Abstract: A cooling water structure for an engine with improved external appearance and reduced cost. A first passage section of a cooling water passage discharges cooling water from a water pump to water jackets of front and rear cylinders. The first passage section is formed in a surface of a partition wall of a right case that is an inside wall surface of a crank case. The water pump is accommodated with the first passage section in a crank chamber of the crank case.

Abstract: Cooling circuit for an internal combustion engine including a cylinder block and a cylinder head block, these blocks each including cooling means in the form of integrated portions of circuit, the cooling circuit also including at least a first, a second and a third separate external loops for external recirculation or reinjection mounted in parallel and looped on the said integrated cooling means and a circulating pump connected fluidically to the integrated cooling means and to the three recirculation loops, causing the fluid to circulate in the said integrated cooling means and in the said three recirculation loops; the at least three recirculation loops offer at least one common fluid node and are at least partially overlapping, a single actuator controlling the flow of liquid circulating in the at least three recirculation loops.

Abstract: In an internal combustion engine system where the heat in the engine jacket coolant is discharged in a water cooled heat exchanger, an independent and automatic by-pass safety cooling system responsive solely and directly to engine jacket coolant temperatures to ensure that cooling of the engine will continue without reliance upon any other control system or personnel.

Abstract: A cooling water communication passage extending in a cylinder disposition direction is provided at a cylinder block-integrated crankcase of an engine with parallel multiple cylinders loaded by being tilted forward, and cooling water is supplied to a water jacket from the cooling water communication passage. The cooling water communication passage is adjacently disposed below the water jacket at a rear side of the cylinder bank, a water pump is placed at a crankcase side wall located at a rear side from a crankshaft, and a downstream side cooling water pipe through which the cooling water discharged from the water pump is passed is connected to an intermediate portion of the cooling water communication passage.

Abstract: In a cooling circuit for an internal combustion engine of a motor vehicle including a pump device arranged upstream of the internal combustion engine, a cooler having an inlet side connected to a coolant outlet of the internal combustion engine and an outlet connected via a coolant line to the inlet side of the pump device, a cooler bypass line extending from the outlet side of the internal combustion engine to the inlet side of the pump device while bypassing the cooler and a switching valve arranged in the coolant line between the cooler and the pump device, a switching valve bypass duct is provided bypassing the switching valve and including a valve device which is open when the engine is shut down for reliable ventilation of the second coolant line during filling of the cooling circuit.

Abstract: An improved vehicle cooling system is disclosed having the capability of controlling various thermal components of the system to effectively control the heating and cooling of an engine of the vehicle based on instantaneous vehicle and ambient conditions and also based upon predictive conditions. These predictive conditions can include information about the upcoming terrain of the route along which the vehicle will travel.

Abstract: A water-cooled internal combustion engine configured so as to facilitate the change of the cooling system, thereby reducing costs. The crankcase of the water-cooled internal combustion engine is adapted to journal a crankshaft. The crankcase is covered by a crankcase cover from the axial outside. The crankcase is connected to the crankcase cover through an annular shaped spacer, and at least part of a water pump is formed integrally with the spacer.

Abstract: The invention relates, in general, to internal combustion engine cooling, in particular for a motor vehicle, more specifically to a cooling agent compensation tank of a cooling circuit, in particular a low-temperature circuit for indirectly cooling a super-charging air for an internal combusting engine and to a method for cooling a highly heated structure, in particular an internal combustion engine. The inventive compensation tank is integrated into a main cooling circuit, wherein a means for directly introducing the cooling fluid is arranged on the compensation tank between the input and output connections and the cooling fluid flow coming into the compensation tank runs directly from the input connection to the output connection by means of said directly introducing means.

Abstract: Actuating device for a recirculation pump of a cooling circuit of an internal combustion engine comprising a pulley suitable for being rotationally driven by the engine, a driven shaft for driving the pump and an electromagnetically controlled coupling interposed between the pulley and the driven shaft, in which the electromagnetic coupling comprises an electromagnet, coupling mechanism controlled by the electromagnet and mobile between an engagement position in which the pulley is connected to the driven shaft and a disengagement position, and an elastic member for maintaining an engagement member in the engaged position when the electromagnet is not energized.

