711 results about "Fuel pump" patented technology

The invention relates to the technical field of test bed operation monitoring, in particular to a fuel pump test bed operation monitoring method and system. The method comprises the following steps: acquiring monitoring time sequence data of operation of a fuel pump test bed, performing feature extraction, constructing a coupling prediction model of a space-time diagram attention network-unscented Kalman filter, and predicting a process noise covariance matrix and a measurement noise covariance matrix according to the coupling prediction model, and performing state estimation by using an unscented Kalman filter to obtain vector posterior probability distribution, constructing a fault evolution trajectory manifold, calculating a mahalanobis distance between the vector posterior probability distribution and the fault evolution trajectory manifold, and taking the mahalanobis distance as a monitoring index. According to the scheme of the invention, the deep features which can better reflect the inherent nonlinear and complex dynamic characteristics of the system can be extracted from the multi-source data, the estimation accuracy of the filter on the potential health state of the system is improved, and the defects that model parameters are fixed and gradual change faults are difficult to capture in a traditional method are overcome.

An aircraft fuel system includes a fuel tank, a fuel pump configured to receive a fuel flow from the fuel tank via a fuel supply line. The fuel system further includes a tap fluidly coupled to an outlet of the fuel pump, at least one generator or permanent magnet machine fluidly connected to the fuel pump via the tap, and the tap is configured to deliver fuel to the at least one generator or permanent magnet machine. The fuel system further includes a gearbox mechanically connected to the at least one generator or permanent magnet machine.

The invention belongs to the field of target drone fuel oil systems, and particularly relates to a self-adaptive supersonic speed target drone fuel oil system and a control method thereof. The system comprises a machine body oil tank, a first electromagnetic valve, an overflow valve, a pressurization oil tank, a fuel pump, an engine pump, a monitoring module and a control module. The body fuel tank comprises a main fuel tank and an auxiliary fuel tank which are arranged in a fuel tank in the middle of the target drone body and located in front of and behind the theoretical mass center of the target drone respectively. The pressurization oil tank is additionally arranged in the fuel oil cabin, fuel oil in the engine body oil tank enters the pressurization oil tank for pressure maintaining after being pressurized by the fuel oil pump, and then oil is supplied to the engine from the pressurization oil tank, so that stable oil supply to the engine is achieved by establishing a local pressure environment instead of a large pressure environment of the whole fuel oil cabin, and therefore when a fuel oil system works, the fuel oil can be stably supplied to the engine. The oil supply flow and pressure are controlled in a closed-loop mode in real time through the control system according to the engine state.

Disclosed in the present invention is an integrated reforming power generation test system having wide-range fuel adaptability, comprising a fuel supply subsystem, a catalytic reforming subsystem, a hydrogen purification subsystem, a power generation subsystem, and a test monitoring subsystem. A fuel pump and a fuel delivery pump are connected to a water-gas shift reactor by means of an evaporator and a reformer, the water-gas shift reactor is connected to a pressure swing adsorption device by means of a first gas-liquid separator, the pressure swing adsorption device is connected to a fuel cell stack by means of a hydrogen buffer tank, and a gas chromatograph is connected to the reformer by means of a third gas-liquid separator and to the water-gas shift reactor by means of a second gas-liquid separator. By using a variety of fuel resources to produce electricity, the present invention breaks through the limitation of the scope of traditional single-fuel reforming power generation systems, ensures the reliability of electricity supply, gets rid of the dependence on specific fuels, enhances regional energy safety, and improves the flexibility of energy supply.

The invention relates to the technical field of generator fuel pump control, in particular to an energy-saving generator fuel pump optimization method and system. Comprises: continuously collecting operation parameters of a generator system, and determining whether the generator system is in a stable operation condition; after the stable operation working condition is judged, perturbation testing is executed, and the actual output pressure and the actual fuel flow of the fuel pump are obtained; calculating the performance deviation of the fuel pump, and carrying out trend analysis to identify continuous performance drift; when the trend analysis shows that continuous performance drifting exists, self-adaptive correction is conducted on the fuel pump control basis to obtain the corrected fuel pump control basis; and the corrected fuel pump control basis is applied to control operation of the fuel pump. The problems that hidden energy consumption is increased and equipment failure risks are caused when an existing generator fuel pump control system is in the face of tiny changes of fuel physical attributes and gradual degradation of the performance of a fuel pump are solved.

