1216 results about "Inlet manifold" patented technology

A three-way heat exchanger includes an airflow inlet, an airflow outlet, a heat transfer fluid inlet manifold extending proximate the airflow outlet, and a heat transfer fluid outlet manifold extending proximate the airflow outlet. The heat exchanger also includes panel assemblies each including a frame defining a heat transfer fluid channel and a membrane positioned on the frame and defining a desiccant channel. The heat transfer fluid channel is connected to the heat transfer fluid inlet and outlet manifolds for channeling a flow of the heat transfer fluid therebetween counter to the airflow direction. Each panel assembly also includes a heat transfer fluid flow guide positioned in the heat transfer fluid channel to control the flow of the heat transfer fluid counter to the airflow direction.

A heat exchanger includes a heat exchanger body having a plurality of heat exchanger tubes, an inlet manifold connected to the heat exchanger body and configured to distribute a flow of fluid from a fluid inlet of the inlet manifold to the plurality of heat exchanger tubes, and an outlet manifold connected to the heat exchanger body and configured to collect the flow of fluid from the plurality of heat exchanger tubes and direct the flow of fluid through a fluid outlet. The heat exchanger body is formed via one or more additive manufacturing processes, and at least one of the inlet manifold and the outlet manifold is formed via one or more subtractive manufacturing processes.

An HVAC system includes a refrigerant sub-system and an air treatment sub-system. The air treatment sub-system includes a three-way heat exchanger. The HVAC system is operable to circulate heat transfer fluid between the heat exchanger and the refrigerant sub-system. The heat exchanger includes panel assemblies, heat transfer fluid inlet and outlet manifolds, and a heat transfer fluid inlet and outlet. Each panel assembly includes a heat transfer fluid channel and a desiccant channel separated from the heat transfer fluid channel. The inlet and outlet manifolds are connected to the heat transfer fluid channel of each panel assembly, and each extend between lateral sides of the heat exchanger. The inlet manifold is closed at a first lateral side and connected to the inlet at a second lateral side, and the outlet manifold is closed at the second lateral side and connected to the outlet at the first lateral side.

A heat exchanger is provided with a unitary, single-piece structure that can be formed via 3D printing, for example. The heat exchanger includes a main body a plurality of plates stacked and integrally formed with the body. First fluid channels are defined by gaps in the material of the main body, and second fluid channels are defined by gaps in the material of the main body and are stacked with the first fluid channels in alternating fashion, separated by the plates. Each of the first fluid channels are fluidly coupled to an inlet manifold and an outlet manifold. A jumper pipe is fluidly coupled to and between an inlet port and the inlet manifold. In an embodiment, the jumper pipe is curved at one end thereof to intersect the inlet manifold at a generally perpendicular angle.

A fluid end for use with a power end. The fluid end comprises a plurality of fluid end sections positioned adjacent one another. Each section includes a single horizontally positioned bore. A plunger is installed within the bore and includes a fluid passageway. Low-pressure fluid enters the bore through the plunger and high-pressure fluid exits the fluid end through an outlet valve installed within the bore. The intake of low-pressure fluid within the fluid end section is regulated by an inlet valve installed within the plunger. Low-pressure fluid enters the plunger through an inlet component attached to both the plunger and an inlet manifold.

A supercharged internal combustion engine is drivably connected to a variable displacement supercharger operable to continuously supply varying amounts of an air mass to the engine in response to the varying power requirements of the engine. The variable displacement capability eliminates blowdown losses of fixed displacement superchargers and substantially reduces the need for throttling of the intake air. The device also presents an air-motoring mode that can recover a portion of the engine throttling losses as positive power returned to the engine crankshaft when the engine intake manifold is below atmospheric pressure.

