247results about "Low pressure fuel injection" patented technology

A fuel injection system for an engine of a vehicle includes a throttle body and an elastomeric injection manifold coupled to the downstream end of the throttle body. The injection manifold defines a fuel injector socket. The fuel injection system also includes a fuel injector receivable by the fuel injector socket of the injection manifold and a fuel rail fluidly coupled to the fuel injector. The fuel rail supplies fuel to the fuel injector.

Present embodiments related to throttle body fuel injection systems intended to replace existing carburetors. More specifically, present embodiments relate to retrofitting carbureted engines with electronic fuel injection (EFI) which may be mounted on a manifold of an internal combustion engine and have bores of differing sizes and other characteristics which allow operation of such arrangement.

A fuel injection valve support structure simple in structure is provided which is capable of preventing a fuel injection valve from rotating about an axis of a valve housing thereof without providing a special rotation-preventing piece on an elastic support member. In this support structure, a base plate (15) of an elastic support member (S) is provided with a notch (19) which receives a valve housing (1). A rotation-preventing protrusion (20) which engages with the notch (19) to prevent rotation of a fuel injection valve (I) about an axis (A) of the valve housing (1) is formed on a synthetic resin formation part (6) which covers the valve housing (1) while protruding a coupler (14) to one side.

To provide a two-cycle internal combustion engine which can prevent the blow-through of an air-fuel mixture at scavenging, and can supply the air-fuel mixture which is adapted to an operation state of the engine into a combustion chamber.SOLUTION: A two-cycle internal combustion engine comprises: a fuel injection valve 25 for supplying fuel into a crank chamber 8; an intake passage 17 for sucking only air by negative pressure at an operation of a piston 4; and a scavenging passage 18 for making the crank chamber 8 and a combustion chamber 6 communicate with each other. An intake port 42 and the scavenging passage 18 communicate with each other via a piston groove 44, and air is sucked into the crank chamber 8 through the intake passage 17, the intake port 42, the piston groove 44, a scavenging port 14 and the scavenging passage 18. Then, air which passes through the intake passage 17 is introduced into the scavenging passage 18, and air which is stagnated in the scavenging passage 18 at a finish of air intake is involved in the scavenging.SELECTED DRAWING: Figure 4

An engine system in which blow-by gas with a specific gravity less than 1 with reference to air is generatable includes a cylinder block. The cylinder block includes a cylinder and a crank chamber which are arranged in an up / down direction, the crank chamber being positioned below the cylinder. An internal peripheral face of the cylinder block has a ventilation port that connects to a ventilation passage that connects an internal space of the crank chamber with an external space out of the cylinder block, and that is open. The ventilation port is placed above a center in the up / down direction in the crank chamber.

To suppress vapor lock even when vapor is generated in a fuel supply device caused by the evaporation of fuel.SOLUTION: A fuel supply device (50) comprises a fuel pump (51) delivering fuel from a fuel tank to a fuel passage, a fuel filter (54) located on the downstream side of the fuel passage further than the fuel pump, a branch joint (61) located on the downstream side of the fuel passage further than the fuel filter, and a fuel injection valve (62) injecting the fuel from the downstream end of the fuel passage to an intake passage. In the branch joint, a pair of branch pipes are provided. To one branch pipe, a return pipe (73) is connected for returning the fuel to the fuel pump, and to the other branch pipe, a feed pipe (74) is connected for guiding the fuel to the fuel injection valve. One branch pipe is located at a position higher than the position of the other branch pipe.SELECTED DRAWING: Figure 4

A throttle body fuel injection system including a throttle body with at least one air intake, a fuel injector coupled to the throttle body at a fuel port and an annular ring coupled to the cylindrical inner wall of the air intake. The annular ring includes a primary fuel discharge orifice adjacent to the fuel port and a plurality of secondary fuel discharge orifices arranged radially around the annular ring for spraying atomized fuel into the air intake.

