95 results about "Inlet manifold" patented technology

The application discloses a methanol engine control method, related device and methanol engine, and relates to the field of engine systems. By constructing a physical model of an air system, a first coupling influence compensation term representing the deterministic coupling influence between each actuator can be calculated in real time according to an expected value and an actual working condition. By introducing a nonlinear extended state observer, uncertainty factors, such as methanol injection amount deviation, pipeline carbon deposition, external environment changes and the like, which cannot be covered by the physical model, can be estimated in real time, and a second coupling influence compensation term can be generated. Finally, by a linear state error feedback control law, the first coupling influence compensation term and the second coupling influence compensation term are fused to form a dual-channel collaborative compensation architecture of physical model feedforward and nonlinear extended state feedback, and rapid and accurate control of an intake manifold pressure is realized. Through the cooperation of the physical model feedforward and the disturbance observation feedback, the control robustness of the intake manifold pressure and other key parameters is improved.

The utility model is suitable for internal combustion engine gas supply mechanism technical field provides a kind of multi-point injection air intake pipe of gas machine, comprising: main pipeline, its one side is equipped with air inlet, the other side of main pipeline is equipped with several air intake manifold, each air intake manifold is equipped with air jet nozzle, the flow direction of the gas in the inside of air jet nozzle and air intake manifold has certain angle, air intake manifold and main pipeline use integrated structure, by this, the utility model is guaranteed by setting integrated air intake structure, the reliability of air intake, while setting a kind of separate air jet structure, to ensure the separate control to engine, optimization control effect.

Engine system, with: an engine with a plurality of cylinders (11-14) suitable for generating a driving torque by burning fuel; a first intake manifold (31) which is connected to an intake pipe (20) through which intake air flows into a part of the majority of cylinders; a second intake manifold (32) which supplies the intake air through the first intake manifold (31) to another part of cylinders of the plurality of cylinders (11-14); a first exhaust manifold (41) which is connected to a part of the cylinders which is connected to the first intake manifold; a second exhaust manifold (42) which is connected to another part of the cylinders which is connected to the second intake manifold (32); a return line (60) branched off from the second exhaust manifold (42) to be coupled to the second intake manifold (32); a recirculation inlet valve (61) located at the point where the recirculation line (60) and the second exhaust manifold (42) are connected; and a manifold connecting valve (63) which is arranged on an inlet line (20) between the first inlet manifold (31) and the second inlet manifold (32), wherein, when some cylinders are deactivated, the recirculation inlet valve (61) is open to supply exhaust gas from the second exhaust manifold (42) to the second inlet manifold (32), and the manifold connecting valve (63) is cut off in order to prevent intake air from being supplied through the first intake manifold (31) to the second intake manifold (32), and the entire exhaust gas flow rate from the deactivated cylinders flows back into the deactivated cylinders.

Disclosed in the embodiments of the present disclosure are a method for determining a desired pressure ratio of a throttle valve, a method for determining a desired flow rate of a range extender, a method for calculating an exhaust gas recirculation (EGR) rate, and a method for determining the value of a target parameter of a range extender. A throttle valve is a throttle valve of a vehicle range extender, downstream of the throttle valve is in communication with a range extender body by means of an intake manifold, and the range extender body is in communication with an exhaust gas bypass valve. The method for determining a desired pressure ratio of a throttle valve comprises: acquiring a desired pressure of an intake manifold, a desired upstream pressure and an actual upstream pressure of a throttle valve, and a desired opening degree of an exhaust gas bypass valve; on the basis of the desired upstream pressure and the actual upstream pressure of the throttle valve, determining a pressure deviation; and on the basis of the desired pressure of the intake manifold, the desired opening degree of the exhaust gas bypass valve and the pressure deviation, determining a desired pressure ratio of the throttle valve. The method, apparatus and system for determining a desired pressure ratio of a throttle valve, and the vehicle provided in the embodiments of the present disclosure can ensure the operating efficiency of range extenders.

