To provide a compact and inexpensive pressure adjusting device of simple piping, capable of switching set pressure.
This pressure adjusting device includes a housing 21 for forming an introducing side fuel passage 37 and a discharge side fuel passage 32h, a partition wall-like pressure adjusting member 22 capable of opening a valve so as to communicate the fuel passages 37 and 32h in response to introducing fuel pressure, and a compression coil spring 27 capable of energizing the pressure adjusting member 22 in the valve closing direction, and adjusts fuel pressure in a fuel supply passage 15 to an ordinary set pressure level in response to the introducing fuel pressure. The pressure adjusting device includes a throttle element 39 for generating the throttling action on the upstream side of a specific position of the discharge side fuel passage 32h when a fuel discharge flow rate from the discharge side fuel passage 32h becomes a throttle set flow rate or more, and a passage control valve 45 for functioning as a relief valve for holding the fuel pressure on the upstream side of the specific position in a relief set pressure level when the fuel pressure on the upstream side of the specific position is increased to high pressure of exceeding the ordinary set pressure level.
SUDA SUSUMU
YOSHIDA YASUSHI
KAMIYA KATSUNORI
AISAN IND
| JP2010255458A | 2010-11-11 | |||
| JP2010185449A | 2010-08-26 | |||
| JP2010229913A | 2010-10-14 | |||
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| JP2010138827A | 2010-06-24 | |||
| JP2009144686A | 2009-07-02 | |||
| JP2011252545A | 2011-12-15 | |||
| JP2011252546A | 2011-12-15 | |||
| JP2012021436A | 2012-02-02 | |||
| JP2011252443A | 2011-12-15 | |||
| JP2012202382A | 2012-10-22 |
Eigarou Ariga