Abstract: A cylinder block for the two-cycle combustion engine includes a scavenging port open at an inner peripheral surface of the cylinder block so as to orient diagonally upwardly relative to a longitudinal axis of a cylinder bore and defined in the cylinder block in communication with a combustion chamber. This scavenging port is formed by cutting with the rotary cutting tool, then rotated about its own longitudinal axis, from an inner peripheral surface of the cylinder block.

Abstract: A piston for a hydraulic brake configured as a bowl, open on one side, with a longitudinal axis, a wall and a bottom, and is delimited on an open end face by a rim with an axial abutment surface which is movable into abutment on a brake pad. The bottom has an essentially plane outside surface, a wall thickness of the bottom is thicker than a minimum wall thickness of the wall, and at a transition area between bottom and wall, a wall thickness of the wall is continuously increasing towards the bottom, thus, the wall passing over into the bottom in a slope. Furthermore, a method including forming a disc-shaped round blank into a bowl-type hollow cylinder, and upsetting the hollow cylinder in its longitudinal axis so that the bottom material is thickened due to the upsetting operation.

Abstract: At least one transfer channel (9, 29) is formed in the cylinder wall (4, 24) of the cylinder (1, 21) for a two-stroke engine. The transfer channel (9, 29) is closed to the cylinder outer side (5, 25) by a cover (10, 30). The method for making the cylinder (1, 21) provides that the cover (10, 30) is assembled in a first step on the cylinder (1, 21) and, in a second step, the cylinder bore (3, 23) is machined.

Abstract: The invention provides an exhaust system including a cylinder head having a plurality of exhaust ports. Integrally formed with the cylinder head are a plurality of independent and separate tubes. The tubes are cast, molded or otherwise integrally formed with the exhaust ports of the cylinder head. The cylinder head and tubes eliminate the need for an exhaust flange, welding the tubes to the exhaust flange and securing the exhaust flange to the cylinder head. As a result, the present invention has less weight and improved performance over prior art cylinder head and exhaust assemblies.

Abstract: A cylinder head for an internal combustion engine is provided for a motor vehicle. The cylinder head includes, but is not limited to a flow channel, which can be connected to a cylinder. An air duct for injecting gas into the flow channel is connected to the flow channel via a connection channel. The air duct is produced by means of casting and cylinder head provides for a good secondary air injection by means of a simple production.

Abstract: The disclosure relates to surface roughening methods in which a cutting tool having a radial cutting blade with first and second cutting edges is fed along a longitudinal axis of an article while rotating the cutting tool about the axis. The first cutting edge forms a first machined pattern of peaks and valleys on a surface of the article, and the second cutting edge removes at least a portion of the peaks to form roughened fracture surfaces in a second machined pattern defining an arrangement of grooves, corresponding to the valleys, separated by lands, corresponding to the roughened fracture surfaces. The first and second walls may include concave regions within the grooves. The disclosure also provides cutting tools useful in practicing the methods, and cylindrical articles having interior or exterior surfaces roughened using the methods. The methods may have applications to fabrication of cylinder blocks for internal combustion engines.

Abstract: In a process for processing cylinder crankcases having sprayed cylinder barrels, in which process a cylinder crankcase is cast, those surfaces of the subsequent cylinder barrels which are to be thermally coated are roughened, the cylinder barrels are coated by a thermal spraying process, and the cylinder barrels are remachined to final dimensions. After the thermal spraying process, coating material is at least partially removed from the crankshaft-side part of the cylinder crankcase.

Abstract: A production method of a water jacket spacer for use in a cylinder block with a water jacket formed around plural cylinder bores. The method comprises the fist step of integrally forming a tubular spacer body with a peripheral wall and a connecting bridge by way of synthetic resin molding so that corresponding regions of the peripheral wall are connected to each other via the connecting bridge, and the second step of cooling the tubular spacer body, with the connecting bridge fixed thereto, to prevent deformation of the tubular spacer body during the cooling process, and the third step of removing the connecting bridge from the tubular spacer body.

