Abstract: A fuel distributor for distributing fuel supplied by pressure through a fuel feed pipe by a fuel feed system to a plurality of fuel injectors is capable of effectively reducing the amplitude of a pulsative pressure wave and the sound levels of transmitted sounds. The fuel distributor includes a fuel rail, and a fuel distribution line including a pipe fitting connected to the fuel feed pipe, and first and second branch pipes each having one end connected to the pipe fitting and the other end connected to the fuel rail. The first and the second branch pipes are connected respectively to different parts of the fuel rail.

Abstract: A common rail fuel injection device for internal combustion engines includes a housing, a high-pressure fuel connection, and a fuel return connection including a plug part for connection to a fuel return line. To make the fuel injection device easier to assemble, the fuel return connection includes a socket part, which is secured in fuelproof fashion in a fuel return opening in the housing and onto which the plug part is placed in fuelproof fashion.

Abstract: In an accumulation type fuel injection system for an internal combustion engine, a common rail is formed with an accumulation chamber inside a peripheral wall portion so that a central axis of the accumulation chamber is deviated from that of the common rail, which has a cross section in a complete round shape. Thus, a thick wall portion having thicker wall than other portion of the peripheral wall portion is formed in the peripheral wall portion. A plurality of pipe connecting portions is formed radially inside the thick wall portion. A plurality of pipe connectors is formed separately from the common rail and is connected to the common rail at the pipe connecting portions. As a result, machining of an outer periphery of the common rail is simplified.

Abstract: The present invention relates to an accumulator-type injection system for injecting fuel from an accumulator into a combustion chamber of an internal combustion engine by means of injectors, the injectors being arranged completely within the cylinder head of the internal combustion engine.

Abstract: A fuel-injection system for the injection of fuel into an internal combustion engine includes at least one fuel injector and a fuel-distributor line as well as for each fuel injector a corrugated-tube bellows, which is able to be connected to an inflow section of the fuel injector. Deformation-energy absorbing elastomeric material abuts with an initial stress against at least some sections of the corrugated-tube bellows.

Abstract: A mounting arrangement with a fuel rail having a plurality of fuel injector cups, a plurality of fuel injectors, and a clip. The fuel injector cups include a cylindrical tube defining a longitudinal axis, a fuel rail mounting section disposed at a first end of the tube, and a lip at a second end of the tube. Each of the fuel injectors corresponding to one of the plurality of fuel injector cups. The fuel injectors have a housing with a retention groove. The clip engages both the lip of the fuel injector cup and the retention groove in the housing of the fuel injector to secure the fuel injector to the fuel injector cup and allow the fuel injector to reciprocate along the longitudinal axis.

Abstract: A common rail has an accumulation pipe in which high pressure fuel is accumulated, a pipe joint to which a high pressure pipe is connected and an orifice member housed inside the pipe joint. The orifice member is provided with a conduit through which a fuel port formed in the accumulation pipe communicates with the high pressure pipe. The conduit is provided at an end thereof with an orifice. The orifice serves to reduce pressure pulsation generated by fuel injection of an injector so that fuel pressure in the common rail is stable. Since the orifice is formed in the orifice member housed in the pipe joint, the orifice is easily and accurately manufactured at a lower cost, compared to an orifice formed in the accumulation pipe. It is easy to standardize the manufacture of plural models of common rails whose orifice diameters are different.

Abstract: A fuel injection system for injecting fuel into an internal combustion engine, including at least one fuel injector and a fuel rail, includes, for each fuel injector, an intake connectible to an intake section of the fuel injector. A corrugated tube is arranged between the intake of the fuel rail and the intake section of the fuel injector. The corrugated tube includes two identical end sections that are able to be brought together concentrically with guide sections of the intake section of the fuel injector and of the intake of the fuel rail. Sealing arrangement are undetachably arranged at the end sections.

Abstract: A fuel injection system for a piston engine, in which the piston engine comprises an engine block with cylinders arranged thereto and at least one fuel injector nozzle arranged for each cylinder and connected to the fuel injection system and in which the fuel injection system comprises at least one fuel pressure accumulator. The fuel injection system comprises a dedicated fuel pressure accumulator for each cylinder.

