Abstract: The invention relates to a method for controlling an injector in a common rail system, comprising the following steps: detecting (E2) an increase between an observed static flow rate and a reference static flow rate and determining (E3) a corrected rail-pressure setpoint (Pcor) guaranteeing the same quantity of fluid injected with the observed static flow rate as that injected with a reference pressure (Pref) and the reference static flow rate. The invention thus advantageously makes it possible to maintain the same duration of injection.

Abstract: A multiflow pump for fluids, having an electromagnetic translator drive, a displacement piston unit, a pump head, and at least one outlet valve device. The displacement piston contains a bearing journal with a spring receptacle, a carrier plate, and a plurality of pump pistons, wherein the displacement piston unit is configured in one piece.

Abstract: A low pressure regulator for a high pressure fuel pump includes a standard damping orifice, providing a constant level of piston movement damping by enabling a fluid pathway between a spring chamber and a return line. The low pressure regulator also includes a further damping orifice, which is covered by the piston when discharge port holes are open, the further damping orifice providing a further, variable level of piston movement damping by providing a further fluid pathway between the spring chamber and return line. The further damping orifice is open in a hydraulic accumulator mode and closed in a regulator mode, thereby reducing pressure spikes caused by insufficient spring chamber filling.

Abstract: Various systems and methods are described for generating vacuum within an engine intake. A system may comprise a throttle body with a slideable throttle body and a throttle fixture with a hollow interior passage located therein.

Abstract: An energy supply method and device for a monitoring wireless sensor node of a roller. A node energy supply device (2) is arranged on a roller web (1). The node energy supply device (2) comprises a generator (2-1), a disc rail (2-3), an input shaft (2-4), a swing link (2-5), a swing wheel (2-8) and an energy collection module (2-10). The generator (2-1) is driven to rotate using the rotation motion of the roller, the mechanical energy is converted into electric energy by the generator (2-1), and power is supplied to a monitoring wireless sensor node by the energy collection module (2-10). After rectification, filtering and voltage stabilization are conducted on the electric energy generated by cutting a magnetic induction line when the generator (2-1) operates, the energy collection module (2-10) uses the electric energy for charging an internal battery of the monitoring wireless sensor node.

Abstract: Various systems and methods are described for generating vacuum within an engine intake. A system may comprise an intake throttle including a slidable throttle valve, where the throttle valve may comprise a hollow interior passage, which in turn may be coupled to a vacuum consumption device. When vacuum is demanded by the vacuum consumption device, the throttle valve may be displaced downstream within the throttle to decrease airflow through the throttle and vacuum may be generated at tip of the throttle valve by flowing intake air between the throttle valve and a throttle fixture.

Abstract: A damper assembly for a fuel pump includes at least one diaphragm assembly formed by joining two metal diaphragms to respective two sides of an imperforate central plate, thereby creating a pair of closely spaced diaphragms, each acting upon its own gas volume. Preferably, the diaphragm assembly has (a) a circular or polygonal central plate, (b) a first circular diaphragm having a rim portion sealingly secured as by welding to the plate and a relatively thin, flexible, convex portion projecting from one side of the plate and defining a first pressurized gas volume, and (c) a second circular diaphragm having a rim portion sealingly secured as by welding to the plate and a relatively thin, flexible, convex portion projecting from the other side of the plate and defining an independent second pressurized gas volume. The diaphragm assembly can be supported radially inside, outside, or on the weld.

Abstract: A method for calibrating an injection quantity of an injection system, using which fuel is to be injected into at least one combustion chamber of an internal combustion engine of a device, in which data of at least one zero point quantity calibration, which is carried out in an idling operation of the mechanical device, and data of at least one zero point quantity calibration, which is carried out in an overrun condition of the device, are combined.

Abstract: A bearing sleeve for a holder, which is used for fastening a fuel distributor on an add-on structure, includes a first sleeve part and a second sleeve part. The first sleeve part has a rigid sleeve body and a damping element which is integrally connected to the sleeve body of the first sleeve part. The second sleeve part has a rigid sleeve body and a damping element which is integrally connected to the sleeve body of the second sleeve part.