Abstract: Spacers for use with actuator casings are disclosed. An example spacer includes a ring-shaped member defining a central opening and configured to form a part of an actuator casing and to space first and second actuator casing portions a predetermined distance when the first and second casing portions are coupled to the ring-shaped member. The ring-shaped member includes a first surface surrounding the central opening configured to engage the first casing portion and a second surface surrounding the central opening configured to engage the second casing portion. Each of the first and second surfaces includes a plurality of apertures configured to receive threaded fasteners to attach the first and second actuator casing portions to the ring-shaped member.

Abstract: An airless sprayer for paint or the like consists of an electric drive unit connected to a piston. Driven by the electric drive unit, the piston reciprocates within the cylinder, thus spraying the paint or the like. Because of the close tolerance between the piston and cylinder (typically about 0.0002 to about 0.0003 inches), the sprayed liquid provides a seal between the piston and cylinder. To prevent this tolerance from increasing to the point of failure, the cylinder is manufactured from nitride hardened steel. A process for manufacturing the airless sprayer is also disclosed.

Abstract: A method of manufacturing a cylinder block for a multi-cylinder engine is disclosed herein. The cylinder block includes a crankcase and cylinder bores disposed therein separated by cylinder walls. The crankcase is adapted to receive a crankshaft and includes crank chambers disposed therein separated by partition walls. Each of the crank chambers of the crankcase corresponds to one of the cylinder bores of the cylinder block. The cylinder bore side of each partition wall has a honing runoff portion thinner in section than the crankshaft side thereof such that a step face results in the partition walls. Further, a runoff groove is formed in the partition walls of the crank chambers, and also a communication hole is formed at least partially within the runoff groove in at least one of the partition walls to enable communication between crank chambers.

Abstract: A prehardened valve seat insert and a process for forming a prehardened valve seat insert for insertion into a cylinder head or an engine block of an internal combustion engine. The process comprises the steps of (a) forming the valve seat insert; (b) precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylinder head and the engine block without the need for additional seat machining; and (c) treating the valve seat insert to form a wear resistant surface layer prior to inserting the valve seat insert into one of the cylinder head and the engine block.

Abstract: A cylinder housing (1) is cast with a cylinder wall (2) in the making of a cylinder for an internal combustion engine. The cylinder wall delimits an interior space (3) for accommodating a reciprocating piston and, thereafter, a control window (5) is machined into the cylinder wall (2) as an opening of a transfer channel (4) into the interior space (3). A two-stage machining for forming the control window (5) is provided in order to make possible a rapid and cost effective manufacture of the cylinder. In a first step with a work tool (7) having a rotating primary movement (11), a breakthrough (10) is machined into the cylinder wall (2) and, in a second step with a work tool, the breakthrough (10) is widened to the wanted dimensions of the control window (5).

Abstract: A method for forging/molding a coarse blank of an oil cylinder, including steps of: placing burn-in softened aluminum material into a preheated mold; using a first punch head to first forge the aluminum material in the mold cavity from outer side of the molding hole so as to form a blank body of the oil cylinder with a first end cap, a second end cap and a shorter cylinder body; moving out the first punch head and connecting an extension mold with the mold; and immediately using a second punch head to secondarily forge the blank body in the mold cavity from outer side of the extension hole and making the end section of the second punch head extend into the mold cavity to a position near the inner end of the mold cavity, whereby the cylinder body of the blank body outward axially extends to the extension mold into a predetermined length so as to form the oil cylinder.

Abstract: A cylinder deactivation arrangement for an engine is provided. The arrangement includes an engine with main oiling circuit passages and lifter oil gallery control circuit passages formed internal to a cylinder block of the engine. The lifter oil gallery control circuit is arranged so as to provide an oil flow path internal to the cylinder block from the main oiling circuit to the deactivating lifter. A lifter is positioned in the cylinder block and arranged in fluid communication with the lifter oil gallery control circuit. A control valve is positioned in the cylinder block and arranged in fluid communication with the main oiling circuit and the lifter oil gallery control circuit. The control valve is arranged to allow selective fluid communication of oil from the main oiling circuit to the lifter oil gallery control circuit to selectively control actuation of the lifter.

Abstract: A method is provided for machining the stainless steel automotive exhaust components that allows such components to be machined in high volumes and at a reasonable cost. An exemplary embodiment of the method includes the steps of: (a) supporting the manifold on a work structure; (b) clamping the manifold to the work structure; and (c) machining the supported and clamped manifold; (d) where the clamping step includes the step of clamping each of the plurality of inlet coupling flanges of the manifold separately; and (e) the machining step includes the step of machining the interface surfaces of the inlet coupling flanges. In a more detailed embodiment, the supporting and clamping steps orient the planes of the interface surfaces of the inlet coupling flanges of the manifold perpendicular to a spindle access of the milling machine.

