The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2004
Filed:
Apr. 02, 2003
Hiroshi Ohta, Oyama, JP;
Takanobu Akutsu, Oyama, JP;
Takashi Sakasai, Oyama, JP;
Shuki Akushichi, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
In a fuel injection apparatus , a fuel injection rate from which is controlled by a fuel pressure, a branch pipe comprising a tubular member with the tip end closed is provided between a second pressure control valve and a second pressure sensor . The branch pipe extends in a direction along a flow direction of the fuel just before the branch pipe , and has a capacity not less than one fifth of that of a fuel flow path between the second pressure control valve and a fuel chamber . When a pressure difference in the pressure control valve becomes larger and vibration of the fuel pressure is generated, the branch pipe absorbs and reduces the vibration. As the vibration of the fuel pressure is reduced, a stable fuel injection rate is realized.