Abstract: A fuel distributor, which is used in particular for fuel injection systems of mixture-compressing spark ignition internal combustion engines, includes a tubular base body, a first holder and a second holder. The first holder is connected here to the tubular base body at a first fastening point of the tubular base body. The second holder is also connected to the tubular base body at a second fastening point of the tubular base body. The tubular base body has at least one bend at least between the first fastening point and the second fastening point. A base body having a meandering pattern may be implemented in this way, enabling adjustment of thermal changes in the length of a cylinder head on which the fuel distributor is mounted.

Abstract: The disclosure provides a system and method for detecting inhomogeneous fueling between fuel injectors in an internal combustion engine without resorting to a measurement of the amount of fuel delivered by each fuel injector, permitting rapid and effective adjustment of fueling by any fuel injector deviating from the homogeneity of other fuel injectors in the engine. The benefit of modifying fueling in this manner is that fueling by each fuel injector 38 is balanced independent of actual measurements of fuel delivery, simplifying the process of correcting cylinder-to-cylinder fueling imbalances. The described system and method require no intrusion into a fueling system of the engine and uses currently existing components.

Abstract: A fuel quill passageway assembly for an engine is disclosed. The engine includes a head pot; a cylinder head having an outer wall situated adjacent to the head pot, an inner wall, and a water jacket situated between the outer wall and the inner wall; and a fuel injector situated adjacent to the inner wall. The assembly may include a first sleeve extending through an aperture in the head pot toward an aperture in the outer wall of the cylinder head. The assembly may also include a second sleeve extending from the aperture in the outer wall of the cylinder head, through the water jacket, to an aperture in the inner wall of the cylinder head. Additionally, the assembly may include a seal joining the second sleeve to the first sleeve.

Abstract: A pump unit for an injection apparatus of the Common Rail type comprising a pump body housing at least one pumping element adapted to be rotatably fed to send pressurized fuel towards a feeding storage volume of the injectors, belonging to the pump itself.

Abstract: A fuel injector for use with LPG or other volatile fuels has fuel inlets through a cylindrical wall of a valve group tube assembly. Fuel venting is along a longitudinal axis of the fuel injector to an end opposite the injection end. An O-ring retaining cup is welded to the tube assembly above and below the fuel inlets to seal these members and to maintain alignment of holes in the cup with the fuel inlets.

Abstract: A fuel injector for use with LPG or other volatile fuels has fuel inlets through a cylindrical wall of a valve group tube assembly. Fuel venting is along a longitudinal axis of the fuel injector to an end opposite the injection end. An O-ring retaining cup is welded to the tube assembly above and below the fuel inlets to seal these members and to maintain alignment of holes in the cup with the fuel inlets.

Abstract: The present invention provides a fuel control apparatus with a modular fuel pressure modifying mechanism (i.e., a fuel metering section) and modular fuel regulator mechanism (i.e., a fuel regulator section) that can each be calibrated independently of each other, and independent from the modular air passage mechanism (i.e., an airflow section). The modular fuel pressure modifying mechanism is constructed and arranged to be calibrated prior to being mounted to the air passage mechanism. The fuel regulator mechanism is constructed and arranged to communicate with the airflow in the air passage mechanism and the modular fuel pressure modifying mechanism to regulate an amount of fuel delivered to the engine. The modular fuel pressure modifying mechanism and the modular fuel regulator mechanism are removably mountable to the modular air passage mechanism independently from each other.

Abstract: A vehicle fuel system has an integrated fuel rail and fuel pump that supplies high pressure fuel directly to the injectors mounted on the engine. The pump is a double acting single piston pump that has two pumping chambers formed co-axially in a single cavity. One pumping chamber is twice the size of the other pumping chamber thereby producing an output flow equal to one half the volume of the larger pumping chamber during each stroke. The smaller pumping chamber communicates with a co-axial fuel rail portion of the cavity. A plurality of outlet ports, one for each injector, are disposed in fluid communication with the fuel rail portion of the cavity.