Abstract: A system and method for assembling an internal combustion engine and for correlating engine information with a vehicle identification number. The engine includes an engine block and a plurality of pistons. The engine block has a plurality of cylinders formed therein, and the inner diameter of each cylinder is measured and recorded as cylinder information. A specific outer diameter of each of the plurality of pistons is measured and recorded as piston information. One of the pistons is selected for each cylinder based upon the recorded cylinder information and the recorded piston information so as to provide a desired piston clearance for each piston/cylinder combination. Engine information, which includes the piston information for each of the selected pistons and the cylinder information, is recorded, and the engine information is correlated with the vehicle identification number to permit the engine information to be accessed via the vehicle identification number.

Abstract: In a method for machining bores of workpieces with a desired nominal shape of the bores in operative condition, a bore with a desired nominal shape in inoperative condition is produced in a workpiece and the workpiece is then put in operative condition. A deviation of the desired nominal shape of the bore resulting from the operative conditions is determined. Based on the deviation, an initial shape which shape the bore must have in inoperative condition in order for the bore to assume the desired nominal shape in operative condition is the determined. Bores are then produced by employing the determined initial shape as a template.

Abstract: A twin cylinder engine, includes a pair of cylinder members mounted to mounting surfaces of a crankcase, and cylinder heads mounted to the cylinder members. The cylinder members are modular components, which may be pre-assembled with components of the valve train as packaged units before the cylinder members are attached to the crankcase. Each cylinder member rotatably supports a cam gear which extends into the crankcase for driving engagement with the crankshaft. The cylinder members may be configured for either side valve-type (“L-head”), or overhead valve-type (“OHV”) engines, and the cylinder members may also be used in single cylinder engines.

Abstract: A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.

Abstract: A line of small internal combustion engines, including twin cylinder engines and single cylinder engines. The engines each include a crankcase, and one or more cylinder members attached to the crankcase, the cylinder members being separate components from the crankcase. A number of different crankcases are provided for various types of single and two cylinder engines, the crankcases having common mounting structure to which the cylinder members may be attached. Thus, the manner in which the cylinder members are attached to the crankcases is the same for each of the different types of crankcases. Two different types of cylinder members are provided, one having a side valve or “L-head” valve train, and the other having an overhead cam (“OHV”) valve train. The cylinder members are therefore modular components which may be selectively used in a variety of different types of engines.

Abstract: A damper assembly includes a reservoir chamber for supplying hydraulic fluid to a main damper chamber. The reservoir chamber is in fluid communication with damper chamber through an internal fluid passage formed by openings in the damper housing and the reservoir housing. Mating features align the reservoir and damper housing relative to each other.

Abstract: High pressure cylinders comprising backing steel cylinders and tool steel liners are disclosed. An annealed tool steel liner is inserted into the backing steel cylinder, followed by heat treating to harden the tool steel liner. The tool steel liner may be provided as a single continuous tube, thereby avoiding problems associated with segmented liners. The high-pressure cylinders are suitable for use as plastic and rubber extruders injection molding cylinders and the like.

Abstract: A cylinder block production method is characterized by having, as a step prior to a cast-enclosing step of cast-enclosing a cast iron-made cylinder liner within a cylinder block body, an erosion-wash step of washing an outer peripheral wall surface of the cylinder liner and eroding a portion of a base structure of the cast iron forming the outer peripheral wall surface of the cylinder liner so as to form many small protrusions on the outer peripheral wall surface by jetting a high-pressure fluid onto the outer peripheral wall surface of the cylinder liner, in order to improve strength of adhesion between the cylinder liner and the cylinder block body. Since the base structure is partially eroded, complicated-shape small protrusions can be formed. Furthermore, sand and a mold release agent adhering to the outer peripheral wall surface of the cylinder liner can be removed. Therefore, the adhesion strength will improve.

Abstract: A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.

