236results about "Engine starters" patented technology

The invention discloses a system for preheating a cold-state cylinder body through waste gas and a preheating method. The system comprises a preheating pipeline unit, a waste gas turbocharging unit, a temperature monitoring unit, an exhaust valve assembly and a control unit. The preheating pipeline unit comprises an annular preheating main pipeline and a converging pipeline, and a plurality of preheating sub-pipelines are distributed on the periphery of an engine cylinder body; the exhaust gas turbocharging unit comprises a turbine and a gas compressor; the control unit is used for controlling opening and closing of the exhaust valve assembly according to the numerical value of the temperature monitoring unit, so that a main pipeline is preheated through waste gas when an engine is cooled and started, and three-dimensional preheating is conducted on a cylinder body after it is judged that the preheating main pipeline reaches the uniform thermal field according to a first threshold value. And starting the exhaust gas turbocharging unit according to the second threshold value, and enabling all exhaust gas to flow through the exhaust gas turbocharging unit to execute a turbocharging function until a third threshold value is reached. Firstly, a uniform thermal field is established on a preheating main pipeline to heat a cylinder cover, and then the cylinder body is preheated in the circumferential direction of the cylinder body.

The utility model relates to turbine technical field and disclose a power plant turbine vibration protection control device, the outside movable installation of turbine rotor shaft has vibration detection subassembly, the front and back both sides of ring shell all are fixedly installed with face shell, fixedly installed with the partition that arranges in ring between two face shell, the sliding installation of adjacent two partition has arc plate. Turbine rotor shaft will eccentric rotation when rotating, will vibrate at this time, turbine rotor shaft will form extrusion to arc plate simultaneously, and arc plate will contract inwards along the axis of slide rod, and the gasket on arc plate will form extrusion to the trigger end of pressure sensor, and pressure sensor will detect pressure value, and will pass pressure signal to PLC controller, if pressure value exceeds the preset value, PLC controller will control turbine body to stop running, thereby realizes the vibration detection in the operation of turbine and controls its stop running and protects.

The present application relates to a kind of fire diesel engine low temperature combustion efficiency promotion method.Fire diesel engine low temperature combustion efficiency promotion method, starting stage does not need to rely on external point heating equipment, preheating is carried out to intake and fuel respectively using exhaust waste heat and the integrated effect of repeated start, repeated heating under the control of multiple parameters, effectively guarantee the reliability of fast emergency start and emergency start under low temperature environment, through the integrated effect of ultrasonic atomization, multiple parameter collaborative control, effectively solve the problem of poor fuel atomization, mixture is not uniform, combustion is insufficient under low temperature condition, the combustion efficiency under low temperature condition is significantly improved, through the mutual coordination of residual humidity detection, ultrasonic auxiliary water removal unit in shutdown stage, the reliability of next start can be guaranteed.Therefore, the above-mentioned fire diesel engine low temperature combustion efficiency promotion method adapts to the scene demand of fire emergency without external power supply, fast response.

To provide an engine starting device that has a simple configuration and reduces fuel consumption when starting the engine. [Solution] A starting device 100 for engine E that starts with butane gas 3 and operates normally with kerosene 4, comprising a vacuum valve 8 configured to supply butane gas 3, a carburetor 5 configured to supply kerosene 4, a throttle SV provided on the carburetor 5, and a control device, wherein when starting engine E, the control device controls the opening S of the throttle SV of engine E to opening S1 so that the intake vacuum of engine E acts on the vacuum valve 8 to supply butane gas 3 to engine E, and kerosene 4 is not supplied to the carburetor 5 of engine E, and only butane gas 3 is supplied to the intake pipe 6 of engine E, thereby starting engine E.

This invention relates to an intake air preheating control system for electronically controlled diesel engines used in special vehicles, comprising an engine controller (ECU), a liquid heater, a battery, a liquid heater switch, a relay, and a grille heater. The invention also relates to a control method, comprising the steps of: acquiring coolant temperature, intake air temperature, and atmospheric pressure; calculating a weighted temperature and preheating time; comparing the weighted temperature with a coolant temperature threshold at the end of boiler heating; checking the liquid heater switch closure signal; determining whether the liquid heater should exit the heating process; allowing intake air preheating; setting the preheating time; performing intake air preheating; and ending preheating. This invention effectively improves the cold-start performance of electronically controlled diesel engines in low-temperature environments below -35°C and saves battery power.

