3830 results about "Internal combustion engine" patented technology

A valve timing control device includes: a unit for calculating a target valve timing for one of an intake valve and an exhaust valve in accordance with an operational state; a unit for detecting an actual valve timing of one of the intake valve and the exhaust valve; an actual valve timing control unit for generating a controlled variable for the VVT based on a difference between the target valve timing and the actual valve timing; a unit for learning a learning value of the controlled variable required for maintenance of the actual valve timing based on an integral correction value; and a unit for detecting a malfunction in a VVT from an amount of a shift in the actual valve timing when learning is not completed yet, and for detecting a malfunction in the VVT from the difference when learning is already completed.

The present invention relates, in general, to systems and methods for generating hydrogen from ammonia on-board vehicles, where the produced hydrogen is used as fuel source for an internal combustion engine. The present invention utilizes an electric catalyst unit operating in series with a plate-type heat exchange catalyst unit. The electric catalyst unit is used to initiate an ammonia cracking process on-board during a cold start or low load operating condition of the internal combustion engine, where the ammonia cracking process occurs in the heat exchange catalyst unit once exhaust gas from the internal combustion engine has been heated to a threshold temperature suitable to perform the ammonia cracking process.

The invention discloses a high-horsepower fuel oil dune buggy gas supply assembly, and belongs to the technical field of internal combustion engine gas inlet systems, the high-horsepower fuel oil dune buggy gas supply assembly comprises an outer cover, a sealed space is limited in the outer cover, and the outer cover is provided with a gas inlet head and a gas exhaust head; the inner container is arranged in the sealed space of the outer cover, and the inner container comprises a first inner shell and a second inner shell; and the pumping piece is arranged in the first inner shell and used for pressurizing air and pumping the air to the second inner shell. Through optimization of the overall structure, high-pressure airflow is generated through the pumping piece, air is physically separated into cold air and hot air in the vortex chamber, and cold air far lower than the environment temperature can be actively provided for an engine without any refrigerant and a complex compressor; the problems that the fuel oil dune buggy is low in inflation efficiency and high in detonation risk in a high-temperature environment are solved, strong, stable and continuous power is output, and power attenuation of the high-horsepower fuel oil dune buggy caused by high-temperature protection of an engine is relieved.

A mixing section for an exhaust system of an internal combustion engine comprises a mixing section housing (16) through which exhaust gas (A) flows in a main exhaust gas flow direction (H), and a tubular mixing body (18) arranged in the mixing section housing (16) and extending in the direction of a longitudinal axis (L) of the mixing body, wherein the mixing body (18) defines a first flow volume (24) through which exhaust gas (A) flows radially outwards and defines a second flow volume (26) through which exhaust gas (A) flows radially inwards, wherein the mixing body (18) has a tubular first mixing body part (20) extending in the direction of the longitudinal axis (L) of the mixing body and at least one extension in the direction of the longitudinal axis of the mixing body on an outer surface (32) of the first mixing body part (20) facing the second flow volume (26) or on an inner surface (30) of the first mixing body part (20) facing the first flow volume (24). (L) extending,a tubular second mixing body part (34), wherein the second mixing body part (34) has a plurality of first projections (36) arranged adjacent to one another in the direction of the longitudinal axis (L) of the mixing body and in the circumferential direction around the longitudinal axis (L) of the mixing body and directed towards the first mixing body part (20), and wherein the second mixing body part (34) bears against the first mixing body part (20) in the region of at least a part of the first projections (36), preferably all of the first projections (36).

A generator module for a vehicle includes a housing arranged for fixing to a combustion engine, a stator fixed in the housing, a rotor, rotatable within the stator and arranged for driving connection with the combustion engine, and a damper arranged in a torque path between the combustion engine and the rotor for damping torsional vibrations from the combustion engine.