A dual fuel engine system and / or retrofit system includes a cylinder head (102), an intake manifold (202), a first fuel injector (106), and a second fuel injector (204). The cylinder head defines an intake port (104). The intake manifold is coupled to the cylinder head. The first fuel injector extends into the cylinder head and is configured to dispense a first fuel. The second fuel injector extends through the intake manifold and into the cylinder head. The second fuel injector is configured to dispense a second fuel. The second fuel injector (204) is oriented to spray the second fuel into the intake port (104). The intake manifold includes an injector mount (210) extending therethrough, the injector mount separating an airflow plenum (211) of the intake manifold from the second fuel injector (204).

A throttle body arrangement (10) for an internal combustion engine (12), comprising: a throttle body (18) with a pressure chamber (100) in which a supply quantity of liquid fuel is received through a fuel inlet (104) and an outlet (120), and a throttle bore (20) with an inlet (22) through which air is received; a throttle valve (52) carried by the throttle body (18) with a valve head (54) movable relative to the throttle bore (20) to control fluid flow through the throttle bore (20); a metering valve (28; 152) carried by the throttle body (18) and comprising an electrically driven actuator (72) with a valve element (68) that is movable by the electrically driven actuator (72) between an open position in which fuel can flow from the pressure chamber outlet (120) into the throttle bore (20) and a closed position in which less fuel flows through the metering valve (28; 152) and into the throttle bore (20) compared to when the valve element (68) is in the open position, and wherein less fuel includes the state in which no fuel flows through the metering valve (28); and a valve arrangement (106) comprising a valve (108) movable relative to a valve seat (110) to control fuel flow into the pressure chamber (100) through the fuel inlet (104), and a float (112) coupled to the valve (108) to move the valve (108) into a closed position against the valve seat (110) when a threshold level of fuel is present in the pressure chamber (100), characterized in that The throttle body (18) also has a vent (102) which is connected to the pressure chamber (100) and through which gaseous substances in the pressure chamber (100) can escape from the pressure chamber (100).

The present disclosure relates to filter media containing antimicrobial compounds, methods for making the filter media, filter elements, filter systems, and methods for filtering water in the combustion chamber of an internal combustion engine using the filter media.

According to an aspect of the present application, there is provided a radially deformable volume splitter (100; 200) for a fuel injection system (1) of a spark-ignition engine (2). The volume splitter (100; 200) can be tubular and elongate, extending along a longitudinal axis from a first end (102) to a second end (104). The volume splitter (100; 200) can comprise a deformable longitudinal slot (116) operable to deform the volume splitter (100; 200) radially from a first state for insertion into a cavity (18; 218) of the emulsion injection common rail (10) to a second state for use within the cavity (18; 218), and a set of slots (112a-112k) arranged on an outer surface (106) of the volume splitter (100; 200) to connect, in use, an inlet (20) of the cavity (18; 218) to one or more outlets (22a-22d) of the cavity (18; 218).

Fuel injection system comprising (i) a plurality of injectors, the plurality of injectors comprising at least two injectors (40, 50), the plurality of injectors being configured to inject gaseous fuel into an engine (20), (ii) a fuel tank (30) being configured to store gaseous fuel, and (iii) a delivery line (312, 313) being configured to supply gaseous fuel from the fuel tank to each of the plurality of injectors, the fuel injection system comprising: a wear amount estimation unit (72) configured to estimate a wear amount of each of the plurality of injectors; and a determination unit (73) configured to determine, based on the wear amount of each of the plurality of injectors estimated by the wear amount estimation unit, which of the plurality of injectors is preferably operated; and wherein the wear amount estimation unit is further configured to estimate the wear amount of each of the plurality of injectors based on a cumulative number of operating cycles of each of the plurality of injectors; and wherein The determining unit is further configured to calculate a subtraction value, obtained by subtracting the cumulative number of operating operations from a predetermined number of operating operations, for each of the plurality of injectors and preferably to operate one of the plurality of injectors that has the largest subtraction value.

