CAT公司發(fā)展史及燃油系統(tǒng)發(fā)展

1、2.傳統(tǒng)高壓油泵燃油系統(tǒng)傳統(tǒng)高壓油泵燃油系統(tǒng)改進(jìn)型改進(jìn)型分列泵（單體泵）分列泵（單體泵）高壓油管與噴油器連接高壓油管與噴油器連接泵噴嘴泵噴嘴機(jī)械控制單體噴油器機(jī)械控制單體噴油器(MUI)燃油系統(tǒng)燃油系統(tǒng)機(jī)械控制單體噴油器機(jī)械控制單體噴油器(MUI)燃油系統(tǒng)燃油系統(tǒng)沒有外部的高壓燃油管路最高噴油壓力可達(dá) 1,400 Bar (20,000 psi)電子控制單體噴油器電子控制單體噴油器(EUI)燃油系統(tǒng)燃油系統(tǒng) 沒有外部的高壓燃油管路 可以精確的控制合適的噴油正時(shí)和供油持續(xù)時(shí)間 最高噴油壓力可達(dá) 2,070 Bar (30,000 psi)4.第二代電子控制噴射柴油機(jī)第二代電子控制噴射柴油機(jī)時(shí)間控

2、制式時(shí)間控制式機(jī)械壓油機(jī)械壓油機(jī)械控制噴油機(jī)械控制噴油電子控制噴油電子控制噴油機(jī)械壓油機(jī)械壓油5.液壓操作電子控制單體噴油器液壓操作電子控制單體噴油器壓縮燃油的壓力由液壓系統(tǒng)提供沒有外部的高壓油管準(zhǔn)確的噴油正時(shí)及噴油持續(xù)時(shí)間的控制噴射壓力可高達(dá)23,500 psi噴油壓力幾乎不受發(fā)動(dòng)機(jī)轉(zhuǎn)速的影響EUI與與HEUI噴油壓力與發(fā)動(dòng)機(jī)轉(zhuǎn)速的關(guān)系噴油壓力與發(fā)動(dòng)機(jī)轉(zhuǎn)速的關(guān)系 HEUI 噴油 壓力 EUI 發(fā)動(dòng)機(jī)轉(zhuǎn)速In the Chino Copper Mine in New Mexico, this 16V4000 engine and 9 others power 930E Haulpak mine

3、 trucks. They were sold based on equal cost per ton mile with the 35 Caterpillar trucks. The Haulpak trucks have approx. 64% availability compared to approx. 85% availability of Cat trucks. One DDC / MTU engine was lost due to piston failure because of fuel washdown of the cyl. walls and one fuel pump (shown here) failure. Fuel leaks have been common. Above is from LEC visit to mine during week of 27 April 1998. 噴油壓力穩(wěn)定準(zhǔn)確的噴油正時(shí)及噴油持續(xù)時(shí)