Abstract: In order to remove oil from the engine, i.e. to evacuate lubricant oil from the crankcase (1), the crankcase and the rotating parts (6, 2, 3) therein are designed so that a centrifugal flow is generated in the crankcase (1) and is used to separate the engine oil from the air that surrounds it. Preferably, only a small gap (8) remains between the outermost partially cylindrical rotating parts, in particular the counterweight (6), and the inner wall of the cylindrical crankcase (1). The oil is removed through an outlet (10) that extends tangentially out of the crankcase (1).

Abstract: An assembly for installation on an internal combustion engine for facilitating engine cleaning and oil change and method for using the same which includes an oil filter mounting adapter interposed between the multichannel oil filter unit and the engine and a fluid egress assembly mounted in the drain opening of the oil pan. The oil filter mounting adapter is configured to be readily mountable in engine compartments having significant space constraints. The oil filter mounting adapter is composed of a sandwich adapter and a fluid coupling assembly. The fluid coupling assembly includes a quick connect nipple which is releasably matingly engageable with mating fitting on an external fluid supply source. The fluid egress fitting also includes a quick connect nipple releasably matingly engageable with a mating fitting on a fluid removal hose or conduit.

Abstract: A lubricant supply system is provided for the induction system of a marine propulsion engine. The lubricant supply system delivers lubricant to the a flow controlling valve in the induction system upon shutting down of the engine and can be operated manually at the discretion of a user. The lubricant serves to reduce the likelihood of post-operation corrosion of the valve, particularly at the sliding support surfaces of the valve and also provides lubricant from start-up operation.

Abstract: A bearing supporting a crankshaft provided in a connecting rod comprises an overlay in contact with a throw, a metal layer on the outside of the overlay and a back metal on the outside of the metal layer. The hardness of the metal layer is lower than that of the back metal, and the thermal conductivity of the overlay is higher than that of the throw. The metal layer having a lower hardness than the back metal improves the fit of the bearing with the throw, and sharp increase of frictional losses and rise of lubricating oil temperature at high engine rotation speeds are thereby prevented. The overlay having a high thermal conductivity absorbs heat from the minimum thickness oil film formed between the inner surface region of the throw and the bearing, and after the bearing has passed through the minimum thickness oil film, the absorbed heat is again discharged to the lubricating oil.

Abstract: A combustion engine comprising a lubricated bearing mountable on the shaft of the engine, and a race/seal bearing plug engagable therewith and engagable with a housing member of the engine. The race/seal bearing plug comprises lubricant passage therein dispensing lubricant medium to the bearing, with the bearing discharging lubricant to a lubricant slinger which serves to centrifugally direct the lubricant to a peripheral collection channel for recirculation to the lubricant flow passages in the bearing plug.

Abstract: A generator powered by an internal combustion engine is fueled from a source of biogas. The biogas flows through a filter which removes hydrogen sulfide and mercaptans and through a coalescer to remove water vapor. A regulator controls the biogas pressure supplied to the fuel intake of the engine carburetor, and acid-neutralizing oil is injected into the engine intake each time the engine is shut down to protect the engine from acidic constituents in the biogas.

Abstract: An internal combustion engine having a variable valve timing mechanism with a hydraulic control that is mounted on the front of the cylinder head for ease of accessibility and for ease of conversion of the existing engine. The engine includes an oil filter, oil cooler, and coolant pump, which are disposed and driven in a way so as to maintain short flow paths and permit internal conduits to be formed in the engine so as to avoid the possibility of leakage. The variable valve timing mechanism is controlled by hydraulic pressure supplied by the lubricating system, and a control valve assembly is mounted on the cover for the variable valve timing mechanism with the control passages being formed integrally in this cover. In addition, one of the timing chains may be easily accessed for adjustment without removing the cover through the removal of a bolt that holds an accessory mounting bracket to the engine.

