794results about "Casings" patented technology

The invention belongs to the technical field of material processing, and discloses a magnesium alloy casting semi-solid injection molding method and application, and the method comprises the following steps: checking and adjusting a semi-solid injection machine, a casting mold and other equipment to be in a normal state, and placing magnesium alloy particles in a designated area of a hopper; putting a long nozzle of the semi-solid injection platform into the center of a mold sprue; setting the temperature of each section of a mold temperature controller, a charging barrel and a nozzle; preserving heat for a period of time after the temperature of the charging barrel reaches a set value, so that the temperature of materials in the charging barrel is uniform; setting the injection rate, the cooling time, the material return distance and the melt pressure of the semi-solid injection machine; and after a release agent is quantitatively sprayed to the mold, a semi-solid injection program is started, and a casting is obtained. The AS41B magnesium alloy particles with good heat resistance are adopted as the raw material, the semi-solid injection molding method is combined, a melting furnace is not needed, only heating to the semi-solid state is needed, the melt temperature is low, energy is saved, the service life of a mold is prolonged, protective gas is not needed, and the manufactured casting is good in mechanical property and high in heat resistance.

The utility model discloses a motorcycle engine crankshaft box body with an oil separation chamber, which comprises a crankshaft box body formed by connecting a left crankshaft box body and a right crankshaft box body, crankshaft mounting holes and balance shaft mounting holes are arranged on the left crankshaft box body and the right crankshaft box body, and the crankshaft mounting holes and the balance shaft mounting holes are distributed in a pairwise corresponding mode. An oil collecting chamber is arranged at the lower end in the crankcase body, and the balance shaft mounting hole is arranged close to the maximum oil liquid level position of the oil collecting chamber; the bottom of the oil collection chamber is provided with an oil separation chamber which is arranged close to the balance shaft mounting hole, the upper end of the oil separation chamber is close to the maximum oil liquid height of the oil collection chamber, and one side, far away from the balance shaft mounting hole, of the oil separation chamber is provided with an oil inlet hole; an engine oil filter screen is arranged in the oil separation cavity, and an oil guide channel with one end communicated with the oil separation cavity and the other end communicated with an oil inlet of the engine oil pump is arranged on the side of the oil separation cavity.

An engine and a vehicle comprising same. The engine comprises a main cylinder body (10), end covers (30), a timing cover (50), and an oil pan (60), wherein a left cylinder body (101) and a right cylinder body (102) of the main cylinder body are arranged in the left-right direction; the left cylinder body and the right cylinder body define a crankshaft cavity (20); the left cylinder body and the right cylinder body are each provided with a combustion chamber (11) extending in the horizontal direction; the end covers comprise a left cylinder cover (301) provided on the left side of the left cylinder body and a right cylinder cover (302) provided on the right side of the right cylinder body; the timing cover is located on one side of the main cylinder body and is fixed to at least one of the left cylinder body, the right cylinder body, the left cylinder cover and the right cylinder cover; the oil pan is arranged on the lower portion of the main cylinder body and is communicated with the crankshaft cavity.

The invention discloses a cam shaft box, an engine and a vehicle, the cam shaft box comprises an ignition coil mounting hole, the ignition coil mounting hole is used for mounting an ignition coil, the ignition coil mounting hole comprises a sealing section, and the ignition coil is matched with the inner wall of the sealing section; and the exhaust hole is formed in the side wall of the ignition coil mounting hole and located in the lower side of the sealing section, and the ignition coil mounting hole is communicated with the outside through the exhaust hole. The exhaust hole is formed in the lower side of the sealing section, exhaust does not need to pass through the sealing section, and exhaust is smoother.

The embodiment of the invention provides a cylinder cover assembly, a horizontally-opposed engine, a hybrid power assembly and a vehicle, the cylinder cover assembly comprises a body, an air flow channel and a cooling liquid channel are arranged in the body, and the body comprises a lower side and an upper side which are arranged in a deviating mode in the vertical direction; the airflow channel comprises an air inlet and an air outlet, the air inlet is formed in the lower side, and the air outlet is formed in the upper side; the cooling liquid channel surrounds at least part of the airflow channel and comprises a water inlet and a water outlet, the water inlet is formed in the lower side, and the water outlet is formed in the upper side. The air inlet of the airflow channel and the water inlet of the cooling liquid channel are formed in the lower side, and the exhaust port of the airflow channel and the water outlet of the cooling liquid channel are formed in the upper side, so that the influence of bubbles on cooling liquid flowing can be reduced, accumulation of the bubbles can be avoided, and the cooling effect of the cylinder cover assembly can be improved.

