Method of controlling the level of charging the pneumatic accumulator of a two-motor engine with external combustion chamber

FIELD: engines.

SUBSTANCE: invention relates to two-stroke engines with an external combustion chamber. Concept of the invention consists in the fact that a two-stroke engine with an external combustion chamber includes a pneumatic accumulator, control system and a valve to release excess air into the atmosphere. To match the level of charging of the accumulator with the engine power set and the optimum excess air factor, the control system opens the valve for discharging excess air into the atmosphere at the time. When the pressure in the pneumatic accumulator reaches a level, at which the required pressure of air supplied to the external combustion chamber is ensured.

EFFECT: technical result consists in higher engine efficiency.

1 cl, 1 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention can be used in axial and piston engines. The axial and piston engine (1101) contains at least one working cylinder which is fed from continuously operating combustion chamber (1110). The combustion chamber (1110) has two air inlets intended for maintaining of the combustion process designed with a possibility of supply of air with various temperatures. The invention describes a version of axial and piston engine design.

EFFECT: acceleration of obtaining of working mix uniformity.

15 cl, 8 dwg

Adiabatic engine // 2541490

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICE with splitted thermodynamic cycle. This invention consists in that two, suction and compression, strokes are realised in one cylinder with piston while two other, working stroke and discharge, cycles are implemented in another cylinder with piston. Gas combustion and primary expansion occur in separate heat-insulated device with gas receiver for first gas expansion step to be executed for further feed into working engine. Gas pressure and temperature decrease in said receiver due to significant volume but relatively constant gas pressure is maintained under conditions of heat insulation. Working gas second expansion occurs in working engine, in cylinder with piston, whereto constant-pressure gas is fed from receiver. Gas temperature is decreased, second time, to minimum possible value and gas is ejected into atmosphere.

EFFECT: engine operation without cooling system, hence, higher engine efficiency.

7 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: axial piston engine (1) with continuous combustion includes combustion chamber (2) operating based on a two-stage combustion principle and provided with possibility of supplying the working medium leaving it to at least two working cylinders. Series supply of working medium to at least two working cylinders (30) is performed by means of at least one ignition channel (39). The latter is provided per each working cylinder (30) and has the possibility of being opened and closed by means of control piston (40). Versions of design of an axial piston engine and a control method of the axial piston engine operation are described.

EFFECT: improving use efficiency of fuel combustion energy.

53 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: working medium is compressed in multistage compressor and cooled to initial compression temperature. Then, working medium is displaced into combustion chamber for heat to be fed thereto. Now, working medium is displaced into working cylinder to expanded therein with no heat losses to transfer expansion energy to engine shaft and multistage compressor drive. Note here that amount of heat fed is controlled by equalising working medium pressure increase with magnitude εk-1, where ε working medium expansion ratio and k is expansion adiabatic curve factor. Piston engine to this end comprises multistage compressor with cooling system, heat-isolated combustion chamber separated from working cylinder, and partially heat-isolated working cylinder with working piston arranged therein.

EFFECT: higher engine efficiency.

5 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: as a working medium discrete gas flow generated using compressor and pulse combustion chamber is used. At that quantised portions of working medium, generated by means of pulse combustion chamber by set of generation microprocesses including successive formation of working mixture, combustion of working mixture upon constant volume and thermodynamic expansion of working medium, are accumulated in succession during piston full travel in cylinder of preliminary expansion.

EFFECT: increasing specific useful energy efficiency of running cycle of internal combustion engine due to partial recuperation of energy losses during compression and expansion.

3 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: in the engine the first pair of cylinders is interconnected through inlet controlled valves with air inlet path and through discharge automatic valves with bypass channel, and the second pair of cylinders is interconnected through inlet controlled valves with bypass channel and through outlet controlled valves with exhaust main line. In the near-valve area of bypass channel at each expansion cylinder there installed is injector and ignition plug, and injector is installed in the head of each expansion cylinder. According to the invention, the first pair of cylinders is also equipped with the channel connecting both cylinders and with controlled bypass valves installed at the joint of channel with each cylinder. Drive opens each of the controlled valves when pistons of the first group of cylinders are located at the following points: one at upper dead point, and the other one at lower dead point.

EFFECT: higher engine efficiency.

