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Abstract: The relation of overlap coefficient of base level and
trapping volume of no clearance helical gear pump is analyzed, and the
variational rule of trapping volume and trapping flux and instantaneous
flux with comer are got. At the same time the range between no trapping
and no collude is got. These are quite vital for engineering
application.
Key words: Helical gear pump Clearance Trapping Critical helical angle
CLC No: TH325
科学技术部科研院所技术开发研究专项基金项目(NCSTE-2001-JKZX-
096). Received 20020328, received in revised form 20020610
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