Abstract: A fuel injection system for injecting gasoline or other fuel directly into the combustion chambers of an internal combustion engine including a fuel pump with a plurality of fuel pumping pistons mounted within cylinders formed in a fixed barrel member. Each of the pistons internally contains an improved inlet valving assembly mounted wholly within a bore axially extending in the piston. The valving assembly provides a one-way fluid inletting to the pumping chamber by slight movement of a low mass valving member away from an annular seating surface formed about an inlet passage. Unlike rotary sliding type valves, the subject valve does not move rapidly through and agitate fuel and thereby does not generate any significant degree of undesirable fuel heating thus preventing undesirable fuel vaporization which is detrimental to pumping action of fluid.

Abstract: A fluid-mechanical variable Venturi metering system having a contoured moveable element in an intake casing to an internal combustion engine whose shape and Venturi air passage(s) results in automatic shifting of the moveable element by aerodynamic force as a function of the mass-volume of the air passing through which with levers produces amplified outputs of displacement, countervailing force and differential air velocity pressure (Venturi vacuum) proportional thereto and compensating for temperature, moisture content and pressure whereby an output or combination of outputs or transducing of outputs applied to fuel control devices and systems provides air-fuel mixtures in optimum ratio for the entire speed-load range of the modern engine for naturally aspirated and supercharged Fuel Injection and Carbureted Injection systems.

Abstract: A fuel delivery system for internal combustion engines that includes a source of fuel under pressure, fuel lines for feeding fuel to the individual cylinders of the engine, and a distributor for metering fuel under pressure from the source to the individual fuel lines. The fuel metering distributor includes a fuel cavity coupled to the fuel source for receiving fuel under pressure, apertures in the sidewall of the cavity coupled to associated individual fuel lines, and a piston slidably disposed in the cavity for opening the individual apertures to the cavity as a function of position of the piston within the cavity. A linear electromagnetic actuator is coupled to the piston for controlling position of the piston within the cavity as a function of engine operating conditions.

Abstract: To improve combustion efficiency of gasoline engines having fuel injection responsive to, among other inputs, an exhaust sensor, fuel is introduced into the intake manifold in a constant stream. The fuel is taken from a return line returning excess fuel from the fuel injection system back to the fuel tank. This fuel is fed into a vacuum conduit in communication with the intake manifold, the vacuum conduit preferably being a fuel cannister purge line, or a positive crankcase ventilation line. Fuel vaporizes due to being subjected to high vacuum over a long path of travel. As the proportion of fuel introduced into the engine as a vapor increases, and reliance upon fuel which is merely atomized by the fuel injection system decreases, combustion efficiency is improved.

Abstract: A lubricant pump for supplying lubricant to an internal combustion engine, the pump comprising a housing defining a pump chamber, an inlet which is adapted to communicate with a source of lubricant and which communicates with the pump chamber, and an outlet which is adapted to communicate with the internal combustion engine and which communicates with the pump chamber, the housing also at least partially defining a fluid chamber, a source of fluid under pressure, a solenoid for selectively and alternatively affording and preventing communication of the fluid chamber with the fluid source, and a pumping member for drawing lubricant into the pump chamber in response to communication of the fluid chamber with the fluid source and for forcing lubricant out of the pump chamber in the absence of communication between the fluid chamber and the fluid source.

Abstract: A fuel regulator for controlling one or more carburetors and having a return to the fuel tank arrangement. The invention comprises a unique arrangement of an hourglass shaped plunger that permits virtually unrestircted flow through the body of the regulator from the inlet to the one or more ports which lead to the single or multiple carburetors. A method of operation wherein the return fuel flow is never completely shut off is provided during normal operation. This provides the advantages of reduced demands on the manufacture of the return line seat, and always permits at least some flow through the return line during the normal operation. Thus, a highly efficient, high volume, low pressure regulator for carburetted, high performance engines is provided.