The invention discloses a dual-fuel engine combustion method based on internal and external cooperative injection of a methanol engine, and belongs to the field of methanol fuel engines. The combustion method is realized on the basis of combustion of a diesel / methanol dual-fuel engine with internal and external cooperative injection of a methanol engine, a combustion chamber is formed by a cylinder cover, a cylinder and a piston, an internal and external concentric needle valve oil injector and an in-cylinder direct injection methanol injector are mounted on the cylinder cover, and a methanol port injector is mounted on an intake manifold; the high-reaction-activity diesel oil adopts a double direct injection technology; the low-reactivity methanol fuel adopts an in-cylinder high-low pressure injection and port fuel injection technology, the injection pressure, the injection timing and the injection frequency of the in-cylinder methanol injector are controlled, the gas distribution phase and the valve motion law are adjusted according to the operation condition of the engine, and mixed gas concentration layering of different gradients is formed. The ratio, the injection rule and the injection timing of the diesel oil and the methanol fuel can be flexibly adjusted, and stable operation of multi-mode combustion and high-efficiency clean combustion of the engine is achieved.

The invention relates to the technical field of exhaust gas recirculation of engines, in particular to an engine, a vehicle and an EGR exhaust gas flow control method. The engine comprises an air cylinder, at least two exhaust manifold branches, an EGR system and a control system, the air cylinder comprises an air inlet and at least two exhaust ports, the air inlet is communicated with an air inlet manifold, the number of the exhaust manifold branches is the same as that of the exhaust ports, inlets of the exhaust manifold branches are communicated with the exhaust ports in a one-to-one correspondence mode, the EGR system comprises at least two EGR channels, and the EGR channels are communicated with the exhaust ports in a one-to-one correspondence mode. Inlets of the EGR channels communicate with the exhaust manifold branches in a one-to-one correspondence mode, an outlet of each EGR channel communicates with the intake manifold, each EGR channel is connected with the control system, and the control system is used for controlling the waste gas flow of the at least two EGR channels. According to the implementation mode, due to the fact that the opening degree of each EGR channel can be accurately controlled, the engine can achieve optimal EGR rate control under the small exhaust gas flow and the large exhaust gas flow, and therefore the fuel economy and emission consistency of the engine are improved.

The invention discloses an air-fuel ratio control method for a high-pressure direct injection engine in a diesel-natural gas dual-fuel cylinder, and relates to the technical field of engine control, and the air-fuel ratio control method comprises the following steps: collecting diesel mass flow, natural gas volume flow and natural gas component data, and determining a diesel-natural gas mixing ratio; a basic target air-fuel ratio is obtained by combining the real-time rotating speed of an engine, the load and the diesel oil-natural gas mixing proportion; based on the pressure and temperature of the intake manifold and the rotating speed of the engine, the target air-fuel ratio after model correction is obtained; the working condition load change rate is detected, the pre-optimized air-fuel ratio trajectory MAP is called, and a transient correction target value is generated; calculating the deviation between the transient correction target value and the measured value of the air-fuel ratio sensor and the deviation change rate, and outputting an air-fuel ratio correction value; and the final target air-fuel ratio is calculated and sent to an air flow control valve to execute air inlet adjustment. The method is suitable for engine application scenes requiring high-precision and self-adaptive control to improve combustion efficiency and reduce emission.

The present invention specifically relates to a correction control method for calculating the fuel injection amount at different altitudes of a port injection engine, a pressure correction control method for optimizing the fuel injection amount under different environmental pressures, a correction curve of the intake manifold pressure and the oil rail pressure difference is creatively introduced in the model calculation, and the correction value at different altitudes and different intake manifold pressures is accurately calibrated to ensure that the air-fuel ratio can be controlled at a theoretical optimal level at different altitudes. The present invention is based on a large amount of road test data, including measurements at different ambient temperatures and different altitudes. Through big data statistical cluster analysis, it is found that the key factor affecting the accurate calculation of the fuel amount of the port injection engine is the pressure difference between the oil rail pressure and the intake manifold. Through this method, on the one hand, the fuel economy at high altitudes can be reduced, while ensuring high power output in plateau environments.