Abstract: A high-pressure fuel injection pipe has a connecting head portion increased in diameter by buckling molding at the end of a thick and small-diameter metallic pipe. An under-head portion of the connecting head is formed with a thick wall portion that satisfies conditions of: a radius of curvature R1 of a portion A of the thick wall portion continuing to the connecting head is 0.03 to 0.15 times the outer diameter of the pipe; a radius of curvature R2 of a portion B continuing from the portion A of the thick wall portion to a straight pipe portion is 0.3 to 1.5 times the outer diameter of the pipe; and a maximum diametrical size w of the thick wall portion is 0.25 to 0.4 times a maximum diametrical projecting length W of the connecting head.

Abstract: A fuel injector includes: a body that extends along a longitudinal axis between an inlet and an outlet; a seat, which is coupled to the body proximate the outlet, defines an opening through which fuel is adapted to flow into the internal combustion engine, an armature, which moves along the longitudinal axis between first and second configurations with respect to the seat; and an inlet tube assembly, which is coupled to the body proximate the inlet, includes first and second inlet tube members. The first inlet tube member extends along the longitudinal axis between proximal and distal ends, and the proximal end and the inlet of the body provide a first fluid-tight coupling. The second inlet tube member extends along a bending path between first and second end, and the first end and the distal end of the first inlet tube member provide a second fluid-tight coupling.

Abstract: A fuel-injection system for injecting fuel into an internal combustion engine, having at least one fuel injector and a fuel-distributor line, is provided with an inflow for each fuel injector, which has a flexible section and is connectable to an inflow section of the fuel injector. The flexible section is made up of three concentric sleeve sections which radially overlap at least partially and are interconnected by bends, doubled when viewed in the axial cross section.

Abstract: An independent electrical module 26 distributes an electrical signal to the terminals 24 of a fuel injector device in an engine. The module 26 comprises a self-supporting plastic lead frame 28 with copper ribbons 30 disposed on the plastic frame 28. Pluralities of terminal connectors 32 are separate from and movable relative to the frame 28 for being connected to the terminals 24. The ribbons 30 continue in a free and self-sustaining support portions 31 between the frame 28 and the terminal connectors 32 and are bendable for allowing movement of the connectors 32 relative to the frame 28. Each of the connectors 32 includes a polymeric body defining a pair of the sockets 36 with an electrical contact 38 in each of the sockets 36 and a pair of the bendable support portions 31 paired with the contacts 38 in each connector 32.

Abstract: A high-pressure fuel injection pipe having connecting head portion is provided which is capable of eliminating a fear of the occurrence of cavitation erosion of the inner surface of the connecting head portion and a fatigue failure of the same head portion by having a contour of a cross section of an annular pocket occurring in an inner part of the connecting head portion during a head portion processing operation extend shallowly and gently. This fuel injection pipe has at a connecting end portion of a thick-walled steel pipe having a relatively small diameter, including a seat surface, an annular flange formed so that the flange is axially spaced from the seat surface, and a conical surface connected to the seat surface, extending therefrom to the annular flange and tapering off to a free end of the connecting head portion, wherein the conical surface is provided at a part thereof with an annular, shallow, cross-sectionally curved recess.

Abstract: In one embodiment, a cylinder head (10) and a runnerless intake manifold (12) are assembled together and cooperatively define an air manifold (14) and a fuel manifold (16) for supplying air and fuel respectively to engine cylinders in an engine block to which cylinder head (10) is fastened. In another embodiment, the air manifold is the same, but the fuel manifold (66) is defined by a bore (68) and holes (70) in the intake manifold (60).

Abstract: To enable a reduction of the number of fuel pipes and joint parts to facilitate piping work, maintenance and inspection. An engine fuel injection apparatus includes first fuel injection valves provided on an upstream side of an air intake passage of an engine, second fuel injection valves provided on a downstream side of the air intake passage, and a fuel pump for supplying fuel to the first and the second fuel injection valves. The second fuel injection valves are positioned at a level lower than the first fuel injection valves, and the fuel pump is connected to the second fuel injection valves via the first fuel injection valves by fuel feed pipes, so that fuel does not return to a fuel tank of the engine.

Abstract: A double walled fuel line connects diesel fuel injectors in a common rail system. An inner line carries high pressure fuel from a fuel pump to the fuel injectors. Low pressure return fuel flows back through an outer fuel line which acts as a return line. The double walled line reduces the number of separate pipe connections needed in the system and provides protection against loss of high pressure fuel from the system as well as a simplified method for detecting fuel leaks. Monitoring fuel pressure in the low pressure line allows a fuel pressure sensor to detect leaks in the system by comparing fuel pressure in the low pressure line against typical line pressure. Higher than normal pressure in the low pressure line indicates a leak in the high pressure line. Lower than normal pressure indicates a leak in the low pressure return line.