4 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: piston engine includes converter for conversion of energy of working medium to mechanical energy, fuel pump; at that, hydraulic pump is equipped with external combustion chamber which is located outside the converter, steam generator and compressor; at that, compressor is pneumatically connected to external combustion chamber which is connected through steam generator to converter, and fuel pump is hydraulically connected to external combustion chamber, and hydraulic pump is hydraulically connected to steam generator. External combustion chamber is arranged in steam generator, equipped with gas chamber separating combustion products from steam. At that, gas chamber has the volume which is more than twenty cyclic volumes of converter. Steam generator has the volume which is more than twenty cyclic volumes of converter. Air cooler is installed between compression steps of compressed air. Engine is equipped with external liquid cooling system which is hydraulically connected to hydraulic pump, heat insulating jacket and turbo-compressor. Turbo-compressor is pneumatically connected to converter and compressor, which are combined into one unit. Converter has oil case which is separated from compressor and equipped with outlet openings. Engine has one external combustion chamber per several converters. Supply of fuel, cooling liquid and working medium is controlled. Converter is made in the form of Kazantsev pneumatic engine, or in the form of Kazantsev adiabatic engine, or in the form of Diesel engine, or in the form of Wankel engine, or in the form of rotary engine, and in the form of Stirling engine. Compressor is piston-type or turbine-type or centrifugal.

EFFECT: invention provides improvement of engine power and efficiency, fuel economy, and the design is simplified.

25 cl, 5 dwg

Power plant // 2411388

FIELD: engines and pumps.

SUBSTANCE: power plant includes piston internal combustion engine and its power supply system, engine of external heat supply, electric generator interacting with engine of external heat supply, and cooling system of internal combustion engine and engine of external heat supply, the heat exchangers of which interact with environment. Heat accumulator interacts with internal combustion engine for utilisation of non-used heat and with engine of external heat supply for supply of heat required for its operation. Electrolysis bath receives electric energy from electric generator and supplies generated hydrogen to the power supply system of internal combustion engine. Unit is connected to the power supply system of internal combustion engine and includes monitoring sensor of toxic level of waste gases, which is installed at the gas duct outlet of heat accumulator, and temperature sensors installed in heat exchange circuits of each magnetic-heat engine.

EFFECT: reducing toxicity level of waste gases and increasing the efficiency of the engine.

4 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building, particularly to internal combustion engines. In compliance with the invention, the engine incorporates an integrated operating and compressing cylinders and a cutoff combustion chamber. The geometrical axis of peripheral compressing cylinder is shifted, relative to the operating cylinder axis, towards the combustion chamber. The engines pistons are linked to the common crankshaft to allow their asynchronous displacement, the said shaft driving a phase gas distributor arranged in the cylinder head. The said rotary phase gas distributor houses the cutoff combustion chamber, gas ducts and passageways. There is an inner piston translating inside the said cutoff combustion chamber to timely vary the compression rate till the fuel mix self-ignition. Air is fed into the engine through the one-way non-gear valve system.

EFFECT: heightened engine efficiency and improved ecological properties.

6 dwg

FIELD: engines.

SUBSTANCE: invention relates to the field of propulsion engineering. According to the invention, working medium is generated as a stationary high pressure gas flow by combustion in a fuel combustion chamber in the continuous flow of compressed air delivered by compressor. Further, energy of working medium is transferred to useful mechanical work - first, in the constant pressure cylinders, and then - in the expansion cylinders. Aerodynamic pressure of operating gas flow works in the constant pressure cylinders; further on the operating gas flow is delivered to the expansion cylinders, where it works due to thermodynamic expansion.

EFFECT: enhancing power and efficiency of internal-combustion engine at lower degree of compression or fuel consumption; reduction of maximal operating pressure; exclusion of impact change of pressure and temperature from work process.

2 cl, 16 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to diesels. At starting, this diesel runs in four-stroke cycle with compressed air heating while at changeover to two-stroke cycle compressed airflow is divided in two flows. Note here that first flow is heated by off-gas heat to fuel ignition temperature by regenerative heat exchange while second flow is heated by recuperative heat exchange. At first stroke initial phase terminates combustion chamber filling with air from first flow, combustion and expansion of gases formed by combustion. At second stroke, off-gas is ejected and purged by second airflow at rarefaction created by ejection. At second stroke end, fuel is injected outside combustion chamber; fuel-air mix is formed and ignited by second airflow. Portion of fuel and fire mix are fed into combustion chamber being actively filled with first airflow. Engine cylinder head is composed by two chambers communicated with combustion chamber. First said chamber makes a antechamber with pump-injector while second said chamber is composed by regenerator. Additionally, this device incorporates ejector connected via exhaust manifold with discharge valve, receiver and pneumatic system composed by pipeline with solenoid valves. These are connected to regenerator and heat exchanger. Besides, pipelines with solenoid valves and nozzles are connected to cylinder, exhaust valve pump-injector servo drives.

