Title:
RELIEF VALVE DEVICE, AND HIGH PRESSURE PUMP USING THE SAME
Document Type and Number:
Japanese Patent JP2018031450
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a relief valve device capable of setting relief pressure to be high while reducing its physical size.SOLUTION: A fuel discharge relief portion 40 has: a first intermediate member 42 which has a first flow path 423 capable of circulating a high pressure fuel; a second intermediate member 43 which has a second flow path 433; a discharge valve member 45; a discharge valve spring 46; a relief valve member 47; and a relief valve spring 48. The discharge valve spring 46 energizing the discharge valve member 45 so as to make the discharge valve member 45 and a discharge valve seat 441 abut on each other, abuts on a discharge valve side bottom wall surface 491 of a bottom portion 49 integrally formed with the second intermediate member 43 at one end. The relief valve spring 48 energizing the relief valve member 47 so as to make the relief valve member 47 stored in a second relief chamber 430 of the second intermediate member 43 and a relief valve seat 425 of the first intermediate member 42 abut on each other, abuts on a relief valve side bottom wall surface 492 of the bottom portion 49 at one end.SELECTED DRAWING: Figure 3
Inventors:
KOSHIMOTO SHINICHIRO
SUZUKI TAKAHITO
SUZUKI TAKAHITO
Application Number:
JP2016165544A
Publication Date:
March 01, 2018
Filing Date:
August 26, 2016
Export Citation:
Assignee:
DENSO CORP
International Classes:
F16K11/22; F02M59/36; F02M59/44; F02M59/46; F02M69/54; F16K17/04; F16K27/00; F16K27/02
Domestic Patent References:
| JP5418697B2 | 2014-02-19 | |||
| JP2014224523A | 2014-12-04 | |||
| JPS5338027U | 1978-04-03 |
Attorney, Agent or Firm:
Masaki Hattori
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