A preparation method of porous hafnium carbide superhigh-temperature ceramic is characterized by comprising the following steps: dispersing graphene oxide in a solvent to form a graphene oxide dispersion liquid, mixing a monomer hafnium source solution with the graphene oxide dispersion liquid, and carrying out hydrothermal treatment on a hafnium oxide carbon precursor network structure to obtain the porous hafnium carbide superhigh-temperature ceramic. The organic-inorganic hybrid precursor is subjected to two-stage heat treatment, the first stage is inorganic treatment, the second stage is carbon thermal reduction reaction, and the porous hafnium carbide ultrahigh-temperature ceramic material is obtained. Graphene oxide is used as a structure-directing agent and an in-situ carbon source, a monomer hafnium source is uniformly anchored on the surface of a GO sheet layer on the molecular scale, an organic-inorganic hybrid precursor is formed, after the precursor is subjected to hydrothermal crosslinking, Hf species and a carbon skeleton are highly mixed on the nanoscale, and the Hf / GO composite material is obtained. And the subsequent carbon thermal reduction reaction can be efficiently completed in a low-temperature interval of 1300-1450 DEG C.

The invention discloses an air-cooled diesel generator set, and particularly relates to the technical field of generators, the air-cooled diesel generator set comprises a base, the upper end of the base is slidably connected with diesel power generation equipment through a sliding rail, the front end of an output rotor of the diesel power generation equipment is fixedly connected with a fan located in an inner cavity of a dustproof dehumidification structure, and an air duct structure is arranged on the inner surface of a shielding box. And a dustproof dehumidification structure is arranged at the front part of the inner surface of the shielding box. According to the air-cooled diesel generating set, the dehumidification assembly is arranged and used for removing moisture in sucked air, and corrosion of the moisture to internal parts is reduced; furthermore, dust and particles in the air are separated and sucked through the effect of the dustproof assembly, entering of large-particle dust is reduced, dust on the cooling fins can be periodically cleaned through automatic cleaning in the dustproof assembly, and the air inlet amount is guaranteed; meanwhile, the air flowing efficiency is improved through the effect of the air duct structure, the heat dissipation area is increased, the heat dissipation effect is enhanced, and performance reduction and potential safety hazards caused by overheating are avoided.

The application discloses a kind of air-cooled diesel generating set, specifically relates to the technical field of generator, including base, the diesel generating equipment is slidably connected with the upper end of base by slide rail, the fan in the dustproof dehumidification structure inner cavity is fixedly connected with the output rotor front end of diesel generating equipment, the inner surface of shielding box is provided with air duct structure, and the dustproof dehumidification structure is provided in the front of the inner surface of shielding box.The air-cooled diesel generating set of the application is removed by setting dehumidification component for removing moisture in inhaled air, reduce the corrosion of moisture to internal parts;Further, dust and particles in inhaled air are separated by the action of dust removal component, the entry of large-particle dust is reduced, dust on the cooling fin can also be periodically cleaned by automatic cleaning in dust removal component, to ensure the air intake;Air flow efficiency is improved by the action of air duct structure, the heat dissipation area is increased, the heat dissipation effect is enhanced, and the performance decline and safety hazards caused by overheating are avoided.

A vehicle shown herein is a side by side utility vehicle having a powertrain an engine with at least three cylinders, an intake and an exhaust, where the intake is forward of the engine and the exhaust is rearward of the engine. The vehicle may further or alternatively include an engine block configured to couple with various transmissions without alteration of the engine block itself.

The present invention discloses an all-terrain vehicle and its engine. The engine includes: a cylinder provided with an exhaust port and a first cooling channel; a crankcase disposed below the cylinder, the top of the crankcase being spaced a predetermined distance from the exhaust port, the crankcase including a second cooling channel communicating with the first cooling channel; a water pump disposed on one side of the crankcase; a cylinder inlet pipe, one end of the cylinder inlet pipe being connected to the water pump, the cylinder inlet pipe being fixedly attached to the top of the crankcase and spaced apart from the cylinder, and the other end of the cylinder inlet pipe communicating with the second cooling channel. Thus, the cylinder inlet pipe and the exhaust pipe can be effectively spaced apart further, so that the high-temperature exhaust pipe can be prevented from affecting the low-temperature cylinder inlet pipe, the cooling water temperature of the cylinder inlet pipe can be effectively reduced, the working reliability of the engine can be ensured, and the fuel efficiency of the engine can be improved.

