介紹了一種快速、簡(jiǎn)便地確定內(nèi)燃機(jī)缸內(nèi)工作過(guò)程循環(huán)變動(dòng)的方法——瞬時(shí)轉(zhuǎn)速法, 闡述了它的原理并給出了應(yīng)用實(shí)例。瞬時(shí)轉(zhuǎn)速的測(cè)量采用雙傳感器法, 闡明了其結(jié)構(gòu)及工作原理, 并對(duì)其測(cè)量精度進(jìn)行分析。提出了利用瞬時(shí)轉(zhuǎn)速確定內(nèi)燃機(jī)循環(huán)變動(dòng)的兩種參數(shù)。將利用瞬時(shí)轉(zhuǎn)速法估計(jì)的結(jié)果同利用氣缸壓力確定的結(jié)果進(jìn)行比較, 結(jié)果表明, 瞬時(shí)轉(zhuǎn)速法確定內(nèi)燃機(jī)的缸內(nèi)工作過(guò)程循環(huán)變動(dòng)是簡(jiǎn)便、可行的。
敘詞: 內(nèi)燃機(jī)　瞬時(shí)轉(zhuǎn)速　測(cè)定　方法
AbstractA qu ick and simp lem ethod of determ in ing the cyclic variab ility of wo rk ing p rocess in in ternal com bu st ion engines w as in t roduced, that is, t ran sien t speed m ethod, and it s p rincip le and actual app licat ion s w ere described. The t ran sien t speed w asm easu red by dual sen so rsm ethod, of w h ich the st ructu re and con st itu t ion w ere described and the m easu rem en t accu racy w as analyzed. Two k inds of param eters to determ ine the cyclic variab ility w ere given. The resu lt s f rom t ran sien t speed w ere compared w ith tho se f rom cylinder p ressu re, w h ich show ed that it is simp le and feasib le to determ ine the cyclic variab ility of wo rk ing p rocess w ith t ran sien t speed.
Key words　In ternal com bu st ion engines, T ran sien t speed, Determ inat ion, M ethods