【鉑(bo)金(jin)火(huo)花(hua)塞】鉑(bo)金(jin)火(huo)花(hua)塞壽命 鉑(bo)金(jin)火(huo)花(hua)塞價格 鉑(bo)金(jin)火(huo)花(hua)塞怎么樣
鉑金火花塞壽命:鉑金火花塞(sai)壽命(ming)為4萬公里。
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)中心電(dian)極(ji)直徑為(wei)2.5mm,而鉑金火花塞的(de)(de)中心電(dian)極(ji)為(wei)1mm。這樣加(jia)熱中心電(dian)極(ji)所耗熱量少,消焰作用(yong)(火花生成(cheng)的(de)(de)焰 核(he)的(de)(de)熱量被溫(wen)度較低的(de)(de)電(dian)極(ji)所吸收(shou),焰核(he)向周圍擴散(san)的(de)(de)作用(yong))變小(xiao),火焰核(he)易于擴散(san)。因此(ci),在同樣的(de)(de)低點(dian)火電(dian)流強度的(de)(de)條件(jian)下(xia),氣(qi)缸內 的(de)(de)可燃(ran)混合氣(qi)能(neng)(neng)夠得到更多一些的(de)(de)點(dian)火能(neng)(neng)量,混合氣(qi)燃(ran)燒得更加(jia)充分。
2、 提高了跳火性能
由于鉑金火(huo)花(hua)塞的(de)(de)中(zhong)心電(dian)極(ji)(ji)(ji)(ji)較(jiao)細,根據(ju)尖端放(fang)電(dian)的(de)(de)原理,電(dian)極(ji)(ji)(ji)(ji)尖更容(rong)易(yi)集積(ji)較(jiao)多的(de)(de)電(dian)能,電(dian)火(huo)花(hua)更容(rong)易(yi)跳(tiao)過兩極(ji)(ji)(ji)(ji)之(zhi)間(jian)(jian)的(de)(de)間(jian)(jian)隙(xi)。這(zhe)表(biao)明(ming)在冷(leng) 機(ji)至(zhi)正常工作(zuo)轉(zhuan)速運轉(zhuan)時,有(you)(you)著良好的(de)(de)點(dian)火(huo)性(xing)能。鉑金電(dian)極(ji)(ji)(ji)(ji)還有(you)(you)一個優點(dian),就(jiu)是鉑金屬具有(you)(you)較(jiao)低的(de)(de)電(dian)子發(fa)射勢壘(lei)(electron escape barrier),即在同樣大小的(de)(de)放(fang)電(dian)間(jian)(jian)隙(xi)和電(dian)極(ji)(ji)(ji)(ji)尺(chi)寸(cun)的(de)(de)條件下,跳(tiao)過鉑金電(dian)極(ji)(ji)(ji)(ji)間(jian)(jian)隙(xi)所要求的(de)(de)電(dian)壓(ya)較(jiao)低。汽油(you)機(ji)在起動和急(ji)加(jia)速運轉(zhuan)時 ,點(dian)火(huo)線圈產生的(de)(de)二次(ci)電(dian)壓(ya)較(jiao)低,若采用鉑金火(huo)花(hua)塞,它的(de)(de)鉑電(dian)極(ji)(ji)(ji)(ji)仍(reng)能夠(gou)跳(tiao)出穩定的(de)(de)火(huo)花(hua),保證(zheng)汽油(you)機(ji)起動性(xing)、怠速穩定性(xing)和急(ji)加(jia)速性(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(jin)火花塞的放電電極的直徑1mm,傳(chuan)統的電極直徑2.5mm,鉑(bo)金(jin)放電電極的面(mian)積為傳(chuan)統放電電極面(mian)積的1/3,這樣能保持電極 較高的溫(wen)度(du)。同時(shi)由于電極與絕緣體裙部面(mian)積的增大,裙部散熱速(su)度(du)加快(kuai),裙部不易出(chu)現熾熱點火,溫(wen)度(du)比較容易控(kong)制在500~800 ℃之間。這一溫(wen)度(du),也(ye)就是燃(ran)燒的最佳(jia)工作溫(wen)度(du)。
4、 擴大了熱范圍
由(you)于鉑(bo)電(dian)極(ji)產生的(de)電(dian)火(huo)花(hua)(hua)能(neng)量較高,火(huo)花(hua)(hua)塞(sai)易通(tong)向(xiang)混(hun)合氣,這(zhe)樣火(huo)花(hua)(hua)間(jian)隙(xi)可以比(bi)一般粗電(dian)極(ji)的(de)小(xiao)些。由(you)于污損產生的(de)泄漏分路對(dui)鉑(bo)電(dian)極(ji)的(de) 影響不大,亦即鉑(bo)電(dian)極(ji)的(de)耐污損性良(liang)好,再加(jia)上(shang)由(you)于電(dian)極(ji)細,使(shi)(shi)絕緣體(ti)裙端相應(ying)變細,擴大了熱(re)室容積,這(zhe)也使(shi)(shi)得氣缸進氣時(shi)新鮮混(hun)合氣 的(de)“進機冷卻”影響較大,提高了耐熱(re)性。所以,鉑(bo)金火(huo)花(hua)(hua)塞(sai)的(de)熱(re)范(fan)圍(wei)廣,通(tong)常是普通(tong)火(huo)花(hua)(hua)塞(sai)的(de)兩倍以上(shang)。鉑(bo)金火(huo)花(hua)(hua)塞(sai)的(de)這(zhe)種(zhong)熱(re)值(zhi)寬的(de)特 點能(neng)使(shi)(shi)火(huo)花(hua)(hua)塞(sai)在自凈(jing)溫(wen)度為400℃時(shi)就(jiu)可以達到低(di)速行駛的(de)要求(qiu),在臨界點時(shi)就(jiu)能(neng)燒(shao)掉積炭,這(zhe)對(dui)燃(ran)油消(xiao)耗(hao)和(he)排放(fang)都有好處。
5、 優良的耐久性