Abstract: The system provides a lubricating fluid between a wall which defines a cavity and a member which passes through the cavity. The system includes a passageway for supplying lubricating fluid to the cavity at a velocity and a fluid outlet for introducing the fluid from the passageway to the cavity such that a centrifugal force, corresponding to the velocity of the fluid supplied from the passageway, acts on the fluid flowing from the fluid outlet to cause the fluid to have a laminar flow over the cavity wall.

Abstract: The method of operating machinery, the internal working elements of which are contained within a closed lubricating system and operating an internal combustion engine, in the presence of an electrical field, wherein the internal working elements are contacted during operation by the lubricating medium herein described. That lubricating medium comprises a major portion of an insulating oil having a hydrophobic nature such as natural or synthetic engine oil and a minor portion of an additive composition. The additive composition comprises an admixture of a metal soap, of the type often used as a thickening agent for greases; and fine particulate solid material of a hydrophilic nature, of the type often used in extreme pressure greases such as graphite and molybdenum disulfide.

Abstract: Disclosed is a lubricating system for lubricating moving parts in a crank case of a four-stroke-cycle engine. The lubricating system comprises an oil tank for holding oil, an oil passage connected to the oil tank and an engine crank chamber, an oil supply means for supplying fine particles of oil held in the oil tank to the moving parts in the crank chamber via the oil passage, and an oil removing means for removing the fine particles of oil applied to the moving parts in the crank chamber, from the crank chamber without forming oil accumulation. To supply the fine particles of oil to the moving parts in the crank chamber, the oil of a liquid form is thrown to impinge against the moving parts in the crank chamber or is mixed with a gas entering the crank chamber.

Abstract: A tool for tapping a container and removing fluid from the container includes a modified bit having a tip configured to bore a hole through a wall of the container, such as an oil filter casing or a tank wall, and a threaded frustoconically-shaped shank configured to engage the wall material defining the hole and to draw the tool into sealing engagement with the wall. A valve assembly is attached to the tip remote end of the modified bit. The valve assembly includes a hex-shaped surface for engaging a drill socket so that the tool can be rotated as it is pressed against the wall. A passageway extends through the shank for communicating fluid from the container, and a valve is located in the valve assembly in communication with the passageway to control fluid flow through the passageway. A cap fits over the valve assembly at the tip remote end of the tool during non-use and when the tool is being used to bore through the wall to protect the tool.

Abstract: In an accessory unit drive arrangement of an internal combustion engine the accessory unit is mounted on the engine such that its drive shaft is arranged in axial alignment with an engine-operated shaft. The drive shaft is coupled to the engine-operated shaft by a coupling structure which includes a pin which projects axially eccentrically from the end face of the engine-operated shaft and engages a carrier mounted on the drive shaft of the accessory unit. The engine-operated shaft is supported by a friction bearing and a lubricant collecting space is in communication with the friction bearing so as to collect lubricant leaking from the bearing for the lubrication of the coupling structure.

Abstract: In a crank chamber venting arrangement for an internal combustion engine including a crankcase defining a crank chamber and having integrally formed in an end wall thereof an oil separating chamber disposed at the top end of the crank case, a crank chamber venting passage extending between the crank chamber and the separating chamber and a return passage extending between the separating chamber and the crank chamber and including a siphon, the crank chamber venting passage and the oil return passage including the siphon are open at the end wall of the crankcase and are closed by a cover and the separating chamber is open at the top and closed by a cylinder head mounted on the crankcase such that the passages and the separating chamber can be formed integrally during casting of the crankcase without the use of sacrificial cores.

Abstract: Bulk and complexity of a lubrication system incorporated in an internal combustion engine (10) having an engine block (11), a power shaft (12) mounted in the engine block for rotation about a power shaft axis, a combustion chamber (18), a valve arrangement (20) for controlling intake to and exhaust from the combustion chamber (18), a cam device (22) for actuating the valve arrangement (20), and a pressurized oil lubrication system (15) is avoided in a construction wherein the cam device (22) and the pressurized oil lubrication system (15) include a ring cam (24) journalled on the block (11). The ring cam (24) has an outer cam-shaped periphery (26) for actuating the valve arrangement (20), and an inner periphery (35) configured as a ring gear (36).