An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump housing may include an integral vapor trap.

Disclosed is an anti-siphonage and anti-overflow fuel pump structure. The anti-siphonage and anti-overflow fuel pump structure includes a fuel pump, a fuel inlet hose, a main flow channel assembly, a control box, an exhaust and backflow channel assembly, and a fuel outlet hose, where the control box includes a housing, a battery assembly, and a control board; the main flow channel assembly includes an input channel, an output channel, an exhaust port, and a seal port; and the exhaust and backflow channel assembly includes an exhaust valve, a pipeline joint, an exhaust pipe, and an exhaust and backflow channel, the exhaust valve is arranged inside the exhaust port, the pipeline joint is arranged above the exhaust valve, one end of the exhaust pipe is connected to the pipeline joint, and the other end of the exhaust pipe is connected to the exhaust and backflow channel.

The invention discloses centering, positioning and welding equipment for motorcycle fuel pump manufacturing, and relates to the technical field of welding equipment. The centering, positioning and welding equipment for motorcycle fuel pump manufacturing comprises a supporting bottom plate, a first support, a welding shell, a centering device, a conveying device, a welding device, a discharging port and a discharging device, firstly, the supporting bottom plate provides a stable foundation, the first support is installed on the supporting bottom plate, and extra stability and supporting force are provided for the whole structure; the welding shell protects sparks and smoke generated in the welding process, and safety and cleanness of the operation environment are guaranteed. Besides, the centering device is the core technology of the whole equipment, the conveying device is responsible for conveying the parts to the welding position in order, and high-precision welding operation can be executed under calibration of the centering device. The equipment not only improves the production efficiency, but also improves the reliability and precision of products.

A propulsion system comprises a propulsive hydrogen-burning gas turbine engine, a first tank storing liquid hydrogen with an ullage and a first fuel line including a fuel pump and a vaporiser, the first fuel line providing gaseous hydrogen to the engine during operation of the system. A second tank storing gaseous hydrogen is coupled by a second fuel line to the first fuel line at a position thereon between the vaporiser and the engine, providing for engine start-up (when the vaporiser is inoperative) and power-boosting during operation of the system. A duct connects gaseous hydrogen within the second tank to the ullage in the first tank in order maintain pressure in the first tank as liquid hydrogen within it is depleted, preventing cavitation of liquid hydrogen within the fuel pump.

The invention discloses a joint simulation solving method for a fuel oil thermal management system, and the method comprises the steps: determining a heat sink model through a thermophysical parameter iteration process on an Aspen Plus platform, and calculating the thermophysical parameters of each heat sink along with the changes of temperature and pressure; in the MATLAB / Simulink platform, the storage temperature T0 and the storage pressure P0 are determined according to the physical property of the fuel oil, the mass flow of the fuel oil is solved in a circulating mode through the heat source temperature iteration process, and the heat absorbed by the fuel oil at the FADEC system, the fuel oil pump, the airborne equipment and the engine heat source and the outlet fuel oil temperature are calculated in combination with a heat source module; the heat exchanger adjusts the flow of the consumable heat sink through the heat sink flow iteration process to reduce the fuel oil to the initial temperature T0; the joint simulation platform finally solves various performance evaluation indexes of the system according to feedback results of thermophysical property parameter iteration, heat source temperature iteration and heat sink flow iteration, the coupling mechanism between the heat exchanger module and the heat sink is clarified, and the problems that a traditional modeling method is single and poor in accuracy are solved.

A seaplane float frame apparatus with extra fuel storage, and a method of installing, comprising: 1) a middle section housing at least one auxiliary fuel storage tank; and 2) two opposing side panels affixed to the middle section, extending outward from about 45-60-degrees from the parallel, each of the two opposing side panels comprising a bottom flat edge fit-able to a float (e.g., carbon composite). The middle section further comprises a fuel pump and a fuel line attached to the auxiliary fuel storage tank(s) and to a main fuel tank within an airplane fuselage-engine. Electrical components enable the pilot, or automatedly as needed, to pump fuel from the frame's tanks. The two opposing side panels comprise triangular shaped cutouts to reduce the float frame's weight and drag, and a built-in steps, a bar, and non-skid coating on the floats to assist in climbing safely into / out of the cockpit.

