Title:
HIGH-PRESSURE PUMP
Document Type and Number:
Japanese Patent JP2016138528
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce expansion of a sliding clearance and reduce leak amount from a compression chamber via the sliding clearance without increasing the weight of a high-pressure pump.SOLUTION: A cylinder body 3 of a high-pressure pump 1 includes: metallic cylinder portion 27 formed of a steel material to have a cylindrical shape and having an inner peripheral surface serving as a sliding surface with respect to a plunger 2; and a resin cylinder portion 28 formed of fiber-reinforced resin to have a cylindrical shape and fitted to the outer periphery of the metallic cylinder portion 27. Thus, the cylinder body 3 has a two-layer structure comprising an inner layer formed of the steel material and an outer layer formed of the fiber-reinforced resin. Compared to the steel material, the fiber-reinforced resin has a lighter weight and higher Young's modulus. Therefore, without increasing the weight of the cylinder body 3, the rigidity can be improved as a whole, and expansion of a sliding clearance 20 can be reduced.SELECTED DRAWING: Figure 2
Inventors:
KATSURA RYO
Application Number:
JP2015014839A
Publication Date:
August 04, 2016
Filing Date:
January 28, 2015
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02M59/44
Domestic Patent References:
| JP2005337061A | 2005-12-08 | |||
| JP2001304069A | 2001-10-31 | |||
| JP2014148981A | 2014-08-21 | |||
| JP2009191731A | 2009-08-27 | |||
| JP2003274626A | 2003-09-26 | |||
| JPS58146879U | 1983-10-03 | |||
| JPS58131355A | 1983-08-05 | |||
| JPH10306760A | 1998-11-17 | |||
| JP2004197865A | 2004-07-15 |
Attorney, Agent or Firm:
Kenji Ishiguro
Shinji Hase
Naoko Ikuta
Shinji Hase
Naoko Ikuta
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