The invention relates to a methanol internal combustion engine high-temperature fuel cell hybrid power system based on double-path waste heat gradient utilization. The invention relates to the technical field of internal combustion engine waste heat recovery and new energy power system integration. The system comprises a fuel tank, a first pump body, a heat exchanger, a methanol internal combustion engine, a turbine, a gas compressor, an air compressor, a reformer, a high-temperature proton exchange membrane fuel cell, an evaporator and a second pump body. A methanol-water vapor mixture generated by heat exchange of a mixed solution of methanol and water and a high-temperature fuel cell stack coolant in a heat exchanger is introduced into a reforming reactor and is subjected to catalytic reforming to produce hydrogen by utilizing waste heat of high-temperature tail gas of an engine, and the produced hydrogen is directly supplied to an anode of a high-temperature fuel cell. Through a double-path methanol distribution strategy, collaborative design of internal combustion engine waste heat recovery, electric pile heat management and reforming hydrogen production is realized, and the comprehensive energy efficiency of the system is improved.

In order to allow an analyzer to be calibrated or a sampling channel to be purged without removing a sampling probe from a sampling location, provided are a sampling channel through which an exhaust gas from an internal combustion engine flows, an analyzer that is connected to the sampling channel and analyzes the exhaust gas, a diluter provided upstream of the analyzer in the sampling channel, a recirculated channel that branches from a branch point set between the analyzer and the diluter in the sampling channel and joins the diluter, a pump that is provided in the recirculated channel and guides part of the exhaust gas from the branch point to the diluter, an additional channel that is connected to the recirculated channel or the sampling channel and through which a calibration gas or a purge gas flows, and an opening and closing mechanism provided in the additional channel.

The invention discloses an internal combustion engine in-cylinder transient self-adaptive exposure control method based on FPGA acceleration, and belongs to the technical field of internal combustion engine endoscopic visualization. In order to solve the technical problem of image overexposure or underexposure caused by violent illumination change in the combustion process in an internal combustion engine cylinder, a real-time exposure detection unit is fused with a camera built-in sensor and an endoscope added sensor to monitor light intensity data; the adaptive exposure control unit accelerated by the FPGA adopts adaptive PID control and fuzzy logic control to generate a parameter adjustment direction, the adaptive PID dynamically adjusts gain based on a machine learning model, and the fuzzy logic outputs a decision according to a fuzzy rule base of brightness, light intensity and errors; the parameter adjusting unit adjusts the aperture size, the shutter speed and the light sensitivity in a linkage mode according to the target and actual gray scale difference value, and millisecond-level multi-parameter exposure control is achieved. Overexposure of a highlight area and loss of details of a low-light area are effectively avoided, and stable and clear images are obtained in the whole combustion process.

The invention discloses a virtual sensing method for thermal characteristics of an internal combustion engine. The method comprises the following steps: S1, acquiring temperature distribution data; s2, time sequence temperature data mapping; s3, acquiring fusion temperature data; s4, obtaining thermal characteristics; and S5, abnormal judgment of a combustion chamber, an exhaust pipeline and a cooling system. According to the method, the comprehensiveness and the accuracy of thermal state analysis are remarkably improved by constructing a global sensing system of a three-dimensional space temperature field of the internal combustion engine and combining a multi-source sensor collaborative acquisition and deep learning feature fusion mechanism. Through closed-loop coupling of time-space sequence temperature data and a thermodynamic mechanism model, quantitative correlation between thermal characteristics and combustion efficiency, heat energy loss and cooling efficiency core performance parameters is established. According to the LSTM-CNN-MLP collaborative framework, the spatio-temporal evolution law of a temperature field is extracted in a self-adaptive mode, and the robustness of thermodynamic state perception is remarkably enhanced.

The invention discloses an internal combustion engine crankshaft quenching finish machining process optimization control system, which comprises a multi-source process data acquisition module used for acquiring multi-source process data and generating a standardized input sample set; the Prophet model building module is used for building an improved Prophet model and outputting a predicted value, a predicted residual error and a confidence interval; the black swan optimization module is used for performing global optimization on the model and updating model parameters; the prediction execution module is used for generating a dynamic change trend of quenching current, scanning speed and cooling flow; the multi-target constraint solving module is used for determining an optimal control parameter combination; and the self-adaptive control module is used for applying the optimal control parameter combination to an actual process and executing adjustment according to a time rolling period. By fusing the improved Prophet model and the black swan optimization algorithm, intelligent prediction, parameter optimization and self-adaptive control in the quenching finish machining process of the crankshaft of the internal combustion engine are achieved.