A fuel rail assembly (118) comprising: a fuel rail (120); an adaptor (126); a fuel supply line (160); and a releasable coupling arrangement (162) for releasably coupling the fuel supply line (160) to the adaptor (126). The fuel rail (120) comprises a fuel supply passage (122) by which fuel is supplied to said at least one fuel injector (124). The adaptor (126) comprises a body (128) including an inlet (130). The adaptor (126) is mounted to the fuel rail (120) such that the inlet (130) is in fluid communication with the fuel supply passage (122). The fuel supply line (160) comprises a fuel orifice (164). The fuel supply line (160) is releasably coupled to the adaptor (126) via the releasable coupling arrangement (162) such that the fuel orifice (164) is in fluid communication with the inlet (130) for supplying fuel from the fuel orifice (164) to the fuel supply passage (122) via the inlet (130).

The invention relates to a fuel distributor strip (2) for a fuel device (1), in particular for a fuel injection system or a fuel injection system, comprising a main body (15) for storing and / or distributing fuel, in particular hydrogen, and comprising at least one connection piece (16, 17, 18) to which a fuel valve (6, 7, 8) can be connected, the connecting piece (16, 17, 18) has a connecting surface (20) facing an outer side (21) of the main body (15), an access opening (23) of a connecting channel (22) of the connecting piece (16, 17, 18) being arranged in the connecting surface (20), and wherein the connecting piece (16, 17, 18) is connected to the main body (15) at least by means of a brazing connection on the connecting surface (20). According to the invention, a) the connecting piece (16, 17, 18) has at least one recess (25, 26, 27, 28) in the connecting surface (20) of the connecting piece and / or the main body (15) has at least one recess in the connecting surface (20) of the connecting piece (16, 17, 18) and b) the at least one recess (25, 26, 27, 28) in the connecting surface (20) of the connecting piece (16, 17, 18) and / or the main body (15) has at least one recess in the connecting surface (20) of the connecting piece (16, 17, 18) in the connecting surface (20) of the connecting piece (16, 17, 18). At least one groove on the connecting surface (20) of the connecting piece (16, 17, 18) at least substantially surrounds an inlet opening (21) of the connecting channel (22) of the connecting piece (16, 17, 18), and a fuel system (1) having such a fuel distributor bar (2).

A powertrain is adapted to operate with an alternative fuel by modifying or replacing the high pressure fuel pump to provide a pathway to return fuel from the high pressure fuel pump to a pressure vessel. The fuel return pathway allows there to be a continuous flow that effectively cools the high pressure fuel pump and prevents vapor lock. The return flow pathway is arranged so that fuel flowing into the high pressure fuel pump must flow from a first side of a low pressure chamber to a second side of the low pressure chamber, wherein the first side and the second side are on opposite sides of the high pressure fuel pump. A flow regulator may control the return fuel flow. The flow regulator may include a check valve to sustain a continuous flow and a solenoid to provide a rapid flushing of the high pressure fuel pump.

An aircraft having an engine and a throttle thereof. The throttle has a throttle body (1), the throttle body (1) is provided with a cavity (10) and comprises an inlet port (11) and an outlet port (12) both of which are connected to the cavity (10); a plurality of fuel injectors (2), each of the fuel injectors (2) is arranged on the throttle body (1) and can spray fuel into the cavity (10) of the throttle body (1); and an air filter (3). The air filter (3) is arranged on the throttle body (1) and connected to the inlet port (11). There is an air door (4) that can rotate in the cavity (10) to connect or block the inlet port (11) and the outlet port (12). Additionally, there is an air door driving part connected to the air door (4) and controls the rotation of the air door (4).

A multipoint fuel injection system comprises an injection system segment including a circumferentially extending outer support defining a fuel manifold with a plurality of manifold passages extending circumferentially therethrough. A first connector is included at a first circumferential end of the outer support and a second connector is included at a second circumferential end of the outer support opposite the first circumferential end. The first and second connectors are each configured to connect each manifold passage with a manifold passages of a respective outer support of a circumferentially adjacent injection system segment. The system includes a circumferentially extending inner support and a plurality of circumferentially spaced apart feed arms extending radially between the inner support and the outer support. A plurality of outlet openings extend in an axial direction from each feed arm for feeding respective injection nozzles.