Abstract: A method of controlling alternator temperature and engine temperature for a vehicle is provided. The method comprises rotating a first drive shaft to generate electricity during an operation of an engine; rotating a second drive shaft to cause pumping of coolant to cool at least portion of the alternator and the engine where the first and second drive shafts are operatively coupled such that rotation of the first drive shaft imparts rotation to the second drive shaft; and selectively routing coolant through multiple different fluid pathways in response to an engine operation condition.

Abstract: A cooling system for cooling a plurality of heat producing systems includes a heat exchanger having a plurality of cooling zones, each of which has a respective inlet and outlet for facilitating flow of a respective temperature control fluid therethrough. Each of the respective temperature control fluids facilitates temperature control of a respective heat producing system. A plurality of fans cool the temperature control fluids flowing through the heat exchanger, and a fan or fans are disposed proximate each zone of the heat exchanger to provide air flow substantially independently from the air flow over the other cooling zones.

Abstract: A centrifugal fluid pump for circulating fluid through an engine's cooling system includes a body configured to be at least partially received within a bore in the engine, a shaft having an impeller rotatably connected to the body, the impeller being positioned to move fluid through the engine, and a shroud supported on the body and positioned between the duct and the impeller when the body is at least partially received within the bore. The shroud has an opening to permit the movement of fluid to the impeller and may be configured to engage an inner surface of the bore. The shroud remains stationary with respect to the bore as the shaft and the impeller rotate and the shroud and the bore cooperate to inhibit fluid from passing between the inner surface of the bore and the shroud to a position that is upstream of the shroud.

Abstract: A water pump includes an impeller provided at a first end of a rotational shaft supported by a body via a bearing, a mechanical seal provided between the impeller and the bearing, a draining hole introducing a water drop leaked from an impeller side via the mechanical seal to a reservoir provided at a bottom of the body and having a side opening, a plugging member provided at the side opening of the reservoir for liquid-tightly sealing the reservoir, and an opening portion provided at the plugging member for communicating the reservoir and an atmosphere side.

Abstract: An engine for a leisure vehicle including a crankcase having at least two crankcase portions, a plurality of main journal fastener bolts by which the two crankcase portions are coupled to each other such that a crankshaft is rotatably mounted between the two crankcase portions, an oil pump disposed below the plurality of main journal fastener bolts and a vicinity of the main journal fastener bolts, and a water pump disposed laterally of the oil pump in such a manner that a rotational shaft of the water pump is coaxial with a rotational shaft of the oil pump.

Abstract: An improved vehicle cooling system is disclosed having the capability of controlling various thermal components of the system to effectively control the heating and cooling of an engine of the vehicle based on instantaneous vehicle and ambient conditions and also based upon predictive conditions. These predictive conditions can include information about the upcoming terrain of the route along which the vehicle will travel.

Abstract: A water circulation structure of a cylinder block having a compact layout of piping connecting an engine body and a radiator. A water-cooled internal combustion engine is provided with an engine body including a cylinder block and a cylinder head and a radiator. The radiator is disposed to be separated, in a prescribed direction, i.e. in a rightward direction, from the engine body. A cooling water outlet portion is open to a cylinder head water jacket and is provided in the end portion of the cylinder head. The cooling water outlet portion being connected with an inlet pipe for leading the cooling water flowing out of a cylinder block water jacket into the cylinder head water jacket to the radiator. The cooling water outlet portion is disposed to the right closer to the radiator than a chain chamber.

Abstract: A coolant pump arrangement for an internal-combustion engine of a motor vehicle is provided, which includes engine shafts. The coolant pump arrangement encompasses a pump housing and a pump shaft, one end of which is provided with a pump impeller. The pump shaft is essentially cantilevered by way of a bearing that is disposed inside the internal combustion engine.

Abstract: A coolant pump and method thereof for a coolant circuit of the internal combustion engine of a motor vehicle including at least a radiator circuit and a bypass circuit is disclosed. The coolant pump contains a coolant pump housing (14) which is provided with an intake pipe (22), a bypass pipe (24), and a pressure pipe (34). A coolant pump electric motor (26) is arranged in the coolant pump housing (14), the motor housing (28) of which is situated in the coolant flow, drives a pump impeller (32) via a pump shaft (30). A directional control valve (40) is integrated into the coolant pump housing (14). The intake pipe (22) is arranged in the area of the end of the pump motor facing away from the pump impeller (32). Furthermore the bypass pipe is arranged in an area downstream of the intake pipe (22).The pressure pipe (34) is arranged in an area downstream of the bypass pipe (24).