The invention provides a two-stroke air entrapment direct injection methanol engine. The two-stroke air entrapment direct injection methanol engine comprises an air cylinder body crankcase assembly, a crankshaft assembly, an engine oil lubricating assembly, an air inlet assembly, an oil supply assembly, a starting assembly, an air pump assembly and a control assembly. According to the application, the methanol use environment is met by adopting the design of internal preheating and combustion chamber preheating of the special fuel pump for methanol and heat energy generated by air compression in the fuel rail, and fuel atomization is promoted by gas pressure and high-speed flow generated by air compression of the direct-connected air pump assembly through a gas-entrained injection technology; meanwhile, uniform mixing of gas and fuel oil is enhanced, homogeneous combustible mixed gas is more easily formed in the combustion chamber, the first-stage fuel oil pump and the second-stage fuel oil pump are connected in series, and the stability of the using pressure of methanol fuel oil is effectively guaranteed; according to the preheating function, the engine can rapidly enter the optimal working temperature in the low-temperature environment during low-temperature starting and low-temperature operation, and therefore the emission performance and the working performance of the engine are improved.

Internal combustion engine method, comprising: operating an engine in a first mode, the first mode comprising: Confirming the cold start condition of the engine, determining that the boiling point of the fuel in the engine is lower than a threshold boiling point of the fuel, and In response to confirmation of the engine's cold-start condition and determination that the fuel boiling point in the engine is lower than a threshold fuel boiling point, starting the internal combustion engine via a starter motor at an initial cranking speed, while fuel is injected via fuel injectors for a number of combustion engine cycles since the first combustion engine cycle, and subsequently suspending operation of the starter motor and operating the engine via combustion; and Operating the engine in a second mode, the second mode comprising the following: In response to confirmation of the engine's cold-start condition and determination that the fuel boiling point in the engine is higher than a threshold fuel boiling point, the internal combustion engine is started at a second cranking speed while fuel is injected and the ignition spark is deactivated for the number of combustion engine cycles since the first combustion engine cycle, and subsequently the operation of the starter motor is suspended and the engine is operated via combustion, wherein the fuel boiling point is based on a fuel composition in the engine, wherein in the first mode the fuel injection involves initiating fuel supply at top dead center (TDC) of an intake stroke of a combustion engine cycle and terminating fuel supply at bottom dead center (BDC) of the intake stroke of the combustion engine cycle.and wherein, in the second mode, fuel injection includes initiating fuel supply at TDC of the intake stroke of the internal combustion engine cycle and terminating fuel supply at TDC of a compression stroke of the internal combustion engine cycle.

The present application relates to a kind of aero-engine cold start auxiliary staged preheating system and control method, belong to aero-engine starting technical field;The present application is integrated preheating treatment to engine fuel, in-cylinder mixture thermodynamic state (in-cylinder thermal atmosphere before ignition) and lubricating oil by pipeline fuel preheating device, oil outlet preheating device, cylinder sleeve preheating device and lubricating oil heat preservation preheating device, coupling combustion parameter control strategy, according to the temperature gradient of plateau alpine low temperature environment, design four levels of plateau alpine cold start feedback control strategy, so that aviation kerosene pressure combustion engine provides and implements reasonable preheating scheme according to different low temperature low pressure environment outside in plateau alpine condition, can effectively solve the problem that aviation kerosene pressure combustion engine is difficult to cold start, starting time is long, engine parts wear seriously and cold start stability is poor and the like in plateau alpine environment.