A vehicle includes a thermal management system. The thermal management system of the vehicle comprises an engine cooling system, an air conditioning system, and a low-temperature cooling system. The engine cooling system comprises an engine, an intercooler, a first heat dissipation device, and a first fan. An air outlet end of the intercooler is in communication with an air inlet manifold, and an air inlet end of the intercooler is in communication with a supercharger. The first fan is used for dissipating heat for the intercooler and the first heat dissipation device. The low-temperature cooling system comprises a second heat dissipation device and a second fan, and the second fan is used for dissipating heat for the second heat dissipation device and a condenser.

The invention belongs to the technical field of clean energy, and particularly relates to an ammonia-hydrogen fusion engine system and a control method thereof.The ammonia-hydrogen fusion engine system comprises an engine, a liquid ammonia vaporization device and an ammonia reaction hydrogen production device, the engine is provided with an intake manifold and an exhaust manifold, and the exhaust manifold penetrates through the ammonia reaction hydrogen production device; the liquid ammonia vaporization device is communicated with the ammonia reaction hydrogen production device through a first pipeline and is communicated with the intake manifold through a second pipeline, and the second pipeline is communicated with the first pipeline so as to convey ammonia gas to the ammonia reaction hydrogen production device and the intake manifold respectively; and a gasoline injector is further arranged on the intake manifold, and when the water temperature of the engine is smaller than a first temperature threshold value or the temperature of a catalyst in the ammonia reaction hydrogen production device is smaller than a second temperature threshold value, the gasoline injector is used for injecting gasoline into the intake manifold so as to start the engine. The cold start problem of the engine can be solved, and the ignition reliability is improved.

The invention discloses a ventilation system of an engine, a control method of the ventilation system of the engine and a vehicle. A pressure sensor is arranged in a crankcase; the fan and the first hydrogen concentration sensor are arranged on the first branch; the adsorption part is arranged on the second branch and used for adsorbing hydrogen, one end of the first branch is suitable for being connected with a crankcase, the other end of the first branch is connected with the second branch and the third branch, the first branch selectively communicates with the second branch or the third branch, and the second branch and the third branch are connected in parallel and suitable for being connected with an intake manifold. Therefore, when the pressure in the crankcase is too large, gas in the crankcase can be pumped out through the fan, and the first branch and the second branch can be communicated to reduce the hydrogen concentration of the gas through the adsorption part, so that the probability of risks of explosion, combustion and the like caused by too much hydrogen in the crankcase can be reduced; the use safety of the engine is improved, and the extracted gas can flow back to the intake manifold, so that environmental pollution is avoided.

The invention provides a control device for an intercooling bypass and an EGR cooler bypass in an engine, and belongs to the technical field of engines, the control device comprises a multi-way butterfly valve provided with at least three airflow channels, and the input end of the multi-way butterfly valve is communicated with a supercharger; the EGR cooler is arranged on the EGR cooling branch, one end of the EGR cooling branch communicates with the EGR loop, and the other end of the EGR cooling branch communicates with the intake manifold; one end of the EGR bypass branch communicates with the EGR loop through a first airflow channel of the multi-way butterfly valve, and the other end of the EGR bypass branch communicates with the EGR cooling branch and is located between the EGR cooler and the intake manifold; one end of the inter-cooling bypass branch is communicated with the intake manifold, and the other end of the inter-cooling bypass branch is communicated with a second airflow channel of the multi-way butterfly valve; and one end of the intercooler communicates with the intake manifold, and the other end of the intercooler communicates with the third airflow channel of the multi-way butterfly valve. By additionally arranging the multi-way butterfly valve, the purpose of adjusting the cooling strategies of the EGR system and the intercooling system at the same time is achieved.