Abstract: The method provides hydraulic pressure for mechanical work from an engine lubricating system in an internal combustion engine by supplying oil to an engine lubrication gallery for lubricating the engine and to at least one variable oil demand accessory. Each of the variable oil demand accessories has an individual pressure regulator. The output of the variable displacement pump is regulated based on the sum of fluid flow required by the engine lubricating system and the engine accessories, regardless of the engine output. The demand for fluid is determined by the individual pressure regulators on each of the engine accessories. In a preferred embodiment, an accumulator stores high-pressure fluid to be used to power the hydraulic accessories.

Abstract: An oil pump system is provided for a motorcycle, and includes at least one oil pump, a water pump, a drive shaft, a support frame, a drive gear, and an oil collector lid. The oil pump is supported by a crankshaft case and is coupled to the drive shaft. The drive shaft has an end section on which the drive gear is mounted. The drive gear is coupled to a crankshaft of an engine by a chain. The oil collector lid is arranged outside the drive gear. The water pump is coupled to the end of the drive shaft. Mechanical power is transmitted from the crankshaft, through the chain, to drive the drive gear and the drive shaft to also drive the water pump. The support frame is provided to rotatably support the drive shaft at a location spaced from the oil pump so as to form an enhanced support to the drive shaft and improve stability of operation and durability of the drive shaft.

Abstract: An internal combustion engine (200) includes a coolant pump (212) having a pump outlet (214), and a first exhaust gas recirculation (EGR) cooler (206) fluidly connected to the pump outlet (214). A crankcase (202) is fluidly connected in parallel with the EGR cooler (206) to the pump outlet (214) for receiving coolant therefrom. A cylinder head (204) is fluidly connected to the crankcase (202) for receiving coolant therefrom. A thermostat (232) is fluidly connected between the cylinder head (204) and the coolant pump (212). A valve system (238) has a first selectable position fluidly connecting the flow from the first EGR cooler (206) to the flow in the cylinder head (204), and a second selectable position fluidly connecting the flow from the first EGR cooler (206) to the thermostat (232) in bypassing relation to the cylinder head (204). Each of the first or second position is effected in response to an engine operating parameter.

Abstract: An engine coolant pump drive system for a vehicle having an engine, an engine coolant system, and at least one sensor for sensing at least one operational condition of the vehicle is disclosed. The pump drive system includes a magnetorheological fluid (MRF) clutch, and a coolant pump. The MRF clutch includes a torque input section coupled to a torque output section via a MRF, the torque input section being configured to receive a torque input from the engine. The coolant pump is configured for operable communication with the torque output section of the MRF clutch. In response to a signal from the at least one sensor, the MRF clutch is configured to provide a continuously variable torque transfer from the torque input section to the torque output section, thereby providing for variable coolant flow in the engine coolant system via the coolant pump capable of a continuously variable speed.

Abstract: An improved vehicle cooling system is disclosed having the capability of controlling various thermal components of the system to effectively control the heating and cooling of an engine of the vehicle based on instantaneous vehicle and ambient conditions and also based upon predictive conditions. These predictive conditions can include information about the upcoming terrain of the route along which the vehicle will travel.

Abstract: The invention relates to a cooling module for an engine (1) of a motor vehicle. Said cooling module comprises a heat exchanger (4), at least one fan (16) and a coolant pump (8), whereby a modular frame (3) forms an integral part of the cooling module (2) and the coolant pump (8) is disposed within and/or on said modular frame.

Abstract: A control arrangement (10) comprises a first selectable controller (12) for controlling an action, and a second selectable controller (14) for controlling the action. The arrangement also includes a selector (22) for selecting one of the controllers (12, 14) to control the action. The arrangement (10) further includes a first heat exchanger (16) associated with the first controller (12) to effect a transfer of heat between the first controller (12) and the first heat exchanger (16). The arrangement also includes a second heat exchanger (18) associated with the second controller (14) to effect a transfer of heat between the second controller (14) and the second heat exchanger (18).

