59 results about "Glow plug" patented technology

A precombustion chamber igniter with a retractable electric glow plug and a cold start control method for a methanol engine are provided. The precombustion chamber igniter includes a fuel injector, a spark plug, and an electric glow plug. The electric glow plug is retractable and has two working positions, at a first position, a heating segment is wholly located in an injection chamber to provide heat energy for the injection chamber, and at a second position, the heating segment is partially located in the injection chamber and passes through a first through hole, and the rest of the heating segment is located in a main combustion chamber of an engine, to provide heat energy for the injection chamber and the main combustion chamber. In a cold start stage of the engine, the heating segment of the electric glow plug is controlled to be located at the second position.

The utility model provides a glow plug with strong durability, which relates to the technical field of glow plugs, and comprises a main body mechanism, the main body mechanism comprises a glow plug body, a heating tube is sleeved in the glow plug body, the heating tube is in sliding connection with the glow plug body, the outer surface of the heating tube is fixedly connected with a fixed block, and the fixed block is fixedly connected with the glow plug body. A limiting block is arranged on one side face of the fixing block. According to the electric heating plug, the main body mechanism is arranged, and the electric heating plug body and the heating tube can be separated, so that when the heating tube is damaged, the heating tube can be replaced, parts which do not need to be replaced can be continuously used, the durability of the electric heating plug is higher, and meanwhile, a part of use cost of the electric heating plug is also saved; and the guide groove is arranged, so that the heating tube can be positioned and mounted, and the fixed block can be positioned at a proper position.

The invention provides a glow plug hot surface ignition methanol machine adopting high-pressure rotational flow umbrella spraying, which relates to the technical field of methanol engines, and comprises a combustion chamber defined by a cylinder body, a piston and a cylinder cover, a methanol rotational flow umbrella spraying ejector and a glow plug, the piston is arranged in the cylinder body, and the cylinder cover is arranged at the top of the cylinder body; the piston is connected to the connecting rod; the methanol rotational flow umbrella spraying ejector is arranged in the cylinder cover and is communicated with the combustion chamber; the methanol rotational flow umbrella spraying ejector is used for spraying methanol into the methanol cylinder to form methanol umbrella-shaped spray; the glow plug is arranged in the cylinder cover and is communicated with the combustion chamber; and the glow plug is used for igniting the methanol umbrella-shaped spray sprayed into the cylinder body. According to the invention, the cylinder cover is punched and additionally provided with the glow plug, the methanol rotational flow umbrella spray ejector is arranged in the center of the cylinder cover, the methanol rotational flow umbrella spray ejector ejects methanol umbrella-shaped spray, and the methanol umbrella-shaped spray does not have a fuel rarefied area between methanol oil beams, so that efficient and clean diffusion combustion of the methanol machine can be realized.

The invention provides a pure ammonia engine system and a control method thereof. The pure ammonia engine system comprises a cylinder block; the air cylinder cover covers the air cylinder body, and a combustion chamber is formed between the air cylinder cover and the air cylinder body; the glow plug comprises a heating body which extends into the combustion chamber from the center of the cylinder cover; the controller is configured to regulate and control the temperature of the hot surface of the heating body based on the operation condition of the pure ammonia engine system; the liquid ammonia ejector is inserted into the combustion chamber from the cylinder cover and is positioned on one side of the glow plug; the spark plug is inserted into the combustion chamber from the cylinder cover and is positioned on the other side, radially opposite to the liquid ammonia ejector, of the glow plug; a plurality of spraying hole sets are formed in the side, facing the heating body, of the end, extending into the combustion chamber, of the liquid ammonia ejector, so that part of liquid ammonia mist sprayed out of the liquid ammonia ejector is filled around the heating body to be ignited by a sparking plug.

The invention belongs to the technical field of engines, discloses a methanol engine combustion system, a control method and a methanol engine, and realizes more stable combustion during cold start and low-load working condition operation of the methanol engine through a glow plug; alpha is limited to be smaller than beta, and the vortex motion direction in the combustion chamber is the piston circumferential direction from the first reference surface to the second reference surface and passing through the preset plane, so that methanol injected into the combustion chamber through the methanol injection hole corresponding to the first reference surface can be guided by the vortex motion in the combustion chamber, and the methanol can be injected into the combustion chamber. The ignition time of the methanol injected into the combustion chamber from the methanol injection hole corresponding to the first reference surface by the glow plug is shortened, namely, the ignition delay period of the methanol is shortened; and then flame generated by combustion of methanol ignited by the glow plug is utilized to sequentially ignite methanol injected into the combustion chamber from other methanol injection holes, so that controllable combustion of direct injection methanol in the cylinder is realized.