The invention discloses a pipeline system for improving the self-pressurization speed of a gas vehicle and reducing the inlet gas temperature rise and a vehicle, and relates to the technical field of vehicle power system heat dissipation, the pipeline system for improving the self-pressurization speed of the gas vehicle and reducing the inlet gas temperature rise comprises an LNG vaporization pipeline, the LNG vaporization pipeline comprises a gas cylinder and a vaporizer, and the LNG vaporization pipeline is used for outputting vaporized LNG to an engine; the supercharging pipeline comprises a supercharger and an intercooler and is used for supercharging outside air to form high-temperature and high-pressure gas and cooling the high-temperature and high-pressure gas so as to convey the high-temperature and high-pressure gas to an engine intake manifold; the cold and heat energy coupling area, a channel between the gas cylinder and the vaporizer and a channel between the supercharger and the intercooler penetrate through the cold and heat energy coupling area so that heat exchange can be conducted between the high-temperature and high-pressure air and LNG. Cold and heat exchange can be achieved through LNG cold energy and the pressurization pipeline, meanwhile, the vaporization efficiency is improved, and the heat dissipation burden of the intercooler is relieved.

A methane and hydrogen injection device is provided. The methane and hydrogen injection device includes a first methane injector, a second hydrogen injector, a single common injection pipe. The injectors are associated together so as to produce a mixture of methane and hydrogen with a variable concentration ratio, and the common injection duct is shaped to be operatively connected to an intake manifold of a spark-ignition internal combustion engine.

A cold plate assembly includes a cold plate having first surface attachable to heat generating electronic component(s) and opposite second surface enclosed by an encapsulating lid that has inlet and exhaust ports. A distributed impingement and recovery manifold (DIRM) is positioned above the second surface of the cold plate. The DIRM includes an intake manifold presenting at least one sequence of nozzle openings providing direct impingement of cooling liquid on corresponding sections of the second surface and a return manifold which facilitates a return of exhaust cooling liquid to the exhaust port following at least one direct impingement of the portion of cooling liquid onto the corresponding sections to provide distributed, localized impingement cooling at corresponding sections of the cold plate.

The present invention relates to a diagnostic method for coupled exhaust gas turbochargers (10, 20) in an internal combustion engine (1), and to a diagnostic system for carrying out the diagnostic method according to the invention. According to the diagnostic method according to the invention, a first boost pressure is measured in a first charge air system (10a) of a first exhaust gas turbocharger (10) upstream of a first throttle valve (13), which leads to a first intake manifold (14) of a first cylinder bank (15), and a second boost pressure is measured in a second charge air system (20a) of a second exhaust gas turbocharger (20) upstream of a second throttle valve (23), which leads to a second intake manifold (24) of a second cylinder bank (25). Subsequently, a deviation between the first boost pressure and the second boost pressure is determined.Furthermore, the determined deviation is compared against a defined error threshold and an error message is issued if the deviation of the two boost pressures is greater than the error threshold.

The invention relates to the technical field of hybrid power vehicles, in particular to a water bleeding and fire catching pre-control method and device for a vehicle exhaust gas recirculation system, and the method comprises the steps that in the operation process of a hybrid power engine of a vehicle, the water bleeding amount caused by EGR condensation under the normal pressure state is obtained; the temperature difference and the pressure difference before and after the intercooler are detected, and the saturated water content of the pressurized mixed gas is calculated in combination with the actual saturated vapor pressure, so that the water precipitation amount in the intake manifold is obtained; based on the temperature difference and the pressure difference, the water precipitation grade of the water precipitation amount in the intake manifold is determined, and according to the water precipitation amount, the water precipitation grade and the water precipitation amount in the intake manifold, an active intervention action of a hybrid vehicle control unit of the vehicle for water precipitation fire pre-control is generated. Therefore, the problems that in the related technology, due to the fact that formation of condensate water is reduced or the EGR rate is reduced to improve the combustion stability of an engine by controlling an EGR valve, the engine is prone to misfire, and the use requirement of a user in an actual scene is difficult to meet are solved.

