43 results about "Glowplug" patented technology

The invention relates to a control method based on low-temperature cold start of a heuristic integrated heavy oil engine, and relates to the field of heuristic integrated heavy oil engines. According to the technical scheme, the preheating plug in the cylinder is combined with the air inlet heating grid, synchronous control is achieved through the same relay, the electric energy requirements of synchronous work and dragging and preheating are met by means of sufficient battery capacity, and the device can be adapted to the ultra-low temperature of-40 DEG C or below and the plateau environment of 4700 m or above; three starting attempts are supported by single-time power-on through intelligent preheating control logic, the pre-preheating and heating-while-dragging processes are executed each time, fault information is automatically uploaded after starting fails, frequent power-off is not needed, and the starting efficiency is improved. And moreover, through an intermittent post-preheating and intake synchronous heating strategy, the combustion stability in the cylinder is effectively improved, the rotating speed fluctuation time is shortened, and mechanical damage caused by flameout and unstable idling after starting is avoided. In addition, the dragging rotating speed control based on the torque can prevent the problem of engine damage caused by accidental detonation after multiple starting failures.

The invention discloses a fuel injection method and device of an engine, a vehicle and a storage medium, a cylinder cover of the engine is provided with a fuel injector, a glow plug is arranged below an air inlet channel, the fuel injector is configured to inject fuel into a combustion chamber of the engine, and the glow plug is configured to heat the combustion chamber of the engine. The method comprises the steps that under the condition that an engine starting instruction is received, the cooling water temperature of an engine is obtained; under the condition that the temperature of the cooling water is smaller than or equal to a first preset temperature threshold value, the glow plug is controlled for heating; and under the condition that the temperature of the glow plug reaches the second preset temperature threshold value, the motor of the vehicle is controlled to drag the engine to rotate at the preset rotating speed, and the fuel injector is controlled to conduct single-time injection into the combustion chamber in the later period of the compression stroke. According to the fuel injection method, the problem that single-fuel cold start of the methanol engine is difficult in cold weather can be solved, the success rate of cold start of the engine is increased, and the cost can be reduced.

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.

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).

The present invention discloses a spiral coil heating flame preheating plug and a diesel engine, belonging to the technical field of engine cold start auxiliary system. The spiral coil heating flame preheating plug comprises a flame cover, a shell, an electromagnetic induction evaporation net, an oil inlet pipe and an electromagnetic induction spiral coil, wherein the wall of the flame cover is provided with ventilation holes, and is coaxially arranged in the inner cavity of the lower part of the shell; the electromagnetic induction evaporation net is sandwiched between the inner wall of the shell and the outer wall of the flame cover; one end of the oil inlet pipe is connected to the electromagnetic induction evaporation net, and the other end can be connected to the oil pump; the electromagnetic induction wire spiral coil is spirally wound on the outer wall of the shell and the position corresponding to the electromagnetic induction evaporation net; the inner cavity of the upper part of the shell forms a mixed gas cavity. The spiral coil heating flame preheating plug can significantly improve the cold start performance of the diesel engine in extremely cold and harsh environments.

The invention discloses an ultrasonic air atomization diesel oil preheating plug, and relates to the technical field of diesel oil preheating plugs. The oil supply heating unit is arranged in the shell and comprises an L-shaped oil supply capillary tube penetrating through the shell and a PTC (Positive Temperature Coefficient) heater fixed on the oil supply capillary tube; the atomizing unit is arranged at the bottom of the shell and comprises a trumpet-shaped atomizing surface microwell plate and an annular piezoelectric ceramic piece which is fixed on the bottom surface of the atomizing surface microwell plate and is provided with a central through hole; through mutual cooperation of a shape memory alloy coil spring, a sliding supporting column, a cross-shaped sliding limiting hole, a supporting base, a scraping head, a reset spring and a back face cleaning area of the atomization face microwell plate, mechanical scraping can be conducted on the back face of the atomization face microwell plate, a carbon deposition layer is removed, power is cut off after the action is completed, the coil spring is cooled and contracted, and the atomization face microwell plate is cleaned. And the mechanism is reset under the action of the reset spring, so that the problems that the vibration damping is increased, the atomization efficiency is sharply reduced and even fails due to carbon deposition coverage on the ultrasonic atomization surface are solved.

The utility model provides a glow plug with a protection mechanism, which relates to the technical field of automobile glow plug protection and comprises a glow plug body, an air port end is arranged at the top end of the glow plug body, and a threaded connection end is arranged on the outer surface of the bottom end of the glow plug body. The protection mechanism can be connected with an automobile internal component and an automobile external component through the connecting cabin arranged in the protection mechanism, the retention threaded end formed in the connecting cabin and the external threaded end formed in the cover body, and in the process, a limiting block connected with the connecting cabin and a limiting groove formed in the limiting block can be subjected to positioning type anti-displacement installation; in the state that installation is completed, a limiting block and a spring piece which are connected with the connecting cabin body and an empty groove formed in the cover body buffer the bottom end and the top end of the glow plug body, and therefore the situation that the glow plug body deforms is prevented, and when the cover body and the connecting cabin body connecting assembly are damaged, the cover body and the connecting cabin body connecting assembly are not damaged. And rapid and convenient replacement can be carried out, and the problem of inapplicability of integrated protection is solved.

