Fuel-injection valve
AssigneeRobert Bosch GmbH
InventorsGuenter Dantes, Detlef Nowak
Life of this patent
Estimating the term…
Abstract
Fuel injector (1), in particular, a fuel injector (1) for the direct injection of fuel into a combustion chamber of an internal combustion engine, includes an actuator (10) for actuating a valve needle (3), the valve needle (3) having on an injection-side end a valve-closure member (4) which forms a sealing seat together with a valve-seat surface (6), which is formed on a valve-seat member (5). Fuel channels (35) are arranged in a valve needle guide (31), connected to the valve-seat member (5) or designed as a single piece with it, in several rows (34, 34a) circumferentially in the valve needle guide (31), at least one row (34a) of fuel channels (35) being arranged, in the resting state of the fuel injector (1), above a guide line (33) of the valve-closure member (4).
Claims10
A fuel injector (1), in particular, for the direct injection of fuel into a combustion chamber of an internal combustion engine, having an actuator (10) for actuating a valve needle (3), the valve needle (3) having, on an injection-side end, a valve-closure member (4), which forms, together with a valve-seat surface (6), which is formed on a valve-seat member (5), a sealing seat, and having fuel channels (35), which are arranged in a valve needle guide (31) connected to the valve-seat member (5) or designed as a single piece with it,
- wherein the fuel channels (35) are arranged in a plurality of rows (34, 34a) circumferentially in the valve needle guide (31), at least one row (34a) of fuel channels (35) being arranged, in the resting state of the fuel injector (1), above a guide line (33) of the valve-closure member (4).
Dependencies are inferred from the claim text.