172 results about "Motor fuel" patented technology

The invention relates to the technical field of new energy vehicles, in particular to a multi-working-condition energy management method and system for a hybrid chariot, and the method comprises the steps: determining a corresponding working condition weight coefficient through obtaining the altitude, environment temperature and road condition data in real time, and the real-time working parameters of three power sources, namely an engine, a fuel cell and a lithium battery, so as to achieve the multi-working-condition energy management of the hybrid chariot; the system constructs a multi-objective optimization model based on the data to realize comprehensive fuel consumption minimization, lithium battery SOC balance and lithium battery life protection, and the model comprises establishment of a power source efficiency parameter mapping relation, determination of a corresponding relation between lithium battery power and cycle life, and construction of a membership function of an optimization objective. By adopting a method of combining Pareto local optimization and fuzzy evaluation, the optimal power distribution proportion among the engine, the fuel cell and the lithium battery is calculated, the overall efficiency of the hybrid chariot is effectively improved, and the service life of the hybrid chariot is effectively prolonged.

A gas turbine engine, comprising a compressor section, combustion section, and turbine section in serial flow arrangement, with the combustion section comprising: a combustor liner at least partially defining a combustion chamber; a wall coupled to the combustor liner; a first fuel supply to supply a first fuel; a gaseous fuel supply to supply a gaseous hydrogen fuel; and a fuel nozzle assembly coupled to the wall and fluidly coupled to the first fuel supply and the gaseous hydrogen fuel supply, the fuel nozzle assembly comprising: a main mixer; and a fuel nozzle comprising an outer wall defining a pilot channel and an outer wall fuel orifice to emit at least one of the first fuel or the gaseous fuel radially outward into the main mixer; and a secondary mixer disposed in the pilot channel.

The present invention relates to an ammonia recovery / discharge system and a control method therefor. The ammonia recovery / discharge system of the present invention is designed for a ship using ammonia as fuel and comprises: an ammonia tank; an engine; a fuel supply unit; a fuel recovery unit; an air supply line; an air discharge line; and a working fluid circulation unit, wherein the working fluid circulation unit comprises an ejector that supplies high-pressure working fluid to circulate air or ammonia in the working fluid circulation unit.

The invention relates to the technical field of ship ammonia fuel power systems, in particular to an ammonia fuel waste heat and Kalina cycle coupling utilization system which comprises an ammonia fuel supply system and a Kalina cycle system, the ammonia fuel supply system comprises a fuel tank and an engine, and low-temperature ammonia fuel in the fuel tank is conveyed to the engine through a supply pipe to do work; the Kalina circulating system comprises a separator, a steam turbine and a generator, ammonia gas in the ammonia fuel supply system is mixed with exhaust gas through an ammonia gas pipe to form an ammonia water solution, and the ammonia water solution sequentially flows through a second heat exchanger and a third heat exchanger through a pipeline and then enters the separator; ammonia steam is separated from the separator to drive the steam turbine to do work and generate electricity through the generator, and exhaust gas generated after the steam turbine does work is mixed with ammonia gas in the ammonia fuel supply system; high-temperature smoke generated after the engine does work is exhausted after heat exchange through the third heat exchanger through the smoke exhaust pipe, and surplus fuel after the engine does work is subjected to heat exchange through the second heat exchanger through the liquid return pipe and then flows back to the fuel tank.

The invention discloses an agricultural machinery operation carbon emission measuring and calculating method based on operation parameters, and belongs to the technical field of agricultural machinery carbon emission monitoring and evaluation. The problem of inaccurate measurement and calculation of the carbon emission of agricultural machinery operation caused by changeable existing operation conditions is solved. The method comprises the steps that firstly, the output power of an engine is calculated, a fuel consumption rate model is established through the output power, the fuel density of the engine and the combustion efficiency of the engine, and instantaneous fuel consumption is obtained; the real-time carbon emission rate is obtained in combination with the instantaneous fuel consumption; calculating a load factor according to the advancing speed, the slip rate and the operation soil parameters of the agricultural machine, and obtaining a load correction factor by using the load factor; calculating an environment temperature correction factor and an altitude correction factor according to the agricultural machinery operation environment parameters and the altitude of the operation area; and correcting the carbon emission rate by using three correction factors, calculating the work consumed by the operation, and calculating the comprehensive carbon emission of the agricultural machinery operation in combination with the corrected carbon emission rate. The method is suitable for agricultural machinery operation carbon emission calculation.

