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:
Feb. 03, 2004
Filed:
Mar. 18, 2002
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A common rail fuel injection apparatus includes a piston that increases the injection pressure, and a chamber that controls the position of the piston so as to control the injection pressure. An input constriction that sets an amount of flow of the fuel that enters the control chamber, and an output constriction that sets an amount of flow of the fuel that exits from the chamber are formed. The input constriction is connected to a common rail by a valve. By opening and closing the valve, the injection pressure of the fuel injected from an injector is changed. Therefore, the injection pressure of fuel injected from the injector can be changed as requested without a need to process high precision component parts.