Title:
ROLL-OVER VALVE
Document Type and Number:
Japanese Patent JP2017066894
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a roll-over valve for suppressing initial leakage of fuel.SOLUTION: A roll-over valve (ROV) 4 is provided in a ventilation passage of a fuel tank 2. The ROV 4 includes a case 8 which provides a valve seat 16. The ROV 4 has a movable valve element 31. The movable valve element 31 is supported to be movable between a valve close position in which the movable valve element 31 is seated on the valve seat 16 and a valve open position in which the movable valve element 31 is separated from the valve seat 16. The movable valve element 31 generates a load which varies in accordance with a tilt angle of the fuel tank 2. The ROV 4 has a spring 41. The spring 41 is arranged to energize the movable valve element 31 to the valve close position, and receives the load. When the fuel tank 2 is tilted to exceed a leakage start angle, fuel reaches the valve seat 16. The spring 41 positions the movable valve element 31 at the valve close position in an angle range beyond a preliminary angle smaller than the leakage start angle. Accordingly, initial leakage can be suppressed.SELECTED DRAWING: Figure 1
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Inventors:
IIZUKA NAOKI
KIMURA AKIHIRO
KIMURA AKIHIRO
Application Number:
JP2015189972A
Publication Date:
April 06, 2017
Filing Date:
September 28, 2015
Export Citation:
Assignee:
KYOSAN DENKI KK
International Classes:
F02M37/00; B60K15/035; F16K24/00
Domestic Patent References:
| JPH04108034A | 1992-04-09 | |||
| JPH042524A | 1992-01-07 | |||
| JP2008163762A | 2008-07-17 | |||
| JP2005180264A | 2005-07-07 |
Foreign References:
| US5156178A | 1992-10-20 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo
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