A hybrid system for use with utility vehicles includes an electric motor including an output shaft and a conductor configured to alternatively receive power from or send power to an electrical power source. The hybrid system includes an internal combustion engine, a first pulley connected to and rotated by the internal combustion engine, and a clutch mechanism. The clutch mechanism includes a ratchet connected to the output shaft of the electric motor to rotate at a first rotational speed, a pawl carrier driven by the internal combustion engine to rotate at a second rotational speed, and one or pawls coupled to and configured to rotate with the pawl carrier. The one or more pawls are configured to be disengaged from the ratchet when the first and second rotational speeds differ and engaged with the ratchet when the first and second rotational speeds are equal.

The invention relates to the technical field of fuels and additives thereof, in particular to an alcohol fuel with a catalytic effect and an additive thereof.The alcohol fuel with the catalytic effect comprises C1-C7 alcohol and hydrocarbon, and a rare earth compound catalytic material is used in the fuel; the rare earth compound comprises a hydroxyl group or a phenyl group or a C5-C25 group or a carboxyl group or an amino group or a metal, the alcohol fuel is high in formula calorific value adjustable calorific value, can well adapt to an internal combustion engine or an engine for testing the alcohol fuel, is a novel alternative energy with potential, and can be used for preparing the alcohol fuel. The environmental protection problem of fossil fuel is solved, and the fuel efficiency is accelerated.

A diesel engine crankshaft residual stress and deformation relation prediction method belongs to the technical field of internal combustion engine key component manufacturing. The method comprises the steps of dynamically correcting a finite element model through multi-stage measured data, performing high-precision reconstruction of a crankshaft residual stress field, establishing a quantitative relation between stress distribution and deformation, and combining numerical simulation and response surface method optimization to realize high-precision residual stress distribution prediction. And further analyzing the release and redistribution rules of the residual stress in the material removal process. Residual stress distribution is actively controlled to prolong fatigue life, and stable production of high-precision and long-life crankshafts is ensured. The grinding feeding rate is reduced through active control over residual stress in the grinding process so that the tensile stress peak value in the layer depth direction can be reduced, and meanwhile it is guaranteed that the surface roughness is within a proper interval. A gradient cooling strategy is adopted, the cooling liquid flow is increased in the initial grinding stage, and surface layer thermal stress accumulation is restrained. And the grinding wheel linear speed is controlled, and grinding efficiency and residual stress inhibition requirements are balanced.

A motor vehicle (10) with an electric and / or internal combustion engine drive is described, wherein the motor vehicle (10) comprises: a refrigeration system (12) with a refrigerant circuit (14); a storage compartment (18) arranged in a front area (VB) of the motor vehicle (10), in particular on a passenger side; wherein the refrigerant circuit (14) comprises a refrigerant compressor (22), a first heat exchanger (24), in particular a gas cooler or condenser, and a second heat exchanger (26), in particular an evaporator, wherein the second heat exchanger (26) and the refrigerant compressor (22) are connected to each other by a first low-pressure-side refrigerant line section (28-1).It is provided that a second low-pressure-side refrigerant line section (28-2) is arranged between the second heat exchanger (26) and the refrigerant compressor (22), which is arranged parallel to the first refrigerant line section (28-1) in terms of flow technology, wherein the second refrigerant line section (28-2) is designed such that it is arranged at least partially along at least one boundary wall (18b) of the storage compartment (18) in such a way that heat can be extracted from a storage compartment interior (18i).

The invention relates to the technical field of hydrogen internal combustion engines, and discloses a hydrogen internal combustion engine power generation system and method based on AI control, and the system comprises the following modules: a receiving module which is used for receiving an operation instruction from a driver, and the operation instruction comprises an expressway power generation instruction and a static charging instruction; the coupling control module comprises a processor unit and an AI control unit; the processor unit is responsible for data transmission operation; the AI control unit is used for receiving the operation instruction, responding to the operation instruction and controlling operation of a vehicle-mounted generator; and the vehicle-mounted generator is connected with the coupling control module and is used for converting hydrogen energy into electric energy. The invention discloses an AI-controlled hydrogen internal combustion engine power generation system and method, and mainly solves the problems of low energy utilization efficiency, poor operation flexibility and incapability of effectively relieving mileage anxiety caused by the fact that a vehicle-mounted range extender of an existing electric vehicle is passively started only by depending on a preset charging state threshold value of a main battery and does not consider the intention of a driver and a stroke situation.