The present invention provides a method, device, apparatus, and readable storage medium for distributing fuel in an ammonia-diesel engine, comprising: determining an engine fuel distribution mode when the engine is at a preset time; determining the required torques of diesel and ammonia at the preset time based on the engine fuel distribution mode; determining the diesel fuel quantity based on the required torque, diesel thermal efficiency, diesel calorific value, and engine displacement at the preset time; and determining the ammonia quantity based on the required torque, ammonia thermal efficiency, ammonia calorific value, and engine displacement at the preset time. This invention can effectively reduce the large amount of carbon emissions generated by diesel combustion, while also effectively addressing the problems of difficult combustion and insufficient reaction of pure ammonia fuel, thereby improving the thermal efficiency and fuel economy of the engine.

The invention discloses a fuel injection control method, device and equipment and a medium. The method comprises the steps that the injection back pressure during fuel injection of an engine is determined according to working condition parameters of the engine; the actual injection pressure is determined according to the injection demand pressure and the injection back pressure during fuel injection of the engine; according to the method, by introducing a dynamic compensation mechanism of the injection back pressure, the effective injection pressure difference can be accurately reflected, the control precision and the system robustness under the working condition of the small oil amount are remarkably improved, and the control precision and the system robustness under the working condition of the small oil amount are improved. And in an engine platform upgrading or multi-mode operation scene, whole machine rack calibration does not need to be carried out again, the development cost is greatly reduced, and the adaptability and engineering efficiency of fuel injection control are improved.

The utility model discloses a high-power pure vaporizer, and belongs to the technical field of fuel supply of gas engines. The engine comprises a body, a throat pipe, a throttle valve, a variable frequency motor, an air inlet cavity and a multi-channel air inlet structure (a high-speed air inlet channel, a medium-speed air inlet channel and a low-speed air inlet channel). Through the caliber gradient design (high speed > medium speed > low speed) of each channel and outlet position optimization (high speed is in the middle, the medium speed is close to the lower part and the low speed is close to the upper part), and in combination with a throttle valve and a limiting adjusting mechanism driven by a variable frequency motor, dynamic adjustment of gas flow under different working conditions is realized, the mixing efficiency is improved, the energy consumption is reduced, and the emission standard is met.

The invention discloses a fuel mixing and supplying mechanism of a dual-fuel engine, and relates to the field of fuel mixing, the fuel mixing and supplying mechanism comprises a cylinder bridge, a connecting rod, an air compression assembly and a cylinder assembly, the air compression assembly comprises an air compression outer barrel, an air compression inner barrel, an air compression piston and an air supply mechanism, and the cylinder assembly comprises a cylinder piston, an air cylinder sleeve and an oil pumping mechanism. When the air compression outer barrel moves along with the air cylinder bridge, the air supply mechanism sucks air and fuel gas in a self-suction mode through the pressure difference of a cavity in the air compression process, the air and the fuel gas are mixed in proportion, the mixed gas is conveyed into a combustion chamber of the air cylinder sleeve, and quantitative supply of the mixed gas can be achieved without additional supercharging equipment; fuel oil is pumped into the air cylinder sleeve through the oil pumping mechanism, the gas supply mechanism feeds mixed gas of fuel gas and air in a self-suction mode for layering or homogeneous mixing, the dual-fuel supply system can flexibly adjust the proportion of the fuel gas and the fuel oil according to the load working condition, the combustion process is optimized, and emission of harmful gas is reduced while power output is guaranteed.

Engines can utilize combustors to combust fuel to drive the engine. Fuel nozzle assemblies can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assemblies can include a swirler and a fuel nozzle to supply a mixture of fuel and air for combustion. Changing the geometry of the swirler can provide improved air supply, which can improve efficiency and flame control.

The invention provides a failure determination device and a failure determination method. A fuel supply system is provided with a hydrogen engine, a fuel tank, hydrogen piping, and first and second shutoff valves that serve as shutoff valves for shutting off hydrogen gas. When an operation for requesting to stop the hydrogen engine is performed, the malfunction determination device executes a malfunction determination routine in which, after the shut-off valve is closed, the decrease speed of the pressure of hydrogen gas downstream of the shut-off valve is observed in a state in which the hydrogen engine is continued to operate, and when the decrease speed is slower, it is determined that the shut-off valve is not normally closed. When an operation requiring operation of the hydrogen engine is performed during execution of the failure determination routine, the failure determination device opens the shut-off valve and stops the failure determination routine in a state in which the hydrogen engine continues to operate.