Abstract: An environmentally sound apparatus for automatically extracting and injecting lubricating fluids is disclosed. The apparatus includes one or more sources of lubricating fluid, a waste fluid tank, and a source of compressed air, all with associated fluid-level sensing status switches, as well as other status switches for vacuum and low battery voltage. Signals from such status switches and from a fluid flow monitoring pulse meter are relayed to a central processing unit which operates through a front control panel to control a valved single pump and a plurality of valved lines in fluid communication with the single pump, and to display error messages to front control panel indicators when appropriate. Waste fluid is evacuated, from a crankcase oil pan of an internal combustion engine through one computer-determined arrangement of open valves and fluid lines, to the waste tank.

Abstract: A fluid reservoir assembly for providing a supply of a lubricating fluid for an internal combustion engine, specifically for use in marine environments. The assembly includes an outer shell for containing and protecting the assembly, a ventless flexible liner for housing a supply of lubricating fluid, where the flexible liner is located within the outer shell, and an orifice and conduit that extends through the ventless flexible liner and the shell for permitting the introduction of lubricating fluid into the ventless flexible liner and for permitting the removal of lubricating fluid therefrom. The fluid reservoir assembly is constructed and arranged such that the ventless flexible liner is in a generally collapsed state until a lubricating fluid is introduced therein through the orifice.

Abstract: An oil passage structure in an engine includes a first oil passage and a second oil passage. The second oil passage has a hydraulic pressure which is different from that in the first oil passage. The first and second oil passages are provided in engine body in an arrangement where they intersect each other when viewed in projection onto a plane parallel to an axis of the first oil passage. In order to enable the space for disposition of both the oil passages to be reduced to a necessary minimum to provide a reduction in size of the engine body, a cylindrical partition member having annular seal members mounted on its outer surface at opposite ends is fitted into the first oil passage. Thus, an annular intermediate chamber is defined between the outer surface of the partition member and an inner surface of the first oil passage and is sealed at its opposite ends by the seal members.

Abstract: An oil pan has a partition for regulating the transverse movement of oil and baffle plates for regulating the vertical movement of oil. The oil pan is divided into an oil pan upper portion and an oil pan lower portion, the oil pan upper portion is formed with a lower portion attaching face on the lower face of an upper-side bottom, a partition for partitioning the oil level is formed by raising a part of the upper-side bottom surrounded by the lower portion attaching face, a first oil chamber is provided on one side of the partition and a second oil chamber is provided on the other side of the partition, attaching bosses are formed at the upper part of the partition to install an upper portion baffle plate, and air holes are formed at the upper part of the partition close to the attaching bosses to provide communication between the first oil chamber and the second oil chamber.

Abstract: A wiring harness support and under valve cover oil deflector formed from a single sheet metal blank that is connected to each individual injectors, by a single bolt, of a Hydraulically-actuated Electronically-controlled Unit Injector (HEUI) system for a diesel engine. This combined wiring harness support and oil deflector aligns itself when mounted in the proper tapped holes in the unit injectors.

Abstract: An oil changer comprises at least piping 5, 9, 10, along which an oil pump 12 and switching valves 8a, 8b are disposed, and first and second oil reservoirs 3, and 4. Used oil in an oil use location is recovered into the oil reservoir 4 via the piping, while unused oil in the first oil reservoir 3 is supplied into the oil use location via the piping. In this case, a flowmeter 11 for measuring an oil flow rate, as well as air sensors 6a, 6b for detecting the existence of air in used and/or unused oil when the air happens to exist in a flow of the used or unused oil and for outputting a predetermined signal, are provided at intermediate positions along the length of the piping 5, 9, and 10. Furthermore, a control section is provided into which the flow rate signal from the flowmeter 11 is inputted and which normally counts the number of the flow rate signals, but does not count them when the predetermined signal is inputted.