Abstract: A vehicle thermal management system includes a temperature control fluid for controlling the temperature of at least a portion of a vehicle system. A pump is configured to pump the temperature control fluid through a heat exchanger to facilitate the transfer of heat between the temperature control fluid and ambient air. A fan is operable to move the ambient air across the heat exchanger to facilitate increased heat transfer. A control system is used to control operation of the pump and the fan. The control system is provided with operation data that includes optimized operating speeds for the pump and the fan to minimize power consumption, while maximizing heat transfer.

Abstract: This invention relates to a method of cooling an engine for an automobile. The method operates using a predictive, feed-forward element combined with a fuzzy logic feedback controller to achieve accurate control over engine temperature. The fuzzy logic feedback is only utilized in the event that the predictive control results in a cylinder head temperature outside a predetermined range.

Abstract: In a cooling and heating device for an internal combustion engine having a main coolant pump supplying coolant to the engine and a coolant return line with a return flow control unit which directs the coolant return flow to the main coolant pump selectively via a large cooling circuit, in which an air/fluid cooler is arranged, or via a small cooling circuit bypassing the air/fluid cooler, an oil/coolant heat exchanger is provided for heating or cooling a flow of oil, the flow of coolant through the oil/coolant heat exchanger being controlled by means of a coolant flow control unit directing the flow through the oil/coolant heat exchanger only after a predefined coolant temperature has been reached so that, below this temperature, no heat is extracted from the coolant by the oil/coolant heat exchanger and rapid heating of the internal combustion engine is ensured.

Abstract: An internal combustion engine in a power unit includes an oil pump that rotates by a transmission mechanism with an endless chain, and a crankcase with an opening formed by protruding walls of side walls of the crankcase in an axial direction. A drive sprocket is fitted to a main shaft of a gear transmission and a driven sprocket is fitted to a shaft end of a drive shaft of an oil pump. When viewed sideways, the protruding walls and mating faces have overlapping parts that partially overlap the driven sprocket. On the other hand, all the shaft end and the remainder of the driven sprocket are exposed inside the opening when the cover is removed. The resulting configuration improves the working efficiency in fitting an oil pump into the crankcase without reducing the rigidity of the crankcase.

Abstract: An integrated cooling system includes a housing and a pumping device disposed within the housing, configured to pressurize a fluid. The cooling system also includes a motor disposed within the housing and operatively coupled to the pumping device. The cooling system further includes a first cooling circuit configured to receive the pressurized fluid and circulate the pressurized fluid through at least one component external to the housing. The cooling system also includes a second cooling circuit in fluid communication with the first cooling circuit, and configured to direct at least a portion of the pressurized fluid through the motor.

Abstract: A snow vehicle includes an engine, a track belt arranged on a rear side of the engine, and a cooling water path for cooling the engine, in which the engine includes a cooling water inlet portion and a cooling water outlet portion provided on a front surface side of the engine and connected with the cooling water path. The snow vehicle is capable of improving the turning ability of the vehicle, while simplifying a cooling water path and reducing the size of the structure for cooling the engine.

Abstract: A head cooling path diverges from a backflow path at a position between a radiator and a thermostat and is connected with a cylinder head of an engine by bypassing a cylinder block of the engine. A pump circulates the cooling water through the head cooling path, to the cylinder head, when the engine is operated at a high load and/or a vehicle is in a rapid acceleration, so that sufficiently cooled cooling water is supplied directly to the cylinder head.

Abstract: In an internal combustion engine for a motor vehicle, having a cylinder head and an engine block, each with a coolant inlet port and a coolant outlet port which is common to the cylinder head the engine block, a main coolant pump having an intake side connected to the coolant outlet port and a pressure side connected to a first control valve via which coolant reaches the inlet port of the cylinder head and the inlet port of the engine block depending on the temperature of the coolant, and to a method for operating such an internal combustion engine, wherein the main coolant pump is selectively actuated to pump the coolant through at least one of the cylinder head and the engine block or is shut down depending on the engine operating state.

Abstract: A vehicular power unit including a drive-side transmission sprocket wheel provided on an end of an output shaft that protrudes from one side of a crankcase, an endless transmission belt for transmitting power to a driving wheel wound the sprocket wheel. The endless transmission belt transmits power from the crankshaft to a transmission housed in the crankcase. A water pump is arranged on the same side of the crankcase in a position between the crankshaft and the output shaft. Further, the water pump is disposed inside the drive-side transmission sprocket wheel in a direction along the axis of an output shaft. This configuration enables the vehicular power unit to be formed in a compact size in a direction along an axis of a crankshaft.

