Title:
デュアル流れ燃料ライン、すなわち二系統流れ燃料経路を持つディーゼル噴射システム
Document Type and Number:
Japanese Patent JP4796102
Kind Code:
B2
Abstract:
A double walled fuel line connects diesel fuel injectors in a common rail system. An inner line carries high pressure fuel from a fuel pump to the fuel injectors. Low pressure return fuel flows back through an outer fuel line which acts as a return line. The double walled line reduces the number of separate pipe connections needed in the system and provides protection against loss of high pressure fuel from the system as well as a simplified method for detecting fuel leaks. Monitoring fuel pressure in the low pressure line allows a fuel pressure sensor to detect leaks in the system by comparing fuel pressure in the low pressure line against typical line pressure. Higher than normal pressure in the low pressure line indicates a leak in the high pressure line. Lower than normal pressure indicates a leak in the low pressure return line.
Inventors:
Paul Gottemoller
Michael bee gotzek
Michael bee gotzek
Application Number:
JP2008206953A
Publication Date:
October 19, 2011
Filing Date:
August 11, 2008
Export Citation:
Assignee:
Electro-Motive Diesel Incorporated
International Classes:
F02M37/00; F02M55/00; F02M55/02; F02M63/02
Domestic Patent References:
| JP11062765A | ||||
| JP5195906A | ||||
| JP55142665U |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Osamu Hoshino
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Osamu Hoshino