To provide a fuel pressure sensor that can accurately detect fuel pressure.SOLUTION: A fuel pressure sensor is fitted to a fuel pipe while being separated from an inner wall of the fuel pipe and is positioned outside from the inner wall.SELECTED DRAWING: Figure 2

An internal combustion engine (1) includes: a cylinder (5) in which a combustion chamber (3) is defined; a piston (7) which reciprocates in the cylinder (5); an intake port (9) via which air is introduced into the combustion chamber (3); a first fuel supply line (11) via which a first fuel (F1) is delivered to the combustion chamber (3) or the intake port (9); and a second fuel supply line (13) which is provided separate from the first fuel supply line (11) and via which a second fuel (F2) having a lower reactivity than that of the first fuel (F1) is delivered to the combustion chamber (3) or the intake port (9). The internal combustion engine (1) may be provided with an abnormal combustion detector (33) configured to detect abnormal combustion in the combustion chamber (3) and a fuel supply controller (30) configured to execute control, in response to the abnormal combustion being detected by the abnormal combustion detector (33), such that the amount of the first fuel (F1) to be delivered is decreased and the amount of the second fuel (F2) to be delivered is increased.

The application relates to the field of aeroengines, in particular to a two-stroke aero-piston engine air intake system and an air intake flow control method. The system comprises an air filter, a throttle body, an oil injector, a reed valve and a fuel supply unit for supplying oil to the oil injector which are communicated through a connecting pipeline, and further comprises a cooling control subsystem, the cooling control subsystem comprising a cooling injector which is arranged on the connecting pipeline downstream of the throttle body and upstream of the oil injector; the inner wall surface of the connecting pipeline is provided with a non-uniform protruding structure to improve the proportion of the air intake along the resistance. The scheme can solve the technical problem that the air intake flow of the two-stroke aero-piston engine has large discreteness under low load, and realizes the technical effect of improving the consistency of the air intake flow under the low load of the engine.

The present invention provides a fuel injection valve support structure which has a simple structure and which makes it possible to prevent a fuel injection valve from rotating about the axis of a valve housing thereof, without providing a special rotation-stopping piece to an elastic support member. In this support structure, a notch (19) which receives a valve housing (1) is provided to a base plate (15) of an elastic support member (S), and a rotation-preventing protrusion (20) which engages with the notch (19) and prevents rotation of a fuel injection valve (I) about the axis (A) of the valve housing (1) is formed in a synthetic resin formation part (6) that covers the valve housing (1), with a coupler (14) protruding to one side.

An injector and rail assembly (10,fig.1) comprising a fuel injector 22 provided with a ring flange 48 and an injector head 20 for receiving fuel. The rail assembly comprises a common rail housing (12,fig.1) defining a reservoir volume 14. The rail housing comprises at least one socket 16 having a bore 18 for delivering fuel from the reservoir volume to the injector head. The injector and rail assembly further comprises a mechanical connector 26 for sealingly mounting the fuel injector to the socket. The connector has an upper portion 50 to threadedly engage an outer surface 28 of the socket and a lower portion 54 having a first face 66 to interface with a second face 62 of the ring flange. At least one of the first and second surfaces define a curved surface. The first face may be convexly curved and the second surface may be concavely curved.

This technology provides a way to heat a pressure regulator with a simple configuration. [Solution] The ammonia supply system comprises a vaporizer for vaporizing liquid ammonia and a pressure regulator for adjusting the pressure of the gaseous ammonia after vaporization by the vaporizer. The vaporizer has a spiral ammonia flow path through which liquid ammonia and gaseous ammonia flow. The pressure regulator is located inside the spiral ammonia flow path.