Abstract: A fuel supply system for injection carburetors includes an orifice, a constant flow rate control device, and a fuel supply source and is provided with a first fuel channel circulating fuel of a predetermined flow rate, a second fuel channel branching off from the first fuel channel between the orifice and the constant flow rate control device for injecting the fuel into a suction tube of the carburetor, an air flow rate detecting device capable of detecting a flow rate of air flowing through the suction tube, and a fuel ejection control device capable of metering the flow rate of fuel to be ejected so that a pressure difference with atmospheric pressure which is detected by the air flow rate detecting device is balanced with a fuel pressure difference between the upstream side and the downstream side of the orifice.

Abstract: An engine control system comprises a fuel injection valve, a plate disposed in an air intake passage so as to move according to the intake air flow rate, a fuel distributor including the above-mentioned plate and mechanically controlling fuel flow rate to the fuel injection valve on the basis of the movement of the plate, and an actuator connected to the fuel distributor for increasing or decreasing fuel flow rate to the fuel injection valve, and is characterized in that the engine control system comprises acceleration fuel increment means for incrementing fuel flow rate, to the fuel injection valve from the fuel distributor, necessary to accelerate the engine after detection of acceleration through a control of the actuator.

Abstract: A system with which a correction of the fuel composition upon a change in the state of load of an internal combustion engine with which a mixture-forming device (4, 6, 8, 9, 11) is associated is constructed in structurally simple manner. The mixture-forming device has a feed unit (6) for the fuel with an inlet-side fuel conveyor line (5) and a discharge-side fuel conveyor line (7) and a movably mounted feed member (18). Depending on the position of the feed member (18), the feed member (18) provides variable fuel passage cross-sections in the feed unit (6). The feed unit is connected via an opening (31) which is closed in sealing fashion by a movable equalization element (33), the equalization space (32) being connected via a branch line (34) to the discharge-side fuel conveyor line.

Abstract: A fuel supply system for injection carburetors includes an orifice, a constant flow rate control device, and a fuel supply source and is provided with a first fuel channel circulating fuel of a predetermined flow rate, a second fuel channel branching off from the first fuel channel between the orifice and the constant flow rate control device for injecting the fuel into a suction tube of the carburetor, an air flow rate detecting device capable of detecting a flow rate of air flowing through the suction tube, and a fuel ejection control device capable of metering the flow rate of fuel to be ejected so that a pressure difference with atmospheric pressure which is detected by the air flow rate detecting device is balanced with a fuel pressure difference between the upstream side and the downstream side of the orifice.

Abstract: This invention relates to apparatus for metering the supply of natural gas to an internal combustion engine having an air intake manifold and throttle valve mounted therein comprising: a pressure regulator for regulating the pressure of said natural gas; a sensor plate associated with said air intake manifold and moveable in response to variations in said throttle; and a valve being actuable by said moveable sensor plate to vary the supply of natural gas to said air intake manifold in response to variations in said throttle valve so as to meter the supply of natural gas to said internal combustion engine.

Abstract: The fuel injection device for injection carburetors comprises a slow fuel control unit consisting of an air pressure regulator and a fuel pressure regulator, and a main fuel control unit consisting of another air pressure regulator and another fuel pressure regulator. The slow fuel control unit and the main fuel control unit have a common fuel feeding passage, and the former fuel control unit is arranged at a location downstream the latter fuel control unit. This feel injection device has a broad control range and high control accuracy, is manufacturable at a low cost and is capable of maintaining initial performance thereof for a long term.

Abstract: The fuel injection device for injection carburetors is provided with a single fuel control unit for injecting a fuel into a suction tube in quantities corresponding to flow rates of air to be drawn into the suction tube, a slow negative pressure passage communicating with a depression chamber of the fuel control unit, a diaphragm valve for opening a main negative pressure passage to communicate the depression chamber with the main negative pressure passage when the air suction rate exceeds a predetermined value, and another diaphragm valve operable to close a slow jet and open a main jet when the air suction rate exceeds the predetermined value. This fuel injection device is simple in the structure thereof, manufacturable at a low cost and has high fuel control accuracy.

