Class / Patent application number | Description | Number of patent applications / Date published |
123188900 | Guide, lubricant, or coolant | 8 |
20090095247 | Intake valve for lessening accumulation of high boiling fraction from fuel - An intake valve for a combustion engine includes a valve guide having a bore and a lower end surface surrounding the bore, and a valve stem having an upper valve stem portion moving up and down within the bore of the valve guide and a valve at the lower end of the stem. A valve guide shield is carried by the valve stem below the upper valve stem portion that moves up and down within the bore to shield the upper valve stem portion from high boiling fraction material from the fuel to lessen the accumulation of high boiling fraction between the valve stem and the valve guide. | 04-16-2009 |
20100050973 | CORROSION RESISTANT VALVE GUIDE - 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. | 03-04-2010 |
20100077983 | ENGINE VALVES - The present invention includes an engine valve including a stem portion and a head portion disposed at one end of the stem portion. A heat insulation layer is formed on a surface of the head portion. A heat conductive layer is formed on a surface of the stem portion. | 04-01-2010 |
20100206260 | Method for preventing exhaust valve seat recession - A method for preventing or inhibiting exhaust valve seat recession in a natural gas fueled internal combustion engine is disclosed. The method involves lubricating the engine with a lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity, and (b) a minor amount of a natural gas engine oil additive package, wherein the lubricating oil composition is substantially free of each of any zinc compounds and alkaline earth metal salts of a condensation product of an alkylene polyamine, an aldehyde and a substituted phenol. | 08-19-2010 |
20130255617 | ENGINE HAVING OIL PUMP - In an engine having an oil pump wherein an oil filter is incorporated into the oil pump without allowing the oil pump to become large in size. An oil pump and a hydraulic line changeover valve including a spool valve are disposed so as to have axes extending in parallel with each other. The oil pump has a plate-shaped oil filter disposed at a discharge port thereof. The plate-shaped oil filter is curved arcuately along an outer periphery of a pump rotor as viewed from a pump axial direction. | 10-03-2013 |
20140261280 | ACTIVE PRESSURE RELIEF VALVE SYSTEM AND METHOD - An active pressure relief valve system and method for lubricating an internal combustion engine includes a reservoir, a pump for pumping fluid from the reservoir through the internal combustion engine, and an active relief valve fluidly disposed downstream from the pump for both variably adjusting pressure of the fluid within the internal combustion engine and limiting the pressure of the fluid within the internal combustion engine to a maximum pressure threshold. The active relief valve is configured to variably and electronically adjust the pressure of the fluid within the internal combustion engine when commanded by a controller, and further configured to mechanically limit the pressure of the fluid within the internal combustion engine to a maximum pressure threshold. | 09-18-2014 |
20140360453 | VALVE GUIDE INSERT WITH FRICTIONAL PRE-BROACH RETENTION FEATURE - A valve guide insert for lining and relining a valve guide bore in an internal combustion engine includes a one-piece, thin-walled, cylindrically-shaped metallic tube made from reformable bearing material having first and second ends and an intermediate portion. An inwardly tapered portion is disposed at the first end, wherein an end diameter of the inwardly tapered portion is less than an outer diameter of a valve guide bore, and wherein the outer diameter of the intermediate section is greater than an inner diameter of a valve guide bore. A longitudinal slit is included having a stepped portion along a length of the longitudinal slit. An interference portion is disposed proximate the second end, wherein the interference portion is configured to substantially secure the valve guide insert within a valve guide bore. | 12-11-2014 |
20160186620 | MULTI-MATERIAL VALVE GUIDE SYSTEM AND METHOD - A valve guide for a reciprocating engine including a passageway that may receive a shaft of a poppet valve and an inner wall defining the passageway and having a first surface and a second surface, the first and second surfaces forming part of the passageway. The first surface includes a first material and the second surface includes a second material. The first and second materials are different. The valve guide also includes at least one mechanical lock between the first and second materials, wherein the at least one mechanical lock is disposed within the inner wall along the passageway. | 06-30-2016 |