【鉑金火(huo)花塞(sai)(sai)】鉑金火(huo)花塞(sai)(sai)壽命 鉑金火(huo)花塞(sai)(sai)價格(ge) 鉑金火(huo)花塞(sai)(sai)怎(zen)么樣

鉑金火花塞壽命：鉑金火花(hua)塞(sai)壽命為4萬公里(li)。

鉑金火花塞價格：鉑金火花塞價格通常在幾十元到上百元單支。

普通火花塞跟鉑金火花塞有什么區別？

1、 提高了發火性　

一般火花塞的(de)(de)(de)中(zhong)(zhong)心電極直徑為(wei)2.5mm，而鉑金(jin)火花(hua)塞(sai)的(de)(de)(de)中(zhong)(zhong)心電極為(wei)1mm。這樣加(jia)熱中(zhong)(zhong)心電極所(suo)耗熱量少，消(xiao)焰(yan)(yan)作用（火花(hua)生成的(de)(de)(de)焰(yan)(yan) 核(he)的(de)(de)(de)熱量被溫度較低的(de)(de)(de)電極所(suo)吸(xi)收，焰(yan)(yan)核(he)向周圍擴散的(de)(de)(de)作用）變(bian)小，火焰(yan)(yan)核(he)易(yi)于擴散。因此，在同(tong)樣的(de)(de)(de)低點火電流強度的(de)(de)(de)條件下，氣缸內(nei) 的(de)(de)(de)可燃混合(he)氣能(neng)夠得到更多一些(xie)的(de)(de)(de)點火能(neng)量，混合(he)氣燃燒(shao)得更加(jia)充分。　　

2、 提高了跳火性能　　

由于鉑(bo)(bo)金火(huo)花(hua)塞的(de)(de)(de)中心電(dian)(dian)(dian)(dian)(dian)極(ji)較(jiao)細，根據尖端放電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)原理，電(dian)(dian)(dian)(dian)(dian)極(ji)尖更容易集積較(jiao)多的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)能，電(dian)(dian)(dian)(dian)(dian)火(huo)花(hua)更容易跳過兩極(ji)之間(jian)的(de)(de)(de)間(jian)隙(xi)。這(zhe)表明在(zai)冷 機(ji)至正常工(gong)作轉速(su)運轉時，有著良好的(de)(de)(de)點火(huo)性(xing)能。鉑(bo)(bo)金電(dian)(dian)(dian)(dian)(dian)極(ji)還(huan)有一個(ge)優點，就是鉑(bo)(bo)金屬具有較(jiao)低的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子發射勢壘（electron escape barrier），即在(zai)同(tong)樣大(da)小(xiao)的(de)(de)(de)放電(dian)(dian)(dian)(dian)(dian)間(jian)隙(xi)和(he)電(dian)(dian)(dian)(dian)(dian)極(ji)尺寸的(de)(de)(de)條件下，跳過鉑(bo)(bo)金電(dian)(dian)(dian)(dian)(dian)極(ji)間(jian)隙(xi)所要求的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓較(jiao)低。汽(qi)油機(ji)在(zai)起動(dong)和(he)急(ji)加(jia)(jia)速(su)運轉時 ，點火(huo)線圈產生的(de)(de)(de)二次電(dian)(dian)(dian)(dian)(dian)壓較(jiao)低，若采(cai)用鉑(bo)(bo)金火(huo)花(hua)塞，它的(de)(de)(de)鉑(bo)(bo)電(dian)(dian)(dian)(dian)(dian)極(ji)仍能夠(gou)跳出穩(wen)(wen)定的(de)(de)(de)火(huo)花(hua)，保證汽(qi)油機(ji)起動(dong)性(xing)、怠速(su)穩(wen)(wen)定性(xing)和(he)急(ji)加(jia)(jia)速(su)性(xing)。

