Engine starting process (versions) and system

FIELD: engines and pumps.

SUBSTANCE: engine starting method lies in the fact that the throttle of the cylinder port is closed and at least a portion of fuel is injected into the cylinder during a cylinder cycle when the port throttle is substantially closed. The fuel content is injected during an interval which comprises intermediate position which is substantially equalized to the predetermined cylinder vacuum level. Invention discloses the engine starting process and engine control system.

EFFECT: improvement in reliability of engine start at low temperatures and emmision reduction during the engine start by improving fuel vaporization.

20 cl, 9 dwg

 



 

Same patents:

FIELD: power industry.

SUBSTANCE: invention can be used in pre-starting and auxiliary heat power plants of vehicles for simultaneous generation of heat and the electric power. Pre-starting heat power plant for vehicles contains an internal combustion engine (1), an electric generator (2), a waste heat exchanger (3) utilising the heat of exhaust gases, a mixing device (4) with an electric heater, a liquid pump (8) with the electric drive, a check valve (5) and hydraulic lines (9), (10), (11) with heat carrier. The plant is also contains the oil pump (15) with the electric drive, the recuperative heat exchanger (18) for heating of engine oil and the oil line which is built in the oil pan with the nozzles directed towards necks of the cranked shaft and towards the oil pump of the internal combustion engine, oil hydraulic lines. The recuperative heat exchanger (18) of heating of engine oil according to the series hydraulic circuit is connected by hydraulic lines of the heat carrier to the mixing device (4) with the electric heater. The oil pump (15) with the electric drive through oil hydraulic lines supplies engine oil to the recuperative heat exchanger (18) for heating of engine oil after which heated engine oil is supplied into the oil line which is built in the oil pan with the nozzles directed towards the necks of the cranked shaft and towards the oil pump of the internal combustion engine.

EFFECT: design simplification and reduction of dimensions.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. The invention proposes an electric heater of diesel oil or motor oil, which includes the following: outer casing (2), heating rods (1) and temperature control (3). Each of the heating rods (1) includes an electrode part, a heating part and a cover of the external coating, as well as it is connected to a mounting end of temperature control (3) by means of the electrode part and rigidly attached to outer casing (2) with one of its ends. Temperature control (3) is arranged inside outer casing (2); cavities of outer casing (2) are filled with a liquid sealant, and hole (5) is arranged on outer casing (2) for fixation of the heater in a set position.

EFFECT: heater has a low price; it is composed in the form of a structure; it is safe, reliable and serviceable.

6 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed heater comprises housing with coolant feed and discharge channels and cover tightly coupled with said housing, tubular electrical heater secured therein and motor-drive rotary pump Impeller is fitted on pump rotor shaft inside aforesaid housing Note here that said rotary pump is provided with jacket fitted in heater housing with secured by its one end in the latter in inlet channel zone Its opposite end is secured at housing cover in the area of rotor shaft with impeller exit so that said impeller is located inside aforesaid jacket Note here that said jacket in impeller zone has openings to communicate the jacket inside with heater housing inside Motor rotor is enclosed in cup-like case closed by cup cover on cover outer side and secured at cover inner side Note here that rotor shaft section with impeller fitted thereon extends through cup cover and heater housing cover inside the housing Tubular heater is composed of helical coil arranged around said jacket above its openings and secured at heater housing cover Coolant feed channel, pump jacket and rotor shaft with impeller are aligned.

EFFECT: higher efficiency, electric power saving.

11 cl, 5 dwg

FIELD: heating.

SUBSTANCE: invention claims autonomous device for diesel fuel heating in fuel tank 16, including heat exchanger 1 and heat carrier feed and control system 2. System 2 includes trolley 3 with gas heater 4 for heat carrier, pump 5, accumulator 6, control device 7 and gas cylinder 8 mounted on the trolley, heat exchanger is made in the form of rigid spiral tube mounted on handle 10 by a joint and connected to heater 4 with a flexible hose. Electric pump for heated diesel fuel stirring is installed inside spiral tube of the heat exchanger.

EFFECT: enhanced efficiency of diesel fuel heating in the whole volume of fuel tank.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: measured ambient air and coolant temperatures are used to define air heater operating interval to correct it by fuel mix temperature in combustion chamber at compression stroke end while fuel in nozzle is heated to maximum possible value. After engine start, fuel heating intensity is decreased while nozzle operating heat conditions are kept up with the help of thermal pickup built in the nozzle, heater and control unit and maintained at said level during the entire cycle of post-starting interval with allowance for engine heat conditions and ambient air temperature. Inlet fuel and air controlled heating subject to engine and ambient air temperature allows maintenance of optimum temperature of combustion mix in the engine combustion chamber at whatever operating conditions.

