A fuel injection system for an engine of a vehicle includes a throttle body and an elastomeric injection manifold coupled to the downstream end of the throttle body. The injection manifold defines a fuel injector socket. The fuel injection system also includes a fuel injector receivable by the fuel…
The present invention relates to a fuel injector for injecting a fuel into a combustion chamber of an internal combustion engine, which comprises a feed opening for feeding in fuel, at least one outlet opening for outputting the fuel, a nozzle needle which is movable between a closed position, in…
A fuel pump includes a damper, a suction valve chamber, a pressurization chamber, a relief valve chamber, a relief valve mechanism, and a shock wave absorber. The shock wave absorber is provided in the relief valve chamber, and is disposed to face the relief valve holder on the downstream side in…
A fuel pump assembly comprises a plunger arranged to reciprocate within a plunger bore via a drive shaft, to perform a pumping cycle comprising a pumping stroke and a return stroke, the pumping stroke comprising movement of the plunger from a bottom dead centre (BDC) position to a top dead centre…
Various embodiments may include a high-pressure fuel pump with: a pump housing including a pressure chamber and a pump piston movable up and down within the pressure chamber along a movement axis; and a low-pressure damper including a damper volume arranged on the pump housing and damper elements…
Pump unit (10) for a high-pressure pump, comprising: - a pump housing (15) having a low-pressure inlet (17) through which a working medium is supplied to a working space (20) formed in the pump housing (15), and a high-pressure outlet (19) through which the working medium is discharged from the…
The invention relates to an overflow valve for a high-pressure pump in a fuel injection system of an internal combustion engine, comprising a housing (1) and a valve body (2) accommodated at least partially in the housing (1), wherein the valve body (2) has a central bore (3) in which a valve…
There is provided a fuel injection pump that enables white smoke in exhaust gas to be significantly reduced. A fuel injection pump (100) delivers, at high pressure, a fuel to be injected into a combustion chamber of a diesel engine and includes a delivery valve (10) disposed in the middle of a path…
A fuel pressure regulator (22) includes a housing (26) defining a fuel inlet (28) and a fuel outlet (30); a valve seat (32) located between the fuel inlet (28) and the fuel outlet (30), the valve seat (32) being centered about a valve seat axis (44); a valve member (34) centered about a valve…
A valve seat member (S, 8a, 200a) shared by an outlet valve (8) and a pressure relief valve (200) is provided between a pressurizing chamber (11) and a high pressure path (12); a valve seat (200s) of the pressure relief valve is provided on the side of the pressurizing chamber of the valve seat…
A valve seat member (S, 8a, 200a) shared by an outlet valve (8) and a pressure relief valve (200) is provided between a pressurizing chamber (11) and a high pressure path (12); a valve seat (200s) of the pressure relief valve is provided on the side of the pressurizing chamber of the valve seat…
A pulsation damper mounted in a fuel chamber (23) of a high-pressure fuel pump (20) is provided with a diaphragm (11) having a flat section (11a) displaced when fuel pressure is applied thereto, a pump cover (10) for supporting the diaphragm (11), and a gas chamber (12) formed by the diaphragm (11)…
Pulsation damper, in particular pulsation damper for a high-pressure fuel pump of a motor vehicle, comprising a damper housing, at least one first flexible bended damping element being formed as a hollow capsule having an internal volume. This pulsation damper allows handling a bigger throughput by…
A high-pressure fuel supply pump having a fuel relief path for connecting a high-pressure fuel path downstream of a discharge valve (8) for discharging fuel pressurized in a pressurizing chamber (11) to a low-pressure fuel path upstream of an inlet valve (30) or the pressurizing chamber, a check…
A fuel pump (4) for a direct injection system having: at least one pumping chamber (14); a piston (15) which is mounted sliding inside the pumping chamber (14) in order to vary cyclically the volume of the pumping chamber (14); an intake duct (17) connected to the pumping chamber (14) and regulated…
A fuel injector for use in an internal combustion engine, the fuel injector comprising a valve member that is moveable within a bore of an injection nozzle so as to be engageable with a valve seat region to control fuel delivery through one or more nozzle outlets, an injector body housing an…
The fuel injection unit for an internal combustion engine includes an electrically operated control valve through which a connection of the pump working chamber to a low pressure section (54) is controlled. The control valve during the feed stroke of the pump piston is closed to fuel injection, and…
The oscillation damper (1) for a hydraulic system has a damping chamber (30) connected to a pressure line (10) via a restrictor element (20). A valve (40) which opens in the direction of feed towards the damping chamber is connected parallel to the restrictor element. For the fluid in the hydraulic…
A fuel pump (10) for supplying fuel at high fuel pressures includes a stationary body (12) having a plurality of radial cylinders (42, 44) connecting with a central fuel chamber (64). Inlet and outlet passages (66, 78) communicate with the fuel chamber (64). Plungers (46, 48) are reciprocated in…
A fuel rail damper (10,110), comprising: a hollow member (12,112) having at least one wall (12a,12b,112a,112b) and at least one active portion (13), said hollow member defining a chamber (20) in conjunction with said at least one active portion, said chamber being open to atmospheric pressure.
The pressure-limiting valve (56) has a pressure side coupled to the high pressure region of the fuel injection system and a valve element (74) biased against a valve seat (72) and providing a hydraulic connection between an inlet and an outlet dependent on the pressure difference between them. The…
The fuel injection system has symmetric or asymmetric resistive attenuators (71-72, 91-92) and capacitive attenuators (73,93) to attenuate hydraulic waves, particularly waves at a frequency corresponding to the resonant frequency of the injection system. The electronic controller (20) takes account…
The pressure limiting fuel feed (56) for a motor vehicle has the pressure limiting valve in the fuel pump (30) of a fuel injection system. There is a compensating chamber (82) for short term pressure peaks on each feed pass of the fuel pump to prevent unwanted opening of the pressure limiter (35)…
The pump has three cylinders (17) set in the housing (23) 120 degrees apart. Each piston has a hemispherical inner end (59) engaging a shoe which engages on a triangular ring (31) on an eccentric shaft. Two galleries (51a,51b) connect the working ends of two cylinders. The first has a side branch…
The invention relates to a simple structured highpressure fuel pump. A fuel pump comprises a reciprocably-supported cylinder (20), a pressurizing chamber (12) using part of the outer surface of the cylinder as the wall surface which move to change the internal volume, a fuel intake passage (10)…
The pump assembly (10) has a shaft (38) with an eccentric (40) driving pistons (42-46) in cylinders (48-52). Each piston has an inlet valve (54-58) and an outlet valve (60-64). Two cylinders 180 degrees out of phase draw low-pressure fuel (18) from a first pipe junction (80) and deliver…
The object of the present invention is to provide an electromagnetic valve for a variable discharge fuel supply apparatus with improved relief property and high-responsiveness, a small electromagnetic valve, reduced electric current consumption and increased responsiveness, wherein the valve seat…
The first compartment (39) is hydraulically-connected with a fuel return line (45).
The limiter (56) has a housing (58) with intake (70) and outlet (86), connected by a tensioned element (82) at a set pressure differential. The limiter has a bypass volume, in direction of flow in front of the tensioned element. A hydraulic resistance, esp. a flow throttle (74), is positioned in…
The fuel system (10) has a fuel pump (20). This delivers the fuel (18) from the fuel tank (16), coupled via a fuel line (22) to a second fuel pump (30), with a pressure setting device (48) controlling the pressure on its output side. The fuel line between the fuel pumps incorporates a pressure va…