Abstract: At least one transfer channel (9, 29) is formed in the cylinder wall (4, 24) of the cylinder (1, 21) for a two-stroke engine. The transfer channel (9, 29) is closed to the cylinder outer side (5, 25) by a cover (10, 30). The method for making the cylinder (1, 21) provides that the cover (10, 30) is assembled in a first step on the cylinder (1, 21) and, in a second step, the cylinder bore (3, 23) is machined.

Abstract: A method for producing, by forming techniques, an undercut profile in the outer circumferential face of cylinder liners to be cast in place in a crankcase, characterized by the introduction of a bracing inner core into the cavity of a cylinder liner, the introduction of the cylinder liner equipped with bracing inner core into a first forming die equipped on its working faces with a serrated profile, the pressing of the first forming die against the outer circumferential face of the cylinder liner, thus producing a complementary profile in the outer circumferential face, the introduction of the cylinder liner equipped with bracing inner core into a second forming die equipped on its working faces with a smooth surface, and the pressing of the second forming die against the outer circumferential face of the cylinder liner equipped with the complementary profile.

Abstract: An arrangement forms control windows (5) in a cylinder wall (2) of a cylinder housing (1) for a two-stroke internal combustion engine as openings of flow channels (4) in the interior space (3) of the cylinder delimited by the cylinder wall (2). The arrangement includes a driveable tool (7) which can be introduced at a free end (16) of a rotatable tool holder (17) into the interior space (3). The tool (7) can be brought into engagement with the cylinder wall (2) in the position in which the control window (5) is to be formed by transverse movement (13) with reference to a rotational axis (11) of the tool holder (17). A milling tool having a drive axis (19) is provided which lies essentially orthogonally to the rotational axis (11) of the tool holder (17) in order to provide a rapid and cost effective manufacture of a cylinder housing (1) with a precise manufacture of the control windows (5) in the cylinder wall (2).

Abstract: A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.

Abstract: A manifold for housing high-pressure oil on a camless engine includes an extruded aluminum body having first and second ends. First, second and third extruded channels are formed in the body and each extends from the first end to the second end of the body. The manifold has a plurality of switching valve mounting bores configured to receive a plurality of switching valves operative to alternately communicate the channels with intake and exhaust valves of an engine to which the manifold is mounted to affect movement of the valves.

Abstract: A method is provided for forming enlarged cylinder bores in an engine based on a family of internal combustion engines having an original cylinder bore axis for each bore, wherein each cylinder bore is constrained against enlargement toward one side. The method includes providing an offset axis parallel to the original cylinder bore axis and spaced toward an opposite side of the cylinder bore by a dimension equal to one half of a predetermined bore diameter enlargement, and centering the enlarged cylinder bore on the offset axis. The method preserves a minimum wall thickness from the cylinders to camshaft bores between the cylinder banks while the outward enlargement dimension is preferably limited to a value which does not require changing the cylinder head bolt pattern or reduce the wall thickness below minimum values in other portions of the cylinders.

Abstract: A method is provided for forming enlarged cylinder bores in an engine based on a family of internal combustion engines having an original cylinder bore axis for each bore, wherein each cylinder bore is constrained against enlargement toward one side. The method includes providing an offset axis parallel to the original cylinder bore axis and spaced toward an opposite side of the cylinder bore by a dimension equal to one half of a predetermined bore diameter enlargement, and centering the enlarged cylinder bore on the offset axis. The method preserves a minimum wall thickness from the cylinders to camshaft bores between the cylinder banks while the outward enlargement dimension is preferably limited to a value which does not require changing the cylinder head bolt pattern or reduce the wall thickness below minimum values in other portions of the cylinders.

Abstract: The invention relates to a method and a device for inductive hardening of the interior surface of a spectacle shaped bore (2) in a cylinder housing (1) made of steel for a double screw extruder. According to the invention, the outer form of the electric inductor (3) corresponds approximately to the reduced interior contour of the spectacle shaped bore (2). Said inductor (3) is configured in such a manner that in the vicinity of the narrowing elements of the spectacle shaped bore (2) less energy is required for heating the inner surface in relation to the longitudinal section on the periphery of the inductor (3) than that is required for the areas of the inner surface which are remote from the narrowing elements (4a, 4b).

Abstract: Disclosed is a method and apparatus for quickly and accurately determining the amount of metal to be removed from the lower portion of an engine block when the engine is to be stroked, i.e. have a longer, replacement, connecting rod installed to increase the engine's cylinder displacement.

