德國(guó)FESTO費(fèi)斯托氣缸%FESTO電磁閥的用途
德國(guó)FESTO費(fèi)斯托氣缸蓋作用
缸蓋在內(nèi)燃機(jī)屬于配氣機(jī)構(gòu),主要是用來(lái)封閉汽缸上部,構(gòu)成燃燒室.并做為凸輪軸和搖臂軸還有進(jìn)排氣管的支撐.主要是把空氣吸到汽缸內(nèi)部,火花塞把可燃混合氣體點(diǎn)燃,帶動(dòng)活塞做功,廢氣從排氣管排出。
一般有氣門間隙過(guò)大或過(guò)小,導(dǎo)致氣門異響;還有就是缸蓋上凸輪軸位置傳感器失效,不過(guò)這種情況很少,一般都是氣門故障.還有比較大的故障就是油水混合了,發(fā)生這種情況一般都是缸蓋與汽缸的結(jié)合面有貫通性的劃傷,或者汽缸墊密封不嚴(yán).這種情況就需要大拆發(fā)動(dòng)機(jī)了。德國(guó)FESTO費(fèi)斯托氣缸是發(fā)動(dòng)機(jī)上的一個(gè)十分重要的部件,它對(duì)發(fā)動(dòng)機(jī)的性能起著關(guān)鍵性的作用。其上部裝有凸輪軸,下部與氣缸機(jī)體、火花塞組成燃燒室,兩邊是進(jìn)排氣道,分別與油氣進(jìn)出的進(jìn)氣歧管和廢氣排出的排氣管相接。由于燃?xì)庠跉飧桌锉紩r(shí),氣體溫度瞬間高達(dá)1000°C以上,這種高溫?zé)釠_擊煩作用產(chǎn)生高達(dá)7MPa,且在發(fā)動(dòng)機(jī)工作時(shí)氣缸蓋長(zhǎng)期在這樣的條件下工作,所以要求氣缸蓋內(nèi)要有冷卻水道,且不斷流動(dòng)。凸輪軸和氣門在工作時(shí)由于長(zhǎng)期摩擦,也需要有相應(yīng)的潤(rùn)滑措施。另外燃燒室的形狀、大小對(duì)發(fā)動(dòng)機(jī)的性能起著至關(guān)重要的作用,需要合理的布置才能使發(fā)動(dòng)機(jī)達(dá)到*的效率。此次設(shè)計(jì)主要對(duì)以上要點(diǎn)做了設(shè)計(jì),另外根據(jù)要求氣缸蓋的材料采用ZL104合金,以提高發(fā)動(dòng)機(jī)的動(dòng)力性和經(jīng)濟(jì)性。咨詢!
德國(guó)FESTO費(fèi)斯托氣缸%FESTO電磁閥的用途
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MA-40-10-1/8-EN
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