Control method of fuel dose by pneumatic drive of fuel casing of free fuel energy module with general external combustion chamber

FIELD: fuel combustion devices.

SUBSTANCE: control method for fuel dose by pneumatic drive of fuel injector of free piston power module with common external combustion chamber (ECC) is proposed. Compressed air for driving fuel injector is taken from compressed air supply line to ECC 1, enters air accumulator 31 and charges it. In order to set supply of required fuel dose to ECC 1, control system installs fuel dose installer 32 at corresponding set fuel dose. To supply fuel to ECC 1, control system switches the compressed air supply control valve 33 to position where compressed air from accumulator 31 enters one of cavities of fuel injector drive piston 36. Under air pressure effect, piston 36 moves towards ECC 1, is connected to plunger 37 of fuel injector and, together with it, moves to stop 38 as far as it will go. Fuel from plunger cavity 37 is fed to ECC 1. In order to prepare fuel injector for the next fuel supply cycle, control system switches compressed air supply control valve 33 to position where compressed air from pneumatic accumulator 31 enters other cavity of fuel injector drive piston 36. Piston 36 moves in the opposite direction from the ECC. Plunger 37 of fuel injector, under the action of plunger spring 43, also moves in the opposite direction from ECC. At the same time, fuel from fuel tank is absorbed through check valve 44 into cavity of fuel injector plunger.

EFFECT: control method for fuel dose by pneumatic drive of fuel injector of free piston power module with common external combustion chamber (ECC) is proposed.

1 cl, 3 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: sprayer of fuel injector for internal combustion engines (ICE) includes housing (2) and spraying needle (3). Annular cavity (5) is formed in the housing. Spraying needle (3) is located in cavity (5) in movable manner in longitudinal direction. Sealing surface (11) of spraying needle (3) interacts with seat (7). Spraying needle (3) opens or closes the fuel flow passage through a gap between itself and wall of annular cavity (5) at least to one spraying hole (8). Slot-type throttle (15) is formed between spraying needle (3) and wall of annular cavity (5). Slot-type throttle (15) has sharp edge. Slot-type throttle (15) can be formed between collar (17) on spraying needle (3) and wall of annular cavity (5).

EFFECT: ensuring the throttling action that does not depend on fuel temperature.

9 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, namely, to equipment for creating water curtains and fire fighting. Proposed nozzle comprises case with perforations for feeding water and air, and spraying needle. Bush is arranged in said casing provided with fluid and air feed radial holes. Said bush is provided with fluid feed radial holes and air feed grooves. Plunger with needle is arranged inside said bush. Plunger is arranged to displace radially. All elements of said nozzle are made from rustproof materials.

EFFECT: simplified design, higher reliability, lower production costs.

1 dwg

Fuel injector // 2411392

FIELD: engines and pumps.

SUBSTANCE: fuel injector includes valve body in which there is the main fuel inlet cavity and injection hole; and needle installed in a movable way in valve body and having on its front end the shutoff part, as a result of movement of which the shutoff part either diverts from inner surface of the valve body, or contacts with it, thus opening or shutting off the fuel flow from the main cavity to injection hole. The latter is covered with material with lower oxygen adsorption and low reaction capability for interaction with oxygen in comparison with material of the valve body itself; and shutoff part of the needle is equipped with the coating made from material with higher capability of pushing off the liquid in comparison with material of the needle itself and not forming metal surface. Gold is coating material of injection hole, and material on the basis of silicon dioxide is coating material of shutoff part.

EFFECT: fuel injector prevents formation of deposits and improves reliability owing to simple configuration.

3 dwg

Ice atomiser burner // 2405964

FIELD: engines and pumps.

SUBSTANCE: proposed atomiser burner injects fuel into diesel engine combustion chamber influencing both fuel-air mix formation and mix combustion, engine power output, exhaust gas composition and noise level. It incorporates casing with fuel feed channels, outlet nozzle orifices, fuel accumulation chamber and guide orifice accommodating reciprocating needle stop valve. Note here that the casing and needle stop valve have key joint arranged on the intake side and comprising groove and guide key that can prevent angular displacement of needle valve relative to the casing.

EFFECT: preventing needle turning during fuel injection.