The invention relates to the technical field of oil cylinder detection, and discloses a movable engine unit protection mute shell and an engine unit, the movable engine unit protection mute shell comprises a cabinet body, a door body is arranged on the front side of the cabinet body, a mute plate is embedded in the inner wall of the cabinet body, an electric sliding rail is arranged in the cabinet body, and a sliding plate is slidably connected to the upper side of the electric sliding rail; a diesel engine unit is fixedly installed on the upper surface of the sliding plate, a cooling mechanism is arranged in the cabinet body, a heat exchange pipe is filled with cooling liquid, when the diesel engine unit works, generated heat enables the cabinet body to be filled with high-temperature gas, and at the moment, the cooling liquid in the heat exchange pipe and the high-temperature gas in the cabinet body generate a heat exchange effect; the temperature in the cabinet body is reduced, heat in the cabinet body is eliminated, and the technical problems that an existing generator set can generate some heat in the working process, and if the heat in the closed cabinet body cannot be eliminated, the heat can damage the cabinet body and generator set equipment are solved.

The utility model provides an engine for a vehicle, a hybrid power assembly and the vehicle, the engine comprises a timing cover and an engine body, the timing cover is connected to one side of the engine body, and the timing cover is provided with a first mounting position; the oil can is arranged on the side, away from the machine body, of the timing cover, and a first connecting structure is arranged on the oil can; and the first locking piece is locked and matched to the first connecting structure and the first mounting position and is connected to the machine body, so that the oil can is supported through the machine body, and stable mounting of the oil can is guaranteed.

The invention discloses an engine, a hybrid power assembly and a vehicle, the engine comprises a component to be subjected to oil return and an oil return pump assembly, the component to be subjected to oil return is provided with a plurality of oil return areas, and at least part of the oil return areas are located at the two opposite ends of the component to be subjected to oil return; the oil return pump assembly is provided with an oil return opening, and the oil return opening is connected with the oil return areas at the two opposite ends. Therefore, at least part of the oil return areas are arranged at the two opposite ends of the component to be subjected to oil return respectively, so that the oil return pump assembly can return oil to the component to be subjected to oil return from different positions, the oil return efficiency can be improved, oil return dead angles are eliminated, the oil return pump assembly is not prone to air suction, and then the operation stability of an engine is guaranteed.

The invention relates to a motorcycle engine crankcase which comprises a crankcase body, a front air cylinder, a rear air cylinder, a liquid inlet cavity, a liquid outlet cavity, an air cylinder water path, a first labyrinth, a second labyrinth and the like. The liquid inlet cavity and the liquid outlet cavity are integrally formed with the crankcase and integrated in the crankcase, so that the whole structure is compact, related pipeline installation is omitted, and the production cost is reduced. The front air cylinder and the rear air cylinder are arranged in a V shape to form an upward V-shaped opening, and the first labyrinth is arranged in the V-shaped opening to fill space, reduce rainwater accumulation and reduce corrosion to a crankcase. The thermostat cavity is arranged between the front cylinder and the rear cylinder, and a water outlet pipe is arranged at the top and communicated with the water tank to participate in engine major cycle. By arranging the first labyrinth and the second labyrinth, oil and gas are separated for the first time and the second time respectively, the oil-gas separation efficiency is improved, and the problems of insufficient mechanical lubrication and faults caused by reduction of engine oil are solved. The engine is compact in structure and reasonable in design, and the performance and reliability of the engine are effectively improved.

The invention discloses an oil pan, an engine, a hybrid assembly and a vehicle, relates to the technical field of engines, and is used for solving the problem that in the prior art, a communication mode of a multi-cylinder engine and a cooling liquid pipeline is not beneficial to compactness and miniaturization of the engine. The oil pan is provided with a cooling liquid channel, a liquid outlet communicated with the cooling liquid channel is formed in the oil pan, and the liquid outlet is used for being communicated with a machine body.

