Control system design and test research for a mono fuel cng engine 單燃料天然氣發(fā)動(dòng)機(jī)控制系統(tǒng)設(shè)計(jì)與試驗(yàn)研究
Single fuel vehicle 單燃料車輛
Refitted a diesel engine for a cng ( compressed natural gas ) single - fuel engine 課題針對(duì)這一實(shí)際情況,改造柴油發(fā)動(dòng)機(jī)為天然氣單燃料發(fā)動(dòng)機(jī)。
The paper can use to be as a conference of research on refitted cng engines or developed new cng engines 本文可作為天然氣單燃料發(fā)動(dòng)機(jī)改造技術(shù)或開發(fā)技術(shù)研究的參考。
The system is simple , reliable and cheap . it is suitable to use in application . and probed a new way of the application of cng engines 該系統(tǒng)工作可靠,成本低,改造方便,適合于在用柴油機(jī)改造天然氣發(fā)動(dòng)機(jī)應(yīng)用,開發(fā)了一條在用車改造天然氣單燃料發(fā)動(dòng)機(jī)的新路。
Designed a mechanical ignition timing system that is consisted of gear and belt for the cng engine . refitted a nanchong 4102 diesel engine for a cng ( compressed natural gas ) single - fuel engine 自行設(shè)計(jì)分電器裝置和齒輪皮帶式點(diǎn)火正時(shí)系統(tǒng),改造南充4102柴油發(fā)動(dòng)機(jī)為點(diǎn)燃式天然氣單燃料發(fā)動(dòng)機(jī)。
In order to develop a kind of control system of lpg single - fuel engine , which must be economic and practicable , as well on the safe side , njst and nanjing yuejin engine lmd . cooperate to design and develop the engine control system applying to njg427a5 engine 為了開發(fā)一種經(jīng)濟(jì)實(shí)用、安全可靠的lpg燃料發(fā)動(dòng)機(jī)控制系統(tǒng),南京理工大學(xué)與南京躍進(jìn)發(fā)動(dòng)機(jī)有限公司進(jìn)行合作,針對(duì)njg427a5化油器式發(fā)動(dòng)機(jī)進(jìn)行l(wèi)pg單燃料發(fā)動(dòng)機(jī)控制系統(tǒng)的設(shè)計(jì)與開發(fā)。
The purpose of this study is to develop a three - dimensional numerical calculation model for spark - ignited premixed - charge lpg single fuel engine , which includes chemical kinetics submodel , ignition submodel , turbulent combustion submodel and emissions submodel . the conclusions obtained from this study provide a principle guide for optimum design of combustion system and to obtain satisfying characteristics in emission , performance and economy of lpg engine upon suitable structure and operating parameters , such as compression ratio , valve timing and spark timing 本論文的主要研究目標(biāo)是單燃料lpg發(fā)動(dòng)機(jī)的結(jié)構(gòu)參數(shù)和運(yùn)行參數(shù)對(duì)發(fā)動(dòng)機(jī)性能的影響,以建立針對(duì)點(diǎn)燃式lpg發(fā)動(dòng)機(jī)的三維燃燒模型,包括化學(xué)動(dòng)力學(xué)模型、點(diǎn)火模型、湍流燃燒模型、排放模型為主要技術(shù)手段,并將燃燒模型計(jì)算結(jié)果和采用稀氧傳感器反饋控制的lpg實(shí)驗(yàn)發(fā)動(dòng)機(jī)上實(shí)測(cè)數(shù)據(jù)相比較驗(yàn)證。