A burner assembly (1) for a mobile fuel-operated heater, in particular for a vehicle, comprises an evaporator (20) configured to evaporate a fuel supplied to it, an evaporator receptacle (24) designed to receive the evaporator (20), a peripheral wall (16) defining a combustion chamber (14) in which a gas mixture containing the evaporated fuel can be combusted, wherein the peripheral wall (16) defines a central axis (M), a glow plug (10) with a shaft section (12) comprising a glow element, which is configured to convert a current flowing through it when a voltage is applied into heat for igniting the gas mixture, and a first opening (15) formed in the peripheral wall (16) of the combustion chamber (14) and through which the shaft section (12) of the glow plug (10) extends substantially radially into the combustion chamber (14).A mounting arrangement (44, 45, 46, 17, 8) for the glow plug (10) is configured to allow the shaft portion (12) of the glow plug (10) to pivot within the combustion chamber (14) in a direction (R) along the center axis (M) away from the evaporator (20). A corresponding insert component with an integrally formed retaining ring for the evaporator is also provided.

The utility model relates to an integrated structure of a glow plug and an oil injector sleeve of an internal combustion engine. The fuel injector sleeve comprises a containing cavity used for arranging a fuel injector and an end wall located on one side of the containing cavity, a center hole is formed in the end wall in a penetrating mode, and at least one through hole is distributed in the end wall along the periphery of the center hole. The mounting sleeve is mounted in the accommodating cavity, and the mounting sleeve comprises an accommodating hole corresponding to the through hole; and the heating body comprises a mounting end and a heating end, the mounting end extends into and is connected with the accommodating hole, and the heating end extends out of the through hole. Due to the integrated design of the glow plug and the fuel injector sleeve, the overall size is effectively reduced, the occupied space is smaller, and the compact layout of the internal combustion engine is facilitated.

The invention discloses a zero-low-carbon fuel combustion device based on catalytic heat surface combustion supporting and a control method thereof, and relates to the technical field of aviation power equipment.The zero-low-carbon fuel combustion device based on catalytic heat surface combustion supporting comprises a glow plug suitable for being installed on the wall face of a combustion chamber of an engine and stretching into the combustion chamber of the engine; the protective cover is arranged on the radial outer side of the glow plug, a cavity is formed between the inner circumferential surface of the protective cover and the outer circumferential surface of the glow plug, catalyst layers are arranged on the inner circumferential surface of the protective cover and the outer circumferential surface of the glow plug, a first opening communicated with the cavity is formed in the protective cover, and the first opening comprises a plurality of sub through holes formed at intervals; a second opening is formed between the protective cover and the glow plug; and the injector is suitable for injecting fuel into the first opening. The zero-low-carbon fuel combustion device based on catalytic heat surface combustion supporting has the advantages of being capable of achieving the zero-low-carbon target conveniently, good in ignition performance, high in flame propagation performance, long in service life and the like.

The present invention discloses a combustion system applicable to a large-bore ammonia-diesel engine, which includes an engine, a pre-chamber subsystem, a fuel supply subsystem, and an electronic control subsystem; the interior of the pre-chamber main body of the pre-chamber subsystem is of a plow-shaped structure, and a high-pressure double direct injection injector is installed on its upper left side; the fuel supply subsystem includes an ammonia tank, a diesel fuel tank, and an intake port ammonia injector. Two ammonia supply pipelines of the ammonia tank, one is connected to the liquid ammonia channel of the high-pressure double direct injection injector; the other is connected to the intake port ammonia injector; the diesel fuel pipeline is connected to the diesel fuel channel of the high-pressure double direct injection injector; the electronic control subsystem includes a temperature sensor, a glow plug, a high-pressure double direct injection injector, and an intake port ammonia injector, all of which are connected to the ECU unit. The ECU unit adjusts the injection strategy of the intake port ammonia injector according to the engine throttle opening; controls the liquid ammonia and diesel injection strategies of the high-pressure double direct injection injector and the heating switch of the glow plug according to the pre-chamber temperature to regulate the temperature and combustion mode of the pre-chamber.