The invention discloses an engine, a hybrid power assembly and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of non-uniform cooling of the engine. The engine comprises a first cylinder body, a second cylinder body, a first cylinder cover and a second cylinder cover. The first cylinder body and the second cylinder body are connected with each other and define a crankshaft cavity. The first cylinder cover is arranged on the side, away from the second cylinder body, of the first cylinder body, and the second cylinder body is arranged on the side, away from the first cylinder body, of the second cylinder body. The first cylinder body is provided with a first cylinder body cooling flow path, the first cylinder cover is provided with a first cylinder cover cooling flow path, the first cylinder body is provided with a first liquid inlet, the first cylinder body flow path comprises a first transition cavity and a first flow channel arranged in a cylinder hole of the first cylinder body, the first liquid inlet is communicated with the first transition cavity, and the first transition cavity is communicated with the first flow channel. The first cylinder cover is provided with a first cylinder cover cooling flow path, the first cylinder cover flow path is provided with a first liquid inlet, and the first liquid inlet communicates with the first transition cavity.

The invention relates to a camshaft bearing cover, an engine, a vehicle and a manufacturing method of the camshaft bearing cover, and belongs to the technical field of automobiles. The cam shaft bearing cover comprises a cam shaft bearing lower cover and a cam shaft bearing upper cover, the cam shaft bearing lower cover is installed on a cylinder cover of an engine cylinder, the cam shaft bearing upper cover is installed on the cam shaft bearing lower cover, and two lower installation half grooves are formed in the first surface of the cam shaft bearing lower cover. The second surface of the camshaft bearing upper cover is provided with two upper mounting half grooves, the two lower mounting half grooves are respectively matched with one upper mounting half groove to form two bearing mounting holes, a bearing cover main oil passage is arranged between the first surface and the second surface, the bearing cover main oil passage is communicated with the bearing mounting holes, and the camshaft bearing lower cover is provided with a bearing cover oil inlet passage. And the bearing cover oil inlet channel is communicated with the bearing cover main oil channel and an oil outlet of the cylinder cover main oil channel of the cylinder cover. The manufacturing process of the camshaft bearing cover can be simplified.

The invention belongs to the technical field of piston engines, and particularly relates to a variable-volume crankcase which is integrated with a deformable and automatically-recoverable device, a variable-volume cavity is formed in the crankcase through a deformable or slidable diaphragm, and particularly, an elastic reset element is arranged in the upper surface of the device, so that the variable-volume cavity is formed in the crankcase. It is ensured that the diaphragm can stably and regularly move and reset after deforming or sliding; power for deformation or sliding of the diaphragm comes from periodical extrusion of an engine crank to the diaphragm, by correctly matching a volume change curve of the crankcase with an air distribution phase, the volume of the crankcase is enlarged during air inlet, so that negative pressure in the crankcase is increased, the volume of the crankcase is reduced during scavenging, pressure in the crankcase is increased, and the service life of the crankcase is prolonged. The technical problems of insufficient air intake, low scavenging efficiency, power attenuation and the like of a two-stroke piston engine under the low air pressure condition are solved, and a feasible solution is provided for power improvement of a small aero-engine and power recovery in a high-altitude environment.

The utility model discloses an engine cover convenient to pre-fix, which comprises a cover plate, a stabilizing assembly is arranged on the cover plate, the stabilizing assembly comprises a reinforcing plate, a connecting block, a fixing bolt, a filling hole, a circulating hole and a stabilizing hole, the reinforcing plate is detachably arranged on the inner side of the cover plate, the connecting block is arranged on the reinforcing plate, and the fixing bolt is arranged on the connecting block. The fixing bolt is detachably installed between the connecting block and the cover plate, the filling hole is formed in the top of the cover plate, the circulating holes are evenly formed in the middle of the top of the cover plate, the stabilizing hole is formed in the side end of the cover plate, a disassembling assembly is arranged on the cover plate, and the disassembling assembly comprises an installing rod, an installing sleeve and a rotating sleeve. The mounting rod penetrates through the cover plate, the mounting sleeve is connected to the mounting rod in a sliding mode, and the bottom of the mounting sleeve is tightly attached to the top of the cover plate, so that the technical problem that in the background technology, an existing engine cover is obviously unstable in the fixing process is solved.