Abstract: An engine cooling structure for a water cooled engine includes water pump and a thermostat. The water pump pumps coolant to a water jacket of the engine. The water pump and thermostat are provided on a cover member installed on an outside of a crankcase of the engine, and a coolant passage, which communicates with the water jacket through the water pump from the thermostat, is integrally formed in the cover member, so as to obtain arrangement of the cooling structure that is efficient in terms of space. The engine cooling structure increases the degree of freedom of layout around a cylinder head by keeping the projection amount on a side of the cylinder head small, simplifies the piping construction, and reduces the number of assembly steps.

Abstract: In a cooling system of an internal combustion engine, coolant flowing through a radiator and bypassing the radiator are mixed in a flow control valve controlled by ECU on the basis of signals provided by sensors such as a coolant temperature sensor, so that the coolant is circulated by an electric pump to control the coolant temperature for the internal combustion engine. A desired coolant temperature is changed according to the operating condition of the internal combustion engine, the traveling condition of a vehicle and the ambient condition. Thus, the temperature of the coolant flowing into the internal combustion engine is changed properly so that frictional resistance in the engine and exhaust gas may be reduced and the internal combustion engine may be kept at its most efficient temperature near a detonation limit temperature.

Abstract: This invention relates to a cooling structure for cooling a cylinder liner by circulating coolant in a water jacket formed along an outer periphery of the cylinder liner. This cooling structure includes an annular first water reservoir for temporarily storing coolant. This first water reservoir allows the coolant to uniformly flow circumferentially of the cylinder liner. The cooling structure also includes a plurality of coolant passages provided radially for connecting the first water reservoir to the water jacket. The coolant is caused to strike a part of a wall defining the water jacket substantially vertically from the radial coolant passages, thereby to generate turbulent flow in the coolant to efficiently cool the cylinder liner.

Abstract: A water pump assembly for controlling the flow of temperature control fluid in an internal combustion engine. The water pump assembly includes a housing with an inlet, an outlet and an electric motor assembly for causing fluid to flow from the inlet to the outlet. A housing includes a mounting flange for mounting the water pump to an engine. The mounting of the water pump permitting direct flow into or out of the engine from the water pump.

Abstract: An internal combustion engine and a transmission are supported by a saddle-ride type vehicle body having a front wheel in a front portion thereof. An oil cooler is installed without interference with other parts such as, for example, an exhaust pipe and the front wheel. Further, the distance between a water pump and the oil cooler is made shorter to shorten the length of a cooling water pipe. The power unit includes a crank shaft, an output shaft disposed in a rear portion of the power unit to output torque produced by the crank shaft to the exterior through a transmission, a water pump is adapted to be rotated with the torque transferred thereto from the crank shaft, and an oil cooler mounted on a rear surface of the power unit in a vehicle advancing direction below the output shaft and at a position lower than the crank shaft.

Abstract: An engine cooling system for cooling an engine installed in an off-road vehicle includes a coolant circulating system including a thermostat held in a thermostat case, and connecting water jackets formed in the engine and a radiator. The coolant circulating system has a metal connecting pipe held by a first bracket attached to an upper end part of a first cylinder unit of the engine. The thermostat case is an individual member separate from component members of the cylinder unit, and the thermostat case is held by the first bracket. The first bracket is formed integrally with the metal connecting pipe. When the engine is a V engine having a front cylinder unit and a rear cylinder unit, the metal connecting pipe is extended between the front and the rear cylinder unit, and is held by brackets on the front and the rear cylinder unit.

Abstract: A pump/valve assembly forming part of a circuit for circulating a liquid fluid has a pump and a proportional-control valve unit (2) in series with the pump. The valve unit (2) has a valve (3), an electrical actuator (4) and a position sensor (5) which are fixed to a movable member (3?) sealing the valve (3) for displacement therewith, and control means (6) controlling the actuator (4) according to the position of the movable member (3?) indicated by the sensor (5) and a reference signal. The valve unit (2) is subjected to a procedure indexing the position of the movable member (3?) and setting parameters for the control means (6) at the beginning of each new operating cycle of the assembly, and the pump (1) is rotated at a constant speed selected from a limited number of predetermined speeds at least during part of each operating cycle.