The present invention relates to a Glycol based antifreeze liquid composition for combustion engines, electric vehicles, industrial and submersible motors. More particularly, the present invention relates to a Glycol based corrosion-inhibited antifreeze liquid composition, the said liquid composition comprises glycols, deionized water, alkali molybdate, alkali metal octoate or neodecanoate, rare-metal octoate or neodecanoate, dyes. The liquid composition of the present invention is environment-friendly, ready to use composition that will improve efficiency of combustion engines, industrial and submersible motors to the great extent and also provides excellent corrosion protection to the internal parts of the cooling system of combustion engines, electric vehicles and industrial and submersible motors.

An exhaust aftertreatment system (10) in the exhaust stream of an internal combustion engine (12) that is at least partially powered by an alcohol fuel is permeable to an exhaust stream containing nitrogen oxides as well as an alcohol and / or formaldehyde. The exhaust aftertreatment system (10) comprises a metering device (14) for metering ammonia into the exhaust stream, a first SCR catalyst (16), and a second SCR catalyst (18), wherein the first SCR catalyst (16) is arranged in the exhaust stream downstream of the metering device (14) and is configured to generate a treated exhaust stream from the exhaust stream of the internal combustion engine (12) that contains nitrogen oxides and at least one nitrogen-containing hydrocarbon compound.The second SCR catalyst (18) is arranged in the exhaust stream downstream of the first SCR catalyst (16) and is designed to reduce the nitrogen oxides contained in the generated treated exhaust stream by consuming the nitrogen-containing hydrocarbon compound contained in the generated treated exhaust stream. Furthermore, a method for exhaust aftertreatment and the use of an exhaust aftertreatment system (10) are specified.

There is described a method and system for carbon dioxide capture using temperature-swing adsorption. First and second, respectively third and fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) are provided that are operable in alternate adsorption and desorption cycles to capture and remove water and carbon dioxide, respectively, from the exhaust gas, each of the temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) including a sorbent bed (AD) and a heat exchanger structure (HEX) thermally coupled to the sorbent bed (AD). Hot exhaust gas coming from the internal combustion engine (ICE) is routed through the heat exchanger structure (HEX) of that one (TSAD1; TSAD2) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes a desorption cycle, to sustain desorption of water adsorbed by the sorbent bed (AD) thereof, as well as through the heat exchanger structure (HEX) of that one (TSAC1; TSAC2) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes a desorption cycle, to sustain desorption of carbon dioxide adsorbed by the sorbent bed (AD) thereof. The exhaust gas is furthermore cooled to produce cold exhaust gas, at least part of which is routed through the sorbent bed (AD) of that one (TSAD2; TSAD1) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes an adsorption cycle, to cause adsorption of water by the sorbent bed (AD), and then through the sorbent bed (AD) of that one (TSAC2; TSAC1) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes an adsorption cycle, to cause adsorption of carbon dioxide by the sorbent bed (AD). Operation of the first to fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) is then switched from the desorption cycle to the adsorption cycle, and vice versa, and the process is cyclically repeated.

An exhaust aftertreatment system (10) in the exhaust stream of an internal combustion engine (12) that is at least partially powered by an alcohol fuel is permeable to an exhaust stream from the internal combustion engine (12) containing nitrogen oxides as well as an alcohol and / or formaldehyde. The exhaust aftertreatment system (10) comprises an oxidation catalyst (14) for removing methanol and formaldehyde from the exhaust stream, an SCR catalyst (18), and a metering device (16) for metering ammonia into the exhaust stream, wherein the oxidation catalyst (14) is arranged in the exhaust stream upstream of the SCR catalyst (18). The metering device (16) is arranged in the exhaust stream upstream of the SCR catalyst (18) and upstream or downstream of the oxidation catalyst (14). Furthermore, a method for exhaust aftertreatment and the use of the exhaust aftertreatment system (10) are specified.