EFFECT: higher efficiency, simplified design.

2 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method comprises sucking atmospheric air via air duct in under-piston space at ICE compression stroke and shutting it off automatically at the start of working stroke. As pressure in said under-piston space is higher than that inside the piston the air is bypassed in said chamber unless the termination of working stroke. At the start of exhaust stroke, second portion of air is sucked in under-piston space. Chamber with aforesaid first air portion is automatically shut off to inject atomised fuel into said under-piston space while produced combustible mix is automatically forced via said chamber into the piston. As pressure in under-piston pace exceeds that in piston chamber the outlet therefrom is opened at the start of gas intake stroke. Both air portions at piston combustion chamber outlet and fuel evaporated therein Invention covers ICE running on said principle.

EFFECT: lower power consumption.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: thermal engine includes expansion machine with devices for implementation of thermodynamic operating cycle of engine, cooling system, preparation system of working medium components, preparation system of gas fuel composition of working medium, cooling and recovery system and device, as well as power takeoff system. Preparation system of one of the above components, and namely that containing gas mixture oxidiser, includes compressor in-series connected by means of a channel and having not less than two devices of stepped mixture compression. One of the sections of the above channel is mounted with possibility of connecting to it before and/or after the cooling device of compressor of additional channel for intermediate extraction of compressed gas mixture and supply of the latter to cooling system of expansion machine. Mixture compression device which is located at maximum distance from intake device is interconnected with preparation system of gas fuel composition of working medium in expansion machine at least through one recuperator. Each recuperator has heat exchange circuit for warming-up the above gas mixture, with possibility of control, which is interconnected with supply channel of hot exhaust gases to it, and at least one recuperator has the possibility of additional regeneration and recovery to combustion chamber of the heat utilised from cooling system of expansion machine. In operating method of thermal engine the compression of component, mainly air, is performed at least partially before the latter is supplied to combustion chamber, subject to cooling during compression process, and after compression it is subject to after-heating using the heat of combustion products - exhaust gases and heat of cooling of the enclosures of a chamber or chambers of combustion; for that purpose the engine is equipped with recovery system of the above types of leaving heat and through the latter it is connected to the compressor having the cooling system of compressed component, by means of which the above compressed component with flow separation is supplied to prechamber and immediately to working zone of combustion chamber.

EFFECT: increasing effective engine power and increasing efficiency coefficient owing to recovery introduction to the engine operation of heat of combustion products - exhaust gases, including the heat of cooling of combustion chambers of thermal engine expansion machine, which is included in the above process.

13 cl, 4 dwg

Air pump // 2351778

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production and can be used in ICE. Proposed air pump comprises a cylindrical housing mounted between the engine manifold and air cleaner, supporting ribs passing along four sides from the housing inner periphery to its center to make an integral structure, a supporting pipe with a vertical hole along the housing axis arranged on aforesaid supporting ribs and furnished with an inclined step. It also incorporates a fixed casing inserted into the said housing inner periphery. The said casing upper and lower edges have supporting ribs and fixed helical-surface vanes arranged between the said supporting ribs. Revolving shaft is fitted in the supporting pipe. The revolving housing incorporates the supporting pipe linked up with the revolving shaft. Note here that the said pipe closes the beating pipe and houses rotary vanes.

EFFECT: increased degree of flow swirling.

3 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: ICE operation method comprises injecting the fuel-air charge into combustion chamber, igniting mix and converting piston reciprocation into crankshaft rotation. On injecting and igniting the said mix, the combustion chamber is fixed by positioning the piston at TDC and the air is forced into the cylinder by external compressor. The engine design implementing the described method is also covered by this invention.

EFFECT: higher efficiency, simpler design, higher reliability and lower consumption.

8 cl, 7 dwg, 2 ex

Diesel engine // 2316658

FIELD: mechanical engineering; internal combustion piston engines.

SUBSTANCE: according to invention, proposed engine contains double-acting cylinder with cooling jacket in middle part of which discharge and scavenging ports are arranged. Piston is fitted into cylinder. Cylinder is closed by covers from top bottom. Each cover is provided with channel for nozzle. Cover closing cylinder from bottom is connected with crankcase, and it is provided with hole to pass rod connected by end with piston and by other end, through connecting rod, with crank of crankshaft. Engine has also air blower with air filter whose shaft is mechanically connected with crankshaft, high-pressure fuel pumps mechanically coupled with crankshaft and hydraulically coupled with nozzles, and fuel, cooling, lubricating and starting systems.

EFFECT: improved performance characteristics of diesel engine.

9 dwg

FIELD: armored vehicles, in particular, wheeled armored vehicles having a diesel engine.

