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:
Jan. 15, 2008
Filed:
Mar. 05, 2003
Shinya Nozaki, Higashi-Matsuyama, JP;
Toshifumi Noda, Higashi-Matsuyama, JP;
Daijo Ushiyama, Higashi-Matsuyama, JP;
Teruaki Ishikawa, Higashi-Matsuyama, JP;
Yukihiro Hayasaka, Higashi-Matsuyama, JP;
Shinya Nozaki, Higashi-Matsuyama, JP;
Toshifumi Noda, Higashi-Matsuyama, JP;
Daijo Ushiyama, Higashi-Matsuyama, JP;
Teruaki Ishikawa, Higashi-Matsuyama, JP;
Yukihiro Hayasaka, Higashi-Matsuyama, JP;
Abstract
In the DME fuel supply device for a diesel engine, the time necessary to retrieve DME fuel remaining in the injection system after stopping the diesel engine into the fuel tank can be reduced. In a non-injection state, a three-way valve () is controlled to be OFF to form a communication passage in the direction indicated by the arrow B and a two-way valve () is controlled to be ON. DME fuel delivered from a feed pump () is delivered to an aspirator (), passed from an inlet () to the outlet () thereof and returned to a fuel tank (). That is, the DME fuel circulates via the aspirator. A vapor-phase pressure delivery pipe switching solenoid valve () is controlled to be ON and opened so that flow can pass through a vapor-phase pressure delivery pipe () connecting the vapor-phase () in the fuel tank () and the inlet of the fuel gallery (). DME fuel in a liquid state remaining in the fuel gallery (), an overflow fuel pipes () and () is delivered under pressure to a suction port () by the high pressure of the vapor-phase ().