Abstract: The base of a fuel injector has a plurality of radially opening recesses that receive the ends of injection tubes, the end of each tube is flared and surrounded by an O-ring that seals the tube in its recess, each tube is surrounded by a sleeve that supports the tube in its recess, and a retainer clip is secured over the injector base and has spring fingers that embrace the tubes and bias the sleeves to retain the ends of the tubes in their recesses.

Abstract: A fuel injection system for a spark-ignition internal combustion engine in which combustion air is fed through an air flow meter to produce an input force whose strength is proportional to the mass-volume of the air. This input force actuates the valve member of a valve mechanism to whose input is supplied fuel at constant pressure, the valve member being displaced to an extent determined by the strength of the input force. The valve mechanism includes a fuel output chamber in which the pressure of fuel therein is a function of valve member displacement, this pressure being applied as a countervailing force to the valve member to cause it to assume a null-balance position at which the resultant mean fuel pressure yielded by the output chamber is proportional to the mass-volume of the combustion air, thereby attaining optimum fuel-air ratio conditions throughout a broad operating range.

Abstract: A tamper-proof dual spring controlled air fuel control for a compression ignition type internal combustion engine is provided wherein fuel is supplied to the engine cylinders in response to the pressure of the air in the intake manifold. A pair of oppositely biased springs controls the movement of a stem valve in response to intake manifold air pressure exerted on a flexible diaphragm located between the oppositely biased springs. The stem valve includes a plunger within a barrel in the air fuel control housing in the engine fuel pump. The cross-sectional profiles of the plunger and barrel are designed to meter precisely a controlled amount of fuel to the engine fuel supply system as the intake air pressure increases and to reduce this metered flow as the intake air pressure decreases. Two plunger and barrel assembly embodiments having different profiles are provided. A class fit between the barrel and plunger of the present air fuel control wherein the clearance must not exceed 0.000075 to 0.

Abstract: A fuel injection fuel supply system for a combustion engine has a fuel injector valve effective for metering and injecting all of the required fuel to the engine induction system; in one version a single valve functions to supply the required fuel in equal amounts to each of the combustion cylinders of the engine through chamber means exposed to superatmospheric air; an electromagnetic assembly having a magnetic open loop is used for cyclically opening and closing the injector valve.

Abstract: A pressure regulating valve is proposed which serves to regulate a constant pressure of a medium. The pressure regulating valve includes a valve housing and a regulating piston, which is supported in a slide bore such that it is displaceable by the pressure of the medium counter to the force of a regulating spring. The regulating piston includes a valve closing element that cooperates with a valve seat and a regulating face that upon a displacement movement of the regulating piston that is longer than a predetermined displacement path (s) opens an outflow opening in the valve housing. A bypass conduit is provided in the regulating piston, beginning at one end at the regulating face and terminating at the other in a relief opening disposed in a circumferential wall of the regulating piston.

Abstract: A method and a device for supplying fuel and air to an internal combustion engine 1, in the case of which fuel is supplied to at least one injection valve 2 and combustion air is supplied to at least one intake pipe 3 provided with a throttle 4. For the purpose of achieving a simple and reliable mode of operation and for the purpose of guaranteeing a reliable supply of fuel and air to the internal combustion engine 1 under all operating conditions, the intake pipe 3 has coercively supplied thereto a predetermined amount of air corresponding to the respective position of the throttle 4 and, simulatenously, the injection valve 2 has coercively supplied thereto an amount of fuel in a fixed predetermined ratio to the amount of air.

Abstract: A fuel injection system is proposed which serves to adapt the fuel-air mixture as precisely as possible to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned a regulating valve whose movable valve element can be exposed on one side to the fuel pressure downstream of the respective metering valve and on the other side to a control pressure line defined on one end by a control pressure valve of the nozzle/impact plate type and on the other end by a control throttle. The control pressure valve has a permanent magnet and an electromagnet, the magnetic fluxes of which are guided via an armature in such a manner that in at least one air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in the same direction, while in at least one other air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in opposite directions.