Abstract: The subject invention provides a master cylinder having a compact profile. In particular, the master cylinder comprises a hollow body having a continuous outer wall with a continuous thickness. An end wall is integrally formed with the outer wall at a first end to close an end of an integrally formed bore. A number of apertures are formed within the outer wall to provide fluid communication between the outer wall and the bore. A flange is also integrally formed with the outer wall at a second end to define a fully integrated master cylinder. The outer wall further includes thickened sections extending between an inner surface of the bore and a mounting surface with the thickened sections being at least 30 percent smaller than the inner diameter of the bore for providing the compact profile of the integrated master cylinder.

Abstract: A cylinder block for an axial piston pump or motor is formed from a steel material. The block includes a plurality of bores that each have an internal bore surface of a predefined final material surface finish. The bores are subjected to various machining and heat treating processes to provide a bore surface formed from the same material as the cylinder block, and which has the desired final surface finish. Pistons are mounted within each of the bores for axial movement relative to the cylinder block. Each of the pistons is formed from a steel material and has an exterior surface that is in sliding contact with the internal bore surface. The subject cylinder block is processed to provide a steel-to-steel interface between the bore and piston and eliminates the need for liners to be specially formed or installed within each piston bore.

Abstract: A method for manufacturing a welded cylinder is provided wherein a seal (such as an O-ring seal or a cured polymeric sealant) is disposed between the tube of a cylinder and its welded end plug. The seal is spaced away from the circumferential weld that joins the end plug to the cylinder to reduce the hoop stress in the tube adjacent the weld, thereby reducing the tensile stress at the weld joint.

Abstract: A method for manufacturing a cylinder block provides an abrasion-resistant layer in a cylinder bore by build-up welding. The method applies build-up welding to preformed recesses along an inner surface of the cylinder bore. After build-up welding, final finishing provides a finished bore surface. The method creates an abrasion-resistant surface in areas prone to piston abrasion and manages welding strain to minimize cylinder block distortion.

Abstract: The present invention includes a light metal cylinder block comprising a cylinder running face which is coated with silicon. The invention also includes a method by which the silicon is applied to the running face comprising melting powdered metal silicon, which is fired at the face in a powdered metal beam, under heat of a laser which is fired at the running face at the point of impact of the powdered beam. Furthermore, the invention includes a device with which the cylinder block may be manufactured.

Abstract: A method is provided for producing a cylinder in a two-cycle engine. The cylinder bore is first machined as a preparation for the provision of a coating. The thereby resulting window edges that surround an inlet window are then at least partially chamfered. The cylinder bore is consequently provided with the coating, which at least partially overlaps the chamfered window edge. There thereby results in the region of the window edge a location of least spacing relative to the axis of the transfer channel. The piston liner or gliding surface is finally machined to a finished dimension such that in the region of the chamfered and coated window edge or corner there is formed a coating edge having a wall spacing relative to the location of least spacing, which such wall spacing having a maximum value of 0.7 mm.

Abstract: A method of assembling a cylinder head assembly (11) for use with a cylinder block of an internal combustion engine. The method involves providing a cylinder head slab (17) defining a pattern of intake (21) and exhaust (23) poppet valves. The head slab is provided with a plurality of bolt holes (37) defining a bolt hole pattern. Next, a plurality A and B of valve activation modules, selected from a group of possible modules (15;101;201;301) is provided, each defining a plurality of bolt holes (63;109) which correspond with at least a major portion of the bolt holes (37) in the bolt hole pattern. The next step is selecting one module (15;101;201;301) and bolting it to the cylinder head slab (17).

Abstract: A cylinder and a method for manufacturing a cylinder for an internal combustion engine is provided which avoids the generation of a step portion at the scavenging port without necessitating enhanced precision of the positioning of the working tools or the working location. A raw cylinder body is cast-molded with the scavenging port portion thereof being left closed. Subsequently, this closed scavenging port portion is cut out (or opened) by means of cutting work, etc. The cutting out of the closed scavenging port portion is performed by widening the cylinder bore side thereof at predetermined angles to the planes of the inner wall of the hollow scavenging passageway formed contiguous to the closed scavenging port portion.