The present invention provides a delivery pipe for an engine that can support a pipe main body in a posture, in which an opening portion is directed upward, in welding of a plug and can prevent unnecessary extension of an entire length. A delivery pipe of the present invention includes: a pipe main body 2 being formed of a synthetic resin, in which a large-diameter portion 5 having a collar shape is formed on one end side, one end of a fuel passage 4 in an internal portion and along an axis line has an opening portion 6 formed in the large-diameter portion 5, and as outer periphery protrusion portions, bracket portions 8l and 8r and a plurality of injector connection portions 10l and 10r are integrally formed with an outer periphery surface; and a plug 3 being joined to the large-diameter portion 5 and blocking the opening portion 6. A first support surface 17 to be supported by a first fixing jig 21r is formed on the injector connection portion 10r closest to one end side, a second support surface 19 to be supported by a second fixing jig 21l is formed on an opposite side to the first support surface 17 around the axis line as a center and on another end side of the large-diameter portion 5, and the first and second support surfaces 17 and 19 have flat surface shapes facing another end side.

A two-stroke engine includes a cylinder and a piston configured to reciprocate in a bore portion along an axial direction. An intake port is opened and closed by the piston. A two-stroke engine includes a crankcase connected to the cylinder and having a crank chamber, a crank mechanism disposed in the crank chamber and configured to rotate about a crankshaft, a connecting rod having a small end connected to the piston and a large end connected to the crank mechanism, and a fuel injector attached to the crankcase and configured to inject mixed fuel in a tangential direction of a circumferential trajectory of the large end to spray the mixed fuel to the large end.

A fluid distributor (1) for a fuel injection device (100), in particular a fuel distributor rail (1) for a fuel injection device (100) of a mixed compression, externally ignited internal combustion engine, having a tubular base body (2) which is preferably processed by single-stage or multi-stage forging, wherein a first high-pressure outlet (9), a second high-pressure outlet (10) and a third high-pressure outlet (11) are arranged on the base body (2), wherein the second high-pressure outlet (10) is arranged offset with respect to the first high-pressure outlet (9) in a first direction (X1) along a longitudinal axis (4) of the tubular base body (2) by a predefined distance (24), wherein the third high-pressure outlet (11) is arranged offset with respect to the second high-pressure outlet (10) in the first direction (X1) along the longitudinal axis (4) by the predefined distance (24), wherein a first holding element (5) and a second holding element (6) for at least indirectly fastening the base body (2) are arranged on the base body (2), and wherein the first holding element (5) and the second holding element (6) are arranged on the tubular base body (2) such that, viewed along the longitudinal axis (4), an axis (7) of the first holding element (5) is positioned at most 0.5 times the predefined distance (24) apart from an axis (12) of the first high-pressure outlet (9) in the first direction (X1), and such that, viewed along the longitudinal axis (4), an axis (8) of the second holding element (6) is positioned at most 0.5 times the predefined distance (24) apart from an axis (14) of the third high-pressure outlet (11) against the first direction (X1).

A fuel droplet miniaturization device is provided, which suppresses the influence of flow electrification and efficiently converts fuel liquid into tiny droplets, thereby achieving an increase and stabilization of engine output. The fuel droplet miniaturization device is composed of a fragmentation promotion component (30), and the fragmentation promotion component (30) is composed of wires, mesh sheets, belts, etc. formed of metal, semiconductor, polymer, ceramic, glass, etc. The fragmentation promotion component (30) is arranged between the ejection port (20) of a vaporizer or a fuel injection device and the intake valve (41) of the engine, so that the fuel liquid ejected from the ejection port (20) of the vaporizer or the fuel injection device collides with the fragmentation promotion component (30), and the fuel liquid is crushed / scattered by the impact to promote the formation of tiny droplets.

The present invention relates to a method for determining one or more characteristic times (NOS, NOE, NCS, NCE) of a fuel injection performed by a fuel injector of an internal combustion engine, as well as a computing unit and a computer program for implementing the method, in which a signal (S) is received from a sensor (36) detecting the fuel pressure change due to the injection of the fuel injector and is evaluated accordingly by the method.