6 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention refers to engine building industry, namely to isolating valve of pneumatic drive of fuel atomiser of internal combustion engine. Pneumatic drive of fuel atomiser includes piston of drive of fuel atomiser, which is connected to fuel atomiser, slide valve, pneumatic accumulator, isolating valve and electronic control system of pneumatic drive of fuel atomiser, and serves for fuel supply to combustion chamber of engine. For that purpose, control system tracks the current position of engine piston, and at the moment when it is necessary to supply fuel to combustion chamber, it sets the slide valve to the position providing the supply of operating medium from pneumatic accumulator to cavity of drive piston of fuel atomiser, in which the working medium expands and moves the drive piston of fuel atomiser and plunger of fuel atomiser, which is connected to it, and as a result, fuel is supplied to combustion chamber. Charging of pneumatic accumulator with working medium from combustion chamber is performed both in air compression stroke in combustion chamber, and in expansion stroke of combustion products. The proposed invention differs by the fact that cavity of drive piston of shutoff valve of isolating valve is connected via pipeline to combustion chamber. When pressure of working medium in pneumatic accumulator is above optimum level, working medium is supplied from combustion chamber to cavity of drive piston of shutoff valve of isolating valve and moves the drive piston of shutoff valve and the shutoff valve connected to it to closed position, thus forbidding the supply of working medium to pneumatic accumulator.

EFFECT: providing optimum charging level of pneumatic accumulator.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention is related to propulsion engineering, in particular to fuel equipment of internal combustion engine. Nozzle for heating device, in particular for application in railless transport means with motor drive comprises nozzle orifice for fuel supply and spray, which has nozzle needle for fuel supply to nozzle and area of air supply for combustion to nozzle, and start-up zone, in which fuel is ignited for nozzle start-up. Due to selection of internal diametre of nozzle needle speed of fuel exit is set so that during start-up phase of nozzle, fuel reaches start-up zone mostly in unsprayed condition, at that start-up zone is arranged in the form of start-up chamber, to which igniting element is supplied.

EFFECT: invention makes it possible to arrange for start-up behavior that is reliable, is not accompanied by considerable exhaust of smoke, accordingly, in different positions of plant.

13 cl, 3 dwg

Diesel injector // 2334119

FIELD: engines and pumps.

SUBSTANCE: diesel injector comprises a casing with a fuel feed channel, the atomiser casing housing a shut-off needle, a pressure rod linked, on one side, to the shut-off needle and, on the other side, to a shut-off spring, a spacer arranged between the injector and atomiser casings, a shaped nut, a fuel injection-start-pressure adjustment washers and a tight fuel chamber accommodating the said shut-off spring, pressure rod and the fuel injection-start-pressure adjustment washers. The invention novelty consists in using the check valve arranged in the injector casing to communicate the nozzle tight fuel chamber with the fuel feed high-pressure line and to protect the injector from hydraulic shutting off in emergency, the said valve being adjusted to the opening pressure of 4...5 MPa.

EFFECT: ruling out hydraulic shutting off of the no-drainage nozzle, higher reliability, longer life and simple adjustment in operation.

1 dwg

FIELD: mechanical engineering; internal combustion engines; diesel engines.

SUBSTANCE: proposed nozzle for injection of fuel at no-drain fuel feed with built-in diagnosing devices has body, spring, pusher, spacer, nozzle spray tip with shutoff needle, ball-type valve installed in spacer. Ring groove is made on surface of spacer adjoining spray tip. Said groove connects channel delivering fuel to spray tip with space of nozzle body through ball-type valve. Magnetically-controlled sealed-contact reed relay is installed additionally in spacer and permanent magnet which is essentially ball of valve. Sealed-contact reed relay is included into electric circuit together with dc current source and pilot lamp. Diaphragm with glued on strain-gauge transducer is installed in fuel feed channel of nozzle. Transducer is connected by electric circuit with dc current source, signal amplifier and oscillograph.

EFFECT: possibility of diagnosing combined operation of high-pressure fuel pump and nozzle, checking serviceability of ball-type valve on operating diesel engine under different operating conditions.

2 dwg

The invention relates to engine, in particular to a device of the fuel injection

The invention relates to engine, in particular to a device of the fuel injection

FIELD: engines and pumps.

SUBSTANCE: invention can be used in fuel delivery systems of internal combustion engines. The high pressure fuel delivery system is offered which contains a high pressure fuel pump (5) with an inlet port (6), at least one plunger (9) and a suction channel (8) passing between the inlet port (6) and the plunger (9), and also a fuel return port (4) and a vapour discharge valve (15) installed on the suction channel (8) of the high pressure fuel pump (5) with a possibility of connection with this channel. Between the inlet port (6) and the fuel return port (4) the switching valve (11) is installed, and the vapour discharge valve (15) is installed between the suction channel (8) and the fuel return port (4) with a possibility of their connection.

