Abstract: The geared feed pump has a housing, in which a pump chamber is formed between a housing part and a cap part, and a pair of gear wheels, driven to rotate and meshing with one another on their outer circumference, are disposed in the pump chamber and pump a feed medium into a pressure chamber along feed conduits formed between the outer circumference of the gear wheels and circumferential walls of the pump chamber. On its inside toward the face ends of the gear wheels, the cap part has an indentation with a cross section that is at least as large as the cross section of the face ends of the gear wheels. Between the cap part and the face ends of the gear wheels, a platelike cover element covering the indentation is disposed; at least when the geared feed pump is not in operation, the cover element rests with initial tension on the face ends of the gear wheels and can be deflected into the indentation, away from the face ends of the gear wheels.

Abstract: A fuel delivery pump for a fuel injection pump for internal combustion engines, including a pair of gears that mesh with each other and are driven to rotate in a pump chamber. The pair of gears deliver fuel from an intake chamber connected to a storage tank, along a supply conduit that is formed between the end face of the gears and the circumference wall of the pump chamber, into a pressure chamber connected to the fuel injection pump. A conduit is provided that connects the intake chamber to the pressure chamber. The conduit can be connected to a ventilation device, and that upstream and downstream of the ventilation device, a pressure valve is provided for a directed fuel flow in the conduit.

Abstract: A feed pump having a pair of gears that mesh with each other and are driven to rotate in a pump chamber. The gears supply a feed medium from an intake chamber connected to a storage tank, along a supply conduit constituted between the end face of the gears and the circumferential wall of the pump chamber. The feed medium is pumped into a pressure chamber, and a bypass conduit that connects the intake chamber to the pressure chamber can be opened by means of a pressure valve disposed in the bypass conduit. The bypass conduit that contains the pressure valve is disposed in a housing cover that closes the housing of the feed pump. The housing cover can be rotated 180 degrees in order to reverse the flow of the fluid medium within the pump.

Abstract: The invention relates to a fuel delivery pump for a fuel injection pump for internal combustion engines, with a pair of rotating displacing elements, which deliver fuel from an intake chamber connected to a storage tank, along a supply conduit that is formed between the end face of the rotating displacing elements and the circumference wall of the pump chamber, into a pressure chamber connected to the fuel injection pump, and with a bypass conduit, which is integrated into a housing of the fuel delivery pump and connects the intake chamber to the pressure chamber, and which is opened by means of a pressure valve disposed in it, wherein the intake chamber is closed with a check valve that operates counter to the fuel delivery direction.

Abstract: A fuel delivery pump for a fuel injection pump for internal combustion engines, which includes a pair of gears that mesh with each other and are driven to rotate in a pump chamber. The gears deliver fuel from an intake chamber connected to a storage tank, along a supply conduit that is formed between the end face of the gears and the circumference wall of the pump chamber, into a pressure chamber connected to the fuel injection pump. A conduit is integrated into a housing of the fuel delivery pump and connects the intake chamber to the pressure chamber. The conduit can be opened by means of a pressure valve disposed in it, wherein the pressure valve is functionally connected to a throttle valve that throttles the fuel supply into the intake chamber as a function of the controlled pressure on the control valve via the pressure chamber.

Abstract: A feed pump having a pair of gears in a housing that mesh with each other and are driven to rotate in a pump chamber. The pair of gears supply fuel from an intake chamber connected to a storage tank, along a supply conduit in the housing constituted between the end face of the gears and the circumference wall of the pump chamber, and into a pressure chamber. In order to introduce lateral forces acting on the gears directly into the pump housing the gears are each supported on a housing pin, which is embodied as being of one piece with the housing of the feed pump and protrudes into the housing.

Abstract: The invention relates to a fuel feed pump for a fuel injection pump for internal combustion engines, having a pair of gear wheels that mesh with one another and are driven to rotate in a pump chamber. The pair of gear wheels pump fuel out of an intake chamber that communicates with a supply tank along a feed conduit, formed between the end face of the gear wheels and the circumferential wall of the pump chamber, into a pressure chamber that communicates with the fuel injection pump. One gear wheel is secured to a shaft is driven to rotate by means of a drive element that engages the shaft, wherein the drive element can be connected to the shaft by an overload safety device.

Abstract: Fuel feed pump for a fuel injection pump for internal combustion engines, with a pair of intermeshing gearwheels, the said pair being driven in rotation in a pumping chamber (3), which gearwheels feed fuel out of a suction space (13), connected to a supply tank, along a feed duct (17), formed between the end faces of the gearwheels and the circumferential wall of the pumping chamber (3), into a pressure space (15) connected to the fuel injection pump, and with a bypass duct (25) which connects the suction space (13) to the pressure space (15) and in which a pressure valve (31) controlling the maximum fuel pressure in the pressure space (15) is arranged. At the same time, according to the invention, the bypass duct (25) is integrated into the housing (1) of the fuel feed pump in such a way that the pressure valve (31) can be inserted into the housing (1) of the feed pump completely via the inlet orifice (19) of the suction space (13).