Abstract: Often in diesel engines, there are two or more fuel filters that provide intense filtration of the fuel prior to injection of the fuel into the engine. However, the two or more fuel filters consume a considerable amount of space within the vehicle which may prevent all of the fuel filters from being attached to the engine. The present invention is a multiple fuel filter pump module that includes a module housing. The module housing is formed to include a pump housing and a dual fuel filter head portion. A fuel pump is positioned within the pump housing, and more than one detachable fuel filter assemblies are attached to the multiple fuel filter head portion. The module housing can be attached to an engine housing.

Abstract: Over aeration of fuel has been identified as a problem in some fuel injection systems. For instance, engineers have learned that it is desirable to reduce the amount of air in the fuel circulation plumbing of a pump and line fuel injection system in order to reduce timing retardation of the fuel injection and avoid engine power loss. A fuel conditioning module addresses this problem by separating out the air from the fuel before reaching the fuel injectors. The fuel conditioning module includes an inlet cavity separated from an outlet cavity by a baffle. An inlet passage opens to the inlet cavity, and an outlet passage opens to the outlet cavity at locations elevationally below the top of the baffle. A vent passage opens to the outlet cavity at a location elevationally above the top of the outlet passage. When the fuel air mixture flows over the baffle, the air is directed into the vent passage and the relatively pure fuel is directed to the outlet passage for delivery to the fuel injectors.

Abstract: Over aeration of fuel has been identified as a problem in some fuel injection systems. For instance, engineers have learned that it is desirable to reduce the amount of air in the fuel circulation plumbing of a pump and line fuel injection system in order to reduce timing retardation of the fuel injection and avoid engine power loss. A fuel conditioning module addresses this problem by separating out the air from the fuel before reaching the fuel injectors. The fuel conditioning module includes an inlet cavity separated from an outlet cavity by a baffle. An inlet passage opens to the inlet cavity, and an outlet passage opens to the outlet cavity at locations elevationally below the top of the baffle. A vent passage opens to the outlet cavity at a location elevationally above the top of the outlet passage. When the fuel air mixture flows over the baffle, the air is directed into the vent passage and the relatively pure fuel is directed to the outlet passage for delivery to the fuel injectors.

Abstract: A cast piston which includes a metal insert and a combustion bowl, with the metal insert defining a sharp undercut structure at an upper portion of the combustion bowl. The sharp undercut structure of the insert contains combustible gases and helps improve emissions. The metal insert also strengthens the head of the piston. The cast piston is fabricated by positioning the metal insert in a casting mold and casting a piston in the mold. The final shape of the combustion bowl is produced by a machining process which forms the sharp undercut structure on the insert.