The invention belongs to the technical field of aircraft engine accessory casing structural design, and particularly relates to an aircraft engine accessory casing fuel pump gear shaft spline bearing lubricating structure which comprises an oil passing shaft and an adapter ring. The oil passing shaft is a hollow shaft and is arranged in the end, provided with the gear, of the gear shaft, the end of the gear shaft is sleeved with a bearing, the bearing is located on the outer side of the gear, and a spline is arranged in the other end of the gear shaft. The gear shaft is provided with a plurality of bearing lubricating channels distributed in the circumferential direction, all the bearing lubricating channels are communicated with the portion between the bearing and the gear, and all the bearing lubricating channels incline towards the bearing. The adapter ring sleeves the oil passing shaft and is connected to the inner side of the gear shaft; an annular oil collecting groove is formed in the end portion of the end, facing the spline, of the adapter ring, an annular oil collecting cavity is formed between the adapter ring and the gear shaft, the annular oil collecting groove and the annular oil collecting cavity are communicated through a plurality of oil through holes distributed in the axial direction, and the annular oil collecting cavity is communicated with the bearing lubricating channels.

The invention belongs to the technical field of internal combustion engine power devices, and discloses a double-piston mechanism for an internal combustion engine, which comprises a cylinder body, and more than one cylinder is arranged in the cylinder body; an air inlet seat and an air outlet seat are installed on the upper portion and the lower portion of the cylinder body respectively, an air inlet pipe and an air outlet pipe are arranged in the air inlet seat and the air outlet seat respectively, and an air inlet channel and an air outlet channel are arranged in the air inlet pipe and the air outlet pipe respectively. A control device for gas distribution is arranged at the corresponding position of each cylinder; a high-pressure oil pump is arranged outside the cylinder body, and the high-pressure oil pump is communicated with the oil sprayer through a high-pressure oil pipe; a piston assembly I and a piston assembly II are symmetrically arranged in each cylinder body, and a bevel gear set I and a bevel gear set II which are matched with the piston assembly I and the piston assembly II to transmit power are further arranged in each cylinder body. The power performance of the internal combustion engine can be improved through the two piston assemblies, the device is small in size and light in weight, and single-machine fuel consumption and operation cost are effectively reduced.

An armature for use in an armature assembly associated with actuation of valves, such as for fuel injectors, fuel cells and / or fuel pumps, is disclosed. The armature includes a body having: a first end having a flange; and a shaft extending from the flange to the second end of the body. The second end portion includes a recessed surface configured to reduce stress on the armature upon an impact. The armature may be made of a low strength material of high permeability, thereby reducing remanence in the armature, assisting in demagnetization release, and reducing delay at the end of ejection.

A brushless fuel pump comprises a machine shell, a pump assembly and an upper end cover are arranged at the two ends of the machine shell, riveting rings are integrally arranged at the two ends of the machine shell, the machine shell is fixedly connected with the pump assembly and the upper end cover through the riveting rings in a pressing riveting mode, the connecting mode is simple and reliable, the structural strength is high, and the sealing performance and integrity of a pump body in the high-pressure working environment can be effectively guaranteed; a brushless motor is arranged in an inner cavity of the machine shell and comprises a support, a rotor is arranged in the support in a rotating mode, a plurality of inner stator punching sheets with winding wires are arranged on the side wall of the inner side of the support, the outer side of the support is sleeved with outer stator punching sheets, and the outer stator punching sheets are arranged on the outer side of the outer stator punching sheets. A structure that an inner stator punching sheet and an outer stator punching sheet are combined is adopted, optimization of a magnetic field and improvement of motor torque and efficiency are facilitated, the pump assembly comprises a wheel shell, an impeller connected with a rotor is arranged in the wheel shell, an oil inlet is further formed in the wheel shell, and an oil outlet communicated with an inner cavity of the support is formed in the upper end cover.