EFFECT: decreased time and power consumption by diesel preparation for starting.

3 dwg

Fuel heater // 2535431

FIELD: machine building.

SUBSTANCE: electric fuel heater comprising body in form of the bolt with cavity in its rod, input and output holes, agitator, ceramic heating element, nickel-chromium spiral connected in series with the ceramic heating element, and casing. The internal cavity of the fuel heater body is made with spiral groove. The fuel agitator installed in the internal cavity of the body is in form of the bolt containing guide part and agitating element in form of the ellipse with spiral groove direct opposite to the spiral groove of the body.

EFFECT: higher efficiency of heat transfer.

1 dwg

Ice liquid heater // 2535291

FIELD: engines and pumps.

SUBSTANCE: heater comprises ICE, electrical generator, heat exchange offgas heat recovery unit, offgas main line, fluid lines, electrically drive fluid pump, check valve and tank with electric heater. In compliance with this invention incorporates extra recuperative heat exchanger for cooling of coolant with electrically driven blower and three-way valves with servo drive. Note here that fluid electrically driven pump is communicated via coolant fluid lines with ICE cooling system. Said system accommodates the tank with electric heater and heat exchanger-offgas heat recovery unit. Said heat exchanger is connected via fluid line with the first three-way valve with servo drive. The latter is arranged downstream of check valve in fluid line feeding coolant from ICE to carrier heater radiator lines and those of aforesaid recuperative heat exchanger. Second three-way salve with servo drive is arranged upstream of electrically driven fluid pump to communicate coolant feed and discharge lines with carrier ICE. Besides, ICE exhaust gases are fed via offgas main line to recuperative heat exchanger.

EFFECT: higher efficiency of pre-starting heating, higher thermal efficiency, decreased overall dimensions.

1 dwg

FIELD: transport.

SUBSTANCE: engine prestart heating is performed by natural gas feed into prestart heater combustion chamber to heat carrier engine coolant by natural gas combustion heat. Natural gas is fed from low-pressure main line via distribution gas line and gas hose into prestart heater combustion chamber. Prestart heater control system power supply and that of actuators related therewith is performed by connection to power supply located outside the carrier.

EFFECT: higher reliability and efficiency at long stops.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: system to maintain availability for start-up of an internal combustion engine (7) of a diesel locomotive comprises a standard system (4) for cooling of an internal combustion engine (7), a liquid heater (1), connected to the main manifold of the standard cooling system (4), a standard fuel system (18) of an internal combustion engine with a standard fuel tank (23) and a standard injecting fuel pump (19), an additional fuel tank (20), equipped with an overflow pipeline (21), a drain pipeline (22) with a tap and a pipeline connecting the additional fuel tank (20) with the liquid heater (1). There is an additional fuel pump (17), installed in the standard fuel system (18) in parallel to the standard injecting fuel pump (19), an additional oil pump (11), connected in parallel to the standard injecting oil pump (43), a device (15) for booster charge of an accumulator battery (16) of a diesel locomotive, maintaining it in the condition of availability for start-up of the internal combustion engine, and cooling coolant temperature sensors (13) for control of system operation, connected into the pipeline (46) with the lowest coolant temperature in the cooling system of the internal combustion engine. The additional fuel tank (20) of the system is connected into the drain pipeline of the standard fuel system (18) for provision of its reliable filling with diesel fuel. Additional circulating water pumps (30) are installed on inlet pipelines of standard liquid heaters (28) of air in driver's cabins (29) for provision of conditions in them for start-up of the internal combustion engine (7). Supply of the liquid heater (1), circulating electric motors (8), oil (11) and fuel pumps (17), a device (15) for booster charge of the diesel locomotive accumulator battery (16) and elements of the control system (47) is arranged via a separate cabinet (48) of electric equipment from the external source of energy.

EFFECT: increased reliability of system operation and increased time for engine standing idle in cold time of the year as continuously available for start-up.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method consists in gas feed into cylinders and cylinder antechamber, spark ignition of gas in antechambers, and feed of gas combustion product from antechamber into combustion chambers of engine cylinders. At starting gas engine at crankshaft cranking by starter to stable idling rpm, gas is forced into engine cylinder antechamber and/or gas engine cylinders, gas volumetric combustion heat exceeding that of natural bas by some 1.5-2 times and higher. At starting the gas engine, fuel gas can be fed into some cylinders of multicylinder gas engine.

