely yes. I sell alternators all day every day - and a poor battery is often the root cause of alternator failure.

A battery with a short in it will cause the alternator to run at full output for extended periods of time, if not continuously - and they are not built to do this. Alternators the world over are built to supply an initial high current, tapering back as the current used to start the vehicle is replenished. Constant running at full output simply overheats them and the rectifiers fail. *See edit below

If your battery is 'Open Circuit' the alternator will either not start charging at all or will erratically bounce from low to high voltage. This causes the regulator to fail prematurely (or immediately!)

A battery that simply will not accept charge won't necessarily cause premature failure of the alternator unless it is permanently at a low voltage, in which case see the 'shorted' section above.

Hope that helps?

*EDIT: Some bigger commercial and marine alternators are designed to run at full output constantly, but I don't get the feeling you're talking about those In 16 years of selling parts for alternators I've never heard of the brushes and slipring wearing and the grease in the bearings overheating from high charge current at idle. These issues are caused by other problems not in scope of this question

有這個可能性，但是不一定全部是這樣。
最起碼對我的發电機沒有任何影響，原因是我的電池不是短路、斷路、而只是老化。

 

[西西妈]

有這個可能性，但是不一定全部是這樣。
最起碼對我的發电機沒有任何影響，原因是我的電池不是短路、斷路、而只是老化。

搞机修的和搞电的分别跟我这么说了，我网上搜搜也这么说，就信了打算再频繁出现启动不了就换电池了
A battery that has an internal electrical short, usually one of the plates has come loose and is touching its neighboring plate will cause the alternator to work much harder than normal. This can shorten the life of the alternator. This condition is usually discovered quickly as the battery will not function well in this case.

When alternators or motors work harder they produce more heat. The alternator damage in this scenario is caused by heat. The insulation on the rotor windings can be damaged. The grease in the bearings can be overheated to name a couple of problems. Most alternators are designed to produce the maximum rated power for only short periods. The system design is for the alternator to charge the battery for a less than five minutes and then drop to a charge rate of less than 10% of its maximum rated power.

 

[qiwenlauottawa1]

若是電池短路，對發電機會有的危險的，因為短路就會引起過載，太大電流會導致發电機容易壞。

 

[qiwenlauottawa1]

若是電池開路，發电機就不會給它充電，因為裡面已經斷路了。這樣對發电機一點危險都沒有。

 

[西西妈]

一个论坛里连续几个回帖从不同角度分析的，我也开始打鼓为了电池万一牺牲别的更贵的零件……不值得了

In order for an an alternator to function it requires a functional battery. The battery current is required to required to energize the field coil which produces the magnetic field required for the alternator to produce energy. The alternator sends 5 amp-hours at about 3000 RPM to the battery and the balance of its output goes all the other systems in the automobile. The primary function of a car battery is to start the vehicle. Once started then the alternator takes over completely. Inside the alternator there are a series of diodes which convert the AC current into rectified DC current. Sometimes these diodes fail and pass AC current into the regulator and subsequently destroying the regulator. The Battery acts like a very large capacity capacitor. If DC is applied then it stores energy. When AC is applied to a capacitor in parallel it acts like a short circuit destroying the regulator further and cooking the alternator coil winding. The also has the effect of potential seriously destroying the battery as well if left unrepaired.

 

[qiwenlauottawa1]

搞机修的和搞电的分别跟我这么说了，我网上搜搜也这么说，就信了打算再频繁出现启动不了就换电池了
A battery that has an internal electrical short, usually one of the plates has come loose and is touching its neighboring plate will cause the alternator to work much harder than normal. This can shorten the life of the alternator. This condition is usually discovered quickly as the battery will not function well in this case.

When alternators or motors work harder they produce more heat. The alternator damage in this scenario is caused by heat. The insulation on the rotor windings can be damaged. The grease in the bearings can be overheated to name a couple of problems. Most alternators are designed to produce the maximum rated power for only short periods. The system design is for the alternator to charge the battery for a less than five minutes and then drop to a charge rate of less than 10% of its maximum rated power.

凡事都有理的，要用理性去分析它的利與敗，總是抬杠是無任何意思的 ！

 

[qiwenlauottawa1]

現在的汽車，多數用的是三相交流發电機用六支二極管經橋式整流後向電池充電。電池的作用主要是供發動機起動，其次是向車內所有的用電設備供電。一些很舊的車仍用直流發电機發電直接向電池充電。
但直流發电機故障率高，很容易壞。
車用的交流發电機工作原理與大型的三相交流發电機一樣，而且故障率很低，容易維護，所以現代的車大多數都是用交流發电機發電整流成直流電後向電池充電。

 

[Melody]

搞錯不要緊，難怪。
確實是自從那天冷到零下二十幾度開始至今年底為止，每天都用一到兩次。

您这一天好几次还不换电池，活活折磨你的车啊！[emoji33][emoji33]

 

[Melody]

一个论坛里连续几个回帖从不同角度分析的，我也开始打鼓为了电池万一牺牲别的更贵的零件……不值得了

In order for an an alternator to function it requires a functional battery. The battery current is required to required to energize the field coil which produces the magnetic field required for the alternator to produce energy. The alternator sends 5 amp-hours at about 3000 RPM to the battery and the balance of its output goes all the other systems in the automobile. The primary function of a car battery is to start the vehicle. Once started then the alternator takes over completely. Inside the alternator there are a series of diodes which convert the AC current into rectified DC current. Sometimes these diodes fail and pass AC current into the regulator and subsequently destroying the regulator. The Battery acts like a very large capacity capacitor. If DC is applied then it stores energy. When AC is applied to a capacitor in parallel it acts like a short circuit destroying the regulator further and cooking the alternator coil winding. The also has the effect of potential seriously destroying the battery as well if left unrepaired.

换换换，
换新电池省心！！！

 

[向问天]

@村長
還有一件事不妨告訴你，我家一共有六個高清衛星電視接收盒，平時價格每個約230元，但在幾年前Boxing day 當日半價，我一次買十個，其中幫親戚朋友買幾個，這個價格從那一次以後，到現在已經6、7過去了，從未見有半價出現了，這也是我的愛好與興趣吧。

敢問加拿大一般的家庭有多少人有六個高清衛星電視接收盒？

我一个都没有。
现在电视机自己带那种功能。