An engine is described having a crankcase, a liner and a head assembly. The crankcase is split along a plane defining a two part crankcase, where fluid passages are passing through only one of the crankcase portions, so as to not require crossing the split line. A connecting rod also includes a tapered end, and the piston has a complementary carrier receiving the connecting rod.

The present invention discloses an engine oil pan, which includes a cylinder block, wherein a plurality of arc-shaped grooves are disposed on the second end surface of the cylinder block along the axial direction of a crank shaft; the arc-shaped grooves form arc-shaped bulges in a sunk portion on the first end surface of the cylinder block; the arc-shaped bulges divide the sunk portion into first space and second space; a platform is disposed inside the sunk portion of the cylinder block; and the height of the platform is lower than the height of the arc-shaped bulges. The technical solution employed by the present invention enables lubricating oil in the engine oil pan to flow more effectively, and enables the lubricating oil in the oil pan to be utilized more effectively when the engine is used in any position.

An engine power unit for a vehicle has a crankcase made up of tow left and right crankcase members, and a lubricant feed pump disposed in one crankcase member in such a fashion that one side surface of pump rotors of the feed pump lies on the mating surface of the crankcase members. The feed pump is mounted on one end of the shaft of the feed pump while a drive gear for rotating the shaft is disposed on the opposite end of the shaft. A lubricant oil filter to which oil is delivered from the feed pump is disposed on the other crankcase member. Thus, the structure for supplying lubricating oil is simplified, and the power unit is reduced in size in its entirety.

An engine assembly includes an oil pan including an oil pan body defining a cavity. The oil pan body includes a dividing wall separating the cavity into a first compartment and a second compartment. The dividing wall defines a compartment opening extending therethrough, and the compartment opening fluidly interconnects the first compartment and the second compartment. The engine assembly also includes an oil pump at least partially disposed inside the first compartment of the oil pan. The oil pump includes a pump pickup conduit in fluid communication with the first compartment. The engine assembly additionally includes a temperature sensor disposed inside the pump pickup conduit of the oil pump. The temperature sensor can measure the temperature of oil flowing into the oil pump. In other words, the temperature sensor can sense the temperature of the oil pumped in the engine.

A transmission oil filter is assembled from a filter element, a base, and a cover. Each of the three pieces extends beyond the filtration media to form an inlet channel. The inlet channel is low enough to fit under a valve body. Placing the inlet in this channel ensures that the inlet draws transmission fluid at road gradients and acceleration rates at which an inlet under the filtration media would draw air.

In order to improve and in particular to more economically manufacture and/or assemble and/or maintain a sump device comprising a sump body particularly for an oil supply in a commercial motor vehicle having a pipe unit comprising a pipe body wherein the sump body is an injection moulded part of plastics material it is proposed that the pipe unit be arranged on the sump body with play.

A device for reciprocatingly removing and replenishing fluid in circulating system of an hydraulic mechanism that includes at least two processing tanks, at least one air pressure regulator and connector releasably engageable with a pressurized air source, at least one vacuum generator, at least one pressure regulator; and means for removing the fluid from the circulating system at vacuum.

An internal combustion engine includes a bottomed box-shaped oil pan in which oil is stored. In addition, the internal combustion engine includes an oil pump configured to suck the oil in the oil pan and pressure-feed the oil to each part of the internal combustion engine. A suction pipe extends toward a bottom surface of the oil pan from the oil pump. A strainer is attached to a tip end of the suction pipe. A projection portion protrudes from a bottom surface which is one of inner wall surfaces defining an oil storing space inside the oil pan. The resonance frequency of the projection portion falls in the range of frequency of vibration that is generated at an engine rotational speed at which the internal combustion engine continues to operate independently.

A liquid surface height inside a tank is allowed to be confirmed while blow-back of a liquid is reduced. A strainer body having a substantially bottomed tubular shape has a substantially D shape when viewed in a longitudinal direction. A bottom surface of the strainer body has a shape in which a part of a conical shape is cut away, and a top of the substantially conical shape overlaps with a notched portion notched to form the substantially D shape. The bottom surface protrudes toward an opening of the strainer body. A rod is provided adjacent to the notched portion of the strainer body, and a float is provided on a lower end of the rod.

A suction oil filter for a transmission or combustion engine including an oil filter housing made of plastic and having at least one suction channel that can be connected to a suction side of a suction pump and at least one return channel feeding into the suction channel for a pressurized oil flow returned by the suction pump. The return channel is provided with at least one nozzle in the region of the opening thereof into the suction channel, as well as at least one pressurized oil supply pipe which is linked to the return channel and can be connected to a pressure side of the suction pump, and which is connected to the oil filter housing via at least one contour connection.