A sea-going cargo carrier having a primary driving-mechanism and one or more back-up engines comprises liquefied hydrogen (LH2) tanks 10, hydrogen boil-off gas (BOG) compressors 18, compressed hydrogen containers 22 to store the compressed hydrogen, and pipework 24 to supply the compressed hydrogen to the back-up engines. The compressors compress the BOG from the liquefied hydrogen tanks to provide compressed hydrogen. The primary driving mechanism can be one or more of an internal combustion engine, a hydrocarbon-fuel engine, or one or more sails. The cargo carrier can be a liquefied gas carrier or a goods carrier. When the cargo carrier is a liquefied hydrogen carrier, it can have liquefied hydrogen tanks which are able to provide hydrogen BOG as a back-up engine fuel source. The BOG compressors can compress the BOG from the liquefied hydrogen tanks to a pressure above 200 barg. The compressed hydrogen containers can be isotainers.

An engine may utilize a burner to combust fuel to drive the engine. A fuel nozzle assembly may supply fuel to the burner for combustion or ignition of the fuel. The fuel nozzle assembly may include a swirler and a fuel nozzle to supply a fuel and air mixture for combustion, which may supply a primary fuel supply and a secondary fuel supply. Increased efficiency and reduced emissions require the use of alternative fuels that burn at higher temperatures or at faster burn rates than conventional fuels, requiring improved fuel introduction without flame holding or flashback.

A gas turbine engine fuel system includes a fuel delivery system, an oil cooling subsystem, and a fuel conditioning subsystem. The fuel delivery subsystem delivers fuel to a gas turbine engine, and the oil cooling subsystem receives heated oil from the gas turbine engine. The fuel conditioning subsystem includes a fuel / oil cooler that is in fluid communication with the fuel delivery subsystem to receive the fuel and is in fluid communication with the oil cooling subsystem to receive the heated oil, the fuel / oil cooler configured to transfer heat from the heated oil to the fuel. A thermal coking sensor is in fluid communication with the fuel and is configured to generate a signal in response to interacting with the fuel. A controller is configured to determine a coking temperature indicating an onset of coking in the fuel based on the signal.

The present invention is applicable to the field of engine fuel pretreatment technology and provides a micro hydrogen bubble / diesel fuel preparation and supply device, comprising: a fuel tank, a controllable oil valve, a diesel filter, a three-way valve, a low-pressure fuel pump, a nanobubble generator, a first hydrogen bubble / diesel fuel storage device, an electronic control unit, a second hydrogen bubble / diesel fuel storage device, a high-pressure fuel pump, a high-pressure fuel rail, a fuel injector, an engine, and a hydrogen supply and hydrogen detection seal. The diesel flow channel between the fuel tank and the high-pressure fuel pump constitutes the low-pressure fuel circuit. The fuel tank outlet is connected to the inlet of the controllable oil valve, the outlet of the controllable oil valve is connected to the inlet of the diesel filter, the outlet of the diesel filter is connected to the first inlet of the three-way valve, and the third outlet of the three-way valve is connected to the inlet of the low-pressure fuel pump. The present invention provides a micro hydrogen bubble / diesel fuel preparation and supply device, and the fuel rail pressure sensor can measure the fuel rail pressure and transmit the signal to the electronic control unit.

The application relates to a methanol engine fuel atomization injection optimization structure, which comprises a nozzle body, a needle valve, a temperature-sensitive displacement driving assembly and a shielding sliding sleeve; a low-temperature cavitation-promoting micro-texture area and a high-temperature cavitation-suppressing micro-texture area are arranged on the outer surface of the needle valve in an axial direction; the temperature-sensitive displacement driving assembly is used for outputting axial displacement in response to the change of the ambient temperature of the head of the nozzle body and driving the shielding sliding sleeve to switch between a first limit position and a second limit position; when the shielding sliding sleeve is located at the first limit position, the high-temperature cavitation-suppressing micro-texture area is shielded and the low-temperature cavitation-promoting micro-texture area is exposed to methanol fluid; when the shielding sliding sleeve is located at the second limit position, the low-temperature cavitation-promoting micro-texture area is shielded and the high-temperature cavitation-suppressing micro-texture area is exposed to methanol fluid; the flow in the nozzle body forms a cavitation-enhanced atomization state in a low-temperature working condition and a stable-flowing cavitation-suppressing state in a high-temperature working condition. The application can automatically trigger regulation and control in response to temperature without additional sensors and actuators.