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.

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 present invention discloses a disc-type coil heating type flame preheating plug and a diesel engine, belonging to the technical field of engine cold start auxiliary system. The disc-type coil heating type flame preheating plug comprises a flame cover, a disc-shaped electromagnetic induction coil, a disc-shaped electromagnetic induction heating element, an evaporation net and an oil pipe, wherein the wall of the flame cover is provided with ventilation holes, and the bottom of the flame cover is coaxially provided with a disc-shaped electromagnetic induction coil; the disc-shaped electromagnetic induction heating element is coaxially provided on the top surface of the disc-shaped electromagnetic induction coil; the evaporation net is coaxially provided on the top surface of the disc-shaped electromagnetic induction heating element; one end of the oil pipe passes through the flame cover and is inserted into the evaporation net, and the other end can be connected to the oil pump; the inner cavity of the flame cover forms a mixed gas cavity. The disc-type coil heating type flame preheating plug can significantly improve the cold start performance of the diesel engine in extremely cold and harsh environments.

The utility model belongs to the technical field of engines, and particularly relates to a cylinder cover and an engine. The cylinder cover comprises a cylinder cover body, a fuel injector mounting hole, two air inlets and two air outlets are formed in the cylinder cover body, the two air inlets and the two air outlets are located at one axial end of the fuel injector mounting hole, and the two air inlets are arranged on one side of the fuel injector mounting hole at intervals. The cylinder cover body is provided with two air inlets and two exhaust ports, the two exhaust ports are spaced from each other and arranged on the other side of the fuel injector mounting hole, an inlet nose bridge area is formed between the two air inlets and provided with a glow plug hole, and the cylinder cover body is further provided with an unloading groove which is formed in the inlet nose bridge area and arranged on the side, away from the fuel injector mounting hole, of the glow plug hole. According to the air cylinder cover, the cold starting effect is improved, the risk of fatigue cracks of the air cylinder cover caused by deformation of the feeding nose bridge area can be reduced through the unloading grooves, the reliability of the air cylinder cover is improved, and the service life of the air cylinder cover is prolonged.

The application discloses a design method and system of a diesel engine quick cold start electric preheating plug, and comprises the following steps: selecting electric preheating plug design parameters; obtaining electric preheating plug performance parameters according to the electric preheating plug design parameters; performing multi-objective optimization on the electric preheating plug performance parameters by using a non-dominated sorting genetic algorithm to obtain a design scheme that meets constraint conditions and is optimal in terms of total heating time of the electric preheating plug when the cylinder reaches an ignition point and a space volume occupied by the electric preheating plug. By using the technical scheme, optimization of the diesel engine quick cold start electric preheating plug is realized, the number of tests is greatly reduced, and the design efficiency and benefits of the electric preheating plug are improved.

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.

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.

The fuel injection pump comprises a nozzle connecting pipe, a connecting cavity, an electromagnetic valve and a pump seat, the upper portion of the pump seat is connected with the nozzle connecting pipe through the connecting cavity, the electromagnetic valve is arranged on one side of the connecting cavity, a cavity is formed in the center of the pump seat, and a liquid inlet pipeline and a liquid outlet pipeline are further arranged below the cavity. The input end of the cavity is communicated with a liquid inlet channel, the output end of the cavity is communicated with a flow dividing channel, oil flows into the cavity from a liquid inlet pipeline, flows into the flow dividing channel through continuous meshing of a gear and then flows out from the flow dividing channel in two sections, one section is upwards led into an electromagnetic valve, and the other section is downwards led into a second cavity. A preheating device is arranged on one side of the connecting cavity, the bottom of the preheating device is arranged on a base of the connecting cavity, the base of the connecting cavity is connected with the pump base, and a preheating plug is arranged in the preheating device and used for preheating and melting viscous liquid in the cavity and the connecting cavity before the fuel injection pump works, so that the flowability of discharged liquid is good, and starting is easy.

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 invention discloses detection equipment and method for an engine glow plug control box. The engine glow plug control box controls a glow plug load loop in an engine to be powered on and work, the detection device is used for simulating the glow plug load loop, and the detection device comprises a shell, a power input interface, a glow plug circuit, a main control switch and a test interface. The power input interface is arranged on the shell. The glow plug circuit is arranged in the shell, and the output end of the glow plug circuit is grounded. The master control switch is arranged on the shell, one end of the master control switch is connected with the power input interface, and the other end is connected with the input end of the glow plug circuit. The test interface is connected with the other end of the main control switch and the input end of the glow plug circuit and is used for being connected with a to-be-tested engine glow plug control box. And the glow plug circuit is electrified to work within continuous preset time under the control of the to-be-detected engine glow plug control box so as to detect the to-be-detected engine glow plug control box. The glow plug load loop is simulated through the detection equipment, and the test process is simplified.

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).