EFFECT: decrease of impact of fuel vapours at operation of the high pressure fuel pump due to fuel vapour discharge from the pump.

13 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises fuel feed channels (2), accumulating chambers (7 and 8), pistons (9) and springs (10). Accumulating chambers (7 and 8) with pistons (9) and springs (10) are arranged in separate housing (3) for engine two cylinders. Fuel is forced via fuel lines (2) from high-pressure fuel pump into first accumulating chamber (7) and, via control channels (6), to slide valve (12). The latter opens to let fuel from second accumulating chamber (8) flow via fuel feed channels (4) to appropriate fuel injectors. Besides, operation of accumulating chambers allows ordered operation of engine cylinders.

EFFECT: higher efficiency of fuel feed, simplified system and reduction of costs.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention is related to design and operation of internal combustion engine. Nozzle for pump and pneumatic spraying of fuel comprises cylindrical shell open at the top and bottom and arranged with circular ledge, press flange arranged as a whole with shell, body cover, cone valve with groove in upper part, valve seat with ledge, rod with hole for the whole length of rod, fixators-limiters of vertical shifts, hollow nozzle piston, having free space inside, nozzle cylinder, spraying disks with holes, which produce perforated labyrinth, nut of disks fixation, nozzles for compressed air and fuel inlet, electrically driven valves of compressed air and fuel control and supply, oval ledge on piston head, axial compressor, compressed air receiver, fuel tank. Nozzle drive is executed by means of electrically driven valves action at its piston for valve opening and closing and at fuel for its spraying by compressed air or overpressure of the fuel itself without compressed air, valve is connected with the help of thread to rod and is inserted top down into body till ledge stop at seat and in body. Fixators-limiters that limit value of vertical shifts in opening and closing of valve enter groove of valve and are screwed into threaded holes in valve seat. Size of fixators that protrude into groove is less than width of groove on valve. Limiter of piston stroke is inserted into body. Lower support part of body is installed with the possibility of free traveling inside nozzle body and is arranged with larger diametre compared to other part of piston stroke limiter, spring is installed on it, which rests on lower support part of piston stroke limiter by lower end, and touches lower plane of nozzle piston by upper end. Nozzle cylinder is inserted into body, rests on piston stroke limiter and is pressed by body cover. Pressing force of cover acts through cylinder to limiter of piston stroke and at valve seat. Piston space hosts spraying disks with holes, one of which has its whole area as perforated, the second disk has holes only in the centre, and the first on top has holes along periphery. Thread is cut in upper part of piston, and nut that presses disks is screwed into this thread. There are two threaded holes in cylinder cover, and compressed air nozzle is screwed in one of them, and fuel inlet nozzle is screwed into the other one. Holes with thread and holes in nozzles represent fuel supply and air supply channels. Electrically driven valve for control and supply of fuel is installed on pipeline for fuel supply, directly near nozzle for fuel supply. Electrically driven valve for supply and control of compressed air is installed on air duct.

EFFECT: invention makes it possible to burn all grades of liquid fuel, light and heavy, with addition of coal dust and liquefied gas and to achieve cycle of Beau-de-Rochas, which is optimal in thermodynamic respect.

1 dwg

Pump-jet // 2374482

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production. Proposed device comprises housing, control and pressure chambers arranged coaxially therein to accommodate pressure booster with piston and plunger, fuel feed line with cut-off valve communicated with accumulator hydraulic line, drain line, electromagnetic valve, and sprayer with needle with needle chamber communicated, via connecting channel, with pressure chamber. In compliance with this invention, pump-jet comprises additional fuel flow distributor representing three intermediate spacers with channels arranged ahead of pressure booster. Medium space accommodates booster of sprayer needle hydraulic locking. Upper spacer houses spring-loaded filler valve, while lower spacer accommodates sprayer above-needle chamber making sub piston chamber of hydraulic locking booster.

EFFECT: higher efficiency of fuel feed.

4 cl, 2 dwg

Pump-jet // 2350773

FIELD: engines and pumps.

