A fuel pump includes an electric motor, a pump stage and a motor housing with a plastic section that holds a stator of the electric motor. The plastic section has a rim on the side facing the pump housing, when seen from the stator. A sheet metal sheath engages behind a rim of the motor housing and a rim of the pump housing by rolled portions so as to permit the fuel pump to be produced cost-effectively.

A fuel supply device includes a surface level detection device that detects a surface level of fuel through use of a float. A supply main body is placed in a fuel tank through an insertion opening and supplies the fuel to an outside. A surface level detection unit, which includes the float, is rotatable relative to the supply main body, and a rotational range of the surface level detection unit is set to include at least an inserting direction of the supply main body. A distal end part of the surface level detection unit, which is furthermost from an imaginary rotational center axis in the surface level detection unit, is placed on an upper side of an imaginary plane, which includes the imaginary rotational center axis and a center of gravity of the surface level detection unit, in a rotational direction of the surface level detection unit.

The invention relates to an inlet structure of a reservoir pot, comprising a base plate, which can be arranged in an operating medium tank with the formation of a receiving volume below the base plate, and a plurality of first elements which extend from the base plate, wherein the first elements are at least partially spaced apart from one another, and operating medium can flow between the first elements into the receiving volume and can flow out of the receiving volume, wherein the first elements present a greater flow resistance in the outflow direction than in the inflow direction.

Provided is a fuel tank made of resin, including: a fuel tank body that is enclosed by a bottom wall, side walls, and an upper wall, the fuel tank body including a first storage portion, a second storage portion, and a coupling portion, the coupling portion communicating an upper portion of the first storage portion and an upper portion of the second storage portion; a pump module disposed in the first storage portion; an open portion formed in the first storage portion; a strut provided in the first storage portion; a separator provided on the strut; a suction portion disposed in the second storage portion; a fuel transfer line that communicates the suction portion to the pump module; a holding portion and a provisional holding portion provided at the separator, the provisional holding portion being configured to removably hold the extra-length portion of the fuel transfer line.

A seal assembly for a propulsion system couples a plurality of manifolds of a manifold assembly of the propulsion system generally in fluid communication. Each of the manifolds defines a first end and a second end. The seal assembly includes a coupling member attaching the first end and the second end of the manifold assembly together in fluid communication; one or more seals disposed between the coupling member and at least one of the first end and the second end of the manifold; and a retainer adjacent to the coupling member and the seal. The retainer defines a radial wall and an axial wall, in which the radial wall is extended generally from one or more of the first end and the second end of the manifold alongside the coupling member and the seal, and the axial wall is extended generally from the radial wall alongside the coupling member and the seal.

A tank closing structure includes a tank body configured to store a liquid, a lid member that closes an opening formed in the tank body and has a liquid swelling property, and a holding ring that holds a flange portion of the lid member on the tank body. The tank closing structure further includes a deformation promoting portion for promoting deformation in which a radially central portion of the lid member is recessed inward of the tank body in response to the swelling of the lid member.

A fuel pump module includes: a pump unit; a lid provided to close an opening of a fuel tank; and a flexible fuel tube. The pump unit includes a fuel pump configured to pump fuel out of the fuel tank, a housing that holds the fuel pump, and a filter configured to filter the fuel. The lid has a discharge port to supply the fuel to outside of the fuel tank. The flexible fuel tube connects the pump unit and the discharge port. The housing includes a guide portion configured to fix the pump unit to a fixing member having a pair of rails provided in the fuel tank, and a separation regulating member configured to regulate the guide portion from separating from the pair of rails by engaging with the fixing member.

An engine device having gas injectors attached to an intake manifold fixed to a side surface of a cylinder head. A fuel gas injected from the gas injectors is premixed in the intake manifold, and the resulting gas is supplied to a plurality of cylinders and ignited by ignition devices. The intake manifold has a configuration in which a plurality of intake branch pipes communicating with the cylinders are branched from an intake collecting pipe at an air supply side. The intake branch pipes include bent portions. In the bent portions of the intake branch pipes, inside inner walls near the cylinder head are bent at an acute angle.

It is provided a multilayer tube having a layer containing a specific aliphatic polyamide composition and a layer containing a semi-aromatic polyamide composition which contains a semi-aromatic polyamide having a specific structure or a mixture thereof, and the both layers being disposed adjacent to each other, wherein the aliphatic polyamide composition contains an aliphatic polyamide having a melting point of a specific value or less, and a ratio of the number of the methylene groups to the number of the amide groups is a specific value or more, an aliphatic polyamide having an absolute value of a difference in solubility parameter SP values to that of the aliphatic polyamide being a specific range, and an elastomer polymer containing a constitutional unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.

A fuel distribution pipe that distributes and supplies fuel supplied from a fuel pipe to a plurality of fuel injection devices includes a pipe member configured to form a storage space for storing the fuel therein, and a connection member inserted into and joined to a tip end portion of the pipe member and having a through hole connected to the storage space. The connection member has an intermediate diameter portion adjacent to the storage space and a small diameter portion disposed on a side opposite to the storage space with respect to the intermediate diameter portion. The intermediate diameter portion has an inner diameter that is larger than an inner diameter of the small diameter portion and smaller than an inner diameter of the pipe member.