Abstract: An apparatus for and method of returning surplus fuel from a fuel injector (103) utilizes an internal channel (108) of the fuel injector (103) and a fuel return passage in a cylinder head (101) of an internal combustion engine (100). Each fuel injector (103) may be partially disposed in the fuel return passage (113), which may have openings (301) that are at least partially shaped to receive at least a part of the fuel injector (103). One or more ports (109) through which surplus fuel exits the fuel injector (103) are disposed adjacent to an optional groove (111) or adjacent to the openings (301) of the fuel return passage (113). External fuel return lines to each of the fuel injectors (103) are thus eliminated.

Abstract: A returnless type fuel delivery pipe is provided for each cylinder bank of an opposed type engine. A connecting pipe is connected to this pair of fuel delivery pipes, a supply pipe is connected to this connecting pipe, thus coupling the fuel delivery pipes with the fuel tank. The fuel delivery pipes are made to be capable of absorbing and reducing pressure pulsation through elastic deformation of the external walls thereof, and the supply pipe is connected to an intermediate section of the length of the connecting pipe. Pressure pulsations with opposite phases caused by fuel injection of the fuel delivery pipes interfere with and attenuate each other in the supply pipe at or near intersection thereof with the intermediate section of the connecting pipe.

Abstract: A fuel supply device for an internal combustion engine having at least one cylinder that is formed in a cylinder block, a fuel injection valve and a fuel passage that supplies fuel to the fuel injection valve, includes a portion of the fuel passage that is formed as a delivery pipe that is embedded in a cylinder head and is joined to an upper portion of the cylinder block. The fuel injection valve is positioned so that it intersects the delivery pipe and receives the supply of fuel from the side at a portion that intersects with the delivery pipe, and a sealing member is positioned at the joint portion between the delivery pipe and the fuel injection valve.

Abstract: A double walled fuel line connects diesel fuel injectors in a common rail system. An inner line carries high pressure fuel from a fuel pump to the fuel injectors. Low pressure return fuel flows back through an outer fuel line which acts as a return line. The double walled line reduces the number of separate pipe connections needed in the system and provides protection against loss of high pressure fuel from the system as well as a simplified method for detecting fuel leaks. Monitoring fuel pressure in the low pressure line allows a fuel pressure sensor to detect leaks in the system by comparing fuel pressure in the low pressure line against typical line pressure. Higher than normal pressure in the low pressure line indicates a leak in the high pressure line. Lower than normal pressure indicates a leak in the low pressure return line.

Abstract: A connector arrangement for use in a fuel system, the connector arrangement comprising a bridge member shaped for cooperation with at least first and second members to be connected to a housing, and a clamp arrangement for clamping the bridge member to the housing, the bridge member transmitting a clamping load from the clamp means to the first and second members. The invention also relates to a connector arrangement comprising a plurality of high pressure fuel pipes which are supplied with fuel from a common inlet passage, the common inlet passage being arranged, in use, to receive fuel from a high pressure fuel supply. Each of the pipes comprises one or more outlet region which is connectable with an inlet region of a respective injector forming part of the fuel system to permit high pressure fuel to be supplied to said injector.

Abstract: Cylinder heads 100a to 100f are respectively provided with fuel injectors 101a to 101f. Each of the fuel injectors 101a to 101f is connected to each of joints 105a to 105f in a common rail 105 extending linearly through fuel injection pipes 103a to 103f. In this example, it can be achieved to allow all the fuel injection pipes 103a to 103f to have the same length by crossing the injection pipes 103b, 103c, 103d and 103e to connect. With this configuration, it is possible to reduce the irregularities in the amount of fuel injection and to enhance the engine performance.

Abstract: In a pressure accumulator vessel of a high pressure fuel supply device, a chamfered section is formed in a connection between an accumulation chamber and a corresponding fuel passage. An inner plated part, which includes a plating layer, is formed along a wall surface of the accumulation chamber, a wall surface of the fuel passage and a wall surface of the chamfered section. The pressure accumulator vessel further includes connecting portions and sealing portions. The connecting portion is formed to join with a fuel pipe. The sealing portion is formed adjacent to the connecting portion to fluid-tightly engage with the fuel pipe. Each unplated part is formed along a wall surface of the corresponding connecting portion and a wall surface of the corresponding sealing portion.