The application discloses a compression ignition type methanol engine and a control system thereof, and relates to the technical field of engine control, which comprises a methanol engine and a methanol tank, further comprises a methanol water boiler, and is provided with an electric heating plug at a cylinder of the methanol engine; the methanol tank is connected with the methanol water boiler, a first methanol pump and a second methanol pump through connecting pipelines respectively; control valves one, two and three are arranged on the connecting pipelines respectively; the control system of the compression ignition type methanol engine comprises a cold start and warm-up working condition identification module, an acceleration working condition identification module, a load working condition identification module and an engine control module; the high-efficiency and reasonable heat management system and the air intake passage / in-cylinder double-methanol injection supply technology are adopted, the methanol engine can be operated efficiently in all working conditions, the efficiency and the power of the methanol engine can be improved simultaneously, and the effect of the high-efficiency and high-power compression ignition type methanol engine is realized.

A system for reducing internal combustion engine emissions includes an engine, a catalytic converter fluidly connected to a combustion chamber via an exhaust line, a glow plug positioned along the exhaust line between the catalytic converter and the combustion chamber, and a flame accelerator, without a fluid connection to a separate fuel supply. Methods of using the system include igniting a mixture of air and fuel in the exhaust line using the glow plug, producing an amount of heated combustion gas.

A method is proposed for operating an exhaust gas heater (1) having a combustion chamber (2) into which an air stream is introduced by an air pump (6) and fuel by a fuel injector (16), and the air-fuel mixture is ignited by a glow plug (4). The hot exhaust gases thus formed are passed through the exhaust system (8) of an internal combustion engine (2). A quantity of condensate in the exhaust gas heater (1) is determined, and the output of the glow plug (4) is adjusted to the determined quantity of condensate. Furthermore, an exhaust gas heater is proposed with means for determining the quantity of condensate in the region of the glow plug (4).

This invention provides a glow plug ignition internal combustion continuous supercritical water oxidation device, comprising three parts: an ignition zone, a reaction zone, and a separation zone. The device utilizes the heat from the glow plug to ignite fuel in the inclined reaction tube, rapidly raising the temperature in the reaction zone to the required level, achieving rapid preheating and efficient degradation of organic wastewater. Furthermore, the fuel does not require a preheater during the entire heating process, reducing equipment investment and energy consumption. The lower end of the separation straight tube is equipped with a first electric ball valve, a salt discharge pipe, and a second electric ball valve. By adjusting the opening and closing of the first and second electric ball valves, automatic salt discharge can be achieved, preventing the generation of saline wastewater and facilitating continuous reactor operation and zero discharge, thus meeting the needs of industrial-scale treatment.

A sparked reciprocating four-stroke internal combustion hydrogen-fueled engine having a casing, a rotatable crankshaft, a cylinder inside the casing, a piston inside the cylinder to movably reciprocate along an axis between top and bottom dead center positions (TDC, BDC) and operatively connected to the crankshaft such that the piston imparts a rotational movement to the crankshaft, a combustion chamber within the cylinder between the engine casing and piston head opposite the crankshaft, intake and exhaust valves, hydrogen and water injectors; a spark or glow plug, and an engine control unit to control timing and quantity of hydrogen and water injections by injecting into the combustion chamber first, second, and third quantities of hydrogen at first, second, and third timings, respectively, from 20° before TDC during compression stroke to 20° after TDC, from 110° to 90° before TDC during compression stroke and from 180° to 100° before TDC during compression stroke.

A burner for an exhaust-gas aftertreatment system. The burner includes a housing forming a combustion chamber, the housing having an outlet connected or connectable to an exhaust-gas line of the exhaust-gas aftertreatment system; a fuel feed device for feeding fuel into the combustion chamber; a fresh air feed device for feeding fresh air into the combustion chamber; and an ignition unit for igniting a fresh air-fuel mixture arranged in the combustion chamber. The ignition unit has a glow plug, which is arranged in the combustion chamber in such a way that a longitudinal center axis of the glow plug is oriented obliquely to a cross-sectional plane of the combustion chamber.