3、 容易穩定在自凈燃燒和熾熱燃燒之間的最佳溫度范圍內　　

鉑(bo)金火花塞的(de)(de)放(fang)電(dian)(dian)電(dian)(dian)極(ji)的(de)(de)直徑(jing)1mm，傳(chuan)統的(de)(de)電(dian)(dian)極(ji)直徑(jing)2.5mm，鉑(bo)金放(fang)電(dian)(dian)電(dian)(dian)極(ji)的(de)(de)面(mian)積為(wei)傳(chuan)統放(fang)電(dian)(dian)電(dian)(dian)極(ji)面(mian)積的(de)(de)1/3，這樣能(neng)保持(chi)電(dian)(dian)極(ji) 較(jiao)高的(de)(de)溫(wen)度。同時由于電(dian)(dian)極(ji)與絕(jue)緣體裙部(bu)面(mian)積的(de)(de)增大(da)，裙部(bu)散熱速度加快，裙部(bu)不(bu)易出現熾(chi)熱點火，溫(wen)度比(bi)較(jiao)容(rong)易控制(zhi)在(zai)500～800 ℃之間。這一溫(wen)度，也(ye)就是燃燒的(de)(de)最佳工作溫(wen)度。

4、 擴大了熱范圍　　

由(you)于鉑(bo)(bo)電(dian)極(ji)(ji)產(chan)(chan)生的(de)(de)(de)電(dian)火(huo)花能(neng)量(liang)較(jiao)(jiao)高，火(huo)花塞易通(tong)向混(hun)合氣(qi)，這(zhe)(zhe)樣火(huo)花間隙可以(yi)比一(yi)般粗電(dian)極(ji)(ji)的(de)(de)(de)小(xiao)些。由(you)于污(wu)損產(chan)(chan)生的(de)(de)(de)泄(xie)漏分(fen)路對鉑(bo)(bo)電(dian)極(ji)(ji)的(de)(de)(de) 影響(xiang)不大，亦(yi)即鉑(bo)(bo)電(dian)極(ji)(ji)的(de)(de)(de)耐(nai)(nai)污(wu)損性(xing)(xing)良好，再(zai)加上由(you)于電(dian)極(ji)(ji)細(xi)，使絕緣體(ti)裙端相應變細(xi)，擴大了(le)熱室容積(ji)(ji)，這(zhe)(zhe)也(ye)使得(de)氣(qi)缸進氣(qi)時(shi)(shi)新鮮混(hun)合氣(qi) 的(de)(de)(de)“進機冷卻”影響(xiang)較(jiao)(jiao)大，提高了(le)耐(nai)(nai)熱性(xing)(xing)。所以(yi)，鉑(bo)(bo)金火(huo)花塞的(de)(de)(de)熱范圍廣(guang)，通(tong)常(chang)是普(pu)通(tong)火(huo)花塞的(de)(de)(de)兩倍以(yi)上。鉑(bo)(bo)金火(huo)花塞的(de)(de)(de)這(zhe)(zhe)種熱值寬的(de)(de)(de)特 點能(neng)使火(huo)花塞在自(zi)凈溫度(du)為400℃時(shi)(shi)就可以(yi)達到低速行駛的(de)(de)(de)要求(qiu)，在臨界點時(shi)(shi)就能(neng)燒(shao)掉積(ji)(ji)炭(tan)，這(zhe)(zhe)對燃油消耗和排放都有好處(chu)。　　