Abstract: A lubricating system and method of operating the system for an internal combustion engine wherein the amount of lubricant supplied to the engine from a positive displacement engine driven pump is varied by selectively delivering lubricant from the pump to the engine or bypassing the lubricant back to the return of the pump. The amount of lubricant supplied is varied by changing both the duty ratio of the lubricant supply and the duration of engine supply in response to a map of engine conditions. Various control routines are disclosed and in each the lubricant supplied to the engine is monitored so that once a finite amount of lubricant is supplied, lubricant is not supplied again to the engine until that amount previously supplied has been consumed.

Abstract: An improved lubrication system for a two-stroke engine having a lubrication path from an oil sump directly to an induction valve assembly for noise reduction. The oil sump is divided into two chambers with a restricted passage therebetween to ensure lubrication of transmission gears upon startup while reducing drag during operation. A cross-drilled lubrication passage through each crankshaft throw terminates in a second passage proximate a dead-end plug, the second passage being in communication with the piston rod bearing. Each piston skirt includes at least one axial groove in registration with an oil supply passage. Circumferential grooves distribute the oil around the piston skirt from the axial grooves. The pistons may include ceramic top layers for heat insulation to increase the compression ratio possible by raising the ring positions. The engine incorporates an air/oil mixture separator within a balancer shaft chamber and air from the chamber is directed to the intake system.

Abstract: A lubricating system for a machine such as a two-cycle internal combustion engine including a reciprocating pump that pumps a finite amount of lubricant during a single pumping stroke and a stepper motor for operating the pump through incremental phases of movement each less than a stroke. The lubricant requirements of the machine are determined and the driving increments are adjusted so as to provide a pumping stroke when the lubricant consumption of the machine reaches the output of the pump. Various arrangements of stepper motors and control arrangements are disclosed for controlling the amount and timing of the lubricate delivery.

Abstract: A stationary or movable object suitable for holding a fluid can have the fluid sampled unobserved, and the sample is separate from the working and/or storage system(s) of the object. For example, an engine oil collection apparatus effectively collects engine oil during mimic of a normal oil change procedure, and allows for collection of samples without the sample going through the crankcase of the engine. The collected fluid, for example, the oil, can be set aside and/or analyzed for its composition afterwards.

Abstract: A process and an assembly for supplying a liquid lubricant to points of a reciprocating piston engine which are to be lubricated and which include at least running surfaces of a piston-cylinder tube unit of the reciprocating piston engine. The reciprocating piston engine has a piston and a cylinder. According to the process, the lubricant in at least one conditioning device is united with a gaseous transport medium. In the conditioning device, a lubricating mixture is formed including small liquid particles of lubricant carried by the gaseous transport medium. At least one of the lubricating mixture and the lubricant is passed with the gaseous transport medium through a plurality of supply ducts corresponding to the points to be lubricated. The gaseous transport medium and excess lubricant are drawn away through at least one drain disposed in a region of the points to be lubricated.

Abstract: An arrangement of oil passages to a valve system can reduce the number of parts required thereby lowering the manufacturing cost. The oil passages to a valve system of an internal combustion engine are integrally formed with the cylinder block and a cylinder head. These oil passages are arranged along the outer surfaces on a side opposed to a cylinder liner and a combustion chamber relative to a valve system drive transmission.

Abstract: An opposed-cylinder internal-combustion engine, includes a cylinder block and crankcase which is longitudinally divided in the center of the crankshaft bearing. A bearing support is connected with the crankcase by way of cylinder head bolts. The cylinder block and crankcase has a joint vertical junction plane with the bearing support. Both bearing support halves are, on the one hand, connected with one another by way of bearing block screws and, on the other hand, the bearing support is held by way lo of cylinder head bolts between the crankcase halves arranged at both sides of the bearing support while forming oil ducts. At the same time, cylinder heads can be fastened on the crankcase by way of the screws.

