Title:
THROTTLE VALVE
Document Type and Number:
WIPO Patent Application WO/2001/077505
Kind Code:
A1
Abstract:
A throttle valve (10) disposed in a cylindrical bore (2) so as to cross the center axis of the bore and supported rotatably by a throttle shaft passing through the bore, wherein a bitten zone (10a) (diagonally shaded area) on the external surface of the throttle valve (10) near the area crossing the throttle shaft is removed by cutting so as to avoid an interference with the bore (2), and the maximum value $g(d) max of a recess is shown by the expression (2); instead of forming such a recess, height differences (20b) and (20c) may be formed as shown in Fig. 3 or a thick wall part (30b) may be formed as shown in Fig. 4, whereby an increase in intake air volume at the time when the valve is fully closed and in a small opening area of the valve can be suppressed.
Inventors:
KARASAWA TOSHIO (JP)
ASAKURA HIROFUMI (JP)
HATSUMI YOUNOSUKE (JP)
ASAKURA HIROFUMI (JP)
HATSUMI YOUNOSUKE (JP)
Application Number:
PCT/JP2001/002831
Publication Date:
October 18, 2001
Filing Date:
March 30, 2001
Export Citation:
Assignee:
MIKUNI KOGYO KK (JP)
KARASAWA TOSHIO (JP)
ASAKURA HIROFUMI (JP)
HATSUMI YOUNOSUKE (JP)
KARASAWA TOSHIO (JP)
ASAKURA HIROFUMI (JP)
HATSUMI YOUNOSUKE (JP)
International Classes:
F02D9/10; (IPC1-7): F02D9/10
Foreign References:
| JPS6186540U | 1986-06-06 | |||
| JPS63235629A | 1988-09-30 | |||
| JPH10121994A | 1998-05-12 | |||
| JPH041672U | 1992-01-08 | |||
| JPH01187326A | 1989-07-26 |
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