力士乐柱塞泵特点,BOSCH传感器

轴向柱塞泵 特征：柱塞轴线平行或倾斜于缸体的轴线
1. 轴向柱塞泵的工作原理
1） 斜盘式轴向柱塞泵 组成：配油盘、柱塞、缸体、倾斜盘等 工作原理：V密形成——柱塞和缸体配合而成 右半周，V密增大，吸油 V密变化，缸体逆转< 左半周，V密减小，压油 吸压油口隔开—配油盘上的封油区及缸体底部的通油孔
2） 斜轴式轴向柱塞泵 特点：传动轴轴线与缸体轴线倾斜一γ角。 组成： 工作原理：V密形成——同上 右半周，吸油 V密变化——传动轴逆转< 左半周，压油 吸压油口隔开——同上
2. 轴向柱塞泵的排量和流量
1） 排量 若柱塞数为z,柱塞直径为d,柱塞孔的分布圆直径为D, 斜盘倾角为γ， 则柱塞的行程为：h=Dtanγ,故缸体转一转， 泵的排量为： V=Zhπd /4= π d2 ZD（tanγ）/4 2） 流量 理论流量： qT = Vn = πd2D（tanγ）z/4 实际流量： q = qTηpv =πd2D（tanγ）zηpv/4 结论：
（1） qT = f（几何参数、 n、γ）
（2） n = c 大小变化，流量大小变化 γ< 方向变化，输油方向变化 变量原理： ∵ γ= 0 q = 0 大小变化，流量大小变化 γ< 方向变化，输油方向变化 ∴ 轴向柱塞泵可作为双向变量泵 瞬时流量： 柱塞的轴向位移： s = a’b’=oa’-ob’ = Dtanγ/2 – Dcosωttanγ/2 = D（1-cosωt）tanγ/2 柱塞的瞬时移动速度： u = ds/dt = Dωtanγsinωt/2 单个柱塞的瞬时流量为： q‘=πd2u/4=πd2Dωtanγsinωt/8 ∵ 单个柱塞的瞬时流量按正弓玄规律变化 ∴ 整个泵的瞬时流量也按正弓玄规律变化 故 瞬时流量是脉动的，其脉动情况用脉动率δ来表示， 一般： z = 奇数，δ小 z = 偶数，δ大 常取z = 7 或z = 9

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力士乐柱塞泵特点,BOSCH传感器

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 力士乐柱塞泵特点,BOSCH传感器

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