Method for engine operation

FIELD: engines and pumps.

SUBSTANCE: methods for automatic stop and start of the engine are presented. In one embodiment, the method provides supply of water-containing fluid to closed intake valve of the cylinder when the engine is automatically switched off and idling, and at the subsequent start the supply of fuel into the cylinder after the execution of at least one suction stroke and the next exhaust stroke in the cylinder is performed.

EFFECT: emissions control at automatic engine re-start.

18 cl, 5 dwg

 



 

Same patents:

FIELD: mechanical engineering; internal combustion engine.

SUBSTANCE: invention relates to moistening gas suction or delivery systems for internal combustion engine. Proposed system contains surface of hydrophilic diaphragm, reservoir for water made nondetachably with surface of hydrophonic diaphragm, and casing adapted for regulation of area of surface of hydrophilic diaphragm pointed either to water reservoir or to gas suction system. Engine contains moistening air suction or delivery system including surface of hydrophilic diaphragm, reservoir for water nondetachably connected with surface of hydrophilic diaphragm, and casing adapted for regulation of area of hydrophilic diaphragm pointed either to water reservoir, or to air suction system. Fuel element with proton exchange diaphragm contains moistening gas suction or delivery system with proton exchange diaphragm surface. Moistening gas suction or delivery system contains intake hole for air, reservoir for water, surface of hydrophilic diaphragm with no pores which separates water reservoir from intake hole, and casing adapted for regulation suction of delivery of moistening gas including air intake hole, reservoir for water, surface of hydrophilic diaphragm which has no pores and separates reservoir for water from intake hole, and casing adapted for regulation of area of surface of hydrophilic diaphragm. Motorized vehicle is powered by such engine.

EFFECT: simplified system, reduced cost of system, increased efficiency of engine.

18 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method can be used in ICE operation with addition of steam. In operation, protective coating with nanodisperse modification agent M of friction surfaces is applied on ICE surfaces in direct or indirect contact with combustion products to prevent corrosion and hydrogen brittleness promotion. For coating application, ICE is changed to idling without air wetting, heated at idling to rate temperature. Then, said modifying agent M is added to its crankcase oil, in every cylinder and to fuel to support ICE operation at idling with air wetting for at least 1-1.5 h. Said modifying agent represents minerals of serpentine group: antigorite, lizardite, chrysotile.

EFFECT: prevented corrosion and hydrogen brittleness promotion.

9 cl

FIELD: engines and pumps.

SUBSTANCE: proposed method of preparation of liquid fuel combustion in ICE combustion chamber consists in making of air-water fine emulsion by water dispersion. Microwave radiation is applied to obtained emulsion to heat the latter to water boiling point. Processed emulsion is fed into combustion chamber to apply microwave radiation thereat again to hear said emulsion to point exceeding water boiling point at combustion chamber pressure. Now, fuel is injected into combustion chamber.

EFFECT: fuel saving, higher engine efficiency, lower exhaust gas toxicity.

FIELD: engines and pumps.

SUBSTANCE: invention relates to diesel fuel feed system and can be widely used at engine production plants, haulage enterprises, etc, for feed of water-fuel emulsion into engine cylinder. Proposed unit comprises fuel feed system composed by fuel booster pump and line to feed fuel to injection system composed of high-pressure fuel pump and heated water feed system to force water to booster feed inlet, said system being composed by two serial tanks, pump, water return line to force water downstream of the pump into tank, and solenoid valve. Injection system comprises fuel pump with fuel flow rate metre arranged downstream of said tank, line to return fuel to booster pump inlet, high-pressure line, constant pressure controller and atomiser. Note that water feed system comprises extra pump delivery adjusting device, pressure transducer and calibrated nozzle downstream of the pump. Said calibrated nozzle is arranged at water return line at tank downstream of the pump. Water feed system is furnished with heat insulation. Additionally, level gage and temperature gage are fitted in said tank. Besides, this unit incorporates the governing controller. Fuel flow rate metre, pump delivery adjusting device, solenoid valve, temperature and pressure gages are connected to said controller.