Abstract: Fuel is conveyed by at least one high-pressure pump from a low-pressure region into a high-pressure region including a pressure-accumulator line consisting of at least two separate accumulator units connected to one another by means of feed lines, and to fuel injectors for the cylinders. The accumulator units each have an accumulator volume for serving at least two cylinders, and accumulator covers provided on both end faces. All the functional units are integrated into these accumulator covers in terms of fuel delivery and transfer, and at least one separate pump accumulator is arranged in the high-pressure region between the high-pressure pump and the assembled pressure-accumulator line. The pump accumulator is connected to at least one accumulator cover of an accumulator unit of the pressure-accumulator line for fuel conveyance and is capable of being acted upon by at least one high-pressure pump.

Abstract: A pulsation reducing system for a fuel line of an internal combustion engine, especially for an automotive engine equipped with an electronic fuel injection system is provided. The system comprises a fuel delivery rail, a fuel tank, and a longitudinal main fuel pipe. A first flexible tube is arranged between the fuel delivery rail and the main fuel pipe. A second flexible tube is arranged between the main fuel pipe and the fuel tank. A small-ID tubular portion is arranged within the first tube or near the connecting portion of the first tube. The inside diameter of the small-ID tubular portion is smaller than that of said main fuel pipe. The length of the small-ID tubular portion is set between 10 to 50 times of the inside diameter of the small-ID tubular portion itself. Thus, standing waves and resultant pressure pulsations caused by the fuel delivery rail are reduced by the small-ID tubular portion.

Abstract: A high-pressure fuel accumulator for a fuel injection system of an internal combustion engine, in particular for a common-rail fuel injection system, has an elongated base body having an accumulator space for high-pressure fuel extending in the longitudinal direction of the base body, communicating with multiple connecting bores. A relief space connected to a low-pressure connection is provided in the base body, with a drain channel from the accumulator space opening into it. A pressure regulating valve is installed in the base body for opening and closing the drain channel.

Abstract: An intake manifold (10) includes a fuel rail cavity (30) which receives a metallic fuel rail (14) enclosed by a molded fuel rail cavity cover (32). The fuel rail (14) communicates with each of a plurality of engine cylinders (16) through a fuel module (18). An injector cup (28) fits upon each module cylinder to provide an interface between the fuel module and the fuel rail. Another intake manifold (10) includes a fuel rail (14) which directly interfaces with each fuel module (18) through a bellows (38) attached directly thereto.

Abstract: An intake manifold (10) includes an integral fuel rail (14) at least partially surrounded by a volume (22). The volume (22), being adjacent the fuel rail (14), minimizes the permeation of fuel out of the fuel rail (14). The volume (22) is also utilizable as a sealed storage space to contain an air induction component (26) to more effectively utilize the packaging space of the intake manifold (10).

Abstract: A body member of a common rail is formed with an accumulator chamber hole that is a through hole providing first and second openings on both ends of the body member. A sealing plug is inserted into the accumulator chamber hole from the second opening and is press-fitted into a reduced diameter part of the accumulator chamber hole so far as the sealing plug contacts a contacting part near the first opening. Thus, the sealing plug closes the first opening. When high-pressure fuel is accumulated in the accumulator chamber, the sealing plug is pressed against the contacting part. Accordingly, the sealing plug and the contacting part are adhered with each other tightly. Therefore, leak of the fuel is surely prevented.

Abstract: A fuel-injection system for injecting fuel into an internal combustion engine, having at least one fuel injector (2) and a fuel-distributor line, is provided with an inflow (3) for each fuel injector (2), which has a flexible section (16) and is connectable to an inflow section (6) of the fuel injector (2). The flexible section (16) is made up of three concentric sleeve sections (9, 11, 13) which radially overlap at least partially and are interconnected by bends (14), doubled when viewed in the axial cross section.

Abstract: A fuel injection system for injecting fuel into an internal combustion engine, including at least one fuel injector (2) and a fuel rail, has, for each fuel injector (2), an intake (6) connectible to an intake section (9) of the fuel injector (2). A corrugated tube (3, 21) is arranged between the intake (6) of the fuel rail and the intake section (9) of the fuel injector (2). The corrugated tube (3, 21) has two identical end sections (4a, 4b) that are able to be brought together concentrically with guide sections (5a, 5b) of the intake section (9) of the fuel injector (2) and of the intake (6) of the fuel rail. Sealing means (17) are undetachably arranged at the end sections (4a, 4b).

