High-pressure fuel reservoir
AssigneeRobert Bosch GmbH
InventorsKurt Frank, Friedrich Boecking
Life of this patent
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Abstract
The invention relates to a high-pressure fuel reservoir for a common rail fuel injection system of an internal combustion engine, having a plurality of connection openings, in particular connection openings for delivering and removing fuel and connection openings for sensors and valves and so forth. To increase the strength of the high-pressure fuel reservoir, the high-pressure fuel reservoir is equipped with a pulsation damping device.
Claims10
A high-pressure fuel reservoir for a common rail fuel injection system of an internal combustion engine, said reservoir comprising a housing defining a pressure chamber, a plurality of connection openings (5-10) in the housing including, connection openings for delivering and removing fuel and connection openings for sensors and valves, and a pressure pulsation damping device (14) in the high-pressure fuel reservoir, wherein the pulsation damping device (14) is formed by interference geometries and wherein the interference geometries are formed by at least one twisted metal sheet (14), a shaft (16) with pierced transverse walls (17) disposed on it, at least one sheet-metal strip (22) with perforations (23, 24), and/or a tube (30) with perforations (31-33).
A high-pressure fuel reservoir for a common rail fuel injection system of an internal combustion engine, said reservoir comprising a housing defining a pressure chamber, a plurality of connection openings (5-10) in the housing including, connection openings for delivering and removing fuel and connection openings for sensors and valves, and a pressure pulsation damping device (14) in the high-pressure fuel reservoir, wherein the pulsation damping device is formed by at least one escape piston (50) and a spring in the high pressure reservoir, the escape piston being movable back and forth counter to the spring (51) and wherein the escape piston (50) is provided with a through hole (52).
Dependencies are inferred from the claim text.