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问题:

【计算题】已知某液压泵的转速为 950r/min ,排量为 V P =168mL/r ,在额定压力

答案:

解:( 1 ) q t =V n =950 × 168 ÷ 1000=159.6L/min ( 2 )η v =q/q t =150/159.6=0.94 ; ( 3 )η m =0.87/0.94=0.925 ( 4 ) P i =pq/(60 × 0.87)=84.77kW ; ( 5 ) T i =9550P/n=9550 × 84.77/950=852Nm