力士樂(lè)柱塞泵特點(diǎn),BOSCH傳感器

軸向柱塞泵 特征：柱塞軸線(xiàn)平行或傾斜于缸體的軸線(xiàn)
1. 軸向柱塞泵的工作原理
1） 斜盤(pán)式軸向柱塞泵 組成：配油盤(pán)、柱塞、缸體、傾斜盤(pán)等 工作原理：V密形成——柱塞和缸體配合而成 右半周，V密增大，吸油 V密變化，缸體逆轉(zhuǎn)< 左半周，V密減小，壓油 吸壓油口隔開(kāi)—配油盤(pán)上的封油區(qū)及缸體底部的通油孔
2） 斜軸式軸向柱塞泵 特點(diǎn)：傳動(dòng)軸軸線(xiàn)與缸體軸線(xiàn)傾斜一γ角。 組成： 工作原理：V密形成——同上 右半周，吸油 V密變化——傳動(dòng)軸逆轉(zhuǎn)< 左半周，壓油 吸壓油口隔開(kāi)——同上
2. 軸向柱塞泵的排量和流量
1） 排量 若柱塞數(shù)為z,柱塞直徑為d,柱塞孔的分布圓直徑為D, 斜盤(pán)傾角為γ， 則柱塞的行程為：h=Dtanγ,故缸體轉(zhuǎn)一轉(zhuǎn)， 泵的排量為： V=Zhπd /4= π d2 ZD（tanγ）/4 2） 流量 理論流量： qT = Vn = πd2D（tanγ）z/4 實(shí)際流量： q = qTηpv =πd2D（tanγ）zηpv/4 結(jié)論：
（1） qT = f（幾何參數(shù)、 n、γ）
（2） n = c 大小變化，流量大小變化 γ< 方向變化，輸油方向變化 變量原理： ∵ γ= 0 q = 0 大小變化，流量大小變化 γ< 方向變化，輸油方向變化 ∴ 軸向柱塞泵可作為雙向變量泵 瞬時(shí)流量： 柱塞的軸向位移： s = a’b’=oa’-ob’ = Dtanγ/2 – Dcosωttanγ/2 = D（1-cosωt）tanγ/2 柱塞的瞬時(shí)移動(dòng)速度： u = ds/dt = Dωtanγsinωt/2 單個(gè)柱塞的瞬時(shí)流量為： q‘=πd2u/4=πd2Dωtanγsinωt/8 ∵ 單個(gè)柱塞的瞬時(shí)流量按正弓玄規(guī)律變化 ∴ 整個(gè)泵的瞬時(shí)流量也按正弓玄規(guī)律變化 故 瞬時(shí)流量是脈動(dòng)的，其脈動(dòng)情況用脈動(dòng)率δ來(lái)表示， 一般： z = 奇數(shù)，δ小 z = 偶數(shù)，δ大 常取z = 7 或z = 9

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力士樂(lè)柱塞泵特點(diǎn),BOSCH傳感器

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 力士樂(lè)柱塞泵特點(diǎn),BOSCH傳感器

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