The invention discloses an in-cylinder combustion process and chemical reaction mechanism-based hydrogen ammonia emission generation prediction system and method, and relates to the technical field of hydrogen internal combustion engine tail gas emission control, and the system comprises an input variable acquisition module, a combustion simulation module, a chemical reaction simulation module, an emission generation prediction module and an output interface module; according to the method, a mechanism-driven multi-physics field coupling prediction system is constructed, the simplified assumption limitation of a traditional empirical model is broken through, high-precision dynamic analysis of the emission characteristics of the hydrogen-ammonia engine is achieved, in combustion process simulation, in-cylinder turbulence mixing and flame propagation details are accurately described by using a CFD model, and in-cylinder combustion simulation is achieved. The chemical reaction module can significantly improve the prediction credibility of unburned fuel residues and pollutant generation through sensitivity analysis and mechanism optimization, in addition, through real-time coupling sensor data and simulation calculation, the abnormal emission trend can be pre-judged in advance, and a feedforward control basis is provided for the ammonia injection amount, the EGR rate and the ignition angle.

An exhaust gas carbon dioxide capture and recovery system for an internal combustion engine includes a Mobile Carbon Capture (MCC) system and an absorption heat transformer. The MCC system captures carbon emissions of a first exhaust of the internal combustion engine and includes an exhaust absorber and a stripper. The exhaust absorber extracts at least a portion of carbon dioxide from the first exhaust using a lean solvent stream, and produces a rich solvent stream and a second exhaust having a reduced amount of carbon dioxide. The lean solvent stream includes a solvent selective for absorbing carbon dioxide, and the rich solvent stream includes the solvent and absorbed carbon dioxide. The stripper converts the rich solvent stream into the lean solvent stream and a crude carbon dioxide vapor. The absorption heat transformer provides heat to the stripper by generating a high temperature stream from a heat content of a coolant.

An ignition diagnostic system and method for evaluating and optimizing the ignition performance of internal combustion engines (ICEs), such as those that burn hydrogen (H2) and / or other fuels. According to one example, the ignition diagnostic system and method use an artificial intelligence (AI) model with one or more machine learning (ML) algorithm(s) to identify, predict and / or otherwise evaluate abnormal combustion events, and to provide such information to an electronic control unit (ECU) in real-time. The ECU, in turn, can make combustion-related modifications to one or more components of the ignition system to optimize performance. By integrating the AI model into the ignition diagnostic system and method, a fast and simplified solution is provided that can be implemented across a wide variety of ICEs, including those that burn alternative fuels, where detecting abnormal combustion events and monitoring combustion-related parameters can be important.

A refuse vehicle includes a vehicle body on a chassis having a frame, an internal combustion engine (ICE), and a transmission coupling the ICE with a plurality of tractive elements. The vehicle body includes an electrically powered body system and a hydraulically powered body system. A first power module is coupled with the ICE and is configured to provide rotary power to a hydraulic pump that is configured to provide hydraulic power to the hydraulically powered body system. A second power module is coupled with the transmission and configured to rotationally couple and decouple an electrical generator with the transmission. The generator is configured to charge at least one battery when rotationally coupled with the transmission. The battery is configured to provide electrical power to the electrically powered body system.

The invention provides a hydrogen ammonia internal combustion engine waste heat-power grid cooperative peak regulation control method and device, and belongs to the technical field of peak regulation control. The method comprises the steps that a generated power curve in a future preset time period is acquired; aiming at each time step, determining target internal combustion power generation power corresponding to the generator set and target waste heat power generation power corresponding to the waste heat recovery power generation unit at the time step based on the target power generation power corresponding to the time step; when any time step in the preset time period is reached, the hydrogen ammonia internal combustion engine is controlled based on the target internal combustion power generation power corresponding to the generator set at the time step; acquiring actual internal combustion power generation power and actual waste heat power generation power corresponding to the time step; and target internal combustion power generation power corresponding to the generator set at the time step is adjusted based on the internal combustion power generation deviation and the waste heat power generation deviation, and the hydrogen ammonia internal combustion engine is controlled within the time step based on the adjusted target internal combustion power generation power. According to the invention, waste heat peak regulation control can be realized.