EFFECT: diesel water-fuel emulsion unit operated automatically irrespective of engine operation and ambient air temperature.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry and can be used in engines with petrol injection system but most widely in diesel engines. Novelty consists in the fact that the fuel system is made as two interconnected circuits: - a diesel fuel circulation circuit consisting of a fuel tank, a fuel pump connected to a pressure line with a solenoid valve to an engine pump manifold, a return line to return diesel fuel from the manifold to the fuel tank, with a pressure-relief valve and a solenoid valve installed on the return line, a bypass line with the pressure-relief valve, and a line for diesel fuel delivery to a water-fuel emulsion production unit; - a circuit for obtaining water-fuel emulsion circulation consisting of: an inertial separator, a plunger-type fuel pump, an ejector with a suction chamber and a mixing chamber which is directly connected to the manifold of the engine pump, a return line to return fuel-water emulsion to the separator with the pressure-relief valve and the pressure switch, herewith, the separator accommodates a water level regulator connected to the water tank, a fuel level regulator connected to the fuel delivery line, and a water-fuel emulsion inlet manifold, aside from that the separator is connected to lines for water delivery to the ejector suction chamber using a calibrated dose and the solenoid valve.

EFFECT: system feature consists in the fact that it automatically changes the engine operation mode from diesel fuel to alternative fuel (water-fuel emulsion) and back to diesel fuel without stopping the engine, and the fuel system also provides preparation of highly dispersed water-fuel emulsion of guaranteed composition with low power consumption.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: device for preparation of water-fuel emulsion in fuel system of diesel locomotive engine includes feed tank for water with intake device, ejector with dispersing diffuser, active and passive nozzles connected to fuel pump of diesel locomotive engine and water intake device correspondingly. Feed tank for water is the same for water and fuel and is additionally equipped with fuel intake device. Note that water intake device is fixed at the bottom of the tank, and fuel intake device is installed in the tank with the possibility of vertical movement.

EFFECT: simplification of water-fuel emulsion preparation device in fuel system of diesel locomotive engine.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: device for preparation and storage of combustible water-soluble addition includes reserve capacity (1) and capacity of prepared working mixture (20). Capacities (1, 20) are equipped with feed pipelines (2, 21) and interconnected by means of high-concentration water solution pipeline (17). Pipeline (17) includes another filter (18), feed pump (19) and shutoff valves. Capacity (20) is interconnected by means of pipeline of prepared working mixture (28) with power plant. Aerometer (27) is installed on capacity (20). Capacity (1) is interconnected with circulation pipeline. Circulation pipeline includes two vertical pipes (10, 9) interconnected with parallel sleeves (12) through distributing (13) and collecting (14) adapters, as well as circulation pump (8) with shutoff valves. Pump (8) is installed in inlet section of circulation pipeline. Sections of inlet section (15) and outlet section (16) of circulation pipeline are located at the height of lower emergency level of fluid surface. Section (16) is made in the form of the branch pipe bent downwards. Sleeves (12) have the holes on their side surface, which are located throughout their length. Fluid surface level sensors (4, 5, 6, 7, 23, 24, 25, 26) are installed on capacities (1, 20). Fluid surface area of the reserve capacity is determined by the ratio: where F - fluid surface area of the reserve capacity, m2; D - allowable diametre of non-dissolved addition particles freely passing through the cell of the other filter (18), m; Q - total supply of circulation (8) and feed (19) pumps, m3/sec; K - coefficient, m×sec; K=18µ/Δρg. Where, µ - coefficient of dynamic viscosity of concentrated addition solution, Pa×sec; g - acceleration of gravity, m/sec2; Δρ - difference of densities of addition granules and its solution, kg/m3.

EFFECT: enlarging application field of combustible water-soluble additions, increasing efficiency, economy and fire safety of their being used on ships.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: air and fuel is supplied to cylinders. Fuel-air mixture is compressed. Combustible mixture is burnt. Steam is supplied to cylinders. As a result, combustion products and steam is expanded. Useful mechanical work is carried out during movement of pistons, waste gas and steam is discharged from cylinders and their heat is recovered by water heating and steam generation in recovery system. Steam is supplied to engine cylinders in expansion stroke (working travel). Steam introduced to engine cylinders is pre-heated, steam is introduced at the beginning of working travel at maximum pressure and temperature of gases, and waste steam-gas mixture is supplied to heat recovery system consisting of steam generator and superheater. Device for implementation of the method of internal combustion engine operation includes mechanisms for performing working processes, systems of gas distribution, fuel, air feed, waste gas outlet, heat recovery system of waste gas for generation of water vapour and is equipped with a valve or an atomiser with possibility of introduction of superheated steam to engine cylinders in expansion stroke (working travel). Heat recovery system of waste gas and steam includes steam generator, superheater and control gas valve installed before the outlet of waste gas to atmosphere.

