×

Flow quantity valve controller and manufacturing method for flow quantity valve

  • US 5,501,201 A
  • Filed: 03/21/1995
  • Issued: 03/26/1996
  • Est. Priority Date: 06/03/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A flow quantity valve controller comprising:

  • a flow quantity valve of a stepper motor type for controlling a flow quantity of a fluid flowing through a flow path disposed in an internal combustion engine;

    means for detecting a run condition of the internal combustion engine;

    means for calculating a target position of said flow quantity valve based on a detection output of said run condition detection means;

    means for calculating an assumed position of said flow quantity valve; and

    flow quantity valve control means for generating a drive signal to control said flow quantity valve to the target position based on calculation results of said target position calculation means; and

    said assumed position calculation means;

    wherein said flow quantity valve control means includes specific target position detection means for detecting the target position being a predetermined specific target position and performing initialization when said specific target position detection means detects a specific target position.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×