Abstract: This invention relates to a reciprocating internal combustion engine having a cylinder crankcase in which a crankshaft is rotatably supported, to which crankshaft there is flexibly joined at least one connecting rod having a piston guided in a cylinder liner, the crankcase having fittings of an oil circulation system and various attached parts in a number independent of the number of cylinders. The crankcases with various numbers of cylinders can be cast, machined and assembled at the lowest possible cost because groups of fittings and attached parts have spacings to one of the two ends of the various cylinder crankcases (1) that remain constant.

Abstract: An induction system for a marine propulsion engine wherein the induction system has a flow-controlling valve. A lubricant supply system is provided for delivering lubricant to the induction system upstream of the valve and toward the sliding support surfaces of the valve so as to reduce the likelihood of corrosion, particularly if the fuel supply washes the flow-controlling valve of lubricant during engine running.

Abstract: A control unit for circulating lubricating oil to vehicle engine parts comprising an oil tank for collecting lubricating oil; a hydraulic circuit which directs the lubricating oil to the appropriate parts and returns the lubricating oil to the oil tank; an oil pump provided in the hydraulic circuit for circulating the lubricating oil therein; at least one sub-oil tank which can contain an appropriate amount of lubricating oil; at least one hydraulic pipe which connects the sub-oil tank with the hydraulic circuit; and an oil pump which transfers, via the hydraulic pipe, lubricating oil from the sub-oil tank to the hydraulic circuit and from the hydraulic circuit to the sub-oil tank. The unit may also have a cooling bypass for diverting the lubricating oil from the hydraulic circuit to oil cooling means and means for regulating the amount of oil circulated in the hydraulic circuit and in the cooling bypass.

Abstract: An environmentally sound apparatus and method for automatically extracting and injecting lubricating fluids is disclosed. The apparatus includes one or more sources of lubricating fluid, a waste fluid tank, and a source of compressed air, all with associated fluid-level sensing status switches, as well as other status switches for vacuum and low battery voltage. Signals from such status switches and from a fluid flow monitoring pulse meter are relayed to a central processing unit which operates through a front control panel to control a valved single pump and a plurality of valved lines in fluid communication with the single pump, and to display error messages to front control panel indicators when appropriate. Waste fluid is evacuated, from a crankcase oil pan of an internal combustion engine through one computer-determined arrangement of open valves and fluid lines, to the waste tank.

Abstract: An oil-cooled or oil-air-cooled reciprocating internal combustion engine having a cylinder crankcase provided with oil fittings which are manufacturable at a low cost and are accessible for servicing, adjustment and replacement from the exterior of the engine.

Abstract: A hydraulic pump driven by an internal combustion engine is an externally pressurized radial piston pump, which is internally driven by an eccentric. The hydraulic pump is integrated within the cylinder head of an internal combustion engine.

Abstract: A fluid container draining device for draining fluid from a fluid container, such as an oil filter, in a controlled manner. It has a front threaded screw with a sharpened drill tip. It has an internal channel communicating between an opening at the forward end of the screw and a rear region of the threaded screw. A fluid valve is positioned at the rear region of the screw in fluid connection with the channel. The fluid valve provides fluid flow control between the interior of the fluid container and the outside of the fluid container. The fluid valve has an internally threaded front region which screws into the externally threaded rear region of the screw, and an externally threaded rear region, onto which a fluid evacuation line is to be attached. A turning portion for turning the device into the wall of the container is located on the device.

Abstract: A motor vehicle containing a two-cycle, crankcase compression, internal combustion engine having direct lubricating systems for supplying lubricant to the sliding surfaces of the piston and cylinder bore for each cylinder of the engine, separate pumps for delivering lubricant to the crankshaft bearings associated with each cylinder of the engine and a system for delivering lubricant to the engine for the remaining components through the induction system. The accessories for the engine including its induction and exhaust system are laid out so as to facilitate transverse front wheel drive mounting of the engine in the vehicle.

