Abstract: A turbocharger bypass system and method for minimizing the occurrence of oil seepage from the bearing housing into the compressor housing as a result of a pressure differential across the bearing housing and the compressor housing. A bypass system with a pressure dependent check valve is connected to the inlet air passage of a turbocharged engine. When the pressure in the inlet air passage drops to below atmosphere or a predetermined level of depression, the check valve opens to allow a flow of atmospheric air into the inlet air passage, thus minimizing or eliminating the pressure differential generated as a result of a vacuum in the inlet air passage during motoring conditions, or when an exhaust valve downstream of the turbocharger is closed, such as during engine braking. The bypass system is applicable to both single stage and dual stage turbocharged internal combustion engines.

Abstract: In one embodiment, a fuel injector assembly is described. The fuel injector assembly includes a terminal assembly that electrically connects a plurality of wire cables to a plurality of control valve solenoids. The control valve solenoids can include, for example, a needle control valve solenoid and/or an intensifier control valve solenoid. The terminal assembly can be physically configured with a radius profile that prevents excessive bending of the wire cables. A connector bridge may allow for the offsetting of a first pair and a second pair of electrical rods that are used to provide electrical current from the terminal assembly to the needle control valve solenoid. Alternatively, the intensifier control valve solenoid may have an aperture, and an armature of an associated poppet valve may have a slot, that are configured to receive the placement of at least a portion of the pair of electrical rods.