642results about "Exhaust gas recirculation" patented technology

A cooling system for vehicles and a control method thereof improves indoor heating performance and fuel efficiency by controlling a flow rate of a coolant passing through a heater core together with an EGR cooler. A coolant having an increased temperature is first supplied to the heater core side through a flow stagnancy control to rapidly increase the temperature of the coolant flowing in the heater core, thereby improving heating performance. A warm-up feature is improved through an exhaust heat recovery function by a heat exchange between the exhaust gas and the coolant in the EGR cooler, thereby improving efficiency of fuel.

An exhaust gas recirculation mixer according to certain embodiments is operable to receive a first fluid via a first fluid intake and to receive a second fluid via a second fluid intake. One of the first fluid or the second fluid comprises air, and the other of the first fluid or the second fluid comprises exhaust gas. The exhaust gas recirculation mixer generally includes a plurality of mixing passages and a plurality of multi-path nozzles. Each mixing passage includes a corresponding and respective throat. Each multi-path nozzle generally includes an outer nozzle fluidically connected to the first fluid intake, and an inner nozzle fluidically connected to the second fluid intake. The inner nozzle is nested within the outer nozzle and projects into the throat of a corresponding and respective mixing passage.

The invention discloses a detection and calibration device and method for clamping stagnation of an EGR (Exhaust Gas Recirculation) valve, and the method comprises the steps: firstly, dismounting the EGR valve of an engine, and dismounting the EGR valve into an actuator and a valve body; the first component is installed on the original installation face, in butt joint with the valve body, of the actuator, and the distance between the plane at one end of a push rod of the actuator and the installation plane of the actuator is adjusted and fixed to any numerical value; the second component is installed on the original installation face, where the actuator is installed, of the valve body, and the distance between the end face, connected with the bowl body, of the adjusting bolt unit and the installation face of the valve body is adjusted to be equal to the distance between the plane at one end of a push rod of the actuator and the installation plane of the actuator; and then detection is carried out according to an EGR valve clamping stagnation fault test method. According to the detection and calibration device and method for clamping stagnation of the EGR valve, the EGR valve cannot be damaged in the EGR valve detection process, and clamping stagnation faults can be set randomly in the stroke of the EGR valve.

The invention discloses a method for actively regulating and controlling the temperature of an exhaust pipe under the sliding working condition of an engine, and relates to the engine control technology, the current working condition of the engine is recognized, and if the current working condition is the sliding working condition, an exhaust temperature increasing regulation and control mode is started; according to the exhaust temperature increasing regulation and control mode, a temperature rise demand target is calculated according to the temperature difference value between the current exhaust temperature of an exhaust pipe of the engine and the set target exhaust temperature, and a temperature rise control strategy is selected according to the temperature rise demand target and executed. The invention further discloses a system for actively regulating and controlling the temperature of the exhaust pipe under the engine sliding working condition. The exhaust temperature in the sliding process is increased, the cold and hot temperature difference of the exhaust pipe is reduced, and therefore the reliability of the exhaust pipe is improved.

According to certain embodiments, a method generally involves mixing exhaust gas and air in an exhaust gas recirculation mixer. The method includes directing exhaust gas from the engine to the mixing tube along a first flow path, and directing air to the mixing tube along a second flow path. One of the first flow path or the second flow path is an outer flow path, and the other of the first flow path or the second flow path is an inner flow path surrounded by the outer flow path. The first flow path and the second flow path merge within the throat of the mixing tube such that the exhaust gas and the air mix within the mixing tube to provide a mixture of the exhaust gas and the air.

An exhaust gas recirculation mixer according to certain embodiments includes a chamber through which a first fluid is operable to flow in a downstream direction toward a mixing passage. The chamber is fluidically connected with the mixing passage via a first nozzle, and the mixing passage extends along a longitudinal axis defining the downstream direction and an upstream direction opposite the downstream direction. The exhaust gas recirculation mixer further includes a second nozzle and a fuel nozzle. The second nozzle extends into the mixing passage and is configured to direct a second fluid toward the mixing passage. The second nozzle comprises a second nozzle outlet portion circumferentially surrounded by the first nozzle. The fuel nozzle comprises a fuel nozzle outlet portion configured to inject fuel into the chamber in a fuel injection direction, and the fuel nozzle outlet portion is positioned upstream of the first nozzle.