Abstract: A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.

Abstract: Method for making a cylinder block for internal combustion engine, in which at least one cylinder liner (10) is arranged inside a mould and aluminium-based material is cast into the mould and cooled, so that the cylinder liner (10) is incorporated in the cylinder block. The cylinder liner (10) is made of aluminium-based material and has protuberances destined to melt in contact with the molten material cast into the mould arranged on its external surface.

Abstract: A method for manufacturing a cylinder block provides an abrasion-resistant layer in a cylinder bore by build-up welding. The method applies build-up welding to preformed recesses along an inner surface of the cylinder bore. After build-up welding, final finishing provides a finished bore surface. The method creates an abrasion-resistant surface in areas prone to piston abrasion and manages welding strain to minimize cylinder block distortion.

Abstract: The present invention relates to a pressing method for obtaining hydraulic cylinders and high-pressure filters, using a semifinished product consisting of a cylindrical part having a blind hole at one end and suitably treated by means of a first chemical surface treatment. The method comprises a first step in which positioning of the semifinished product in a die is performed, followed by a first pressing operation using a first punch acting over part of the depth of said blind hole, so as to define a first machined zone, followed by a second step consisting of first sizing of said first machined zone using a second reverse-profile punch, so as to define a second machined zone. A third step of performing a second chemical surface treatment, followed by a fourth step of pressing of said second machined zone using a third punch, so as to obtain a third machined zone with a desired thickness, and a fifth step of sizing of said third machined zone using a fourth punch, so as to define a flat contact zone.

Abstract: A process (30) is presented for the post-honing cleaning and lubrication of a cylinder (24) of a reciprocating engine (22) prior to assembly thereof. The process (30) includes cleaning (32) the cylinder (24) with a water-and-wetting-agent solution and with a solvent in an effort to remove contaminants. The process (30) also includes lubricating (40) the cylinder (24) with a penetrating oil, and coating (42) the cylinder (24) with an indicating lubricant (28) formed of a powdered mixture of tungsten disulfide and graphite. The indicating lubricant (28) is configured to change color to assume a specific tint when contaminants have been substantially removed from the cylinder (24), and to refrain from assuming that tint when contaminants have not been substantially removed from the cylinder (24).

Abstract: A method and system for machining a cylinder head include loading a cylinder head into a first five axis computer numerically controlled (CNC) machine. A first fixture of the first CNC machine is then located against a top surface of the cylinder head such that the cylinder head is in a horizontal position. The first CNC machine then machines the cylinder head in the horizontal position. A second fixture of the first CNC machine is then located against a bottom surface of the cylinder head such that the cylinder head is in a vertical position. The first CNC machine then machines the cylinder head in the vertical position. The cylinder head is then moved into a second five axis CNC machine. A fixture of the second CNC machine is then located against a bottom surface of the cylinder head. The second CNC machine then machines the cylinder head.

Abstract: A method and system for machining a cylinder head include loading a cylinder head into a first five axis computer numerically controlled (CNC) machine. A first fixture of the first CNC machine is then located against a top surface of the cylinder head such that the cylinder head is in a horizontal position. The first CNC machine then machines the cylinder head in the horizontal position. A second fixture of the first CNC machine is then located against a bottom surface of the cylinder head such that the cylinder head is in a vertical position. The first CNC machine then machines the cylinder head in the vertical position. The cylinder head is then moved into a second five axis CNC machine. A fixture of the second CNC machine is then located against a bottom surface of the cylinder head. The second CNC machine then machines the cylinder head.

Abstract: A method for producing a cylinder block capable of providing sufficient bonding between the cylinder liner and a block body. The cylinder block producing method includes an inner peripheral surface roughening process, outer peripheral surface roughening process, adiabatic particle adhesion process, and melt bonding process. In the inner peripheral surface roughening process, shot blasting is performed to the inner surface of the cylinder liner. In the outer peripheral surface roughening process, semi-spherical dimples are formed on the outer surface of the cylinder liner by sinking the shot balls by their semi-spherical amount into the liner by means of shot blasting. Zn balls and stainless beads each having diameter of 0.4 mm, or Zn balls having diameter of 0.8 mm are used as the shot balls. In the adiabatic particle adhesion process, BN particles are adhered to the inner surface of the cylinder liner.