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, 1998
Filed:
May. 03, 1996
Gerd Huber, Munich, DE;
Institut fur Motorenbau Prof. Huber GmbH, Munich, DE;
Abstract
An injection nozzle for use in a common-rail system includes a nozzle body with an actuator piston. In the closed condition of the nozzle the nozzle body bears against a seat and upstream of the seat delimits a nozzle chamber communicated with the high-pressure line of the common-rail system. A working chamber of the actuator piston is communicated with the high-pressure line by way of a feed throttle means, the active surface area of the actuator piston being larger than the surface area of the nozzle body which is effective in the nozzle chamber. A return line leads from the working chamber through a return valve. An actuating means is operated by an electrical signal for actuating the valve member of the return valve. The actuating means is a means which displaces the return valve member in analog relationship with the electrical signal so that the return valve forms in the return line a throttle of variable cross-section.