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Title:
VARIABLE CAPACITY PUMP
Document Type and Number:
Japanese Patent JPH0579472
Kind Code:
A
Abstract:

PURPOSE: To provide a variable capacity pump which is more favorable in terms of the space and cost than a conventional pump, and the capacity of which is variable.

CONSTITUTION: A drive shaft 2 to which a plurality of gears 4-8a are fixed and a driven shaft 3 to which a plurality of driven gears engaged with the respective drive gears are fixed are arranged in a housing 12, and a partitioning member 13 is arranged between the gears. An oil discharge space 16 formed on the one side of a gear train is communicated to both an oil suction port 15 and an oil delivery port 17 of the housing 12. A spool valve 19 to divide oil, delivered in an oil delivery space 16, into oil discharged to the delivery port side and oil returned to the suction port 15 through a return passage 18 is provided. An amount of oil discharged from a pump and an oil pressure are changed according to a position in the space 16.


Inventors:
SANO SHINICHI
Application Number:
JP23628591A
Publication Date:
March 30, 1993
Filing Date:
September 17, 1991
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F01M1/16; F04B13/00; F04C14/12; F04C14/20; F04C14/26; F16K3/26; F04C11/00; (IPC1-7): F01M1/16; F04B13/00; F04C15/04; F16K3/26
Attorney, Agent or Firm:
Aoki Akira (4 outside)



 
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