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. 09, 1996
Filed:
May. 27, 1994
Masanobu Matsusaka, Handa, JP;
Susumu Sugimoto, Obu, JP;
Motonobu Akaki, Anjo, JP;
Yasutoshi Yamada, Aichi, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A fuel injection valve comprises a valve body having a injection port at an edge thereof, a needle valve member interposed in the valve body and opening or closing the injection port, a first spring member for energizing the needle valve member in a one direction, a piezoelectric device being a piezoelectric element having a cylindrical body mounted on the interior of the valve body in a condition that a positive or negative voltage is applied, and controlling the needle valve member in the direction of opening the injection port by applying a voltage changed over positively or negatively at the time of fuel injection while pushing the needle valve member in the opposite direction in response to the energizing direction of the first spring member, and a second spring member for providing a larger energizing force than the energizing force of the first spring member described above and being interposed between the valve body and the piezoelectric device described above. The fuel injection valve described above has a high durability and a large amount of fuel injection and is compact.