The application discloses a kind of gas engine active precombustion chamber lean combustion comprehensive system and control method, belong to gas engine technical field.The system includes main combustion gas inlet pipeline, active gas inlet pipeline, active precombustion chamber and ECU.Active gas inlet pipeline is equipped with active gas inlet electric pressure regulating valve, active gas inlet total gas metering valve, each cylinder precombustion chamber entrance is equipped with active gas inlet single cylinder gas metering valve.ECU and gas inlet manifold pressure sensor and electric pressure regulating valve form closed loop pressure regulating unit, maintain the positive pressure difference between precombustion chamber and main combustion chamber;ECU and total metering valve, single cylinder metering valve, single cylinder exhaust temperature sensor form metering control unit, realize total air intake and single cylinder air intake independent closed loop regulation.The application controls precombustion chamber air intake pressure and each cylinder gas quantity accurately, combines the intercylinder balance control based on exhaust temperature, significantly improves the stability and uniformity of multi-cylinder gas engine lean combustion, effectively improves thermal efficiency.

The utility model provides a novel air intake manifold structure, including air intake manifold, the lateral wall of air intake manifold is connected with the air intake branch pipe of multiple and intercommunication, the one end of air intake manifold is the opening of air throttle body connection, the liquid pool chamber that sets up downward away from the opening of air intake manifold, the inner wall of air intake manifold is seted up with the strip shape water inlet hole of liquid pool chamber intercommunication along its length direction, air intake manifold has the electric heating cover, the bottom of liquid pool chamber is seted up with the drain hole of not being stopped by electric heating cover, the outer wall of liquid pool chamber is provided with the dust screen cover of covering drain hole. The utility model discloses, adopt the design of automatic ice melting and automatic drainage, can effectively prevent the icing in air intake manifold, avoid because icing influence engine's inflation efficiency and power output.

The application discloses a heating control system and method of a catalytic converter; the intake air flow into the engine is calculated according to the intake manifold pressure; the heating time length of the catalytic converter is determined according to the intake air flow into the engine, and the catalytic converter is heated according to the heating time length. The application judges the condition of entering the catalytic converter heating during cold start, calculates the engine intake air quantity during each catalytic converter heating stage, calculates the heating time of the catalytic converter after each engine start according to the engine intake air quantity and the catalytic converter deterioration coefficient, makes the catalytic converter quickly reach the effective conversion temperature, effectively reduces the emission and fuel consumption of the catalytic converter during the heating stage in the whole vehicle service period, and guarantees the time control of the catalytic converter heating after each engine start. The application considers the aging of the catalytic converter in the whole vehicle service period, makes the catalytic converter quickly reach the effective conversion temperature, and effectively reduces the emission and fuel consumption of the catalytic converter during the heating stage in the whole vehicle service period.

This invention discloses a method, apparatus, system, and vehicle for determining the desired throttle pressure ratio. The throttle is the throttle of a vehicle's range extender, and its rear end is connected to an exhaust gas bypass valve via an intake manifold. The method for determining the desired throttle pressure ratio includes: acquiring the desired pressure of the intake manifold, the desired pressure and actual pressure at the front end of the throttle, and the desired opening degree of the exhaust gas bypass valve; determining the pressure deviation based on the desired pressure at the front end of the throttle and the actual pressure; and determining the desired throttle pressure ratio based on the desired pressure of the intake manifold, the desired opening degree of the exhaust gas bypass valve, and the pressure deviation. The method, apparatus, system, and vehicle for determining the desired throttle pressure ratio provided by this invention can ensure the working efficiency of the range extender.

This invention relates to a two-stage turbocharging series-parallel switching adjustment structure, comprising a first turbocharging system and a second turbocharging system, both of which are connected to an engine body. The engine body contains several engine cylinders and is connected to two sets of exhaust manifolds. Each set of exhaust manifolds is connected to the exhaust port of one half of the engine cylinders. The engine body is also connected to an intake manifold. This invention solves the problem that existing engine turbocharging systems are difficult to flexibly adapt to different operating conditions, and that turbocharging effect and intake efficiency are limited. By setting up a two-stage turbocharging series-parallel switching adjustment structure, flexible and precise control of engine intake pressure and intake volume under different operating conditions is achieved, significantly improving the overall performance and operating efficiency of the engine.