Abstract: A fuel mixer box is provided for supplying a fuel mixture to each cylinder of an engine. The fuel mixer box includes a housing defining a chamber for receiving combustion gases generated by the engine during the operation thereof. Input conduits have inputs connectable to a fuel source for receiving fuel therefrom and outputs. Output conduits have inputs communicating with the outputs of corresponding input conduits and outputs connectable to corresponding cylinders of the engine. In addition, the output conduits communicate with the chamber to receive combustion gases to be mixed with the fuel to provide the fuel mixture. In addition, fuel may be supplied directly to the output conduits through corresponding venturis within the housing.

Abstract: A combined air intake manifold and fuel delivery rail for an internal combustion engine which decreases manufacturing and assembly costs, as well as the weight of the engine. An air channel formed in a hollow portion of the manifold registers with air intake ports in the engine head which lead to the individual cylinders of the engine. An elongated recess in the underside of a mounting flange forms a fuel supply channel which communicates with fuel inlet openings in the engine head leading to fuel injectors for the engine cylinders. Seals may be provided between the manifold and the engine head to seal the air channel and the fuel supply channel.

Abstract: A fuel-injection system (1) for the injection of fuel into an internal combustion engine includes at least one fuel injector (2) and a fuel-distributor line (4) as well as for each fuel injector (2) a corrugated-tube bellows (3), which is able to be connected to an inflow section (5, 16) of the fuel injector (2). Deformation-energy absorbing elastomeric material (15, 22) abuts with an initial stress against at least some sections of the corrugated-tube bellows (3).

Abstract: To enable a reduction of the number of fuel pipes and joint parts to facilitate piping work, maintenance and inspection. An engine fuel injection apparatus includes first fuel injection valves provided on an upstream side of an air intake passage of an engine, second fuel injection valves provided on a downstream side of the air intake passage, and a fuel pump for supplying fuel to the first and the second fuel injection valves. The second fuel injection valves are positioned at a level lower than the first fuel injection valves, and the fuel pump is connected to the second fuel injection valves via the first fuel injection valves by fuel feed pipes, so that fuel does not return to a fuel tank of the engine.

Abstract: A fuel rail is provided which includes a housing formed by a first member with a first thickness. A bracket is provided, connected to the first member to connect the fuel rail to an internal combustion engine. A second stamped member is provided and is sealably connected to the first member to form a control volume therewith. The second member has a second thickness that is materially lower than the first thickness. Accordingly, the second member has a wall to damp pulsations caused by the opening and closing of the injectors fluidly connected with the rail.

Abstract: A fuel-injection system (1) for injecting fuel into an internal combustion engine, having at least one fuel injector (2) and a fuel-distributor line (4), is provided for each fuel injector (2) with a connecting piece (3), which is connectable to an inflow section (21) of the fuel injector (2). The connecting piece (3) is connectable to the fuel injector (2) via a screw connection made up of a screw cap (23) and a thread (25). A retaining sleeve (26) is able to be slipped with form locking over the screw cap (23) and a counter-hold section (27), matched in form, on the side of the thread (25), in order to prevent a twisting of the screw cap (26) and the thread (25) relative to one another.

Abstract: An integrated fuel delivery system is cooled by induction air providing a higher density air/fuel mixture to fuel injectors. The fuel delivery system is integrated within an intake passage body eliminating the need for additional fuel delivery conduits, thus decreasing the size of the engine and lowering the production costs of the outboard motor. The integrated fuel delivery system enables the operator to enjoy compact engine design, improved engine performance and increased fuel efficiency.

Abstract: An integrated control and fuel delivery system having an intake manifold that receives a portion of an airflow and delivers air to an engine and a fuel spacer that receives the air from the intake manifold. The fuel spacer includes a wiring harness. A control module is disposed on the fuel spacer adjacent to the intake manifold of the engine.

Abstract: A support structure for a fuel supply system of a V-type engine having a mechanical connection to fixedly connect an intermediate portion of a fuel supply conduit portion arranged to straddle between the cylinder heads in two banks of the V-type engine to a water jacket assembly disposed to bridge between and rigidly connected to the cylinder heads to thereby provide a rigid vibration-suppressing support for the fuel supply conduit portion of the fuel supply system whereby generation of the working sound of respective fuel injection valves in every cylinders of the V-type engine is suppressed and reduced.