SUBSTANCE: pump-jet comprises housing, control and pressure chambers coaxially arranged there inside and accommodating pressure booster with piston and plunger, fuel feed line with fill valve communicating with accumulator hydraulic line, line to discharge fuel from the said control chamber, control solenoid valve, sprayer with needle furnished with super-needle space communicating with the pressure chamber. The proposed jet pump comprises hydraulic locking booster mounted aligned with the sprayer with needle, booster super-piston chamber communicating directly, via fuel channel, with the accumulator hydraulic line. The said booster sub-piston chamber, that is, the super-needle space, communicates with additional discharge channel connected with the discharge chamber downstream of the solenoid valve.

EFFECT: higher fuel injection properties and pump-jet reliability.

8 cl, 2 dwg

FIELD: engines and pumps, chemistry.

SUBSTANCE: proposed method incorporates heat preparation, homogenisation in the vortex-rotary activator field of centrifugal forces, fine filtration by means of a filter-reactor made up of poly-functional catalyst granules intended for alkylation of aromatic compounds. The catalytic activation of the fuel or the water-fuel emulsion is carried out in the aforesaid vortex-rotary activator along with feeding surfactants into the activator inlet. The invention discloses the activator design.

EFFECT: higher engine efficiency.

4 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: diesel fuel feed system comprises a high-pressure pump, its sections communicating, via a pressure valves, with high-pressure pipelines and closed-type nozzles, a fuel accumulator, fuel fine and coarse filters, a booster pump, low-pressure pipelines and a fuel tank. The fuel discharge system includes the fuel accumulator receiving fuel oozing out through the nozzle atomisers in injection. The said fuel accumulator is divided into two spaces with a throttle arranged therebetween, one space being connected to the discharge line running from the nozzles and the other one communicating, via a check valve, with the fuel tank. The check valve is adjusted at, at least, the 4...5 MPa opening pressure. The invention novelty consists in that the fuel accumulator space is connected to the fuel system low-pressure line via the check valve adjusted at the 0.03...0.05 MPa opening pressure, while the second accumulator space accommodates an air-operated accumulator furnished with a plug.

EFFECT: higher efficiency and stability, longer life.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: diesel engine fuel system incorporates a high-pressure sectional pump with a distributing device made up of a body with inlet and outlet channels, the inlet channel communicating with the fuel pump appropriate section, a slide valve arranged in the body to rotate and axially move and furnished with distributing channels allowing communication between the body inlet and outlet channels, a drive rigidly linking the slide valve with the 2-to-1 transmission ratio camshaft, a jet, a high-pressure line communicating the jet with the distributing device outlet channel, the distributing device being furnished with the discharge outlet channel and throttling outlet channel arranged at the angle of 180 degrees relative to each other. At the slide valve first position, its blind axial channel communicates, via the third distributing channel and throttling outlet channel, with a low-pressure line, and, via the second distributing channel and the discharge outlet valve, with the jet via the high-pressure line. At the slide valve second position, the said valve blind axial channel communicates, via the first distributing channel and the discharge valve, with the jet by means of the high-pressure line. The distributing channels represent radial holes. The first hole is a isoscales triangle section opening, its triangle sides mating along a smaller radius, the second and third openings being oval in section with the triangle height and the oval larger axis being equal.

EFFECT: intensified fuel feed, larger intercycle stability and uniformity of fuel feed with a higher initial pressure in discharge line in intercycle interval.

7 dwg

The invention relates to engine, in particular to toplevelpackage apparatus for internal combustion engines

The invention relates to engine, in particular to a device for the injection of fuel in internal combustion engines

FIELD: machine building.

SUBSTANCE: method involves a control system, cylinders with gas distribution valves and piston groups composed of two pistons coupled by a stem, and an external combustion chamber; according to the invention, at travelling of piston groups from one extreme point to another extreme point, the control system in each cylinder switches the gas distribution valves into opposite positions basing on the monitored instantaneous velocity of the piston group. When a piston group arrives at the extreme point, its speed is zero; and at approaching of the piston group to the extreme point the control system switches the gas distribution valves into opposite positions, supply of combustion products from the external combustion chamber to the cavity of one piston and discharge of waste combustion products from the cavity of another piston are stopped, pressure of combustion products remaining in the cavity of another piston is increased and compression of the combustion products remaining in the cavity of another piston results in slowdown and stop of the piston group in the extreme point, so impact of the piston group against the cylinder end is prevented; afterwards the control system of gas distribution valves provides for gas exchange in the power unit cylinders making the piston group move to the opposite extreme point.

EFFECT: prevention of piston group concussion against cylinder ends.

1 dwg

Up!