The application relates to the technical field of vehicles, in particular to an engine air intake amount control method and device, a vehicle, a storage medium and a product, wherein the method comprises the following steps: obtaining a demand torque of a driver at a current moment; calculating a target air intake amount of an engine at the current moment according to the demand torque of the driver at the current moment; inputting the target air intake amount into at least one of an intake manifold pressure system and a mass flowmeter system, and controlling the air intake amount of the engine based on the at least one of the intake manifold pressure system and the mass flowmeter system. Therefore, when the engine is in a transient state, the throttle, vortex and turbulence phenomena in the air intake pipeline and the throttle valve can cause the actual air intake amount to fluctuate greatly, thereby affecting the measurement accuracy of the pressure sensor and the flowmeter, and causing inaccurate air intake amount control.

The application discloses a kind of determination method, device, vehicle and storage medium of vehicle exhaust flow, wherein the determination method of vehicle exhaust flow includes: obtaining the pressure ratio of the exhaust valve of vehicle, wherein the pressure ratio is the ratio between the pressure value of the outlet side of exhaust valve and the pressure value of the inlet side of exhaust valve;The comparison result is obtained by comparing the pressure ratio and the preset threshold value;In response to the comparison result indicating that the pressure ratio is less than the preset threshold value, the exhaust flow of the vehicle is determined based on the initial exhaust flow of the vehicle and the correction coefficient;In response to the comparison result indicating that the pressure ratio is greater than or equal to the preset threshold value, the exhaust flow of the vehicle is determined based on the flow of multiple types of gas flowing through the intake manifold of the vehicle, wherein the multiple types of gas flow include: mixed gas flow, air flow and natural gas flow.The present application solves the technical problem that the accuracy of calculating the vehicle exhaust flow in the prior art is not high, resulting in poor stability of the vehicle engine combustion.

A heat exchanger with regulation of the current of a heat transfer medium comprises inlet and outlet ports for the heat transfer medium and a thermally regulated component comprising heat transfer surfaces. First and second paths of the flow of the heat transfer medium are in heat transfer contact with different heat transfer surfaces. An inlet manifold comprises an inlet integrated channel connected to the inlet port. The first and second paths of the flow are connected by a first end to the inlet integrated channel and a second end to the outlet port. The inlet integrated channel comprises first and second inlet channels that connect the inlet port to a mouth of the first and second paths from the inlet integrated channel, respectively. The inlet manifold in the first inlet channel comprises a first valve for the regulation of the flow of the heat transfer medium through the first inlet channel.

This application provides an engine exhaust energy recovery system and a vehicle. The system includes a compressor, a turbine, a generator, and a battery. The turbine inlet is connected to the engine's exhaust manifold, and the turbine outlet is connected to the exhaust pipe. The compressor outlet is connected to the engine's intake manifold. The turbine and compressor are coaxially connected to form a turbocharger. The turbine is also coaxially connected to the generator, and the generator is electrically connected to the battery. When it is determined that the turbocharger does not need to intervene in engine operation, the gas output from the exhaust manifold drives the turbine drive shaft to rotate. The drive shaft drives the generator to rotate coaxially, generating electricity, which is then stored in the battery. By using the turbine to drive the generator to generate electricity and storing it in the battery when it is determined that the turbocharger does not need to intervene in engine operation, the gas that would otherwise be emitted into the atmosphere can be recovered and reused to drive the turbine and then drive the generator to generate electricity, thereby improving the utilization rate of engine exhaust gases.