1. The name of this design product: double-cavity volute structure intake manifold assembly. 2. Application of this design product: used in automobile engine air intake system. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

Internal combustion engine (1) with at least one combustion chamber (2), at least one prechamber (3) for the at least one combustion chamber (2) and an intake system (4), wherein the intake system (4) comprises : - a liquid fuel supply (9) configured to provide a liquid fuel, - an air-fuel-mixer (10) mixing air with liquid fuel from the liquid fuel supply (9) and providing an air-fuel- mixture, - a combustion chamber intake manifold (7) leading into the at least one combustion chamber (2) and - a prechamber intake manifold (8) leading into the at least one prechamber (3), wherein the air-fuel-mixer (10) is part of the prechamber intake manifold (8) for admixing the liquid fuel to the air in the prechamber intake manifold (8).

The invention relates to a crankcase forced ventilation system and a control method thereof, a supercharged engine and a vehicle, and belongs to the technical field of engines. The crankcase forced ventilation system comprises an air inlet system of an engine, a first ventilation pipeline and a second ventilation pipeline, the air inlet system comprises an air filter, a supercharger, a throttle valve and an air inlet manifold which are sequentially communicated through pipelines, the air inlet system is communicated with an air cylinder of the engine through the air inlet manifold, and the first end of the first ventilation pipeline is communicated with a crankcase; the first ventilation pipeline is provided with a first crankcase forced ventilation PCV valve, the second ventilation pipeline is provided with a second crankcase forced ventilation PCV valve, the first end of the second ventilation pipeline is communicated with the crankcase, the second end of the second ventilation pipeline is communicated with a pipeline connected between the supercharger and the air filter, and the second ventilation pipeline is provided with a vacuum pump. When the engine is in various working conditions, waste gas in the crankcase can be smoothly circulated while the pressure in the crankcase is small.

The utility model belongs to the technical field of hydraulic pipe cleaning, and particularly discloses a hydraulic pipeline oil string washing device which comprises an oil tank, an oil supply pipeline, an oil inlet pipeline, an oil return pipeline and a cooling loop. The oil supply pipeline comprises a lightering oil pump, an oil supply valve and an oil supply main pipe; the oil inlet pipeline comprises a circulating oil pump, a first oil inlet header pipe and a first oil inlet control valve are arranged between the oil tank and the circulating oil pump, and a second oil inlet header pipe, a one-way valve and a second oil inlet control valve are arranged between the circulating oil pump and the cleaned pipeline system; the oil return pipeline comprises a fine filter, a first oil return header pipe is arranged between the cleaned pipeline system and the fine filter, a second oil return header pipe is communicated between the fine filter and the oil tank, first oil outlet control valves are arranged on the first oil return header pipe and the second oil return header pipe, the fine filter is further communicated with an impurity removal control valve, and the impurity removal control valve is communicated with an impurity removal header pipe. According to the device, safe and reliable cleaning can be provided for pipeline systems with different pressure bearing and precision requirements, and the oil temperature can be controlled to achieve the optimal cleaning effect.

To calculate an in-cylinder gas temperature at each time point in a compression process of a reciprocating internal combustion engine.SOLUTION: A temperature Tinit of newly suctioned gas is calculated based on a linear combination equation consisting of an intake gas temperature Tbin in an intake manifold, a cooling water temperature Twater, a specific power kPW, and constant terms: Tinit=C1×Tbin+C2×Twater+C3×kPW+C4, C1, C2, C3, C4: constants. A gas temperature Tivc in the cylinder when an intake valve closes is calculated based on the new gas temperature Tinit, and the residual gas temperature Tegrin from the previous cycle. A gas temperature Tca in the cylinder at each time point during a compression process is calculated based on the gas temperature Tivc in the cylinder when the intake valve closes, and a crank angle ca.SELECTED DRAWING: Figure 2

A computing device includes a plurality of rear inlet disconnects extend from the rear side of the housing. The rear inlet disconnects are operable to be fluidly coupled with a rack manifold and receive fluid from the rack manifold. The rear inlet disconnects include a rear-to-front disconnect and a rear-to-cooling disconnect. A front inlet manifold is coupled with the housing and includes at least one front inlet disconnect operable to be fluidly coupled with one or more inlet cooling disconnects extending from the front side of the housing. The inlet cooling disconnects are operable to be fluidly connected with the liquid cooling system. An inlet transmission tube is coupled with an outside surface of the housing. The inlet transmission tube in fluid communication with the rear-to-front disconnect and operable to direct the fluid from the rear-to-front disconnect to the front inlet manifold.