A sealing mechanism for a rotating mechanism, a rotating mechanism and a sealing method. The rotating mechanism comprises a rotor having a rotary disk (1) and a stator accommodating the rotor. The sealing mechanism comprises a first flow-blocking portion (4), which protrudes and is provided on an end face of the rotary disk (1), wherein a labyrinth seal and a spiral seal are provided in combination at the first flow-blocking portion (4); and a first corresponding flow-blocking portion (5), which is recessed, is provided on an inner surface of the stator and is in clearance fit with the first flow-blocking portion (4). The first flow-blocking portion (4) has a first recessed portion and / or protruding portion (6) on a circumferential surface thereof, the first corresponding flow-blocking portion (5) is flatly constructed or provided, on a circumferential surface thereof, with a first corresponding protruding portion and / or recessed portion (7) which are / is in clearance fit with the first recessed portion and / or protruding portion (6), and the first flow-blocking portion (4) and the first corresponding flow-blocking portion (5) form a labyrinth seal at the corresponding top or bottom section thereof respectively and form a spiral seal at a corresponding side section respectively, which can further suppress fluid leakage, thereby improving the sealing performance.

A method according to certain embodiments generally involves mixing exhaust gas and air in an exhaust gas recirculation mixer. The method includes directing exhaust gas from an engine to a mixing tube along a first flow path, and directing air to the mixing tube along a second flow path. One of the first flow path or the second flow path is an outer flow path, and the other of the first flow path or the second flow path is an inner flow path surrounded by the outer flow path. The first flow path and the second flow path merge within a throat of the mixing tube such that the exhaust gas and the air mix within the mixing tube to thereby provide a mixture of exhaust gas and air.

A method according to certain embodiments generally involves mixing exhaust gas and air in an exhaust gas recirculation mixer. The method includes directing exhaust gas from an engine to a mixing tube along a first flow path, and directing air to the mixing tube along a second flow path. One of the first flow path or the second flow path is an outer flow path, and the other of the first flow path or the second flow path is an inner flow path surrounded by the outer flow path. The first flow path and the second flow path merge within a throat of the mixing tube such that the exhaust gas and the air mix within the mixing tube to thereby provide a mixture of exhaust gas and air.

This system allows for early detection of whether or not a foreign object has become lodged in the EGR valve. [Solution] The vehicle control device controls a vehicle that has an internal combustion engine and an EGR valve and performs idle stop when idle stop conditions are met. The vehicle control device comprises a drive command detection unit that detects a command value of the driving torque, a valve control unit that controls the EGR valve, an opening degree detection unit that detects the opening degree of the EGR valve, a jamming determination unit that determines whether or not a foreign object is jammed in the EGR valve based on the opening degree, and an idle stop control unit that permits or prohibits idle stop. The control device controls the EGR valve to close when the command value satisfies a first condition, determines whether or not a jamming condition exists when the command value satisfies a first condition, and permits or prohibits idle stop according to the jamming determination result when idle stop conditions are met, including the command value satisfying a second condition.

The invention relates to the field of engine intake and exhaust system control, in particular to an EGR system control method, a vehicle, electronic equipment and a storage medium. The EGR system comprises an EGR waste gas temperature adjusting unit and an EGR valve, wherein the EGR waste gas temperature adjusting unit is connected with the EGR valve through a pipeline; the EGR system control method comprises the steps that the condensation temperature threshold value of temperature-adjusted waste gas is obtained, and the temperature-adjusted waste gas is waste gas exhausted by an engine with the temperature adjusted through an EGR waste gas temperature adjusting unit; determining the condensation risk degree of the temperature-adjusted waste gas based on the condensation temperature threshold value and the temperature of the temperature-adjusted waste gas; if the condensation risk degree belongs to the first condensation risk grade, the cooling degree of waste gas exhausted by the engine is lowered through an EGR waste gas temperature adjusting unit; if the condensation risk degree belongs to a second condensation risk level, the opening degree of the EGR valve is controlled to be reduced; wherein the second condensation risk grade is higher than the first condensation risk grade. According to the method, generation of condensate water can be accurately prevented, and the high EGR rate is guaranteed as much as possible.

