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:
Apr. 12, 2005
Filed:
May. 15, 2003
Shogo Hashimoto, Kanagawa, JP;
Ryoji Ehara, Kanagawa, JP;
Hiroshi Mizui, Kanagawa, JP;
Tadashi Nichogi, Kanagawa, JP;
Junichiro Takahashi, Kanagawa, JP;
Shogo Hashimoto, Kanagawa, JP;
Ryoji Ehara, Kanagawa, JP;
Hiroshi Mizui, Kanagawa, JP;
Tadashi Nichogi, Kanagawa, JP;
Junichiro Takahashi, Kanagawa, JP;
Mikuni Corporation, Tokyo, JP;
Abstract
An electronically controlled fuel injection device includes a plunger pump constituted by a cylinder, a plunger is slidably mounted within the cylinder to form a pressure chamber, and a solenoid coil for driving the plunger. At a lower section of a body that encases the plunger pump, an intake section is coupled to the pressure chamber to cause intake of fuel into the pressure chamber upon operation of the plunger. At an upper section of the body, a return section is arranged to return surplus fuel to a fuel tank. A circulation passage branches off from the intake section and is provided between the cylinder and the solenoid coil for guiding a portion of the fuel toward the return section. With this arrangement, penetration of vapor into the fuel injection device is suppressed, and an inexpensive and highly durable electronically controlled fuel injection device is provided.