Hybridized aircraft rotor (200) arresting device (1), particularly for helicopters, the aircraft (200) comprising a turbomachine (100) having at least one gas generator (12), a free turbine (14) driven in rotation by a gas flow generated by the gas generator, and a main rotor (52), the arresting device (1) comprising a first reversible electric machine (30) suitable for being coupled to the main rotor (52), and a second reversible electric machine (40) suitable for being coupled to a high-pressure shaft (18) of the gas generator (12), the first electric machine (30) being configured, when the gas generator (12) is in the stopping phase and the aircraft (200) is on the ground, so as to operate in a generator mode so as to create a torque opposing the rotation of the main rotor (52) to brake the latter,The stopping device (1) includes a control unit (60) configured to control the first electric machine (30) and the second electric machine (40) so as to transfer the electrical energy generated by the first electric machine (30) operating in generator mode to the second electric machine (40) operating in motor mode. Fig. 2.

The utility model relates to a vehicle low-temperature energy storage management system which is in communication connection with an external temperature sensor of a vehicle and comprises a heating device, an electronic water pump, a first flow control valve, an electric control three-way valve, an engine air inlet air filter and an engine. The electronic water pump is connected with the first flow control valve, the first flow control valve is connected with an inlet of the electric control three-way valve and connected with an air inlet of the engine air inlet air filter through a first outlet of the electric control three-way valve, and an air outlet of the engine air inlet air filter is connected with a water jacket water inlet of an engine to form an air inlet system heating loop. A second outlet of the electric control three-way valve is connected with a water jacket water inlet of the engine, a water jacket water outlet of the engine is connected with a first water inlet of the heating device to form an engine heat engine heating loop, heat is provided for the engine and an engine air inlet air filter, the engine and the engine air inlet air filter are heated, and then a vehicle is started rapidly and timely.

The invention relates to a vehicle control method and a vehicle, and belongs to the technical field of engines. The vehicle control method comprises the following steps that when a vehicle door unlocking signal is received, whether an engine needs to be preheated or not is judged; and when it is judged that the engine needs to be preheated, the vehicle body control unit controls the heating component to preheat the engine. The engine preheating trigger node is advanced to the time when the vehicle door is unlocked, so that the waiting time after the vehicle is powered on in the traditional process is shortened by effectively utilizing the time window for getting-on preparation of a driver, the response speed and the operation convenience of vehicle starting in the low-temperature environment are improved, and the user experience is improved.

The invention discloses an engine thermal management system, engineering machinery and a thermal management system control method, and belongs to the technical field of engine heat dissipation. In the thermal management system, an engine, a water pump and a radiator are connected to a main circulation heat dissipation loop, and a temperature sensor is installed at a water outlet of the engine; the phase change heat storage loop is connected to the two ends of the radiator in parallel and connected with a first control valve and a phase change unit, and the phase change unit is connected with the radiator in parallel through the first control valve. A second control valve and a waste gas heat exchanger are connected to the waste gas waste heat recovery loop, and a cooling liquid passage of the waste gas heat exchanger is connected with the main circulation heat dissipation loop in parallel through the second control valve; the controller is configured to be used for receiving engine operation parameters and engine water temperature signals collected by the temperature sensor and controlling the rotating speed of the water pump and the opening and closing states of all the control valves according to the received data, switching of the cold start warm-up working condition, the normal heat dissipation working condition and the high-load auxiliary heat dissipation working condition is achieved, and the heat efficiency of the engine is improved.

The utility model belongs to the technical field of vehicle equipment, and discloses an engine and a vehicle. Wherein the fuel oil heater and the first heater are both arranged on the circulation pipeline, at least one of the fuel oil heater and the first heater can heat cooling liquid of the circulation pipeline, and the first heater is an electric heater and can be electrically connected with an external power source. When the engine is in a low-temperature environment, the power output capacity of the storage battery on the vehicle is obviously reduced, and the power utilization requirement for heating the engine cannot be met, so that when an external power supply is arranged outside, the first heater is powered by the external power supply, and the cooling liquid in the circulating pipeline can be heated; a fuel oil heater can be used for jointly heating the cooling liquid in the circulating pipeline; and when no external power supply exists outside, the circulating pipeline is heated by the fuel oil heater, and the heated cooling liquid flows through the cylinder body and the cylinder cover, so that the engine reaches the starting temperature, and the engine can be normally started.