EFFECT: higher reliability of starting and accelerated starting.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry and can be used in automotive engine driven compressor system. Compressor system (10) of vehicle (12) comprises compressor (16) driven by vehicle (12) engine (14). Said system comprises intake air guide (18) to force air pre-compressed by drive engine (14) turbosupercharger (20) to compressor (16). Said intake air guide (18) incorporates means (22) to flow section to construct supercharge pressure of pre-compressed air fed to compressor (16). Supercharge pressure maximum magnitude is set at idling subject to at least one of the following terms, i.e. compressor (16) oil outburst or compressor (16) power loss. Besides, invention covers the method of compressor system operation.

EFFECT: decreased power loss at idling.

15 cl, 9 dwg

FIELD: engines and pumps.

SUBSTANCE: in an inlet pipeline, at a small distance to an inlet valve of a cylinder there is a blowdown valve installed driven from a common cam shaft. In the end of an inlet stroke, 40-50° to the top dead centre (TDC), the inlet valve is opened. Spent gases go through the open inlet valve and reach the closed blowdown valve. Near the TDC, with remaining 10°, the blowdown valve is opened, and the combustion chamber is blown with air from an inlet header, afterwards the cylinder filling starts. Such solution makes it possible to substantially expand the angle of valves closure, this increasing the filling phase.

EFFECT: higher specific capacity of the engine with preservation of low toxicity of spent gases.

4 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: control device of exit gas recirculation (EGR) for control of diesel engine includes EGR valve by means of which the engine EGR flow is controlled, suction air throttle valve by means of which the engine suction air flow is controlled, and the mechanism in which EGR valve opening is enabled in conjunction with the opening of air throttle valve. Each of the determining opening lines (characteristic curves) and with regard to opening of EGR valve and air throttle valve has dead zone section, where the flow rate remains unchanged, even when the valve opening increases above some opening limit. EGR control device is equipped with dead zone evaluation device that estimates excess air design factor λ considering the oxygen residue in EGR gas. The conclusion is made that at least one of EGR valves and air throttle valve is engaged in dead zone, on the basis of the rate of change of the estimated design factor λ of excess air when the rate of change of excess air design factor λ is less than the preset level. EGR control device is equipped with dead zone compensation device that makes the corrections concerning command signals of opening in relation to EGR valve and suction air throttle valve so that dead zones do not interfere with the mechanism concerning joint opening operation when evaluation device of dead zone makes a conclusion that at least one of EGR valves and air throttle valve is engaged in dead zone and the engine is in the condition of transient process.

EFFECT: simpler control of the valve opening.

7 cl, 12 dwg

FIELD: internal combustion engine.

SUBSTANCE: invention considers spark ignition internal combustion engines. The internal combustion engine includes variable compression mechanism, the mechanism of valve timing adjustment, and throttle gate and catalyst and temperature predicative tool of the catalyst. Catalyst is placed in the outlet port of the engine. When engine load becomes lower, the mechanical compression degree increases to the maximum mechanical compression value and induction valve timing is shifted from the lowest dead point of induction given that the catalyst is active. If it is predicted that in case of load lowering the catalyst temperature will fall below activation temperature, then reduction of mechanical compression degree, shift value of induction valve timing in a direction to lower dead point of induction and reduction in degree of throttle gate opening becomes larger to lower the degree of actual expansion simultaneously with supporting or increasing the actual compression degree.

EFFECT: ensuring catalyst temperature increase at the same time maintaining good conditions for combustion initiation.

3 cl, 25 dwg

FIELD: internal combustion engine.

SUBSTANCE: invention considers spark ignition internal combustion engines. The internal combustion engine contains the variable compression mechanism (A) which allows changing the degree of mechanical compression, and the mechanism (B) of valve timing adjustment, which allows changing the induction valve timing (7). The volume of induced air supplied to the combustion chamber (5), is controlled by means of changing the induction valve timing (7). Degree of mechanical compression increases to the maximum degree of mechanical compression when the volume of induced air supplied to the combustion chamber decreases. In this case the volume of induced air supplied to the combustion chamber (5) decreases when the induction valve timing (7) is moved from the dead point of induction to the limit valve timing. When the induction valve timing (7) reaches the limit valve timing, the volume of induced air into the combustion chamber (5) becomes the limit controlled amount of induced air controlled by the valve timing adjustment mechanism. When the volume of induced air into the combustion chamber (5), decreases additionally due to the limit controlled volume of induced air, induction valve timing (7) is kept at the limit valve timing. During acceleration, when the volume of induced air into the combustion chamber (5) is less than limit controlled volume of induced air, if required acceleration degree is higher than predefined degree, movement of the induction valve timing (7) starts from the limit valve timing in the direction approaching to the lower dead point of induction when the volume of induced air to the combustion chamber is less in comparison with that when required acceleration degree is lower than predefined degree.