A combustion engine arrangement comprising a combustion engine has an intake manifold, and an exhaust manifold the combustion engine arrangement comprising a turbocharged air intake system fluidly connected to said intake manifold. The turbocharged air intake system has an air pump; and an exhaust gas recirculation (EGR) system fluidly connecting said exhaust manifold to said intake manifold, the EGR system comprising an EGR pump. The EGR pump and the air pump are arranged to be independently controllable so as to enable independent control the exhaust gas inflow and the air inflow to the intake manifold of the combustion engine.

The application belongs to the technical field of engines and discloses an engine EGR pipeline. The first pipeline and the second pipeline are parallel to each other, the first pipeline is wavy, the first channel and the second channel in the first pipeline are alternately connected, the second pipeline is wavy, the third channel and the fourth channel in the second pipeline are alternately connected, the first auxiliary pipeline is connected at the wave trough where the first channel and the second channel meet, the first auxiliary pipeline extends along the first channel and communicates with the fourth channel, and the other end of the first auxiliary pipeline is bent towards the second pipeline; the second auxiliary pipeline is connected at the wave peak where the third channel and the fourth channel meet, the second auxiliary pipeline extends along the fourth channel and communicates with the first channel, and the other end of the second auxiliary pipeline is bent towards the first pipeline; the problem that the valve plate of the one-way valve is broken under impact in the prior art, resulting in the problem of engine cylinder pulling, is solved.

A method (200) for controlling the temperature of recirculated exhaust gas in an internal combustion engine, comprising: Operating (202) the internal combustion engine (10) in a baseline mode; Receiving (204) a signal indicating the operating temperature of a motor; (206) comparing the engine operating temperature with a predetermined IEGR threshold; if the engine operating temperature is lower than the predetermined IEGR threshold, (210) activating an IEGR mode in which internal exhaust gas recirculation is present, and activating an EEVO mode, which is an operating mode of the internal combustion engine in which exhaust valve timing is changed compared to an initial operating mode; and If the engine operating temperature is higher than the first preset IEGR threshold, the IEGR mode is deactivated and the EEVO mode is deactivated. wherein the baseline mode includes activating a primary exhaust valve opening during an exhaust event of the associated cylinder of the exhaust valve, wherein the IEGR modes include activating a secondary exhaust valve opening during an intake event of the associated cylinder of the exhaust valve and partially holding the exhaust valve (64) open between the primary exhaust valve opening and the secondary exhaust valve opening, wherein the exhaust valve (64) is fully open during the primary exhaust valve opening and the exhaust valve has less than 40% of its full opening during the secondary exhaust valve opening, including the EEVO modes: Activating the primary exhaust valve opening prior to the primary exhaust valve opening of the baseline; holding the exhaust valve fully open (64); and Closing the outlet valve (64) according to the baseline mode.

An engine device 1 includes a common rail 16 configured to store, at a high pressure, a fuel supplied by a fuel feed pump 15. The common rail 16 includes a pressure reducing valve 211 configured to discharge the fuel in the common rail 16 to a fuel return pipe 214. The fuel return pipe 214 extends from the pressure reducing valve 211 to a position higher than the pressure reducing valve 211, and then extends to a position lower than the pressure reducing valve 211.

The present disclosure provides a single-flow large turbocharged two-stroke internal combustion engine (100) and a method of operating such an engine (100) configured to supply pressurized scavenge and / or exhaust gas to a pressurized gas consumer (200). The engine includes a plurality of cylinders, an intake system, an exhaust system, one or more turbochargers having a turbine, a fuel system, a bypass system for supplying bypassed pressurized gas to the pressurized gas consumer by taking a controlled amount of scavenge from the intake system to bypass the engine and / or by taking a controlled amount of pressurized exhaust from the exhaust system to bypass the turbine, and a controller configured to adjust the amount of bypassed pressurized gas supplied to the consumer in accordance with sensed scavenge pressure and / or exhaust temperature. The controller is configured to operate the engine in a manner that makes various adjustments to maximize scavenge pressure and / or to maximize scavenge bypass mass flow.