The utility model discloses an ultralow temperature starting gasoline engine air inlet channel heating device which comprises a heating device body, the heating device body comprises a main frame, mounting holes are formed in the four corners of the main frame, a heating piece is fixedly installed in the middle of the interior of the main frame, and connecting ends are arranged on the two sides of the bottom end of the heating piece. By designing a reinforcing fastening mechanism, during installation, a bolt penetrates through the interior of an installation hole to make contact with the surface of a fixed abutting plate, when a threaded rod is rotated, the bottom end of the threaded rod is located in an inner threaded hole and rotates to open the threaded rod in a rotating mode to eject out a movable frame, and the movable frame drives a movable reinforcing plate to be clamped and fixed to the surface of the bolt when being ejected out; and the fastening nut is rotated again to fix the threaded rod, so that the heating device main body is fastened and mounted after the bolt is rotationally mounted, the heating device main body is mounted on the gasoline engine, is not easy to loosen when being vibrated after being used for a long time, and is more stably mounted.

The invention relates to a turbo expander unit for high-pressure gas pressure reduction, in particular to a turbo expander unit for high-pressure gas pressure reduction and a starting and stopping control method thereof, and aims to solve the problems that an existing turbo expander unit for high-pressure gas pressure reduction is high in control requirement and complex in operation, meanwhile, many fault points are introduced, and the working efficiency is high. And the reliability of the turbine expansion unit is reduced. The unit comprises an upstream pipeline, an expansion machine branch, a bypass regulating valve branch and a downstream pipeline, and the expansion machine branch and the bypass regulating valve branch are connected between the air outlet end of the upstream pipeline and the air inlet end of the downstream pipeline in parallel. An air inlet quick cut-off valve, an air inlet adjusting valve, an expansion machine, an exhaust pressure detection instrument and an exhaust cut-off valve are sequentially arranged on the expansion machine branch in the airflow direction, a bypass adjusting valve is arranged on the bypass adjusting valve branch, and a downstream pipeline pressure detection instrument is arranged on the downstream pipeline.

The application discloses a tail edge adjustable turbine blade wake customization method and relates to the technical field of an aero-engine. The method comprises the following steps: S1, a full-ring guide vane is acquired, the full-ring guide vane is composed of a plurality of turbine blades arranged in a circumferential direction; wherein the turbine blade comprises a blade main body and at least one adjustable structure; the adjustable structure is installed in a tail edge area of the blade main body and forms a movable connection with the blade main body; in the full-ring guide vane, the adjustable structures on at least two turbine blades are different in at least one inherent structural feature thereof; S2, at least one turbine blade in the full-ring guide vane is selected; S3, the adjustable structure on the selected turbine blade is driven to move. The application has the advantages that the specific frequency aerodynamic excitation can be reduced, the wake can be weakened by utilizing the interaction of a boundary layer, a wake and a main flow, and the application has a strong customization wake active control capability.

A start mechanism for a propulsion system including a receptacle; at least one portable source of energy disposed within the receptacle; a flow channel fluidly coupled to the receptacle; and a combustion section within the case, the combustion section fluidly coupled to the flow channel; wherein the at least one portable source of energy is configured to produce at least one of electrical energy and a source of chemical energy.

A nozzle segment separation tool for use with a pair of airfoils of adjacent nozzle segments in a turbine is provided. The nozzle segment separation tool includes a pair of separation brackets, a movable separation bracket and a stationary separation bracket, and a hydraulic cylinder positioned between the pair of separation brackets. The movable separation bracket is positioned about a first airfoil of the pair of airfoils and the stationary separation bracket is positioned about a second airfoil of the pair of airfoils. The hydraulic cylinder pushes the movable separation bracket against the first airfoil until the stationary separation bracket pushes the second airfoil to separate from the first airfoil.

Systems and methods for the storage and delivery of fuel, such as methane. In certain aspects, a system is provided with an inner vessel, and outer vessel, and a rope suspension system connecting the two vessels. In certain aspects, the disclosed storage tanks operate at low pressure with long hold times, and have a non-cylindrical shape.