The invention relates to the technical field of vehicles, in particular to a fuel desorption device and system, a vehicle and a control method of the fuel desorption system.The fuel desorption device comprises a desorption pump used for conducting desorption treatment on fuel steam of a fuel tank; the condenser is used for condensing the fuel oil steam subjected to desorption treatment to obtain liquefied fuel oil; and the conveying assembly is used for conveying the liquefied fuel oil to a high-pressure oil pump of the engine. Therefore, the problems that in the prior art, due to the fact that each air inlet manifold of a fuel desorption device is connected with a desorption pipeline, uneven air inlet of an engine cylinder is likely to be caused for a multi-cylinder engine, and then the working efficiency and stability of the engine are affected are solved.

The utility model provides a modular data center dry cooler, which relates to the field of dry coolers and includes several heat dissipation devices; the heat dissipation devices include a base, a bottom plate, a front plate, a rear plate, a top plate, two partition-type radiators and a fan; a vent is provided on the top plate; the fan is located above the vent; the two partition-type radiators are respectively located on the left and right sides of the top plate; the top plate, the bottom plate, the front plate and the rear plate are all detachably fixed to the partition-type radiators; all heat dissipation devices are closely arranged along the front-to-back direction; it also includes two liquid inlet main pipes and two liquid outlet main pipes; the liquid inlet main pipes and the liquid outlet main pipes are arranged on the left and right sides of the heat dissipation device; the partition-type radiator includes a core, an upper head and a lower head; the upper head is connected to the adjacent liquid inlet main pipe; the lower head is connected to the adjacent liquid outlet main pipe. The utility model can solve the problem of the prior art that the entire dry cooler cannot be used when the coil is damaged by external factors due to the integration of the coil, thereby improving the risk resistance of the dry cooler.

Described is a mixer for a chromatography system. The mixer includes an inlet manifold channel, an outlet manifold channel and a plurality of transfer channels. The inlet manifold channel has an inlet at a proximal end of the inlet manifold channel for receiving an inlet flow. The transfer channels are fluidly connected between the inlet and outlet manifold channels. The respective fluid connections are distributed along each of the inlet and outlet manifolds channels. The transfer channels have different volumes. The mixer may be formed of a plurality of layer and the layers may be diffusion bonded to each other.

The invention provides an engine control method and device, a computer readable storage medium and a vehicle. The method comprises the steps that under the condition that an engine is in an idling working condition, the opening degree of an exhaust gas recirculation valve of the engine and the opening degree of a throttle valve of the engine are adjusted to the corresponding preset opening degrees correspondingly; the idling working condition is the working condition of non-load operation of the engine; after the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are adjusted to the corresponding preset opening degrees correspondingly, the pressure of an intake manifold of the engine is obtained; under the condition that the pressure of the intake manifold is smaller than or equal to the pressure threshold value, the opening degree of the exhaust gas recirculation valve and the opening degree of the throttle valve are increased, so that the pressure of the intake manifold is larger than the pressure threshold value, and the problem that in the prior art, the engine oil consumption generated by pumping engine oil is high due to the fact that the pressure of the intake manifold is low under the engine idling working condition is solved.

A fuel cell system capable of efficiently drain water and reducing the amount of water in exhaust gas, the fuel cell system includes a case and a fuel cell stack; the case houses the fuel cell stack; wherein the fuel cell stack is a stack of unit cells; wherein the unit cells are stacked at an angle of from 10° to 80° with respect to the horizontal direction; the fuel cell stack comprises a reaction air inlet manifold, a reaction air outlet manifold, a hydrogen inlet manifold and a hydrogen outlet manifold; the hydrogen inlet manifold is disposed above the hydrogen outlet manifold in the gravitational force direction; and wherein the reaction air inlet manifold is disposed above the reaction air outlet manifold in the gravitational force direction.