Abstract: An internal combustion engine comprising a cylinder block which defines a cylinder, a crankshaft bearing supported at least in part by the cylinder block, a crankshaft which is rotatably supported by the crankshaft bearing, a piston slidably housed in the cylinder, a connecting rod having one end connected to the piston and having an opposite end connected to the crankshaft, a cylinder head mounted on the cylinder block, a camshaft at least partially supported by the cylinder head for rotation relative thereto, an oil pump having an outlet, a first oil conduit communicating between the oil pump outlet and the crankshaft bearing, an oil filter communicating with the first oil conduit for filtering oil only in the first oil conduit, and a second oil conduit communicating between the oil pump outlet and the camshaft, oil in the second oil conduit being unfiltered between the pump outlet and the camshaft.

Abstract: An improved lubrication system for a two-stroke engine having a lubrication path from an oil sump directly to an induction valve assembly for noise reduction. The oil sump is divided into two chambers with a restricted passage therebetween to ensure lubrication of transmission gears upon startup while reducing drag during operation. A cross-drilled lubrication passage through each crankshaft throw terminates in a second passage proximate a dead-end plug, the second passage being in communication with the piston rod bearing. Each piston skirt includes at least one axial groove in registration with an oil supply passage. Circumferential grooves distribute the oil around the piston skirt from the axial grooves. The pistons may include ceramic top layers for heat insulation to increase the compression ratio possible by raising the ring positions. The engine incorporates an air/oil mixture separator within a balancer shaft chamber and air from the chamber is directed to the intake system.

Abstract: A lubricating system and method of operating the system for an internal combustion engine wherein the amount of lubricant supplied to the engine from a positive displacement engine driven pump is varied by selectively delivering lubricant from the pump to the engine or bypassing the lubricant back to the return of the pump. The amount of lubricant supplied is varied by changing both the duty ratio of the lubricant supply and the duration of engine supply in response to a map of engine conditions. Various control routines are disclosed and in each the lubricant supplied to the engine is monitored so that once a finite amount of lubricant is supplied, lubricant is not supplied again to the engine until that amount previously supplied has been consumed.

Abstract: An alternator of an internal combustion engine is cooled by oil circulated from an engine crankcase. The oil is sprayed directly on the rotor and stator components. Two pumps deliver oil to and from the alternator, respectively.

Abstract: In an arrangement for supplying cooling oil to the piston of an internal combustion engine which has intake and exhaust valve drive and also fuel injection pump drive components, a pipe is mounted on the engine housing in communication with a cooling oil supply passage and has a free end extending under the piston for spraying cooling oil to the underside of the piston, at least one additional discharge opening is provided on the pipe which is directed toward the intake and exhaust valve drive components and the fuel injection pump drive components.

Abstract: A lubricating oil feeding apparatus of an internal combustion engine can adjust an amount of oil fed to each bearing and provides for a reduced number of parts for a shaft portion structure of a starter driven gear. In the engine, a balancer shaft is synchronously rotated with a crankshaft. The crankshaft and the balancer shaft are rotatably supported on a split surface of a crankcase by plain bearings. Parallel oil passages communicate with oil holes provided in the plain bearings for exclusively feeding lubricating oil to at least the crankshaft and the balancer shaft. The opening areas of the oil holes provided in the plain bearings of the balancer shaft are smaller than the oil holes provided in the plain bearings of the crankshaft. An outer portion of a starter one-way clutch can also be integrally fitted on a rotor. A driven gear of the starter is connected to a starter drive gear of a starter motor by intermediate gears. The diameter D.sub.

Abstract: A pair of opposed pistons (17) are interconnected by a connecting link assembly (19) defining opposed parallel guide surfaces (24), transverse to the axes of the pistons. A drive block (28) is rotatably mounted on a crankpin (16) of a crankshaft by a bearing shell (71a, 71b) and has parallel bearing plates (31) slidably engaged with the guide surfaces (24). Lubricating oil is supplied to ports (59) in the bearing plates, just before each plate is substantially loaded, from leading and trailing drillings (56L and 56T) in the crankpin (16), ports (76, 77) in the bearing shell and passages (73, 74, 75) in the drive block.