The engine comprises an outer shell, the outer shell comprises a crankcase, a speed change mechanism is installed in the crankcase, the speed change mechanism comprises a power input shaft and a power output shaft, and the power input shaft and the power output shaft are installed in the crankcase and can rotate relative to the crankcase in the circumferential direction of the power input shaft and the power output shaft; the crankcase comprises an upper crankcase body and a lower crankcase body, the power input shaft and the power output shaft are located between the upper crankcase body and the lower crankcase body, the upper crankcase body is connected with the lower crankcase body through a crankcase closing bolt, and the upper crankcase body comprises a bolt mounting hole allowing the crankcase closing bolt to penetrate through, a first shaft seat used for mounting the power input shaft and a second shaft seat used for mounting the power output shaft. At least part of the bolt mounting hole is located between the first shaft seat and the second shaft seat, the upper box body is provided with an oil channel extending from the first shaft seat to the second shaft seat, and the oil channel does not coincide with the bolt mounting hole. Through the arrangement, the sealing performance in the crankcase is improved, and lubricating oil is prevented from leaking from the crankcase.

An engine is disclosed of the V-configuration having an integrated engine and transmission. The engine has a crankshaft which directly couples to drive the water pump, oil pump and transmission clutch. The water pump has a drive shaft coupled to the crankshaft that extends across the crankcase from a first to a second side. The water pump includes a housing where at least a portion is defined in the face of the crankshaft.

The utility model relates to the technical field of automobile accessories, in particular to an automobile valve chamber cover which comprises a cover body, an oil-gas separation cover and a protective buckle cover, an installation area is arranged on the cover body, and a backflow hole and an oil-gas outlet are formed in the installation area. The oil-gas separation cover is buckled on the mounting area and forms an oil-gas cavity and a waste gas transition cavity which are mutually independent, the oil-gas separation cover is provided with a waste gas discharge port and at least one oil-gas inlet, and the oil-gas inlet and the oil-gas outlet are both communicated with the oil-gas cavity; the protection buckle cover is buckled on the oil-gas separation cover, the backflow hole and the waste gas discharging opening are both communicated with the waste gas transition cavity, and a waste gas valve is arranged in the waste gas discharging opening. The automobile valve chamber cover adopts a split design and is convenient to manufacture and low in replacement cost.

The utility model discloses a diesel engine body which comprises an engine body, the front end of the engine body is provided with front end gear train fixing positions, the front end gear train fixing positions are distributed towards the two sides of the width of the engine body, the position of an oil pump gear train on one side is checked and determined from the center of a crankshaft, and the position of a function configuration gear train on the other side is checked and determined from the center of the crankshaft; a rear end bearing shell installation position is arranged at the rear end of the machine body, bolt fastening positions at the rear end are arranged according to the machine head shape of the shell, meanwhile, hollowed-out weight reduction design is conducted, and a water cavity with the volume expanded is formed around a cylinder hole of the machine body. The problems that after the power of an existing diesel engine body is increased, the engine oil cooling effect is poor, the heat balance effect is poor, and the high-temperature condition easily occurs due to the small water cavity volume are solved.

The present invention addresses the problem of providing, in a state ensuring high strength, a cover responsible for the protection and noise insulation of a crank pulley, auxiliary drive belt, etc., in a longitudinal engine in which a crankshaft is disposed facing toward the front of the vehicle body. This cover 30 includes a sound absorbing body 33 made of a material such as hard urethane, and a hard reinforcing body 34 in which the sound absorbing body is insert-molded, the cover being formed in a tray shape as a whole. Fastening parts 35-38 fixed to the engine by bolts are provided to outer ends of the reinforcing body 34. Since the pressing force from the bolts does not directly affect the sound absorbing body 33, high fastening strength can be achieved while ensuring a high protection function and sound insulation function.

The utility model discloses an auxiliary supporting mechanism for a crankshaft, which comprises the following components: a crankshaft which comprises a main bearing journal and a crankshaft end head, and one end of the crankshaft end head is connected with the main bearing journal; the air cylinder body is provided with a first main bearing seat, and the first main bearing seat is used for supporting the main bearing journal; the rolling bearing is located on the outer side of the crankshaft end, and the inner diameter of the rolling bearing is matched with the outer diameter of the crankshaft end; the gear chamber cover comprises a second main bearing seat, the second main bearing seat is used for supporting the crankshaft end, a first installation groove is formed in the end, close to the air cylinder body, of the second main bearing seat, and the first installation groove is used for installing the rolling bearing. An auxiliary supporting structure formed by the rolling bearing and the gear chamber cover is used for assisting the air cylinder chamber in supporting the end of the crankshaft. The problems that due to the fact that a cantilever of the end of the crankshaft is long and supporting is insufficient, vibration of an engine shock absorber end is large, and the end of the crankshaft is broken are solved.

