In some embodiments, a fuel rail for a two-stroke internal combustion engine includes a fuel rail body, a fuel inlet component integrated within the fuel rail body as a one-piece component and in fluidic contact with a fuel line, one or more fuel exit ports in fluidic contact with a cylinder of a combustion engine, and one or more fasteners adapted to secure the fuel rail body to a cylinder wall of the cylinder of the combustion engine

In some embodiments, a fuel rail for a two-stroke internal combustion engine includes a fuel rail body, a fuel inlet component integrated within the fuel rail body as a one-piece component and in fluidic contact with a fuel line, one or more fuel exit ports in fluidic contact with a cylinder of a combustion engine, and one or more fasteners adapted to secure the fuel rail body to a cylinder wall of the cylinder of the combustion engine

A damper spring structure of a high-pressure fuel pump includes: a housing of the high-pressure fuel pump in which a flow path for fuel is formed; a lid coupled to the housing and having an accommodation space between the housing and the lid; a damper spring installed in the accommodation space between the housing and the lid; and a damper installed in the damper spring so as to be supported by the damper spring, in which the damper spring is seated and supported on the lid and the housing in the accommodation space by contact points, and the lid is supported at a plurality of contact points.

A damper spring structure of a high-pressure fuel pump includes: a housing of the high-pressure fuel pump in which a flow path for fuel is formed; a lid coupled to the housing and having an accommodation space between the housing and the lid; a damper spring installed in the accommodation space between the housing and the lid; and a damper installed in the damper spring so as to be supported by the damper spring, in which the damper spring is seated and supported on the lid and the housing in the accommodation space by contact points, and the lid is supported at a plurality of contact points.

In some embodiments, a fuel rail for a two-stroke internal combustion engine includes a fuel rail body, a fuel inlet component integrated within the fuel rail body as a one-piece component and in fluidic contact with a fuel line, one or more fuel exit ports in fluidic contact with a cylinder of a combustion engine, and one or more fasteners adapted to secure the fuel rail body to a cylinder wall of the cylinder of the combustion engine.

In some embodiments, a fuel rail for a two-stroke internal combustion engine includes a fuel rail body, a fuel inlet component integrated within the fuel rail body as a one-piece component and in fluidic contact with a fuel line, one or more fuel exit ports in fluidic contact with a cylinder of a combustion engine, and one or more fasteners adapted to secure the fuel rail body to a cylinder wall of the cylinder of the combustion engine.

A pulse damper constructed in accordance to one example of the present disclosure includes a first housing member, a second housing member, a diaphragm and a valve. The first housing member defines a fuel chamber at an internal space thereof. The first housing member can further have a fuel inlet and a fuel outlet. The second housing member can define a pressurized chamber. The diaphragm can be disposed between the first and second housing. The diaphragm separates the fuel chamber and the pressurized chamber. The valve can be disposed on the second housing and be configured to selectively pass air into and out of the pressurized chamber corresponding to a desired predetermined pressure within the pressurized chamber. Increased pressure within the pressurized chamber will resist movement of the diaphragm into the pressurized chamber.

A valve seat member shared by an outlet valve and a pressure relief valve is provided between a pressurizing chamber and a high pressure path. A valve seat of the relief valve is provided on the side of the pressurizing chamber of the valve seat member. A valve seat of the outlet valve is provided in the valve seat member on the side of the high pressure path. One end of a relief path whose other end is open in the valve seat of the pressure relief valve is connected with the high pressure path, and one end of an outlet path whose other end is open in the valve seat of the outlet valve is connected with the pressurizing chamber.

A valve seat member shared by an outlet valve and a pressure relief valve is provided between a pressurizing chamber and a high pressure path. A valve seat of the relief valve is provided on the side of the pressurizing chamber of the valve seat member. A valve seat of the outlet valve is provided in the valve seat member on the side of the high pressure path. One end of a relief path whose other end is open in the valve seat of the pressure relief valve is connected with the high pressure path, and one end of an outlet path whose other end is open in the valve seat of the outlet valve is connected with the pressurizing chamber.

A damper for a high-pressure pump includes a housing and a cover that can be coupled to the housing to form a damping space. The cover has an elevation including a plurality of concave regions and a plurality of convex regions, wherein the concave and convex regions are arranged about a central region of the elevation. Each of the concave regions is arranged between two of the convex regions in order to scatter sound.