The invention relates to an oil supply control system, an oil supply control method and an oil supply control device. The method is applied to the vehicle, and the system comprises a fuel pump arranged on a fuel tank of the vehicle and communicated with an engine of the vehicle through a fuel supply pipeline; the first pressure sensor is arranged on the oil supply pipeline and is configured to detect pressure data of the oil supply pipeline; and the controller is connected with the first pressure sensor and the fuel pump and is configured to determine target pressure data corresponding to the current working condition of the engine and adjust the power supply voltage of the fuel pump based on the first detection value of the first pressure sensor and the target pressure data. According to the technical scheme, on one hand, noise of the fuel pump when the engine is in the low-load state can be reduced, and on the other hand, power consumption of the fuel pump can be reduced.

A dual fuel system (24) includes: a first pressurized fuel reservoir (26); a first fuel pump (28) fluidly connected to the first pressurized fuel reservoir; a second pressurized fuel reservoir (30); and a second fuel pump (32) including a pump outlet (34) fluidly connected to the second pressurized fuel reservoir, a pumping chamber (36), an actuating fluid inlet (38) fluidly connected to at least one of the first fuel pump or the first pressurized fuel reservoir, and at least one pumping element (40). The first fuel pump may at least sometimes have a surplus capacity to provide pressurized first fuel for actuating the second fuel pump. The at least one pumping element may include a supercharger or step-down plunger such that a flow rate of the second pressurized fuel from the second fuel pump differs from a flow rate of the first pressurized fuel from the first fuel pump as an actuating fluid for the second fuel pump. Related apparatus and methods are also disclosed.

A dual fuel system includes a first fuel supply of a first fuel, a second fuel supply of a second fuel, and a variable-output fuel pump. A fuel injector in the dual fuel system includes a combined-fuel outlet passage, a nozzle check movable to open and close the combined-fuel outlet passage to nozzle outlets, and a check valve positioned at least partially in a first fuel passage connected to the first fuel supply by way of the variable-output fuel pump. The first fuel may include a compression-ignition fuel and the second fuel may include an alcohol fuel. Varying output of the fuel pump during an off-cycle of a cam actuating a plunger in the fuel injector meters the first fuel to the fuel injector for forming a fuel charge for injection. Related apparatus and methodology is also disclosed.

The utility model discloses a semi-automatic supporting rod check ring pressing tool, which relates to the technical field of fuel pumps and comprises an assembly plate and a top plate, the top plate is positioned at the top end of the assembly plate, and a support is arranged between the assembly plate and the top plate. A first telescopic air cylinder is arranged at the top end of the top plate, and the output end of the first telescopic air cylinder penetrates through the bottom end of the top plate to be connected with a pressing plate. The device has the beneficial effects that the vibration tray can automatically convey the check ring, the check ring falls into the guide groove through the trough, and the third telescopic cylinder drives the push rod to push the check ring to a designated position; and meanwhile, the first telescopic air cylinder pushes the pressing plate, the second telescopic air cylinder drives the movable clamping plate to cooperatively complete retainer ring pressing and supporting rod clamping actions, the assembling efficiency is high, compared with manual assembling, the assembling time is greatly shortened, and the requirement of large-scale production for efficiency is met.

The invention relates to a method for controlling an electric drive chain (1) of an aircraft fuel pump, the method comprising: receiving (202) a pair of speed and mechanical torque setpoints for an electric motor (2), receiving (204) a maximum voltage setpoint by a direct current high voltage power supply (3), calculating (206) a minimum voltage required at an input of an electric inverter (5) for the pair of setpoints, and controlling the electric drive chain (1) of the aircraft fuel pump. Calculating (208) the loss in the electric drive chain (1) in a voltage range between the minimum voltage and a maximum voltage, the maximum voltage corresponding to said maximum voltage setpoint, selecting (210) an optimal voltage to be applied to the input of the electric inverter (5), the optimal voltage corresponding to the voltage with the lowest loss in the electric drive chain (1), and applying the optimal voltage to the input of the electric inverter (5). And calculating (212) a duty cycle to be applied to the buck converter (6) as a function of the selected optimal voltage.