The invention discloses a method and system for calculating the excess air coefficient of a pure hydrogen fuel internal combustion engine, and the method comprises the steps: obtaining the oxygen concentration in the intake air of the pure hydrogen fuel internal combustion engine; and the hydrogen concentration, the oxygen concentration and the nitric oxide concentration in exhaust gas of the pure hydrogen fuel internal combustion engine are obtained. And calculating the excess air coefficient of the pure hydrogen fuel internal combustion engine by solving a material balance equation set according to the oxygen concentration in the intake air and the hydrogen concentration, the oxygen concentration and the nitric oxide concentration in the exhaust. Therefore, according to the calculation method for the excess air coefficient of the pure hydrogen fuel internal combustion engine, the calculation accuracy of the excess air coefficient is improved, and therefore the combustion efficiency and the emission control effect of the hydrogen internal combustion engine are optimized.

To achieve advantageous secondary air injection. [Solution] The present invention relates to a secondary air valve (64) for a secondary air system (52) of an internal combustion engine (10), the secondary air valve (64) comprising a valve housing (66) through which secondary air can pass to be delivered into an exhaust gas flow path (22) of the internal combustion engine (10), the valve housing (66) having an inlet opening (72) through which the secondary air can be delivered into the valve housing (66) and a housing space (68), and an outlet opening (76) through which the secondary air can be discharged from the valve housing (66), and the secondary air valve (64) also comprises a valve element (78), the valve element (78) comprising: The valve element (78) is movable along a direction of movement (80) between a closed position (S) in which the outlet openings (76) are closed and an open position (O) in which at least one outlet opening (76) is open, and the inlet opening (72) is disposed along the direction of movement (80) between two sealing elements (90, 92) by which the valve element (78) is sealed, and the valve element (78) does not have any surfaces passing obliquely or perpendicularly to the direction of movement (80) over the entire extent (ER) of the valve element (78) passing along the direction of movement (80) between the sealing elements (90, 92), at least in the closed position (S).

A controller is configured to control an internal combustion engine mounted on a vehicle. The controller includes processing circuitry. The processing circuitry outputs a valve closing signal to a shut-off valve, and executes, when a stopping operation of the internal combustion engine is performed, a determination process of determining whether the shut-off valve is stuck open based on a decrease amount of a passage fuel pressure. The controller does not execute the determination process when at least one of a condition that a vehicle speed is higher than a first determination speed and a condition that an engine rotation speed is higher than or equal to a second determination speed is met.

A sound damper for an exhaust gas system of an internal combustion engine includes a sound damper housing, at least one intermediate wall which is arranged in a housing interior and at least one sound damper connection pipe. The sound damper connection pipe is supported in a first pipe end region on the sound damper housing and is arranged in a second pipe end region on a support element which is arranged in the housing interior. The support element forms an integral component of an intermediate wall. The sound damper connection pipe introduces exhaust gas into the housing interior or directs exhaust gas out of the housing interior.

This invention relates to a vermicular cast iron alloy with high mechanical strength and thermal conductivity requirements to replace the conventional gray and vermicular cast irons and introduces a manufacturing process for high mechanical strength and thermal conductivity vermicular cast iron alloy and internal combustion engine parts produced from said alloy. The alloy includes carbon, manganese, tin, copper, molybdenum, silicon, magnesium, rare earths, chromium, titanium, niobium, vanadium, tungsten, phosphorus, sulfur, aluminum, and nickel. The alloy has a graphite microstructure consisting of up to 70% of vermicular particles and up to 30% of nodular particles in area, with a matrix in area up to 80% pearlitic and up to 20% ferritic, with presence of segregating carbides of up to 1%.

An internal combustion engine includes a fuel tank, a fuel injection valve, a fuel passage, a shut-off valve disposed in the fuel passage, and a pressure sensor that detects a passage fuel pressure that is a pressure of fuel in a portion of the fuel passage between the shut-off valve and the fuel injection valve. The controller outputs a valve closing signal to the shut-off valve, and executes a determination process of determining whether the shut-off valve is stuck open based on a decrease amount of the passage fuel pressure that occurs until an elapsed period after the valve closing signal is output reaches a predetermined specified period. The controller excludes, from the elapsed period, a period in which a fuel cutoff process for stopping fuel injection by the fuel injection valve during operation of the internal combustion engine is executed.