EFFECT: acceleration increase.

4 cl, 15 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises variable compression ratio mechanism, variable phase distribution setter, and restrictor. With engine load decreasing, compression ratio increases to its maximum kept thereat in load zone lower than that of engine. Note here that intake valve closing setting displaces from BDC to maximum closing setting. With closing setting reaching maximum values, engine load is lower that load at which compression ratio reaches its maximum. Simultaneously, actual compression ratio downs gradually compared with engine high-load operation time. With intake valve closing setting reaches its maximum, amount of air intake is controlled by restrictor in the range of loads lower than that of engine whereat intake valve closing setting reaches its maximum. At loads lower the engine load when intake valves closing setting reaches its maximum, restrictor may be retained in completely open position.

EFFECT: permanent stable ignition.

3 cl, 12 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with spark ignition includes regulated gas distribution phase mechanism, variable compression degree mechanism and throttle valve. Throttle valve is arranged in inlet ICE channel. When ICE load decreases from high to low, the closing moment of inlet valve is moved in the direction from lower dead inlet point. At low load operation of the engine the mechanical compression degree is kept maximum. At high load operation of the engine, the mechanical compression degree increases when the engine load becomes lower; at that, actual compression degree remains constant. Pre-determined load is set within the range of load where mechanical compression degree is kept maximum. Throttle valve is retained in fully opened state in the area between high and pre-determined (L2) loads. When engine load becomes lower, the opening degree of throttle valve becomes lower and opening moment of inlet valve moves in the direction from upper dead inlet point. In the load area, where mechanical compression degree is kept maximum, actual compression degree becomes lower when the engine load decreases.

EFFECT: improving combustion process allowing to obtain high thermal efficiency.

2 cl, 11 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with spark ignition includes variable compression degree mechanism and mechanism for adjustment of gas distribution phases. Variable compression degree mechanism has the possibility of changing mechanical compression degree. Gas distribution phase control mechanism has the possibility of controlling the inlet valve closing moment. Mechanical compression degree in working range of low load, excluding idle operation, is more than during the operation at high load. Mechanical compression degree during idle operation becomes lower than for working range of low load. When engine operation is switched over to idle mode, mechanical compression degree can be decreased gradually.

EFFECT: reducing vibration and noise caused by the engine during idle operation.

9 cl, 13 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with spark ignition includes compression degree control mechanism, gas distribution phase control mechanism and throttle valve. When load on ICE becomes lower, the closing moment of inlet valve is shifted aside from lower dead point of suction stroke, and mechanical compression degree increases to maximum. At engine operation in range of loads that are lower than engine load at which mechanical compression degree becomes maximum, mechanical compression degree is maintained as maximum load, and actual compression degree decreases. On engine operation side with high load the mechanical compression degree decreases gradually when the load increases. When engine load becomes lower, inlet valve is shifted from lower dead point of inlet stroke. When engine load decreases on engine operation side with low load, actual compression degree decreases; at that, throttle gate closes.

EFFECT: providing favourable conditions for fuel ignition and combustion and improving thermal effectiveness.

5 cl, 11 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with spark ignition includes regulated gas distribution phase mechanism, variable compression degree mechanism and throttle valve. Regulated gas distribution phase mechanism has the possibility of regulating the setting of inlet valve closing moment. Variable compression degree mechanism has the possibility of changing mechanical compression degree. At negative pressure in ICE inlet valve, which is lower than the required negative pressure, throttle valve opening degree is set to lower value. At lower throttle valve opening degree in the inlet valve there shall be set the required negative pressure or bigger negative pressure. At setting of the required or bigger negative pressure in inlet valve the setting of closing moment of inlet valve shifts in the direction close to lower inlet dead-point. Volume of intake air, which corresponds to the engine load, is supplied to combustion chamber in compliance with throttle valve opening degree. At that, mechanical compression degree is set to lower value in order to reduce the pressure at the end of compression.

EFFECT: providing the possibility of creating big negative pressure in inlet engine channel during ICE operation at low loads.

10 cl, 13 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

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