說到火(huo)(huo)(huo)(huo)(huo)(huo)花塞壽(shou)(shou)命(ming)時(shi),往(wang)(wang)往(wang)(wang)用電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消耗(hao)來衡量,火(huo)(huo)(huo)(huo)(huo)(huo)花塞的(de)(de)(de)(de)壽(shou)(shou)命(ming)定義為“直到電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)不(bu)能(neng)跳正常的(de)(de)(de)(de)火(huo)(huo)(huo)(huo)(huo)(huo)花為止(zhi)”,可(ke)見電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消耗(hao)對火(huo)(huo)(huo)(huo)(huo)(huo)花塞壽(shou)(shou)命(ming) 的(de)(de)(de)(de)影響之大(da)。電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)消耗(hao)是(shi)由(you)燒(shao)(shao)蝕(shi)(shi)(由(you)電(dian)(dian)(dian)(dian)(dian)(dian)點火(huo)(huo)(huo)(huo)(huo)(huo)引起的(de)(de)(de)(de)燒(shao)(shao)損)和(he)(he)腐(fu)(fu)(fu)蝕(shi)(shi)(化(hua)(hua)學、熱學作用)而引起的(de)(de)(de)(de),又(you)同電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)材料(liao)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)工(gong)作溫(wen)度有關。實 際測試表明(ming),溫(wen)度到580℃以上電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)就(jiu)開(kai)始發生腐(fu)(fu)(fu)蝕(shi)(shi),而且(qie)隨(sui)溫(wen)度上升(sheng)腐(fu)(fu)(fu)蝕(shi)(shi)相應地(di)(di)(di)增(zeng)(zeng)加(jia)(jia),到890~1000℃附近(jin)就(jiu)開(kai)始氧(yang)化(hua)(hua)。如(ru)果 產生侵(qin)(燒(shao)(shao))蝕(shi)(shi),電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)棱(leng)角(jiao)就(jiu)變成弧狀(zhuang),電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)間(jian)隙將變大(da),這(zhe)樣就(jiu)會提(ti)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)間(jian)跳火(huo)(huo)(huo)(huo)(huo)(huo)所必須的(de)(de)(de)(de)放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)。一(yi)般(ban)隨(sui)著發動(dong)機的(de)(de)(de)(de)運行或汽車 行駛距離(li)的(de)(de)(de)(de)增(zeng)(zeng)加(jia)(jia),電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)間(jian)隙所必須的(de)(de)(de)(de)放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)也在不(bu)斷(duan)地(di)(di)(di)上升(sheng),會越(yue)來越(yue)接近(jin)點火(huo)(huo)(huo)(huo)(huo)(huo)線(xian)圈所提(ti)供的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)極(ji)限,于是(shi)點火(huo)(huo)(huo)(huo)(huo)(huo)越(yue)來越(yue)困難(nan),并最終(zhong) 發生了斷(duan)火(huo)(huo)(huo)(huo)(huo)(huo)。火(huo)(huo)(huo)(huo)(huo)(huo)花塞的(de)(de)(de)(de)使用壽(shou)(shou)命(ming)也就(jiu)終(zhong)結于此。但由(you)于鉑(bo)合(he)金的(de)(de)(de)(de)熔點高(gao)(熔化(hua)(hua)溫(wen)度可(ke)達(da)(da)到1800℃),耐(nai)氧(yang)化(hua)(hua)性及耐(nai)燒(shao)(shao)蝕(shi)(shi)性良好(hao),能(neng)較 好(hao)地(di)(di)(di)承受(shou)燃氣和(he)(he)殘渣的(de)(de)(de)(de)化(hua)(hua)學腐(fu)(fu)(fu)蝕(shi)(shi),并能(neng)長(chang)(chang)時(shi)間(jian)保持(chi)初始的(de)(de)(de)(de)火(huo)(huo)(huo)(huo)(huo)(huo)花間(jian)隙,從而延長(chang)(chang)了火(huo)(huo)(huo)(huo)(huo)(huo)花塞的(de)(de)(de)(de)使用壽(shou)(shou)命(ming)。通(tong)常鉑(bo)金火(huo)(huo)(huo)(huo)(huo)(huo)花塞壽(shou)(shou)命(ming)是(shi)普通(tong)型火(huo)(huo)(huo)(huo)(huo)(huo)花塞 壽(shou)(shou)命(ming)的(de)(de)(de)(de)5倍,雙鉑(bo)金火(huo)(huo)(huo)(huo)(huo)(huo)花塞平均壽(shou)(shou)命(ming)能(neng)達(da)(da)到16萬公里。