The fuel pump guide rod press-fitting device comprises a bottom plate, an upper cover seat is arranged on the bottom plate in a sliding mode, an upper cover groove used for containing an upper cover is formed in the upper cover seat, a guide rod seat and a lining seat are arranged on the side, in the sliding direction of the upper cover seat, of the bottom plate, and a first driving cylinder is arranged on the side, away from the guide rod seat, of the lining seat of the bottom plate. A push plate is arranged at the end of a piston rod of the first driving cylinder, a plurality of ejector rods matched with the guide rods are arranged on the push plate, a filter screen groove used for bearing the filter screen frame is formed in the push plate, and a second driving cylinder is arranged on the side, away from the guide rod base, of the upper cover base of the bottom plate. The ejector rod and the filter screen frame are simultaneously driven through the first driving cylinder, synchronous operation of pressing the guide rod into the upper cover and pressing the filter screen frame into the lining is achieved, press fitting of the breather valve is synchronously completed through the second driving cylinder, three independent procedures are integrated on the same equipment to be synchronously completed, the assembling efficiency and the assembling precision are greatly improved, the structure is compact, operation is convenient and fast, and cost is low. The positioning is reliable.

The automobile fuel pump assembly comprises a flange plate, an oil pump, an oil storage barrel and an oil level indicator, an oil inlet pipe, an oil outlet pipe and an electric plug are arranged on the flange plate, a first mounting cavity and a second mounting cavity are formed in the oil storage barrel, the oil pump penetrates through the first mounting cavity, and a pressure regulating valve penetrates through the second mounting cavity; a control box is further arranged on the end face of the flange plate, an oil pump control panel is arranged in the control box, the pressure regulating valve is arranged on the oil storage barrel, fuel oil is input into the oil storage barrel from the oil inlet pipe, the pressure regulating valve is arranged on the oil storage barrel, the fuel oil is input into the oil storage barrel from the oil inlet pipe, and when the oil inlet pressure is large, the pressure regulating valve can release the overpressure fuel oil into the oil tank. When the oil pressure in the oil tank is large, the pressure regulating valve can also reduce the pressure in the oil tank, double adjustment of the oil pressure of the oil tank and the oil inlet pressure is achieved, and meanwhile the oil pump control panel can control the rotating speed of the oil pump, so that the oil outlet amount is adjusted.

This can suppress the occurrence of water hammer within the cylinder. [Solution] The control device 90 of the internal combustion engine 1 controls the internal combustion engine 1, which includes a fuel pump 16 that pressurizes fuel and an injector 15 that supplies fuel into the cylinder 4 by injecting the fuel pressurized from the fuel pump 16. The control device 90 is configured to stop the operation of the fuel pump 16 when the degree of discrepancy between the output timing of a signal output from a knocking sensor 48, which is a sensor that detects the vibration state of the internal combustion engine 1, and the output timing of an injection command signal that drives the injector 15, is greater than a predetermined degree.

The utility model provides a kind of high-efficiency heating electromagnetic automobile fuel pump, including pump shell, piston core and electromagnetic coil winding component being arranged in pump shell, electromagnetic coil winding component includes coil holder and enameled wire around the outside of coil holder, enameled wire is directly around the outside of winding tube piece of coil holder or indirectly around the outside of winding tube piece of coil holder by insulating spacer, it further includes several winding assembly, winding assembly is arranged on winding tube piece and can increase the winding outer diameter of winding tube piece, the outer periphery of winding tube piece is provided with several positioning components distributed in the length direction of winding tube piece, and positioning component is used to quickly limit the assembly position of winding assembly on winding tube piece.The utility model has the beneficial effect that the position of the winding space of enameled wire can be increased more, so that the overall winding number of turns is more, the enameled wire length is longer, a stronger electromagnetic force can be obtained, so that the heating effect is faster.

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.