The application relates to an intake manifold, a vehicle engine and a vehicle thereof. The intake manifold comprises a lower die half and an upper die half. The lower die half is provided with a first gas outlet, a second gas outlet, a third gas outlet and a fourth gas outlet which are sequentially and spacedly arranged along a first direction. In the first direction, the lower die half is provided with a first flow blocking part between the first gas outlet and the second gas outlet, and a second flow blocking part between the third gas outlet and the fourth gas outlet. The upper die half is connected with the lower die half and forms an intake chamber together with the lower die half. The upper die half is provided with an intake port which is adjacent to the first gas outlet. The intake port is communicated with the first gas outlet, the second gas outlet, the third gas outlet and the fourth gas outlet through the intake chamber. The uniformity of the airflow distribution of the four gas outlets of the intake manifold is improved, and the stability of the vehicle engine during operation is improved.

This invention discloses an intake air temperature stratification control duct structure and temperature control method for an ammonia fuel engine. The ammonia fuel engine is equipped with a fuel injection device that injects ammonia fuel into the intake manifold. The fuel injection device includes a storage tank, a first gas injection valve for connecting to the intake manifold, and a second gas injection device for connecting to a premixer. This invention, by incorporating an injection simulation component, can simulate the air-fuel ratio and air temperature at the time of fuel injection. It can also simulate, to a certain extent, the temperature drop of the liquid ammonia fuel itself and the degree of vaporization leading to the temperature decrease of the mixed gas. Based on this temperature drop, the temperature control components of each layer are controlled to compensate for the temperature drop in advance, ensuring that the target temperature of the mixed gas is maintained after the ammonia fuel is mixed.

This utility model discloses a multi-layer variable diameter spiral molten salt heat exchanger, including a lifting mechanism and a spiral coil assembly. The lifting mechanism drives the spiral coil assembly to move up and down within the molten salt tank. The spiral coil assembly includes a spiral coil, an oil inlet manifold, and an oil outlet manifold. The oil inlet manifold has an oil inlet, and the oil outlet manifold has an oil outlet. The spiral coil is spirally coiled below the oil inlet and oil outlet manifolds. The advantages of this utility model are: it enables direct and controllable heat exchange in the molten salt storage tank, achieving high heat exchange efficiency and a higher system thermal energy utilization rate than traditional molten salt heat exchange systems; the implementation of this equipment system can reduce system investment, resulting in significant advantages in system operation benefits, and it is easily controlled digitally.

A heat exchange module for an in-line freezing / chilling system for freezing / chilling materials, comprising: a body forming a conduit having: an internal wall defining an internal space for chilling / freezing materials contained therein, the internal space extending a length of the body; and an external wall spaced from the internal wall to define at least one channel formed therebetween that extends the length of the body; an inlet manifold attached to an inlet end of the body to seal the inlet end, the inlet manifold having at least one inlet for introducing a heat exchange medium into the at least one channel and being controllable to introduce the material to be frozen / chilled into the internal space of the body; and an outlet manifold attached to an outlet end of the body to seal the outlet end, the outlet manifold having at least one outlet for removing a heat exchange medium from the at least one channel and being controllable to receive the frozen / chilled material from the internal space of the body

This application relates to an engine cooling system and control method, belonging to the field of engine cooling technology. The system includes an engine with an exhaust manifold, a turbine, an intercooler, a main compressor, an intake manifold, a fan clutch, and a main cooling fan connected to the fan clutch. The exhaust manifold is connected to the turbine, the main compressor is coaxially connected to the turbine, and the main compressor is connected to the intercooler. The intercooler cools the compressed air from the main compressor before it is introduced into the intake manifold. The system also includes an electronic control unit (ECU), a secondary compressor coaxially connected to the turbine, and an air cooling device connected to the secondary compressor via cooling pipes. The air cooling device is installed on high-temperature components of the engine. A flow control valve is installed on the cooling pipes, and a temperature sensor is installed on the engine. The ECU is electrically connected to the fan clutch, the temperature sensor, and the flow control valve. This application can reduce the load on the main cooling fan and improve engine fuel economy.