SUBSTANCE: the wheeled vehicles has an engine clutch, gearbox and axles. A single-row medium speed two-stroke Diesel engine with a direct-flow valve-slot scavenging of exhaust into the exhaust windows and gas turbines coupled by a common shaft serves as the engine. Superchargers of the Sirocco construction operating on the two-stage supercharging principle are positioned at the ends of the shaft. The fresh air charge comes through four supercharging valves communicated with a receiver, pump-injectors with a hydraulic drive provided with a fuel injection moment regulator are used in the Diesel fuel supply equipment. The valve mechanism is also provided with a hydraulic drive. The Diesel engine is suspended by two hinge supports, one of which is positioned on a cylindrical bulge in alignment with the crankshaft nose. A yoke with two shoulders and foots for mounting an the Diesel engine underframe is fitted on the bulge, the second support is also positioned on the cylindrical bulge of the gearbox, the cylindrical part of the flywheel casing is pushed on it.

EFFECT: enhanced power of the Diesel engine and improved transmission, suspension and steering.

7 cl, 10 dwg

Motion converter // 2308603

FIELD: mechanical engineering, particularly combustion engines, pumps and positive displacement compressors, namely mechanisms, which covert reciprocal movement into rotation and vice versa.

SUBSTANCE: motion converter comprises four cylinders grouped in pairs. Pistons of opposite cylinders are connected with each other through fixed bar. The converter has the first and the second pair of fixedly connected parallel toothed racks brought into engagement with corresponding segmental gear-wheels fixedly connected to one output shaft. In each segmented gear-wheel teeth extend for less than half of 180° pitch circle. Segmented gear-wheels cooperating with corresponding toothed racks are shifted through predetermined angle, preferably 90° angle, one relatively another.

EFFECT: increased performance.

3 cl, 5 dwg, 1 tbl

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed supercharged internal combustion engine contains two working cylinders with pistons, auxiliary cylinder with piston installed between working cylinders, and crankshaft with crankpins for working and auxiliary cylinders. Working pistons are installed at one level at one revolution difference in strokes of cylinder where operating cycles of engine take place, namely, intake compression, fuel combustion and expansion. Auxiliary cylinder operates on residual pressure of exhaust gases getting from two working cylinders in turn. Engine is furnished additionally with bypass channels made in cylinder head and closed by valves from side of working and auxiliary cylinders, intake and exhaust valves of working cylinders and exhaust valve of auxiliary cylinder installed on cylinder head. Crankpin of crankshaft of auxiliary cylinders is shifted by 80° relative to crankpins of working cylinders in direction of lag. According to second design version, engine is not supercharged.

EFFECT: increased economy, power, reduced noise in operation, possibility of supercharging to increase engine power several times without reduction of efficiency.

3 cl, 1 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relate to internal combustion engines with superchargers for filling, or supercharging with piston or crankcase compression superchargers and it can be used in aircraft and automotive industry, especially for general purpose aviation. Engine is furnished additionally with fuel mixture distributor installed on crankshaft with possibility of removal and made in form of cylinder whose inner space has form of real. Rectangular ports are cut out asymmetrically on side surface of distributor. Length of said ports does not exceed half of length of circumference of cylinder base, and their width corresponds to width of bypass and scavenging channels of crankcase, forming scavenge and bypass space together with inner space of distributor.

EFFECT: increased engine power rating, reduced mass and overall dimensions.

10 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: invention can be implemented in mechanisms of gas distribution of internal combustion engines (ICE), particularly in devices for regulation of phases of gas distribution and valve stroke. The device for control over the drive of the ICE valve consists of distributing shaft (2) with cams (3), of lever-pusher (4) with movable bracket (5), of core-rod (6), of electro-magnet (7) of a valve stroke, of guide (8) of the valve drive, of control hydro-cylinder (9) and control electro-magnet (10) of regulation of valve timing. Lever-pusher (4) contains roller (11). Roller (11) is kinematically tied with cam (3). Movable bracket (5) is coupled with core (12) of control electro-magnet (10) of regulation of valve timing. Lever-pusher (4) contacts valve (13) and is connected with guide (8) of valve drive via axle (14). Axle (14) is arranged in a through slot of core-rod (6). Guide (8) of valve drive is installed in controlling hydro-cylinder (9). Core-rod (6) rests on piston (15) of controlling hydro-cylinder (9). Spring (16) is installed between guide (8) of valve drive and core rod (6).

EFFECT: optimal speed of air or fuel-air mixture at various moments of intake stroke and optimal amount of fuel intakes.

5 dwg

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