Title:
FLOW CONTROL DEVICE FOR ELECTROSTRICTIVE VIBRATOR TYPE OIL PUMP
Document Type and Number:
Japanese Patent JPH0392527
Kind Code:
A
Abstract:
PURPOSE:To change the lubricant discharge quantity for one vibration of an electrostrictive vibrator by changing the width of the pulse signal controlling the excitation of the primary coil of a DC/DC converter outputting the voltage applied to the electrostrictive vibrator in response to the engine parameter. CONSTITUTION:When a pulse current is fed between a metal plate 6 fixed with an electrostrictive vibrator 6 and a coil spring 9 to repeatedly curve the electrostrictive vibrator 8 and the metal plate 6, a pump 10 discharges the lubricant sucked into a pressure chamber 1A. A pulse width modulating means 62 inputted with the signal with the preset frequency from an oscillator 60 is provided, and the pulse width is modulated based on the output of a comparing means 64 comparing the voltage value obtained in response to the engine rotating speed Ne and the preset voltage value. The on-time of the first and second switching means 68 and 69 driven in turn whenever a pulse is outputted from a pulse shaping means 61 is made variable, and the output voltage of the secondary coil 72 of a transformer 70, i.e., the deflection quantity of the electrostrictive vibrator 8, is changed.
Inventors:
KAMIYA SATOSHI
NAKAMURA MASAMI
NAKAMURA MASAMI
Application Number:
JP22706189A
Publication Date:
April 17, 1991
Filing Date:
September 01, 1989
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F01M1/16; F01M3/00; F04B43/04; F02B75/02; F16N13/00; (IPC1-7): F01M1/16; F01M3/00; F04B43/04
Attorney, Agent or Firm:
Michito Hiraki (1 person outside)
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