A sealing system comprising a cylinder head (105), a coupler (138), a fuel injector line (124), a seal retainer (128), and a seal (162). The coupler (138) is positioned in the cylinder head (105), and the fuel injector line (124) extends into the coupler (...

A fuel supply device comprises a return flow channel (39) for merging a first return flow channel (25) with a second return flow channel (27) at a merging point (D) and returning the flow channel to a fuel tank (3). A back pressure valve (29) is provided t...

A fuel supply device (10) connects a fuel tank (11), which stores a fuel necessary for power of an engine (30), to a hand-operating pump inlet (31) of the engine (30), connects an inlet opening (121) of a filter can (12) that includes the inlet opening (12...

The device has an engine feed pump (3) communicating with a container (1). A fuel filter (5) is interposed in a power supply conduit (9) downstream from the pump. A return circuit (14, 15) is connected to the conduit downstream from the filter. A control u...

The fuel injection device has a feed pump (10) that delivers fuel from a reservoir (12) to suction side of the high pressure pump (16). The fuel is conveyed to a high-pressure region (18) through the high pressure pump. An injector (14) is arranged to supp...

The present invention is intended to provide a fuel return structure in which fuel in a return pipe (37) containing air bubbles is returned to a position apart from a fuel pump (34) so that the influence of the air bubbles is restrained. A vehicle fuel pum...

An electric low-pressure pump (6) delivers fuel from the fuel tank (2) to a camshaft-driven high-pressure pump (12). Excess fuel is normally returned to the tank via a shutoff valve (30) from the fuel line (10). If the heat of the engine via the high volum...

A high-pressure fuel pump, high-pressure fuel filter and fuel pressure regulator are housed inside a case having resistance to corrosion and rust caused by salt water damage, shielded from the outside atmosphere. A position above a fuel level of a fuel tan...

A fuel injection system for an IC engine has a high pressure fuel pump (5) feeding a common rail (3). Surplus and leaked fuel, from the high pressure circuit, is returned to the input of the high pressure pump using a separate pump (12) and non return valv...