The utility model relates to the technical field of automobile part positioning, and discloses an angle positioning tool for an oil inlet pipe joint of a high-pressure fuel pump, which comprises a tool bottom plate, the bottom edge of a positioning side plate is fixedly connected with the tool bottom plate, and the surface of the positioning side plate is provided with an avoiding through hole along the thickness direction. A plurality of positioning pins matched with positioning holes in the end face of the fuel pump are arranged on the surface of the positioning side plate around the avoiding through hole. The push-pull type pressing device is installed on the surface of the tool bottom plate, the push-pull type pressing device and the positioning side plate are oppositely arranged to form a limiting area of the fuel pump, and the push-pull type pressing device is used for selectively applying clamping thrust to the fuel pump to the limiting area; the limiting rod is installed on the surface, close to the limiting area, of the tool bottom plate and used for positioning before the fuel pump pipe joint is tightened according to the preset angle, accurate positioning and fixing of a fuel pump are achieved through the tool, displacement or loosening of the fuel inlet pipe joint when the fuel inlet pipe joint is greatly impacted by the torque of a tightening gun is avoided, and the percent of pass of installation of the fuel inlet pipe joint is guaranteed.

The invention relates to the technical field of flow control, in particular to a flow control method, system and equipment applied to a fuel pump. According to the method, the accelerator demand degree at each moment is obtained, and the accelerator delay degree is obtained according to the fluctuation degree of the accelerator demand degree and the deviation degree of the accelerator demand degree in the neighborhood time period of each moment; according to the change amplitude of the same working condition parameters in the neighborhood time period of each moment and the accelerator delay degree, a transmission value of each moment is obtained; and controlling the fuel oil flow of a fuel oil pump of the automobile at each moment according to the throttle valve opening degree, the accelerator delay degree and the transmission value at each moment. According to the method, quick response can be achieved when the accelerator changes instantaneously, traditional pulse width modulation duty ratio adjustment lag is remarkably reduced, and the motor rotating speed of the fuel pump is better matched with the required flow. And the flow control effect of the fuel pump is effectively improved.

The invention relates to a fuel pump comprising: a pump body (1); a bushing (4) accommodated in a recess (10) in the pump body (1), the recess (10) opening at one end toward the outside of the pump body (1) and at the other end into a compression chamber (2); and a piston (3) translationally movable in the bushing (4) for compressing fuel in the compression chamber (2), the bushing (4) being tightly mounted in the recess (10) by means of two bulges (41, 42) protruding from a cylindrical outer surface of the bushing (4), the pump being characterized in that a first of the bulges (41) at a first end (43) of the bushing (4) on the compression chamber (2) side is located at a distance from the end of the bushing (4) of between 20% and 40% of the length of the bushing (4).

The automobile oil pump assembly comprises a flange plate and an oil pump, an oil inlet pipe, an oil outlet pipe and an electric plug are arranged on the flange plate, and the automobile oil pump assembly is characterized in that a control box is further arranged on the end face of the flange plate, and an oil pump control module electrically connected with the electric plug is arranged in the control box; the electric signals are transmitted into the oil pump control module in the control box through the electric plug, and the oil pump control module identifies and processes the electric signals and then adjusts the rotating speed of the oil pump, so that the oil pumping amount of the oil pump is adjusted. After the oil pump control module receives the signal, the rotating speed of the oil pump is adjusted through pulse width modulation current, the running efficiency of the oil pump can be controlled in real time according to the actual working condition of the engine, the oil pumping amount of the fuel pump can be adjusted in real time according to the actual working condition of the engine, and the oil pumping amount adjustment is more convenient.

The invention discloses a hybrid power turboshaft engine and a working method, the engine comprises a core machine system and a fuel cell power supply system, and the core machine system comprises an air inlet channel, an air compressor, a main combustion chamber, a gas turbine and a power turbine; the fuel cell power supply system comprises a liquid ammonia storage tank, a fuel pump, a liquid ammonia decomposer, a pressure reducing valve, a heat exchanger and a proton exchange membrane fuel cell. According to the invention, a hybrid power form of combining a turbine power system and a fuel cell power system is adopted, so that the output power of the turboshaft engine is ensured, and meanwhile, the proton exchange membrane fuel cell provides electric energy for airborne electric equipment of the engine; the problems that the electric power requirement of an existing turboshaft engine is gradually improved, power of storage batteries such as lithium batteries is insufficient, and electric power is difficult to extract from a power turbine are solved. Meanwhile, the ammonia working medium serves as power generation fuel, the energy conversion efficiency of the aviation turboshaft engine is improved, and energy consumption is reduced.