An air turbine starter 10 for starting an engine includes a starter housing 30 defining an inlet (32, fig. 2), an outlet 34, and a flow path 36 extending between the inlet and the outlet. The air turb

A power indicator for extension cords has a male connector at a first end and a female receptacle at a second end, a transformer interposed between, and electrically coupled to, the male connector and female receptacle, the transformer configured to read a load on a circuit and illuminate at least one LED when the load is above a predetermined threshold, indicating that a block heater or other device is drawing power. When connected to an engine block heater, a user can confirm that the block heater is drawing power by the indication of the LED.

A heating device (100) for a vehicle, includes a Printed Circuit Board (11), at least one heating element (20a,20b,20c), a bus bar (30,31) and a terminal pin (42). The Printed Circuit Board (11) is received inside a casing (12) along one bus bar (30,31). The bus bar (30,31) includes at least one bus bar terminal (30a,30b,30c,31a,31b,31c), wherein at least one bus bar terminal (30a 30b 30c 31a,31b,31c) connects a corresponding heating element (20a,20b,20c) to the Printed Circuit Board (11). The terminal pin (42) is integrally formed with at least one bus bar terminal (30a,30b,30c,31a,31b,31c) and is disposed outside the casing (12).

The utility model discloses a diesel engine heater which comprises a heater shell, an oil pipe is installed between the upper side and the lower side of the heater shell in a penetrating mode, a stirring assembly is arranged on the top of the heater shell, and the stirring assembly comprises a gear. The two gears are rotationally installed at the top of the heater shell, a gear ring is rotationally installed at the top of the heater shell, the two gears are meshed with the gear ring, a fixing frame is fixedly installed at the top of the heater shell, and a rotating motor is fixedly installed at the top of the fixing frame. According to the diesel engine heater, through the stirring assembly, the heating media in the heater shell can be fully stirred, the heating media in different areas can be fully mixed, the situation of local overheating or insufficient heating is avoided, and therefore diesel oil in an oil pipe is heated more evenly, and the heating effect is improved.

The utility model discloses a gasoline engine capable of being efficiently started in an ultralow-temperature environment. The gasoline engine comprises a gasoline engine body, an air inlet chamber arranged at the top end of the gasoline engine body, an air inlet pipeline connected to one side of the gasoline engine body and an air inlet pipe base arranged at the top end of the air inlet pipeline and communicated with the air inlet chamber. A preheating ring sleeve is mounted on the surface of the air inlet pipe seat in a sleeving manner, an annular inner groove is formed in the inner wall of the preheating ring sleeve, and an electric heating ring is mounted on the inner side of the annular inner groove; a heat conduction structure corresponding to the electric heating ring is arranged on the air inlet pipe seat; a gasoline engine in the prior art is improved and optimized, the preheating electric heating ring is designed and integrated on the air inlet pipe seat of the gasoline engine, and the preheating electric heating ring is ingeniously matched with a heat conduction structure in the pipe seat, so that the purpose of preheating air passing through the air inlet pipe seat is achieved, the temperature of the air entering an air cylinder is effectively increased, and the service life of the air cylinder is prolonged. The starting performance and efficiency of the gasoline engine in the ultralow-temperature environment can be remarkably improved, fuel oil atomization is effectively promoted, and the ignition success rate is increased.

A vehicle preconditioning system (110) is disclosed. The vehicle preconditioning system (110) is capable of automatically preconditioning engine coolant in a work vehicle, the vehicle preconditioning system comprising: a coolant heating device (52) coupled to an engine (16) of the work vehicle via a supply line (50) and a return line (54), wherein engine coolant circulates between the coolant heating device (52) and the engine (16) via the lines (50, 54);and a coolant heater start control device (350), comprising a start module (360) in operational communication with the coolant heater (52), a processor device (352), a persistent storage device (354) in operational communication with the processor device (352), and vehicle preconditioning logic stored in the persistent storage device (354), wherein the processor device (352) is capable of executing the vehicle preconditioning logic to automatically control the coolant heater (52) to initiate the heating of the engine coolant. A method with such a vehicle preconditioning system (110) is further disclosed.