The utility model belongs to the technical field of test tools, and particularly relates to a glow plug durability test device and a test board, and the glow plug durability test device comprises a power supply assembly, a power-on and power-off control assembly and a plurality of parameter test assemblies. Wherein the power-on and power-off control assembly is electrically connected with the power supply assembly, and each parameter test assembly is electrically connected with the power-on and power-off control assembly; each parameter testing assembly is suitable for being connected with a corresponding glow plug; the power-on and power-off control assembly is suitable for controlling the power supply assembly to be connected or disconnected with the parameter testing assemblies so that the parameter testing assemblies can collect parameter data of the corresponding glow plugs. According to the utility model, the power supply assembly, the power-on and power-off control assembly and the parameter testing assemblies are matched, and the glow plugs are directly connected to the parameter testing assemblies, so that parameter data of the glow plugs can be automatically tested, the durability of the glow plugs can be automatically tested, the detection efficiency is improved, and the cost is saved.

The invention provides a minimum intake preheating power design method for an on-way heat dissipation flame glow plug diesel engine, which comprises the following steps of: firstly, constructing a diesel engine intake energy conservation equation set considering on-way heat dissipation of an intake pipeline; then, a triple data set composed of the atmospheric environment temperature, the air inlet pressure value and the corresponding minimum air inlet preheating power is obtained according to the diesel engine air inlet energy conservation equation set, and finally, a first Map graph of the minimum air inlet preheating power changing along with the diesel engine rotating speed and the atmospheric environment temperature is obtained according to the triple data set; according to the second Map, the minimum air inlet preheating power changes along with the rotating speed of the diesel engine and the altitude; therefore, the on-way heat dissipation loss of the intake manifold and the intake duct is considered, so that the intake preheating power of the diesel engine can be autonomously regulated and controlled along with the change of the environment temperature, and the cold starting performance of the diesel engine can be improved.

The invention relates to the field of engines, and discloses a compression ignition type alcohol ammonia engine which comprises a temperature-controllable glow plug, a first ejector and a second ejector, and the first ejector can eject methanol into a combustion chamber; the second injector can inject ammonia fuel into the combustion chamber; methanol sprayed into the combustion chamber combusts under the action of the temperature-controllable glow plug to ignite ammonia sprayed into the combustion chamber so as to push the piston to move, the piston drives the crankshaft to rotate through the connecting rod, and the crankshaft drives the output element to move so as to achieve power output. Methanol is used as an ignition fuel, then methanol combustion heat is used for igniting an ammonia fuel, the ammonia fuel is used as a main fuel, compression ignition of the ammonia fuel is achieved, only nitrogen and water are generated during combustion of the ammonia fuel, and the carbon emission of methanol combustion is far lower than that of high-carbon fuel diesel combustion. Methanol is adopted as ignition fuel, ignition reliability is high, and the problem of ammonia escape is avoided. The invention further provides an operation method of the compression ignition type alcohol ammonia engine.

System (100) for heating a catalyst (20) of a vehicle, comprising a chamber (110) that can receive an airflow via a chamber inlet port (112), a glow plug (120) housed in the chamber (110) and configured to heat the airflow received in the chamber (110), and an electric compressor (130) located downstream of the chamber (110) and having a compressor inlet port (132) fluidly coupled to a chamber outlet port (114) for receiving the airflow from the chamber (110). The electric compressor (130) is configured to compress the airflow received from the chamber (110) to increase the temperature of the airflow and to supply a compressed airflow to the catalyst (20) via an outlet port (134) of the compressor in order to achieve a cut-off temperature of the catalyst (20).The preheating of the catalyst (20) takes place before the engine (10) is started, thereby reducing emissions under cold conditions.

The utility model discloses a vehicle metal glow plug convenient to disassemble and assemble, which relates to the related technical field of glow plugs, and comprises a glow plug main body, and a heat conductor is arranged in the glow plug main body; the clamping assembly is arranged in the glow plug main body and is used for multi-point positioning of the heat conductor; and an annular groove is formed in the outer wall of the glow plug body, and the rotating assembly is arranged in the annular groove and used for limiting displacement of the clamping assembly. The arrangement mode that the clamping assembly and the rotating assembly are matched is utilized, the clamping assembly can be controlled to clamp, fix or disassemble and replace the heat conductor through rotation of the rotating ring in the rotating assembly, the damaged heat conductor can be conveniently replaced without using any tool, the maintenance time is greatly saved, and the working efficiency is improved. The usability of the equipment is improved, and other parts can be normally used, so that the durable effect is achieved, and the use is convenient.