The utility model discloses a box body and motorcycle engine, the box body comprises a casing and a delivery pipe arranged in the casing, the delivery pipe is arranged from wide to narrow, the wider end of the delivery pipe is fixedly provided with an air inlet hopper, the other end of the delivery pipe is communicated with the inside of the casing, a silencer is fixedly installed at the end, away from the air inlet hopper, of the conveying pipe and used for silencing of the air whistle, and internal threads are arranged on the inner side of the air inlet hopper. Flowing air making contact with a vehicle body in the moving process can be sucked in through the conveying pipe, so that the air is conveyed into the shell, parts in the shell are cooled, meanwhile, the inner diameter of the conveying pipe is gradually narrowed, the flowing speed of the air can be increased, the air inlet hopper is arranged at one end of the conveying pipe, and the air inlet hopper is arranged at the other end of the conveying pipe. In addition, by means of the silencer, the air whistle generated at the outlet can be eliminated to the maximum degree, and therefore the mute effect is achieved.

The utility model relates to a two-stage gear transmission valve mechanism which comprises a box body, a cam shaft and a tappet, the cam shaft and the tappet are arranged in the box body, the cam shaft is provided with an oil channel for lubricating liquid to flow, the tappet is arranged on the cam shaft, a containing groove for containing engine oil is arranged in the tappet, and the box body is provided with an overflow groove corresponding to the cam shaft. The overflow groove is used for containing redundant engine oil overflowing out of the box body. The cam shaft and the tappet are forcibly lubricated through the oil duct arranged on the cam shaft, redundant engine oil overflowing into the overflow groove can directly lubricate the outer circle of the tappet and the end face, making contact with the cam shaft, of the tappet, abrasion of the cam shaft and the tappet is reduced, and the service life is prolonged.

A mounting structure of a drive machine (41) in which a cylinder head (43), on which an oil control valve unit (61) designed to control an oil pressure in a variable valve timing device (110) of the drive machine (41) is installed, is mounted on a crankcase (42), wherein an outer wall of the cylinder head (43) is formed with an opening (83) into which the oil control valve unit (61) is partially inserted, and wherein a mating surface (88) of the cylinder head (43) and the crankcase (42) is fastened by at least a pair of bolts (87) spaced apart from each other via the opening (83).

Blow-by gas venting device, comprising: a blow-by gas line (23) extending from a height position of an upper end part of an internal combustion engine (1) to a height position of a lower end part of the internal combustion engine (1), wherein the blow-by gas line (23) is exposed to and subjected to outside air, wherein the blow-by gas line (23) is divided into an upstream gas line (25) and a downstream gas line (26) at a position in the middle thereof; a heating chamber (24) connected between the upstream gas line (25) and the downstream gas line (26) and provided in a flywheel housing (10) of the internal combustion engine (1), the heating chamber (24) being configured to heat blow-by gas; and an oil separator (22) which is provided and configured at the height position of the upper end part of the internal combustion engine (1) to separate oil from the blow-by gas, wherein the upstream gas line (25) has an inlet part (27) connected to the oil separator (22) and an outlet part (29) connected to the heating chamber (24), and the downstream gas line (26) has a further inlet part (31) connected to the heating chamber (24) and a further outlet part (33) released to an atmosphere.

An internal combustion engine (10) includes a one-piece cylinder block casting (12), a flywheel (24) supported for rotation at a front block end (20), and a back gear train (30) supported for rotation at a back block end (22). Cast-in pump inlet and outlet passages (58,60) are formed in the cylinder block casting (12) and open in a pump mounting face (50) at the back block end (22). An oil pump (52) is clamped to the pump mounting face (50) and includes a pump inlet (54) and a pump outlet (56) fluidly connected, respectively, to the cast-in pump inlet passage (58) and the cast-in pump outlet passage (60).