The invention discloses a diesel engine rapid cold start electric glow plug design method and system. The method comprises the steps that electric glow plug design parameters are selected; obtaining electric glow plug performance parameters according to the electric glow plug design parameters; and carrying out multi-objective optimization on performance parameters of the electric glow plug by adopting a non-dominated sorting genetic algorithm to obtain a design scheme that the total heating time consumption of the electric glow plug and the space volume occupied by the electric glow plug are optimal when the ignition point in the cylinder is reached and the constraint conditions are met. By the adoption of the technical scheme, optimization of the electric glow plug for rapid cold start of the diesel engine is achieved, the number of tests is greatly reduced, and the design efficiency and benefits of the electric glow plug are improved.

A method of starting a compression ignition engine is provided. The method comprises using a glow plug of the compression ignition engine to perform a warm up routine to preheat the compression ignition engine. During the warm up routine, a fuel rack actuator of the fuel rack is actuated which controls the quantity of fuel to be injected into the compression ignition engine such that the fuel rack is in a start-up fuel injection position by the end of the warm up routine. Following the end of the warm up routine, the compression ignition engine is cranked until the compression ignition engine starts, wherein the fuel rack actuator maintains the start-up fuel injection position of the fuel rack until the compression ignition engine has started.

The utility model discloses a manual starting system for cold start of an alcohol fuel engine, which belongs to the technical field of alcohol fuel engines and comprises an alcohol fuel supply unit, an alcohol fuel tank, an oil rail and a one-way valve, the alcohol fuel pump is mounted on the alcohol fuel tank, and the one-way valve is mounted on the oil rail. An oil outlet of the alcohol fuel pump is connected with one end of the one-way valve through a first alcohol fuel pipe, and the other end of the one-way valve is connected with an oil inlet of the oil rail through a second alcohol fuel pipe. According to the utility model, the mode depending on a complex preheating structure is abandoned, unique oil way switching and control logic are adopted, and fuel oil in the oil rail is effectively treated through the gasoline pump, the normally-closed solenoid valve and other components during low-temperature starting; the problems of potential safety hazards and structural complexity caused by difficult arrangement of a glow plug mounting hole and leakage of cooling liquid and engine oil are completely avoided, the safety of cold start of the engine is improved, the overall structure of the engine is simplified, and the stability and durability of the engine are improved.

This invention discloses a low-temperature start-up segmented injection calibration method and ECU system for a methanol compression ignition engine, belonging to the technical field of methanol compression ignition engines. The invention includes using the target engine as the data acquisition target, with the ECU collecting three sets of basic data in real time: the ambient temperature of the engine, the cylinder coolant temperature, and the battery terminal voltage. Based on the basic data, a low-temperature start-up temperature level is determined, and then the in-cylinder preheating plug is controlled in a closed loop based on the determination result to stabilize the in-cylinder temperature within the methanol ignition requirement range. This invention, through closed-loop control of in-cylinder preheating and segmented injection coordinated calibration, can reliably achieve a successful start-up at extreme low temperatures of -25°C on the first attempt. This eliminates the energy and fuel consumption caused by external heating, reduces system structural complexity and maintenance costs, while fully retaining the core advantages of methanol's clean and low-carbon operation, significantly increasing the methanol substitution rate and meeting energy conservation and environmental protection requirements.

SOLUTION: A glow plug includes: a housing formed of a metal or metal alloy and having a first end having a first opening, and an opposing second end having a second opening; a heating element extending through the first opening and having a working end, which is exposed outside the first end of the housing, and an opposing terminal end, which is located inside the housing; a brazed sealant assembly connected to the second end of the housing; first and second terminal wires that extend through the brazed sealant assembly and are electrically connected to the terminal end of the heating element; and a dielectric disk located inside the housing and surrounding a portion of the terminal end of the heating element.EFFECT: The invention reduces greenhouse gas emissions.SELECTED DRAWING: Figure 3A

1. The name of this design product: glow plug. 2. Purpose of this design product: This design product is used for engine preheating in automobiles. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model provides a resistance-discharging glow plug, which relates to the technical field of glow plugs and comprises a connecting sleeve, and a glow plug main body is embedded on the surface of the inner wall of the connecting sleeve. When the preheating plug is used, the adjusting ring is pulled down, the adjusting ring extrudes the spring, then one end of the preheating plug body is inserted into the surface of the inner wall of the connecting sleeve, the preheating plug body extrudes the clamping bead, one end of the clamping bead is embedded into the adjusting groove, the adjusting ring is released, the adjusting ring is pushed by the spring to reset, and the clamping bead is extruded until the clamping bead is embedded into the limiting groove. The clamping ball is matched with the mounting hole and the adjusting ring, the glow plug body and the connecting sleeve are fixed, the sealing ring is matched with the supporting ring, the gap between the connecting sleeve and the glow plug body is filled, the sealing effect is guaranteed, when the glow plug body needs to be cleaned and maintained, the glow plug body can be taken out by conducting the operation in the reverse direction, operation is easy, and the work efficiency is improved. And a tool does not need to be used for rotating and dismounting circle by circle, so that the overhauling efficiency is effectively improved.