Abstract: In fuel rail/fuel conduit connecting structure in an engine for an outboard engine system, a first connecting bore opens into an end face of a fuel rail, and a second connecting bore opens into an end face of a terminal member having a connecting pipe portion which is projectingly provided on one side thereof and to which an end of the fuel conduit is connected. One of halves of a joint collar is fitted to an inner peripheral surface of the first connecting bore with a first seal member interposed therebetween, and the other half of the joint collar is fitted to an inner peripheral surface of the second connecting bore with a second seal member interposed therebetween. Thus, it is possible to connect the fuel rails and the fuel conduits to each other, while providing reduction in number of parts and number of assembling steps for the connecting structure and moreover, the connecting structure is excellent in corrosion resistance.

Abstract: In a fuel high pressure accumulator for fuel injection devices an intersecting region between a storage chamber and a connection opening of a connection pipe, as well as a region of an outer wall which is opposite to the connecting region are designed to improve pressure strength.

Abstract: A fuel supply apparatus for an engine according to the present invention comprises: a plurality of injectors 13 for injecting a fuel to an intake manifold of an engine; a delivery rail 20, to which the plurality of injectors 13 are attached, for distributing the fuel to each of the injectors 13; and a fuel tube 11 for feeding the fuel, which is delivered forcedly by means of a fuel pump, to the delivery rail 20. The body portion of the delivery rail 20 has side portions having different areas, and an orifice portion wherein the end portion of the fuel tube 11 is connected to the side portion 20a having the largest area of the all side portions.

Abstract: In a component, in particular a high-pressure part for a fuel injection system, having intersecting bores, at least one bore of the two intersecting bores is designed with a flat region, and the component has inherent compressive stresses in the area of the flat region of the bore. This yields an increase in strength of the component in the area of the intersection point of the two bores.

Abstract: A composite fuel rail for delivering fuel to the fuel injectors of an internal combustion engine, includes an elongate body having a plurality of axially spaced transversely extending fuel injector sockets. The elongate body also includes an elongate, axially extending fuel passage intersecting the sockets to supply fuel to the sockets. The elongate body has an elongate polymer inner liner made of a chemically inert material that does not degrade substantially when exposed to fuel. The elongate body further includes a fiber reinforced outer shell extending over and covering the inner liner.

Abstract: The present invention provides an injector integrated module that can be easily incorporated at the engine body side and whose weight can be decreased, wherein respective injector members 10 are inserted into injector inserting holes 43 of a flexible wiring member 40, and the flexible wiring member 40 is held and fixed between a collar-shaped holding portion 20 formed at the outer circumferential portion of the respective injector members 10 and injector fixing members 30 externally fitted from the lower end portion of the respective injector members 10. And, respective lead-out connection end portions 41a of the flexible wiring member 40 are pressed to connection pieces 14 formed at one side portion of the injector members 10 in the respective injector fixing members 30, so that the lead-out connection end portions 41a are electrically connected to the connection pieces 14.

Abstract: The invention relates to a common rail for a common rail fuel injection system of an internal combustion engine, and to a method of making such a common rail, having a hollow base body that is equipped with a plurality of connection openings. To enhance the high-pressure strength, the interior of the base body is embodied as substantially flat in the region of the connection openings.

Abstract: The invention relates to a high-pressure fuel reservoir a common rail fuel injection system of an internal combustion engine, with a plurality of fittings for connection fuel lines. In order to improve the mobility of the fuel lines in the connections, an intermediary piece is disposed in each of the fittings between the high-pressure fuel reservoir and the fuel lines.

Abstract: A method for optimizing the geometry of a line providing fluid communication between an outlet of a pump and an inlet, the pump and inlet each having a fixed location, where the pump imposes a periodic pressure pulse on the tubing composing the line. The method comprises the steps of identifying a basic design of the line using conventional industry practices for the specific application and making an initial determination as to the minimum number of bends which are required by the basic line design. If the tubing must be bent, the bend routing is established to best fit the installation constraints set by the design layout, the radii of the bends is maximized within installation constraints using one common radius, a finite element analysis is performed to determine the minimum and maximum loading on the tubing imposed by the expected pressure pulse and the material of the tubing is selected to satisfy design safety factors with the minimal material cost.