The application provides a cooling water path structure of a motorcycle engine and belongs to the technical field of motorcycles. The technical problem of insufficient reliability of the existing motorcycle engine water path connection structure is solved. The motorcycle engine comprises a cylinder body and a cylinder head, the cylinder head is connected with a water pump shell, the water pump shell is provided with a water inlet and a water outlet which are communicated with a pump cavity, the cylinder head is provided with a mounting cavity for accommodating a thermostat, the cooling water path structure comprises a water jacket I located in the cylinder head and a water jacket II located in the cylinder body, the water jacket I and the water jacket II are communicated, the cooling water path structure further comprises a small circulation flow channel located in the cylinder head and directly communicated with one end of the mounting cavity, the water inlet is in butt joint communication with the other end port of the small circulation flow channel, the cylinder head is further provided with a liquid inlet flow channel which is separated from the water jacket I, one end port of the liquid inlet flow channel is located at the joint of the cylinder body and the cylinder head and is communicated with the water jacket II, and the other end port of the liquid inlet flow channel is in butt joint communication with the water outlet. The application can effectively improve the water path connection reliability.

The utility model provides waste heat utilization equipment, liquid tank equipment and engine equipment, and relates to the technical field of waste heat utilization. According to the device, a recovery pipeline is installed outside a liquid tank, the recovery pipeline is wrapped with heat insulation cotton, and the recovery pipeline is used for recovering high-temperature exhaust gas generated in the operation process of engine equipment; the heating branch is installed inside the liquid tank, an air inlet of the heating branch is located at the bottom end of the liquid tank, and an air outlet of the heating branch is located at the top end of the liquid tank; an air inlet of the heating branch is communicated with an exhaust port of the recovery pipeline, so that high-temperature exhaust enters the heating branch through the recovery pipeline; the heating branch is used for heating liquid stored in the liquid tank through high-temperature exhaust. According to the equipment, the problem that waste gas heat generated in the combustion process cannot be fully utilized is solved.

The invention provides a carbon deposition cleaning control method and a parking heater, and the method comprises the steps: obtaining the operation data of the parking heater; the operation data comprises at least one of the following items: the temperature of a heat exchanger of the parking heater, the temperature of tail gas, the resistance value of an ignition plug in the parking heater, the operation duration of the parking heater at each operation gear, the starting times of the parking heater and the ignition failure times of the parking heater; comparing the operation data with a preset threshold value corresponding to the operation data, and determining whether to execute a carbon deposition cleaning operation or not; and in response to the fact that the carbon deposition cleaning operation is determined to be executed, the rotating speed of a draught fan in the parking heater is increased to the preset rotating speed, and / or the oil pumping frequency of the parking heater is increased to the preset frequency.

The invention discloses an engine starting control method, device and equipment and a storage medium. Comprising the steps that after an electronic control unit receives a starting signal, the air inlet temperature monitored in real time is obtained; whether the air inlet temperature is smaller than a preset first temperature threshold value or not is judged; under the condition that the air inlet temperature is smaller than the first temperature threshold value, an air inlet heating relay is controlled to be closed, and air inlet heating is conducted; and the air inlet temperature is monitored in real time, under the condition that the air inlet temperature meets the preset starting heating condition, the air inlet heating relay is controlled to be switched off, and the engine is controlled to be started. According to the engine starting control scheme, the starting process and the air inlet heating process are linked, whether air inlet heating is needed or not is judged before starting, the starting success rate in the low-temperature environment is increased by monitoring the air inlet temperature and the temperature rise rate in real time and dynamically deciding the heating and starting time, and meanwhile energy waste and equipment damage are avoided.

A method of pressurizing a closed-cycle engine includes performing a non-steady state operation in which a working fluid flows to or from a pressurized tank: i) to or from a plurality of sumps defined by respective ones of a plurality of cylinder-piston assemblies of the closed-cycle engine; or ii) to or from one or more air bearings associated with each one of the plurality of the cylinder-piston assemblies; or iii) both and performing, before and / or after performing the non-steady state operation, a steady-state operation in which the working fluid flows through the plurality of sumps and the one or more air bearings along a steady-state loop that is fluidly decoupled from the pressurized tank.