Title:
VALVE CHARACTERISTIC ADJUSTING DEVICE
Document Type and Number:
Japanese Patent JP2005133708
Kind Code:
A
Abstract:
To provide a valve characteristic adjusting device of motor utilization type which realizes a size reduction.
The valve characteristic adjusting device includes a drive circuit 110 for driving to energize a motor 12 from a control signal of a control circuit 150 and sensing signals of rotary position sensors 18u, 18v, and 18w each for sensing the rotary position of the motor 12. This drive circuit 110 further generates a number-of-rotation signal representing a real number of rotations of the motor 12 from the sensing signals of the rotary position sensors 18u, 18v, and 18w, and has the function of transmitting the number-of-rotation signal to the control circuit 150.
Inventors:
TANI HIDEJI
Application Number:
JP2004128255A
Publication Date:
May 26, 2005
Filing Date:
April 23, 2004
Export Citation:
Assignee:
DENSO CORP
International Classes:
F01L1/34; F01L1/344; F01L1/352; F01L13/00; F02D13/02; F02D45/00; (IPC1-7): F02D13/02; F01L1/34; F01L13/00; F02D45/00
Domestic Patent References:
| JPH0217889A | 1990-01-22 | |||
| JP2001082192A | 2001-03-27 | |||
| JP2001254646A | 2001-09-21 | |||
| JP2000184774A | 2000-06-30 | |||
| JPH04105906U | 1992-09-11 | |||
| JPH0767377A | 1995-03-10 | |||
| JPH09322578A | 1997-12-12 | |||
| JPH11275886A | 1999-10-08 |
Foreign References:
| WO2002027182A1 | 2002-04-04 |
Attorney, Agent or Firm:
Masaki Hattori
Dai Yoshida
South Island Noboru
Dai Yoshida
South Island Noboru