Abstract: In the representative system for continuous fuel injection described in the specification, an air pump withdraws air from the air intake line of a gasoline engine and a fuel pump delivers fuel from a fuel tank through a fuel pressure regulator to a metering device which supplies fuel as a function of the operating state of the internal combustion engine, the air withdrawn from the intake line being mixed with the fuel from the metering device. The fuel pressure regulator returns excess fuel to the fuel tank through a return line and, in order provide fast response to sudden load changes, a valve device, which can be adjusted as a function of the variations in the rate of application of the load on the internal combustion engine, is provided in the return line. The valve device is controlled according to changes in the vacuum in the intake line downstream from a butterfly valve.

Abstract: A fuel injection system is proposed which serves to supply fuel to an internal combustion engine. The fuel injection system includes a metering and quantity distributing valve connected with regulating valves, which can be acted upon by the fuel pressure in a differential pressure control line. Communicating with a fuel supply line are a pressure limiting valve and a switch member, the latter having a switch diaphragm which is displaceable into a return flow chamber by the fuel pressure counter to a switch spring and a closing spring. Upon this displacement, via a tappet, a spring plate resting on the switch diaphragm opens a sealing valve, which rests at the mouth of an outflow line, which via a control throttle leads to the differential pressure control line. The pressure limiting valve is located upstream of the sealing valve. The return flow chamber is arranged to communicate with the fuel container via a return flow line.

Abstract: A fuel injection system for internal combustion engines which has a metering valve disposed in a fuel supply line, in which adjusting characteristics for controlling the metering valve are strictly linear, thereby enabling a predictable, flexible fuel metering using simple and inexpensive control circuits. To this end, metering slits in the metering valve, which cooperate with a control piston in a known manner, are each connected to a respective differential pressure valve, which is adjusted such that the pressure differential (p.sub.1,2) before and after the metering slits is constant, regardless of the size of the uncovered cross section of the metering slits. Thus the cross section of the metering slits uncovered at a given time is linearly dependent solely on the displacement travel (h) of the control piston, which in turn is proportional to a control pressure (p.sub.

Abstract: A fuel injection valve which serves to inject fuel in an internal combustion engine. The fuel injection valve includes a nozzle holder in which a nozzle body having an injection port is disposed. The injection port is opened by a closing body movable counter to the force of a closing spring in order to eject fuel. A gas guidance sheath encompasses the nozzle holder with a cylindrical portion and the nozzle body with a bottom portion and has at least one axially extending gas guidance conduit communicating with an air source. The gas guidance conduit leads to a gas ring conduit in the bottom portion. The nozzle step protrudes through the bottom portion and with the passageway opening thereof forms a throttling gas ring gap immediately above the injection port, so that fuel emerging from the injection port can immediately be enveloped by gas, such as air or exhaust gas, and thereby prepared.

Abstract: A fuel injection system is proposed which serves to adapt the fuel-air mixture as precisely as possible to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned a regulating valve whose movable valve element can be exposed on one side to the fuel pressure downstream of the respective metering valve and on the other side to a control pressure line defined on one end by a control pressure valve of the nozzle/impact plate type and on the other end by a control throttle. The control pressure valve has a permanent magnet and an electromagnet, the magnetic fluxes of which are guided via an armature in such a manner that in at least one air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in the same direction, while in at least one other air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in opposite directions.

Abstract: An intake passage for an internal combustion engine is provided on the downstream side of a throttle valve with a fuel injection nozzle connected through a fuel passage to a fuel pump and is additionally provided on the upstream side thereof with an air metering valve arranged to be turned towards its opening side according to increase in an intake negative pressure, and the fuel passage is provided with a fuel metering valve interposed therein. The fuel metering valve is formed into a slidable type spool valve, a valve body thereof is disposed in parallel with a valve body of the air metering valve and a lever is swingably supported at its middle portion and is in engagement at its one end with a cam mounted on a turning shaft of the air metering valve and is in engagement at its other end with a valve rod projecting from one end portion of the fuel metering valve.