A method and a device for diagnosing a heater (1) of an exhaust system (8) of an internal combustion engine (2) are proposed, wherein air is supplied to a combustion chamber (3) of the heater by a secondary air pump (6) and fuel is supplied by an injection valve (16). An air-fuel mixture thus formed in the combustion chamber (3) is ignited by a glow plug (4). The fuel is injected by controlling the injection valve (16) for individual partial injections at predetermined times. The combustion of the individual partial injections triggers a sensor signal in a pressure sensor (21) in the air supply to the combustion chamber (3) or a connecting pipe (9) from the combustion chamber to the exhaust system (8).By evaluating the pressure signal of the pressure sensor (21) with a frequency characteristic of the times of the partial injection and by evaluating the signal of a further sensor (10, 22), a continuous injection of fuel through the injection valve (16) is determined.

The invention provides an engine system and a control method for the engine system, and relates to the technical field of internal combustion engine parts. The cylinder cover is arranged above the cylinder body in a covering manner; the oil sprayer is mounted on the cylinder cover, and one end extends into the cylinder body; the two glow plugs are installed on the cylinder cover and located on the two opposite sides of the oil sprayer respectively, and each glow plug comprises a heating body stretching into the cylinder body; the two opposite sides of the end, extending into the cylinder body, of the oil sprayer are each provided with an injection hole set, the injection directions of the two injection hole sets face the two heating bodies correspondingly, and each injection hole set comprises at least two injection holes formed in the extending direction of the oil sprayer. According to the invention, the two heating bodies are arranged in the cylinder body, so that the fuel mist beams sprayed by the oil sprayer are filled near the hot surfaces of the two heating bodies to ignite the fuel mist beams near the hot surfaces of the heating bodies, and the ignited fuel mist beams are diffused in the cylinder body, so that the fuel mist beams in the cylinder body are fully and stably combusted.

This control device comprises: an acquisition unit that acquires information indicating the terminal voltage of a battery for starting an engine; a pre-glow period calculation unit that calculates, on the basis of the terminal voltage, a pre-glow period which is the period from when the operation of a glow plug for heating a combustion chamber of the engine begins to when the driving of a starter of the engine begins; a glow plug control unit that turns on the glow plug at the beginning of the pre-glow period and turns off the glow plug when the engine is successfully started; and a prohibition period setting unit that sets a prohibition period, during which the glow plug is prohibited from turning on, after the glow plug is turned off. The glow plug control unit does not turn on the glow plug during the prohibition period.

A precombustion chamber igniter with a retractable electric glow plug and a cold start control method for a methanol engine are provided. The precombustion chamber igniter includes a fuel injector, a spark plug, and an electric glow plug. The electric glow plug is retractable and has two working positions, at a first position, a heating segment is wholly located in an injection chamber to provide heat energy for the injection chamber, and at a second position, the heating segment is partially located in the injection chamber and passes through a first through hole, and the rest of the heating segment is located in a main combustion chamber of an engine, to provide heat energy for the injection chamber and the main combustion chamber. In a cold start stage of the engine, the heating segment of the electric glow plug is controlled to be located at the second position.

The invention relates to a fuel ignition fault diagnosis method and system for a hot surface auxiliary compression ignition methanol engine. The method comprises the following steps: in response to loss of a temperature signal of a glow plug, normal current signal of the glow plug and normal exhaust temperature signal of an engine, diagnosing that a temperature feedback circuit of the glow plug is abnormal; in response to existence of a glow plug temperature signal, a glow plug current signal abnormality and an engine exhaust temperature signal abnormality, diagnosing that a heating function of the glow plug is abnormal or a heating circuit is overloaded; if the temperature signal of the glow plug is lost, the current signal of the glow plug is normal and the exhaust temperature signal of the engine is abnormal, the ceramic body at the head of the glow plug is diagnosed to be partially damaged but not broken; and in response to loss of the temperature signal of the glow plug, abnormality of the current signal of the glow plug and abnormality of the exhaust temperature signal of the engine, diagnosing that the ceramic body of the head of the glow plug is broken. According to the invention, the fault of the glow plug can be accurately diagnosed.

