Abstract: A dual thrust bearing is disclosed. The dual thrust bearing may have a shell. The shell may extend from a compressor end to a turbine end opposite the compressor end. The shell may have a shell bore extending from the compressor end to the turbine end. The shell bore may be configured to receive a journal bearing. The shell may also have a first thrust bearing face disposed adjacent the compressor end. In addition, the shell may have a second thrust bearing face disposed adjacent the turbine end.

Abstract: A compressor impeller assembly is disclosed. The compressor impeller assembly may have a compressor impeller having an impeller bore. The compressor impeller assembly may further have an insert screwed into the impeller bore, the insert having a threaded insert bore. The compressor impeller assembly may also have a shaft having a threaded shaft bore. In addition, the compressor impeller assembly may have a stud. The stud may have a first threaded portion engaged with the threaded insert bore. The stud may also have a second threaded portion engaged with the threaded shaft bore.

Abstract: A turbine bearing and seal assembly is disclosed. The turbine bearing and seal assembly may have a turbine cartridge. The turbine cartridge may have a compressor end and a turbine end opposite the compressor end. The turbine bearing and seal assembly may also have a bearing attached to the turbine cartridge. The bearing may be disposed between the compressor end and the turbine end. The turbine bearing and seal assembly may further have a seal collar attachable to a shaft. The seal collar may be disposed within the turbine cartridge adjacent the turbine end.

Abstract: A compressor seal assembly is disclosed. The compressor seal assembly may have a seal ring having a seal ring bore. The compressor seal assembly may also have a collar. The collar may have a cap portion having a first bore configured to receive an impeller. The cap portion may be disposed in the seal ring bore. The collar may further have a journal portion having a second bore configured to receive a shaft connectable to the impeller. The collar may also have a slinger disposed between the cap portion and the journal portion. The slinger may have a generally cylindrical shape and may have a front face. The slinger may also have a rear face opposite the front face. Further, the slinger may have a cylindrical side surface extending between the front face and the rear face. In addition, the slinger may have a groove disposed on the side surface.

Abstract: A ventilation system is disclosed for use with an engine having a crankcase The ventilation system may have a first source of compressed air and a second source of compressed air. The ventilation system may also have a plurality of oil separators, each in separate communication with the crankcase. The ventilation may system further have a distribution manifold in fluid communication with the plurality of oil separators, and a shuttle valve fluidly connected between the distribution manifold and the first and second sources of compressed air.

Abstract: An cylinder head assembly is disclosed. The cylinder head assembly may include a cylinder head having a stepped bore associated with a valve opening. The cylinder head assembly may also include an insert configured to engage the stepped bore, and a cooling passage at least partially formed by the insert and the stepped bore.

Abstract: The present invention generally relates to a new valve guide for use in an exhaust valve system. Specifically, the invention is related to a valve guide that prevents acidic corrosion between the valve and the valve guide. The valve guide includes a number of contact portions, which engage the channel that is formed in the cylinder head near the exhaust port. The valve guide also includes a recess portion, situated in relation to a water jacket and between the contact portions. The recess portion and contact portions are sized and shaped to maintain the surface temperature of the valve guide to prevent condensation of acidic gases between the valve stem and the valve guide.

Abstract: In accordance with the present invention, a lash adjuster is provided for minimizing stress on a valve train system in the event of its failure. Specifically, the present invention lash adjuster is for use in a valve train system having a cam for actuating the opening and closing of a valve, where the cam has a select size and shape for determining the velocity or acceleration of the valve's opening and closing. The present invention lash adjuster generally comprises a housing having a base and a plunger positioned within the housing at a select axial clearance from the base. This clearance is generally sized and shaped such that, in the event of lash adjuster failure, a select maximum velocity or acceleration of valve opening and closing is maintained, thereby minimizing stress on the valve train system.

Abstract: The present invention is directed to an engine exhaust valve timing and lift system for a uniflow two-stroke locomotive diesel engine having an EGR system. This system and method reduces NOx emissions while attaining desired levels of cylinder scavenging and mixing. Specifically, the present invention engine exhaust valve system controls the timing, lift and velocity of exhaust valve opening and closing in order to attain the desired NOx emission levels and the desired levels of cylinder scavenging and mixing.

Abstract: The present invention generally relates to a new valve guide for use in an exhaust valve system. Specifically, the invention is related to a valve guide that prevents acidic corrosion between the valve and the valve guide. The valve guide includes a number of contact portions, which engage the channel that is formed in the cylinder head near the exhaust port. The valve guide also includes a recess portion, situated in relation to a water jacket and between the contact portions. The recess portion and contact portions are sized and shaped to maintain the surface temperature of the valve guide to prevent condensation of acidic gases between the valve stem and the valve guide.