Abstract: An impeller for a fluid pump includes a central hub, an inner portion located adjacent to the central hub and an outer portion, the outer partially being radially outward from the inner portion. An array of vanes is located between the inner portion and the outer portion. At least one slot is formed within the outer portion. The at least one slot faces an angle of rotation of the impeller.

Abstract: A pressure control valve has a non-uniformly tapered valve bore that has an increasing diameter as it extends downstream. An interface angle, defined in part between a valve ball and the valve bore in the area of the smallest gap between them, increases as the valve ball is increasingly displaced away from a valve seat of the valve bore.

Abstract: A pressure control valve has a non-uniformly tapered valve bore that has an increasing diameter as it extends downstream. An interface angle, defined in part between a valve ball and the valve bore in the area of the smallest gap between them, increases as the valve ball is increasingly displaced away from a valve seat of the valve bore.

Abstract: A low cost bypass pressure regulator for liquid flowing preferably in a returnless fuel system for a combustion engine communicates operatively with a conduit which flows fuel from a fuel pump of the fuel system to at least one fuel injector of the combustion engine. The pressure regulator preferably has a valve head disposed at least in-part in a valve chamber defined by a circumferentially continuous inner surface carried by a valve body and which transitions radially outward with respect to a center axis and in a downstream direction. The valve head preferably tapers radially inward with respect to the center axis in an upstream direction and from a peripheral outer edge of the head.

Abstract: A fuel filter and vapor separator arrangement having at least one layer of liquid fuel permeable material defining at least one substantially enclosed cavity. The permeable material has at least one opening to provide fluid communication of liquid fuel within the cavity with an inlet of a high pressure fuel pump outside the cavity. A jet pump and/or fuel vapor vent is arranged relative to the cavity to facilitate the elimination of fuel vapor flowing to the high pressure fuel pump.

Abstract: A pressure control valve has a non-uniformly tapered valve bore that has an increasing diameter as it extends downstream. An interface angle, defined in part between a valve ball and the valve bore in the area of the smallest gap between them, increases as the valve ball is increasingly displaced away from a valve seat of the valve bore.