Device for preventing icing of a compressed air preparation system, comprising an electrically operated, self-regulating heating element arranged in the airflow at the inlet of the compressed air preparation system, wherein the heating element automatically adjusts its heating power depending on temperature and airflow, so that the incoming compressed air is heated in such a way as to prevent condensation and icing.

Method for regulating or controlling the temperature of a glow plug in a heating phase of the glow plug (2), in which a temperature value is determined as a function of a resistance of the glow plug (2), wherein the heating phase follows a preheating phase, wherein during the preheating phase the cold glow plug (2) is subjected to a heating voltage which is higher than the operating voltage provided for the glow plug (2), whereby a non-stationary temperature profile is formed in the glow plug (2), characterized in that the temperature value (T mod ) depending on a measured resistance (R mess ) and a calculated resistance value (ΔR(t K )) it is determined that the calculated resistance (ΔR(t K )) to determine the temperature value (T mod) during the transient temperature profile within the glow plug (2) is calculated using a physical model, so that the temperature value (T mod ) is determined at several time intervals (k), whereby the calculated resistance value (ΔR(t K )) changes depending on the previous time intervals (k-1), that the calculated first resistance value (ΔR(t 0+1 ))with a starting value (ΔR(t t=0 )) is initialized so that the starting value (ΔR(t T=0 )) from a difference of a resistance (R t=30 ), which is determined once based on a homogeneous temperature distribution in the glow plug, and a resistance detected after the preheating phase (R push(t=0 )), where the calculated resistance value (ΔR(t K )) is determined as a function of a decreasing exponential function, where the exponents depend on the thermal relaxation time (t K) and a time constant (τ) and that the time constant (τ) is determined once for the respective glow plug (2) used.

The present invention discloses an engine burner, comprising a control unit, multiple cylinders, multiple methanol injectors, multiple glow plugs, an intake pipe, an exhaust pipe, an exhaust gas recirculation passage, and an intercooler passage. The exhaust gas recirculation passage includes a first passage and a second passage, the first passage being used to cool the exhaust gas; the intercooler passage includes a third passage and a fourth passage, the third passage being used to cool the outside air. Based on the engine's operating conditions, the control unit controls the opening and closing of the first, second, third, and fourth passages, as well as whether the first and third passages cool the air and exhaust gas, to adjust the flow to the intake pipe temperature. The formaldehyde injector is used to inject formaldehyde, forming a mixed gas with the air and exhaust gas. The piston in the cylinder compresses the mixed gas in a controlled manner, causing the mixed gas temperature to reach a preset combustion temperature, thereby achieving spontaneous combustion. The above structure ensures that the engine can start normally under different operating conditions.

The utility model provides a glow plug for an engine and the engine, and the glow plug comprises a body; one end of the heating part movably extends into the body, and the heating part is suitable for extending into an air cylinder of the engine to ignite fuel in the air cylinder under the condition of cold start of the engine; and the driving part is mounted in the body and is configured to drive the heating part to extend out of the body or contract towards the interior of the body, so that the heating part can extend into the air cylinder or be separated from the air cylinder. Therefore, the preheating plug is prevented from blocking flowing of airflow in the air cylinder and blocking oil beams injected into the air cylinder.

Burner assembly (1) for a mobile fuel-operated heater, in particular for a vehicle, comprising: - an evaporator (20) arranged to evaporate a fuel supplied to it; - an evaporator holder (24) designed to receive the evaporator (20); - a peripheral wall (16) defining a combustion chamber (14) in which a gas mixture containing the vaporized fuel can be burned, the peripheral wall (16) defining a central axis (M); - a glow plug (10) with a shaft section (12) having a glow element, which is designed to convert a current flowing through it when a voltage is applied into heat for igniting the gas mixture; - a first opening (15) formed in the peripheral wall (16) of the combustion chamber (14) and through which the shaft portion (12) of the glow plug (10) extends substantially radially into the combustion chamber (14); characterized by - a mounting arrangement (44, 45, 46, 17, 8) for the glow plug (10), which is designed to allow pivotability of the shaft section (12) of the glow plug (10) within the combustion chamber (14) in a direction (R) along the center axis (M) away from the evaporator (20).