Abstract: A wet rotor-type pump, in particular used for pumping a coolant in vehicle motors, comprises a pump impeller for feeding a fluid and a motor rotor connected with the pump impeller. In wet rotor-type pumps the motor rotor is cooled by the fluid to be pumped.

Abstract: Early stage detection of engine liquid cooling problems is provided with temperature, pressure and other sensors and associated logic circuits configured for detecting alarm conditions including below normal static coolant pressure coupled with an elevated coolant temperature, above normal static coolant pressure, below normal coolant pump pressure condition, coolant voids due to coolant loss or boiling, and external steam or liquid leakage from the cooling system. A gauge displays the difference between coolant pump output pressure and static coolant pressure.

Abstract: A locomotive engine having an engine cooling system, a compressor for compressing engine intake air, and an aftercooler for cooling the compressed intake air prior to introduction into an intake manifold of the engine. The locomotive also has a dynamic brake system that includes a dynamic brake grid and one or more cooling fans. The engine cooling system includes an engine cooling circuit having coolant passages internally disposed in the engine, and a radiator and radiator fans configured to receive coolant exiting the engine and return cooled coolant to the engine. An enhanced aftercooler cooling circuit is disposed in fluid communication with the engine cooling circuit and includes a heat exchanger arranged to receive coolant exiting the engine coolant passages, cool the coolant passing therethrough, and return cooled coolant to the aftercooler.

Abstract: A multi-cylinder engine comprises a cylinder block (1) provided with a side water passage (3) oriented in a front and rear direction and passing by each of cylinder walls 12 so as to introduce cooling water from a radiator into a cylinder jacket 4 laterally through the side water passage (3). The side water passage (3) has front and rear end portions provided with front and rear openings (3a), (3b) which communicate the side water passage (3) with a water pump (10). Thus even if the water pump (10) is arranged at either of the front and rear end portions, the opening of the side water passage 3 near the end portion where the water pump (10) is arranged can communicate the side water passage (3) with the water pump (10). And a method for alternatively producing multi-cylinder engines, uses the cylinder block (1) as a common part.

Abstract: In a coolant pump arrangement in a cooling circuit of an internal combustion engine, including a first coolant pump having a drive mounted on a pump shaft at one side of the first coolant pump, a second coolant pump is connected to the pump shaft at the other side of the first coolant pump via a transmission arrangement including a clutch and a speed change drive for controlling operation of the second coolant pump relative to the first coolant pump.

Abstract: A water pump of an engine includes a pump housing adapted to be fixed to the engine; a pump body joined to the pump housing to define a fluid chamber of the water pump between the pump body and the pump housing; and a rotational pump shaft member extending through the pump body into the fluid chamber. A fastener set for fastening the pump housing and the pump body together includes a housing-side fastener or bolt extending in a direction along the rotational pump shaft member from the pump housing's side to the pump body's side.

Abstract: An engine cooling water passage structure includes a cooling water passage unit that is formed by integrating a water pump for supplying cooling water, a thermostat housing for housing a thermostat, a gas/liquid separation chamber for separating air from the cooling water, cooling water supply passages for supplying to water jackets, via the thermostat housing and the water pump, the cooling water that has been returned from a radiator, cooling water discharge passage for discharging into the radiator the cooling water that has passed through the water jackets, and a bypass passage for returning to the thermostat housing the cooling water that has passed through the water jackets, while bypassing the radiator. This cooling water passage unit is detachably mounted as a unit on an engine main body. Thus, the arrangement allows the engine cooling system to be made compact.

Abstract: A method and an apparatus for regulating the operating temperature of an internal combustion engine, wherein a cooling fluid is transported in a circuit through the internal combustion engine by means of a cooling fluid pump driven by an electric motor. The electric motor can be operated with a power dissipation loss which is increased in comparison with its nominal operation and the waste heat produced in that situation is transmitted to the cooling fluid.

Abstract: An engine cooling system includes a centrifugal coolant pump and a cavitation suppressor in the system upstream of the pump inlet. The suppressor increases pressure in the pump inlet by a converging nozzle that accelerates a jet of coolant at the location of the static head and converting kinetic energy of the jet to increased pressure in a diffuser. In an exemplary embodiment, the suppressor is formed of simple components made from available materials and preferably welded into an assembly. A machined nozzle with a diffuser and head pipe made from available steel pipe comprise the main components of the exemplary cavitation suppressor.