Invention Grant
- Patent Title: High-pressure fuel pump having a piston, a damper, and a pressure relief valve having a valve body and a spring
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Application No.: US16130204Application Date: 2018-09-13
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Publication No.: US10941740B2Publication Date: 2021-03-09
- Inventor: Kyung Chul Han , Jin Sung Kim , Eun Woo Nah , Chun Ky Hong
- Applicant: HYUNDAI KEFICO CORPORATION
- Applicant Address: KR Gyeonggi-do
- Assignee: HYUNDAI KEFICO CORPORATION
- Current Assignee: HYUNDAI KEFICO CORPORATION
- Current Assignee Address: KR Gyeonggi-do
- Agency: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- Agent Peter F. Corless
- Priority: KR10-2017-0121091 20170920
- Main IPC: F02M59/46
- IPC: F02M59/46 ; F02M63/00 ; F02M55/04 ; F04B49/035 ; F04B49/24 ; F02M59/02 ; F02M59/10 ; F02M59/36

Abstract:
A high-pressure fuel pump includes a housing including a chamber, an inlet flow passage to draw fuel into the chamber, and a discharge flow passage to discharge fuel out of the chamber. The high-pressure fuel pump further includes a piston disposed in the housing and configured to compress fuel, a sleeve coupled to the housing and configured to support the piston and form a space for storing fuel, a discharge valve disposed in the discharge flow passage and configured to open when a pressure of fuel stored in the chamber is equal to or greater than a first pressure, and a pressure relief valve disposed in a relief flow passage that communicates with the discharge flow passage and the space. The pressure relief valve is configured to open when a pressure of fuel supplied into the relief flow passage is equal to or greater than a second pressure.
Public/Granted literature
- US20190085807A1 HIGH-PRESSURE FUEL PUMP Public/Granted day:2019-03-21
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