The present application relates to a kind of vertical cooler of heat exchange unit convenient to disassemble, support is set with transition section between upper heat exchange unit and lower heat exchange unit, the upper end of transition section is detachably connected with the bottom of unit shell of upper heat exchange unit by upper flange, bolt structure, the lower end of transition section is detachably connected with the top of unit shell of lower heat exchange unit by lower flange, bolt structure, support is set with the guide rail corresponding with heat exchange unit, the opposite sides of the unit shell of heat exchange unit are provided with the track cooperation of guiding movement in front and back direction with guide rail, the outlet manifold of upper heat exchange unit is connected with the inlet manifold of lower heat exchange unit by connecting pipe, the upper end of connecting pipe is detachably connected with the outlet manifold of upper heat exchange unit, the lower end of connecting pipe is detachably connected with the inlet manifold of lower heat exchange unit.The present application solves the technical problem that the workload of disassembly and assembly is increased when lower heat exchange unit is maintained in prior art, upper heat exchange unit needs to be disassembled first.

An abatement system (104) for treatment of exhaust gases of a vacuum processing system (100), the abatement system (104) comprising: an inlet manifold (200), the inlet manifold (200) comprising: a single fluid inlet (224) for receiving an exhaust gas stream from the vacuum processing system (102); and a plurality of fluid outlets (226) coupled to the fluid inlet (224); and a plurality of abatement devices (202) arranged to, in use, receive the exhaust gas stream from the inlet manifold (200); wherein each abatement device (202) of the plurality of abatement devices (202) is coupled to a respective fluid outlet (226) of the inlet manifold (200).

An oxygen-enriched gas system, comprising a low-pressure oxygen inlet manifold, the low-pressure oxygen inlet manifold being connected with a plurality of single-system inlet pipes, the single-system inlet pipes being connected with a mixer, the mixer being further connected with a single-system fan; a total cut-off valve, a total pipe pressure gauge and a total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold; a single-system cut-off valve, a Venturi flowmeter and a single-system regulating valve are arranged on the single-system inlet pipe. The oxygen-enriched gas system is provided, the total cut-off valve, the total pipe pressure gauge and the total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold, the single-system cut-off valve, the Venturi flowmeter and the single-system regulating valve and other components are arranged on the single-system inlet pipe, and the intelligent linkage is realized by cooperating with a main controller, the flow and the pressure can be accurately regulated and controlled, the oxygen temperature and the oxygen concentration are monitored in real time, and the interlocking protection is realized when the abnormality occurs.

This invention discloses a sealing structure and method for an automotive intake manifold, comprising a sealing body fixedly sleeved on a bottom bracket. The sealing body includes a sealing strip, an outer layer, and an inner layer. An adsorption mechanism is fixedly connected to the inner side of the inner layer, and a sealing performance detection mechanism is fixedly connected inside the sealing strip. The sealing performance detection mechanism includes a first copper block and a second copper block. A cavity is provided inside the sealing strip. The first copper block is fixedly attached to the inner wall of the top of the cavity, and the second copper block is fixedly attached to the inner wall of the bottom of the cavity. A first copper sheet is fixedly connected to one outer wall of the first copper block, and the first copper sheet passes through the sealing strip and is fixedly attached to the outer wall of the outer layer. A second copper sheet is fixedly connected to one outer wall of the second copper block. The sealing structure and method for an automotive intake manifold disclosed in this invention can monitor the sealing performance at different locations, which can compensate for the inability to distinguish the sealing performance by appearance and reduce the difficulty of maintenance.

Title: Hydrogen combustion engine torque control Abstract A hydrogen combustion engine comprising a plurality of combustion chambers each comprising a hydrogen fuel supply and a fuel ignition device, for converting the ignited hydrogen fuel to work, the engine further comprising an air intake manifold and an exhaust, a turbine for driving a turbocompressor; and an air intake throttle valve for closing off the air intake manifold from the turbocompressor, and an engine controller, wherein the engine controller is arranged to control the air intake throttle valve in accordance with a torque request T and corresponding fuel supply S to the combustion chamber; wherein, in a negative torque transient T’ that exceeds a threshold value, the controller is arranged to limit a fuel supply S to a fraction S’ of the plurality of combustion chambers to keep the air to fuel ratio within a combustible range during a transient period of closing the intake valve, and wherein said fraction S’ of combustion chambers receives a fuel quantity s’ that is correspondingly increased relative to the fraction s that would normally be provided to all of the plurality of combustion chambers.

