FUEL RAIL Russian patent published in 2024 - IPC F02M55/02 F02M69/46 

FIELD: machine building.

SUBSTANCE: invention can be used in fuel feed systems of internal combustion engines. Fuel rail comprises housing 1, a receiver made in the form of a channel formed in housing 1, nozzle ports 7 communicating through throttling holes 9 with the receiver, high-pressure pipeline union 6, plug 4, guide 5 of the perforated tube, an insert installed in the receiver coaxially to its longitudinal axis, as well as a damping device. Insert is formed by rigid cylindrical perforated tube 3, hydraulically interconnected with the internal channel of fuel pressure control nozzle 8, as well as shell 2 formed from porous or fibrous material, enclosing the outer walls of tube 3. Plug 4 and guide 5 are configured to locate tube 3 coaxially to the longitudinal axis of the receiver. Rail damping device is formed by tube 3 perforation and insert 2 shell porous or fibrous structure, insert shell outer surface and receiver forming channel walls, as well as segments of the receiver cavity, formed by the outer surface of the insert and the walls of the channel forming the receiver, located between throttling holes 9 and between the inner channel of the high-pressure pipeline union 6 and throttling holes 9.

EFFECT: invention ensures reduction of fuel pressure pulsations in the fuel rail receiver.

2 cl, 4 dwg