A vertical take-off and landing (VTOL) aircraft is disclosed, including a fuselage having an elevated front section configured to accommodate antennas for obstruction- free communication and a rear section configured to hold an engine, fuel storage, battery, and payload with easy and ergonomic access for loading, unloading, and maintenance A pair of wings extends laterally from fuselage to generate lift during flight, while a pair of canards are positioned forward of the wings to improve stability. The fuselage, the wings and canards are shaped to provide a significant nose-up pitching moment, enabling longitudinal stability at positive angles of attack. A pair of booms interconnect fuselage, wings, and canards to form an interconnected box-like structure that uniformly distributes loads across the aircraft. The aircraft includes VTOL rotors for vertical thrust, concealed landing gears for reduced air drag, and a cowling system with air inlets and outlets that provide efficient engine cooling.

Turbine engines can utilize a combustor to combust fuel to drive a turbine that drives the engine. A fuel nozzle assembly can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assembly can include a swirler and a fuel nozzle to supply a mixture of fuel and air for combustion. Increased efficiency and carbon-containing emissions requirements benefit from the use of alternative fuels that combust at higher temperatures than traditional fuels, requiring improved fuel introduction without flame holding or backfiring.

Engines can utilize combustors to combust fuel to drive the engine. Fuel nozzle assemblies can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assemblies can include swirlers and fuel nozzles to supply a mixture of fuel and air for combustion. The fuel nozzle assemblies can be configured to increase the lateral supply of fuel to reduce flame wash on combustor liners for the combustor.

A gas turbine engine includes a compressor section, a combustion section, and a turbine section in a serial flow arrangement wherein the combustion section includes: a combustor liner at least partially defining a combustion chamber; a wall coupled to the combustor liner; a first fuel supply unit that supplies a first fuel; a gas fuel supply part for supplying gaseous hydrogen fuel; and a fuel nozzle assembly coupled to the wall and fluidly coupled to the first fuel supply and the gaseous hydrogen fuel supply, the fuel nozzle assembly comprising: a main mixer; and a fuel nozzle, the fuel nozzle comprising: an outer wall defining a guide channel and an outer wall fuel orifice discharging at least one of the first fuel or the gaseous fuel radially outward into the main mixer; and the secondary mixer is arranged in the guide channel.

A gas turbine engine fuel system includes a fuel delivery system, an oil cooling subsystem, and a fuel conditioning subsystem. The fuel delivery subsystem delivers fuel to a gas turbine engine, and the oil cooling subsystem receives heated oil from the gas turbine engine. The fuel conditioning subsystem includes a fuel / oil cooler that is in fluid communication with the fuel delivery subsystem to receive the fuel and is in fluid communication with the oil cooling subsystem to receive the heated oil, the fuel / oil cooler configured to transfer heat from the heated oil to the fuel. A thermal coking sensor is in fluid communication with the fuel and is configured to generate a signal in response to interacting with the fuel. A controller is configured to determine a coking temperature indicating an onset of coking in the fuel based on the signal.

The application provides a dual-component five-machine combined power system, which comprises a mounting block, an oxidant inlet, a fuel inlet, an oxidant collecting groove, a fuel collecting groove, an oxidant flow channel, a fuel flow channel, an attitude control engine oxidant flow channel, an attitude control engine fuel flow channel, a track control engine oxidant flow channel and a track control engine fuel flow channel; an attitude control thrust chamber is mounted on the mounting block, the attitude control engine oxidant flow channel is connected between the attitude control thrust chamber and the oxidant collecting groove, and the attitude control engine fuel flow channel is connected between the fuel collecting groove and the attitude control thrust chamber; a track control thrust chamber is mounted on the mounting block, the track control engine oxidant flow channel is connected between the oxidant collecting groove and the track control thrust chamber, and the track control engine fuel flow channel is connected between the fuel collecting groove and the track control thrust chamber. The structure is free of pipelines and joints, compact, small in weight, high in reliability, small in space occupation and convenient to install and maintain.

A power system for an engine that can be used in an aircraft, a marine vessel or a land vehicle has a storage tank containing ammonia. An engine supported on the vehicle is configured to operate using hydrogen gas as fuel. A cracking device in or adjacent the engine receives heat from operation of the engine, e.g., from a compressor or a combustion chamber, and also receives ammonia from the storage tank, and it uses the heat from the engine to dissociate the ammonia to produce hydrogen gas. The cracking device supplies the hydrogen gas to the engine, which has a combustor in which combustion of the hydrogen gas takes place. The energy from the combustion drives the engine so as to provide mechanical energy.