Abstract: In an air quantity measuring device for a continuously operating fuel injection system, the baffle plate which actuates the control piston of the fuel quantity distributor by way of a lever, is provided with a raised portion on the inflow side thereof; to reduce the air-resistance of the baffle plate in a predeterminable manner, the peak of the raised portion is disposed eccentrically to the baffle plate in the lever-side half thereof, whereby the same air quantity measuring devices can be used for different measuring ranges by installing baffle plates with differently shaped raised portions.

Abstract: An apparatus for the air-injection of liquid gas into the intake tube of an internal combustion engine. The apparatus includes a vaporizer pressure regulating valve, downstream of which a metering valve having a metering piston is disposed, which being movable in a guide bore opens a metering opening to a greater or lesser extent. The adjustment of the metering piston is effected in accordance with the quantity of air aspirated by the engine as determined by an air flow rate meter, as a result of which a quantity of liquid gas corresponding to the aspirated air quantity can be metered.

Abstract: A method for supplying an internal combustion engine with liquefied petroleum gas (LPG) and a fuel supply system for the supplying the LPG into the intake manifold of an internal combustion engine are proposed. The fuel supply system includes a pump, which pumps LPG from an LPG tank at a predetermined pressure above its vapor pressure into a supply line, which leads via a heat exchanger to a metering valve. The metering valve has a metering piston, which is axially displaceable in a guide bore by means of an air flow rate meter and thereby opens a metering opening to a greater or lesser extent. Downstream of the metering valve, the metered LPG quantity flows via a regulating valve and through the heat exchanger, in which it at least partially evaporates and cools the LPG flowing to the metering valve. The supply of the metered LPG may be effected via a nozzle into the intake manifold upstream of a throttle valve.

Abstract: A method for supplying an internal combustion engine with liquefied petroleum gas (LPG) and an apparatus for blowing LPG into the intake manifold of the engine. The apparatus includes an evaporator-pressure regulating valve, downstream of which a metering valve having a metering piston is provided. The metering piston is movable in a guide bore and opens a metering opening to a greater or lesser extent. The adjustment of the metering piston is effected in accordance with the quantity of air aspirated by the engine by means of an air flow rate meter, as a result of which a quantity of LPG corresponding to the aspirated air quantity can be metered. The pressure at the evaporator-pressure regulating valve is variable via a control pressure line by means of a pneumatic control medium via a pressure control valve in such a manner that it is possible to regulate a mixture adapted to operating parameters of the engine.

Abstract: A fuel injection system for a multi-cylinder aircraft engine in which, in order to secure the fuel supply, a pressure-measuring device is connected to the feed line leading from the fuel tank to the fuel quantity distributor, into which are installed two parallel fuel pumps and a fuel filter; this pressure-measuring device in case of a predetermined pressure drop switches on the fuel pump which previously was not in operation; in case of an excessive pressure difference at the fuel filter which is measured by pressure-measuring device upstream and downstream of the filter, an electromagnetic valve installed into a bypass line to the fuel filter is opened; the soiling degree of the fuel filter is indicated by a hydraulically actuated difference pressure-measuring device with pressure limitation.

Abstract: A pivotal air door or velocity blade provides a carburetor and injection action which transitionally changes back and forth in accordance with the door's angular position. The angular position of the air door or velocity blade is controlled by the movement of an upper rocker arm relative to a lower rocker arm. A cam unit acts on a contoured follower surface on the upper rocker arm, and the free end of the upper rocker arm acts against a contoured follower surface on the lower rocker arm, the lower rocker arm in turn acting on the inlet valve of an internal combustion engine.

Abstract: A housed valve is proposed which serves in particular as a metering and distribution valve for a fuel injection system of a mixture-compressing internal combustion engine with externally supplied ignition. The valve includes a control slide with a control edge and at least two control slits. The control edge opens the control slits to a greater or lesser extent depending on the relative movement between the control slide and the control slits. A helical spring is supported on one control slide end, the end of the spring oriented toward the control slide being bent at an angle and arranged to protrude into an opening of the control slide end, while the other end of the spring is connected in a twist-free manner with the valve housing.