EFFECT: increasing engine efficiency, reducing toxicity level of waste gas, improving operating reliability of heat-stressed elements.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production, namely ICE fuel feed systems. Proposed system comprises fuel tank, standard fuel system, water tank, water fuel feed line, carb, standard fuel pump, mixer and mixing chamber. Proportioned fuel and water are fed into said mixing chamber thought which water-fuel emulsion is circulated simultaneously with emulsion feed into carb float chamber.

EFFECT: higher quality of combustible mix, engine reliability and efficiency.

5 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production, particularly to ICE fuel systems elements. Proposed device comprises static initial emulsion pre-mixer, blending valve with outlet, 1st , 2nd and 3rd high-pressure cylinders with inlets and outlets and pistons. Inlet lines of the 1st and 2nd high-pressure cylinders communicate with static initial emulsion pre-mixer. Outlet lines of the 1st and 2nd high-pressure cylinders communicate with blending valve. Inlet line of the rd high pressure cylinder communicates with blending valve outlet while outlet of the 3rd high-pressure cylinder communicates with diesel engine. Proposed device includes also hydraulic drive and pressure generator having working cylinder coupled with hydraulic drive. Three pistons of high-pressure cylinders make the components of pressure generator that has working cylinder accommodating working piston moving therein.

EFFECT: serviceable device to prepare and inject diesel fuel/water emulsion.

13 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to internal combustion engines (ICE), particularly to fuel-water emulsion preparation and feed devices incorporated with ICE that are furnished with fuel injection systems. Proposed method comprises producing two flows i.e. pure fuel flow in ICE fuel system and water flow, that, when mixed, produce fuel-water mix. The latter is fed via fuel injection nozzles. Water is added directly at the injection nozzle inlet. Proposed device consists of fuel rail and water feed channel incorporated with the latter representing a static-type mixer. Water feed channel is arranged inside fuel rail and has orifices arranged opposite each nozzle.

EFFECT: improved engine operating performances without notable modifications of ICE fuel system.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine at stay after cold starting can change its combustion mode to homogeneous combustion mode or that based on fuel charge layer-by-layer distribution. Working range of combustion based on layer-by-layer fuel charge distribution at vehicle stay after cold starting is expanded relative to that of homogeneous combustion at stay after cold starting as vehicle inclination angle decreases.

EFFECT: expanded working range, negative pressure of sucked air for required brake characteristic, decreased HC content at stay after cold starting.

7 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to automotive industry. Proposed method of diesel (1) control consists in generating automatic oscillation of fuel feed device (7). On a sensor (6) signal at load decrease to magnitude smaller than 30% of rated value the fuel feed device position pickup (7) is used to feed signal from speed automatic controller (10) of control unit (13) and frequency generator via current sinusoidal oscillations of amplitude and frequency oscillator (12). Said oscillator (12) is timed by crankshaft turn angle transducer (5) with its angular position. Invention covers also the diesel control at low feed and minimum stable rpm.

EFFECT: lower minimum stable rpm at load and idling.

2 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: prior to switching on ignition gaseous fuel is injected. Then, also before switching on ignition, auxiliary fuel is additionally injected.

EFFECT: fuel savings, decreased harmful emissions.

9 cl

FIELD: engines and pumps.

SUBSTANCE: method of starting the ICE running on fuel contained in the tank comprises estimation of fuel amount, fuel volatility (PVR), fuel being injected into engine cylinder at starting subject to estimated fuel volatility (16). Estimated fuel volatility (15) is replaced by preset magnitude (20) at starting after replenishment.

EFFECT: easier starting at frost.