To provide a concrete pump vehicle that cleans concrete pipes using cleaning water in a water tank mounted on a deck. [Solution] The wash water in the water tank 3 is heated using electricity from an external power source (not shown) or an on-board battery (not shown), so it can be heated inexpensively and the wash water can be warmed to a specified temperature without taking a long time. Conventionally, if the wash water in the tank or in the wash piping freezes while the ready-mixed concrete is being unloaded from a traveling vehicle at the work site, there was also the problem that engine fuel was needed just to warm the wash water, and it took a little while for the wash water to warm up.

An assembly is provided for a gas turbine engine. This assembly includes a fuel injector. The fuel injector includes a nozzle and a plurality of discrete fuel circuits. The discrete fuel circuits include a first fuel circuit, a second fuel circuit and a third fuel circuit. The nozzle extends axially along an axis to a nozzle tip. The first fuel circuit includes a first fuel outlet disposed at the nozzle tip. The second fuel circuit includes a plurality of second fuel outlets arranged circumferentially about the axis at the nozzle tip in a second fuel outlet array. The third fuel circuit includes a plurality of third fuel outlets arranged circumferentially about the axis at the nozzle tip in a third fuel outlet array.

The invention discloses an HPDI dual-fuel injection control system and method based on a rail pressure signal and a neural network, and relates to the technical field of engine fuel injection control. The collected rail pressure signals are preprocessed, conversion processing of converting time domain signals into frequency domain signals is executed to obtain frequency domain characteristics, and frequency band energy in a specific frequency range is extracted; according to the HPDI dual-fuel injection control system and method based on the rail pressure signal and the neural network, the new oil injector and the abraded oil injector correspond to different initial coefficients respectively, and can well adapt to different abrasion stages of the oil injectors; meanwhile, in order to effectively solve the problem that a traditional method is poor in adaptability to complex working conditions and the dynamic state of the fuel injector, the collected rail pressure signals cover multiple working conditions such as engine idling and acceleration, the neural network model can fully learn different working condition characteristics, and the system can stably operate in complex scenes.

The invention belongs to the technical field of engine fuel injection, and particularly discloses an integrated clean fuel high-pressure injection device which is characterized in that a first-stage valve shell and a pump body are sequentially arranged in the longitudinal direction, and an injection valve assembly is installed at the longitudinal lower end of the pump body; the first oil inlet channel is formed in the valve shell, the head end of the first injection oil channel communicates with the first oil inlet channel, and the tail end of the first injection oil channel extends to the bottom injection valve assembly of the pump body from the valve shell in the longitudinal direction; the pump body is provided with a reinforcing cavity, the plunger is arranged in the pressurizing cavity in a sliding mode and divides the reinforcing cavity into a pressurizing front cavity and a pressurizing rear cavity, the second oil inlet channel communicates with the pressurizing rear cavity, the head end of the second injection oil channel communicates with the pressurizing rear cavity, and the tail end of the second injection oil channel communicates with the injection valve assembly. The injection valve assembly correspondingly controls opening or closing of the first injection oil duct and the second injection oil duct. Through the integrated design, the structure is simplified, the number of high-pressure sealing points is reduced, and the reliability and safety of the system are effectively improved.

A first fuel injector includes a first injector base, a first injector flange and a first gaseous fuel passage. The first injector flange is connected to the first injector base at a distal end of the first fuel injector. The first injector flange projects radially out from the first injector base to an outer rim of the first fuel injector. The first gaseous fuel passage includes a first passage upstream section and a first passage downstream section fluidly coupled to the first passage upstream section. The first passage upstream section extends axially within the first injector base. The first passage downstream section extends radially through the first injector flange to an outlet in the outer rim. A trajectory of the first gaseous fuel passage at the outlet is angularly offset from the first axis by a first acute offset angle.

Systems are provided for an engine fuel delivery system for vehicles under test. In one example, a fuel delivery system includes a bulk fuel storage tank to house bulk fuel at low pressure and an on-board fuel tank to house smaller quantities of pressurized fuel to be fed to a vehicle propulsion system. The fuel delivery system further includes a positive displacement pump to pressurize fuel from the bulk fuel storage tank and feed fuel to the on-board fuel tank. A plurality of valves and sensors are further included with an arrangement of fuel lines to monitor and direct fuel flowing in the fuel delivery system.