Abstract: System for facilitating the changing of the oil and the oil filter in internal combustion engines, the system being comprised of an external unit for extracting the spent oil and filling in the new oil, and oil filter support which provide for its operation at a remote position from the engine unit while facilitating the changing thereof and a system of hydraulic conduits for connecting the filter support to the engine unit and the crankcase to the external auxiliary unit.

Abstract: An engine oil capacitor which allows a larger volume of oil to be used in an internal combustion engine without reducing fuel economy or increasing engine package size. Oil flow through the normal oil drainback holes is partially restricted, resulting in a substantial quantity of oil being temporarily stored in an engine compartment, such as the camshaft compartment, during engine operation.

Abstract: An internal-combustion engine which has an intermediate shaft extending in parallel to the crankshaft, comprises a basin which is arranged between the shafts and which guides lubricating oil released by the crankshaft drive into an oil sump. This basin has struts which project downwardly away and which surround the intermediate shaft in such a manner that it is secured against the admission of lubricating oil of the crankshaft drive. As a result, this lubricating oil arrives in an oil tank in a largely unfoamed state.

Abstract: An improved lubrication circuit for a V-block, cam in block, General Motors type internal combustion engine. The improvement is provided by forming additional oil passages in the V-block between the left side oil passage and some of the cam bearings. The cam bearings corresponding to the new oil passages are rotated to match their oil lubrication ports to the new oil passages to allow lubrication of those bearings by oil supplied by the left side oil passage. The improvement reduces the load requirements of the right side oil passage and increases the oil flow in the left side oil passage. The improvement results in: engine operation at a more balanced temperature; reduced frictional losses; improved high speed lubrication; improved idle speed oil pressure; improved engine life; and improved fuel efficiency.

Abstract: Two embodiments of outboard motors having four-cycle internal combustion engines with the crankshaft of the engine rotating about a vertically extending axis in a crankcase chamber formed at the front of the engine. A main oil gallery extends along the crankcase member and receives oil from an oil filter mounted on the crankcase member at the front of the engine.

Abstract: Engine cleaning is affected at different times while the engine is running. Apparatus for cleaning internal combustion engines cyclically draws cleaning fluid from a reservoir by a pump, flushes the fluid through the block of the internal combustion engine, and returns the fluid to the reservoir. Tank selection valves alternately couple one of a pair of reservoir tanks to the pump, to the exclusion of another tank. One tank can be dedicated for use to clean gasoline powered internal combustion engines to preserve the characteristic color of the cleaning fluid, while the other tank can be utilized to clean diesel powered internal combustion engines. The system is operated through first flushing and soaking periods and through second flushing and soaking periods. A first tank in a pair is used to initially pump and recover cleaning fluid during the first flushing and soaking periods.

Abstract: A rotary piston internal combustion engine has a casing including a central portion and two side portions. The central portion has a trochoidal inner mantle surface. An eccentric shaft extends through the casing and has an eccentric portion with a friction bearing. Main bearings for supporting the eccentric shaft in the casing are provided. A rotary piston, triangular in cross-section and having an interior chamber and axial edges with sealing members, is mounted on the friction bearing of the eccentric portion. The sealing members remain at all times in contact with the trochoidal inner mantle surface during rotation. A lubricating system for lubricating and cooling the rotary piston includes an oil cooler, a closed oil reservoir, and an oil filter. The lubricating system has a first pump and substantially axially extending channels provided in at least one of the side portions in the vicinity of the eccentric shaft.

Abstract: A two-part oil filter mounting adapter for use with internal combustion engines. The filter mounting adapter includes a universal sandwich adapter and a nipple adapter that engages with a filter mounting boss at one end and an oil filter unit at the other end. The sandwich adapter has a passage along an outside wall for a fluid coupling assembly that is capable to be releasably connected to a suitable fluid supply hose. The sandwich adapter is rotatably mounted on a hub of the nipple adapter so that the passage is positionable to any direction.