14 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed invention can be used for generation of four-stroke ICE sync signal NOCYL for ICE with uneven number of cylinders C1, C1, C3 with the help of electronic control system 7. Said NOCYL signal allows identification of preset moment at engine cylinder thermodynamic cycle. Sync signal is determined proceeding from TDC signal that identifies the position of every cylinder and signal Cg, Bn indentifying kinematics of crankshaft at fuel every ignition. Note here that both signals are generated on the basis of crankshaft position transducer 22. Proposed method comprises the steps whereat engine is operated for preset time interval with fuel ignition at engine every revolution, characteristic signal Cg, Bn is calculated with check magnitude at first second revolutions, sync signal NOCYL is re-initiated if sync signal is misphased.

EFFECT: decreased emission of contaminants.

4 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method consists in utilisation of lubing oil heat and cooling water for heating, oil circulation, executing all preparatory jobs for starting and running standby diesel generator and starting diesel generator. Method covers automated and synchronous control over fuel and supercharge air feed at various operating conditions by means of three-pulse combination electronic fuel feed controllers and at various air pressures in the entire range of static loads and sharp variations of load. Regulation of lubing oil and cooling water temperatures is adapted to actual conditions, loads are distributed among diesel generators operated in parallel subject to control criterion and actual mean load thereto. Invention covers also forced synchronous outage of supercharging turbo compressor and diesel generator at normal and emergent conditions.

EFFECT: power savings, higher efficiency and reliability of starting and efficiency of diesel generator.

8 cl, 6 dwg, 1 tbl

FIELD: engines and pumps.

SUBSTANCE: this method in combination with cold start and/or warming-up at an idle operation of internal combustion engine (1) is used to start engine (1) by means of a cold start mode with preset values of engine operating parameters; quantity of accumulated one or several hydrocarbons in at least one component of exit gas neutralisation is estimated and the cold start mode of a motor is activated, if according to estimation quantity of peaks of HC-desorption stipulated by combustion gases of filler exceeds preset limit value.

EFFECT: method provides possibility of heating of components of exit gas neutralisation and allows defining exact time of engine warming-up with possibility to stop an active mode of the motor cold start, thus allowing to avoid fuel overflow or at least to restrict it.

20 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method comprises the following jobs: (a) feeding first amount of fuel in combustion chamber in compression stroke by pre-injection to produce partially homogeneous premix in combustion chamber, (b) feeding main amount of fuel in combustion chamber by main injection and combustion of fuel-air mix by self-ignition. Beginning of pre-injection is selected to allow premix to ignite after short delay of ignition while beginning of the main injection is selected to allow main amount of fuel to be injected during combustion or directly after combustion of said premix. Pre-injection is executed at crankshaft turn through 22° to 100°, in particular 25° to 30°, before piston TDC. Main injection is executed at crankshaft turn through 20° before piston TDC to 20° after TDC. Main injection is divided into some partial injections. In starting ICE, first partial injection is executed at crankshaft turn through 2° before TDC to 2° after TDC, while second partial injection is executed at crankshaft turn through 2° to 5° after TDC.

EFFECT: fast starting, higher reliability.

10 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises storage battery, device to disconnected the latter from onboard circuit, electric starter, starting contactor terminals, capacitive power accumulator made up of capacitors interconnected in series or in parallel. Charge circuit of said power accumulator comprises current-limiting resistor and diode to shunt said resistor. System includes also additional contactor with closing contacts to connect storage battery with said capacitive power accumulator prior to starting locomotive diesel engine, contactor with closing contacts, transducers of accumulator charge current and voltage, controlled rectifier of accumulator charge, unit to generate and indicate charge voltage, and pulse-phase control unit. Said accumulator is connected to controlled rectifier output via contactor with closing contacts. Rectifier power input is connected to charge generator output. Voltage transducer is connected parallel with power accumulator. Outputs of current and voltage transducers are connected with voltage generation unit input and indication unit input. Output of voltage generation unit is connected to pulse-phase control unit with its output connected to control input of controlled rectifier. Capacitive power accumulator is charged automatically without interference of engine crew after starting of locomotive diesel. Charge indication unit allows visual control over charge current and voltage.

EFFECT: higher reliability and longer life, automated charging.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed electric starter comprises storage battery (1), starter (2), traction relay comprising winding (3) and make contact (4), starting switch (5), capacitive storages (6), (7) and (8), short-term make button (9), threshold elements (10), (11) and (12), decoder (13) and interrupter disks (14), (15), (16), (17), (18), (19) and (20) with control electrodes.

EFFECT: starter higher starting current.

1 dwg

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