A craft has: a body including an engine bay; and an engine having an installed condition at least partially in the engine bay. The engine has a heat exchanger having an inlet manifold; and in the installed condition an air flowpath passes through the inlet manifold to the heat exchanger and exits the heat exchanger to the engine bay.

The application belongs to the field of engine control, and discloses a control method for exhaust brake pressure maintenance, an engine and a vehicle, which are applied to an engine system, wherein an air inlet manifold of the engine system is respectively connected with an outlet of a compressor and an inlet of a cylinder, a throttle valve is arranged on an upstream of the air inlet manifold, an exhaust manifold is respectively connected with an outlet of the cylinder and an inlet of a turbine, an exhaust brake valve is arranged downstream of the turbine, an engine control unit is electrically connected with the turbocharger, the throttle valve and the exhaust brake valve, and the method comprises the following steps: S1, a main charge model, i.e., a dynamic exhaust manifold pressure model, is established, and the intake and exhaust are calculated by two sets of equations; S2, the main charge model is corrected; and S3, closed-loop control of a target exhaust manifold pressure is performed. Through the designed algorithm, the maximum braking power is maintained during exhaust braking by combining the transient prediction algorithm with the closed-loop control of the intake flow, and the engine components are prevented from being damaged by the excessively high exhaust pressure under the transient working condition.

The application relates to an engine rotating opposed-piston shaft cooling system and an engine, the shaft cooling system comprising a power output shaft and a nested shaft nested with the power output shaft, the power output shaft being provided with a power output shaft oil inlet channel and a power output shaft oil outlet channel along an axis, and the power output shaft being provided with a power output shaft oil inlet manifold and a power output shaft oil outlet manifold corresponding to the power output shaft oil inlet channel and the power output shaft oil outlet channel, the power output shaft oil inlet manifold and the power output shaft oil outlet manifold being provided with different cross sections and being provided with a power output shaft first piston and a power output shaft second piston; the nested shaft being provided with a nested shaft oil inlet channel and an oil outlet channel along an axis, and the nested shaft being provided with a nested shaft oil inlet manifold and a nested shaft oil outlet manifold corresponding to the nested shaft first piston and the nested shaft second piston; and the nested shaft oil inlet ring groove and the nested shaft oil outlet ring groove corresponding to the oil inlet oil pad and the oil outlet oil pad, and forming a nested shaft oil inlet main channel and a nested shaft oil outlet main channel.

An overhead valve (OHV) internal combustion engine includes an engine block. Cylinder heads are mounted on the engine block. Intake and exhaust ports connect to intake and exhaust manifolds. Intake pushrod assemblies engage intake valve rocker arms and valve lifters. Exhaust pushrod assemblies engage exhaust valve rocker arms and exhaust valve lifters. One of the intake and exhaust pushrod assemblies is a jointed pushrod assembly. The jointed pushrod assembly includes an upper pushrod segment that engages one of the intake and exhaust valve rocker arms. A lower pushrod segment engages one of the respective intake and exhaust valve lifters. Complementary joint members pivotally engage each other and can include an angle of less than 180 degrees. At least one pushrod guide assembly is mounted on one of the engine block and each head, and defines at least one passage that guides the complementary joint members.

The application relates to a containing device of a vehicle and the vehicle. The containing device comprises a containing structure, the containing structure is used for containing an adsorbent, and the adsorbent is used for adsorbing fuel vapor. The containing structure is provided with an adsorption port, a desorption port and an atmosphere port. The adsorption port is used for communicating with a fuel tank of the vehicle. The desorption port is used for communicating with an air intake manifold of an engine of the vehicle. The atmosphere port is used for communicating with an atmosphere environment outside the containing device. The containing device has at least two states. In different states, the volume of a space in the containing structure which communicates with the adsorption port is different, or the volume of a space in the containing structure which communicates with the desorption port is different.