The invention discloses a vehicle-mounted oxygen supply system, a vehicle control method and a vehicle, the vehicle-mounted oxygen supply system comprises an air supply flow path, a supercharger, a first flow path and a second flow path, and the supercharger communicates with the air supply flow path; the first end of the first flow path communicates with the supercharger, and the second end of the first flow path is suitable for communicating with a vehicle cabin; the first end of the second flow path is connected with the supercharger, and the second end of the second flow path is suitable for communicating with the engine; gas in the gas supply flow path flows to the first flow path and / or the second flow path through the supercharger so as to supply oxygen to the engine and / or the vehicle cabin. According to the vehicle-mounted oxygen supply system, the oxygen-enriched gas can flow to the vehicle cabin and the engine, the dual requirements for the comfort of the vehicle cabin and the performance of the engine can be met, the plateau attenuation of the engine is effectively overcome, meanwhile, the oxygen content of the vehicle cabin is maintained, and therefore the plateau reaction between passengers and a driver is restrained.

A method performed by a control unit (11) for controlling exhaust valves (1A-6A, 1B-6B) of cylinders (1-6) in an internal combustion engine (10) is provided. The method comprises controlling (410) a number of first exhaust valves (1A-3A) for a first set of cylinders (1-3) to transfer exhaust gas to a turbine (8) during part of an exhaust phase (Δt1) of the first set of cylinders (1-3) via a first exhaust manifold (12). Also, the method comprises controlling (420) a number of second exhaust valves (1B-3B) for the first set of cylinders (1-3) to transfer exhaust gas to an exhaust gas recirculation, EGR, conduit (9)) during part of the exhaust phase (Δt1) of the first set of cylinders (1-3) via a second exhaust manifold (7). The method further comprises controlling (430) a number of first exhaust valves (4A-6A) for a second set of cylinders (4-6) to transfer exhaust gas to the turbine (8) during part of an exhaust phase (Δt2) of the second set of cylinders (4-6) via the first exhaust manifold (12). Furthermore, the method comprises controlling (440) a number of second exhaust valves (4B-6B) for the second set of cylinders (4-6) to transfer exhaust gas to the EGR conduit (9) during a part of the exhaust phase (Δt2) of the second set of cylinders (4-6) via the second exhaust manifold (7). Here, the exhaust phase (Δt1) of the first set of cylinders (1-3) is separated in time from the exhaust phase (Δt2) of the second set of cylinders (4-6). A control unit (11), a computer program, a carrier, an internal combustion engine and a vehicle is also provided.

Exhaust aftertreatment system for an internal combustion engine (10), comprising an exhaust system (20) connected to an outlet (14) of the internal combustion engine (10), wherein the exhaust system has an exhaust channel (24) in which, in the direction of flow of exhaust gas through the exhaust channel (24), a turbine (28) of an exhaust gas turbocharger (26) and, downstream of the turbine (28), a particulate filter (32) are arranged, wherein the particulate filter (32) has a filter body (58) and wherein the particulate filter (32) has a housing (86) which tapers conically downstream of the filter body (58) in the form of an outlet funnel (64), characterized in that the outlet funnel (64) branches into a second funnel (66) and a third funnel (68), wherein the second funnel (66) is connected to a low-pressure exhaust gas recirculation (40) and the third funnel (68) to a main channel (50) of the exhaust system (20) is connectedwherein the second funnel (66) carries a filter element (70) at its inlet (88), and wherein the second funnel (66) has an oval inlet geometry at its inlet (88).

Vehicle thermal management system, featuring: an integrated thermal management valve (ITM) (1) for receiving engine coolant through a coolant inlet (3A) connected to an engine coolant outlet (112) of an engine (110) and for distributing the engine coolant flowing towards a radiator (300) via a coolant outlet path (3B) connected to a heating core (200) and the radiator (300); a water pump (120) arranged at a front end of an engine head coolant inlet (111) of the engine (110); a coolant branch flow path (107) branched off at a front end of the engine coolant inlet such that it is connected to an exhaust gas recirculation (EGR) cooler (500); and an intelligent single valve (SSV) (400) for adjusting an engine coolant flow in the EGR cooler flow path direction in the coolant branch flow path (107), characterized by the fact that The coolant outlet path (3B) has a radiator outlet path (3B-1) connected to the radiator (300), a heater outlet path (3B-2) connected to the heater core (200), and an EGR outlet hole (3B-3) connected to the EGR cooler (500), which is connected to the coolant branch flow path (107).