5、 優良的耐久性　　

說到(dao)(dao)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞壽(shou)(shou)命(ming)(ming)時，往(wang)往(wang)用電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消(xiao)耗(hao)來(lai)衡量(liang)，火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞的(de)(de)(de)(de)壽(shou)(shou)命(ming)(ming)定(ding)義為(wei)“直到(dao)(dao)電(dian)(dian)(dian)極(ji)不能(neng)(neng)跳正(zheng)常的(de)(de)(de)(de)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)為(wei)止”，可見(jian)電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消(xiao)耗(hao)對(dui)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞壽(shou)(shou)命(ming)(ming) 的(de)(de)(de)(de)影響之大(da)。電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消(xiao)耗(hao)是(shi)(shi)由燒(shao)(shao)(shao)蝕(shi)(shi)（由電(dian)(dian)(dian)點(dian)(dian)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)引(yin)起的(de)(de)(de)(de)燒(shao)(shao)(shao)損）和(he)腐蝕(shi)(shi)（化(hua)學、熱學作用）而引(yin)起的(de)(de)(de)(de)，又同電(dian)(dian)(dian)極(ji)材料(liao)和(he)電(dian)(dian)(dian)極(ji)工作溫度(du)有關。實 際測試(shi)表明(ming)，溫度(du)到(dao)(dao)580℃以上電(dian)(dian)(dian)極(ji)就(jiu)(jiu)開(kai)始(shi)發生(sheng)腐蝕(shi)(shi)，而且隨溫度(du)上升腐蝕(shi)(shi)相應地增加，到(dao)(dao)890～1000℃附(fu)近就(jiu)(jiu)開(kai)始(shi)氧化(hua)。如(ru)果 產(chan)生(sheng)侵(qin)（燒(shao)(shao)(shao)）蝕(shi)(shi)，電(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)棱角(jiao)就(jiu)(jiu)變成弧狀，電(dian)(dian)(dian)極(ji)間(jian)隙(xi)將變大(da)，這(zhe)樣就(jiu)(jiu)會(hui)提(ti)高電(dian)(dian)(dian)極(ji)間(jian)跳火(huo)(huo)(huo)(huo)(huo)(huo)(huo)所(suo)必須的(de)(de)(de)(de)放電(dian)(dian)(dian)電(dian)(dian)(dian)壓。一(yi)般隨著(zhu)發動機的(de)(de)(de)(de)運(yun)行或汽車 行駛距離的(de)(de)(de)(de)增加，電(dian)(dian)(dian)極(ji)間(jian)隙(xi)所(suo)必須的(de)(de)(de)(de)放電(dian)(dian)(dian)電(dian)(dian)(dian)壓也在不斷地上升，會(hui)越(yue)來(lai)越(yue)接近點(dian)(dian)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)線(xian)圈所(suo)提(ti)供的(de)(de)(de)(de)電(dian)(dian)(dian)壓極(ji)限，于是(shi)(shi)點(dian)(dian)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)越(yue)來(lai)越(yue)困難，并(bing)最終 發生(sheng)了(le)斷火(huo)(huo)(huo)(huo)(huo)(huo)(huo)。火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞的(de)(de)(de)(de)使用壽(shou)(shou)命(ming)(ming)也就(jiu)(jiu)終結于此。但由于鉑合金(jin)的(de)(de)(de)(de)熔點(dian)(dian)高（熔化(hua)溫度(du)可達到(dao)(dao)1800℃），耐氧化(hua)性(xing)及耐燒(shao)(shao)(shao)蝕(shi)(shi)性(xing)良好(hao)，能(neng)(neng)較(jiao) 好(hao)地承受燃氣和(he)殘渣的(de)(de)(de)(de)化(hua)學腐蝕(shi)(shi)，并(bing)能(neng)(neng)長時間(jian)保持(chi)初始(shi)的(de)(de)(de)(de)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)間(jian)隙(xi)，從而延長了(le)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞的(de)(de)(de)(de)使用壽(shou)(shou)命(ming)(ming)。通(tong)常鉑金(jin)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞壽(shou)(shou)命(ming)(ming)是(shi)(shi)普(pu)通(tong)型火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞 壽(shou)(shou)命(ming)(ming)的(de)(de)(de)(de)5倍，雙(shuang)鉑金(jin)火(huo)(huo)(huo)(huo)(huo)(huo)(huo)花(hua)(hua)(hua)(hua)塞平均壽(shou)(shou)命(ming)(ming)能(neng)(neng)達到(dao)(dao)16萬公(gong)里(li)。