An integration system for use with a turbine, the integration system including an inlet bleed heat (IBH) system, an exhaust gas recirculation (EGR) system, and a controller.

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.

A fusible link element (10; 15; 25; 35) comprising a metal composite material in which a first fusible metal (11; 21; 31) and a second fusible metal (12; 22; 32) are layered on top of each other, wherein the second fusible metal (12; 22; 32) has a lower melting temperature than the first fusible metal (11; 21; 31), characterized by the fact that the first fusible metal (11; 21; 31) is a Sn-Ag alloy and the Sn-Ag alloy contains at least 20 wt% and at most 30 wt% Ag, and the second fusible metal (12; 22; 32) is a Sn-Bi alloy and the Sn-Bi alloy contains at least 40 wt% and at most 70 wt% Bi, wherein at a common working temperature at least part of a component of the second fusible metal (12; 22; 32) is melted and part of a component of the first fusible metal (11; 21; 31) is melted, and where, at the common working temperature, the difference between a liquidus temperature and a solidus temperature of the first fusible metal (11; 21; 31) and the second fusible metal (12; 22; 32) is reduced by a shift in the equilibrium of Sn between the first fusible metal (11; 21; 31) and the second fusible metal (12; 22; 32) and by a mutual diffusion of Ag and Bi between the first fusible metal (11; 21; 31) and the second fusible metal (12; 22; 32).

A process includes operating an electronic control system to control operation of an engine system. The operating includes operating the engine at an engine speed and an EGR fraction and the turbocharger within a steady state speed limit, in response to the engine speed and the EGR fraction, setting an actuator limit on position of the turbine actuator, and in response to a change in one or both of the speed of the engine and the EGR fraction, proactively adjusting the turbine actuator according to the actuator limit prior to an increase in turbocharger speed, the adjusting limiting turbocharger speed overshoot relative to a speed limit.

A kind of ternary encapsulation assembly anticorrosion structure belongs to the technical field of automobile exhaust system. Intake flange is connected with intake upper shell, intake upper shell and lower shell form cavity, TWC carrier is fixed in it by gasket one, intake lower shell is connected with catalytic converter shell through front end taper, GPF carrier in it is fixed by gasket two, catalytic converter shell is connected with exhaust pipe through rear end taper, exhaust pipe is connected with rear flange assembly, oxygen sensor nut and differential pressure tube nut seat are fixed on corresponding shell outer wall respectively, differential pressure tube assembly is installed correspondingly, EGR pipe is connected with catalytic converter shell, heat shield is welded on catalytic converter shell outside, bracket is fixed by bolt, relevant bracket, heat insulation cotton and the like are fixed correspondingly. The utility model improves anticorrosion performance, prolongs service life while guaranteeing the stability of exhaust purification function and the environmental adaptability of structure by the synergy of material selection, process optimization and structure design.

A hydrogen-diesel dual-fuel engine (100) includes an engine block (102) having a cylinder (104) outfitted with at least two hydrogen fuel injectors (118) and a piston. An air- handling system of the engine (100) includes an intake manifold (114), an intake pipe (107), an exhaust pipe (122), a variable geometry turbocharger (108), and an exhaust gas recirculation system (126) configured to recirculate exhaust gases from the exhaust pipe (122) to the intake manifold (114). A two-step camshaft of the engine (100) is configured with the air-handling system for exhaust re-breathing and late intake valve closing, and a port fuel injector system (116) provides hydrogen gas to the at least two hydrogen fuel injectors (118). The engine (100) further includes a diesel injector (305), a common-rail fuel injection system (120), a plurality of sensors (150), and a controller (170) for controlling operations of the hydrogen-diesel dual- fuel engine (100).

An intercooler comprises: a plurality of tubes (21) arranged to allow introduced intake gas to flow into and out of them, and arranged in a vertical direction of the intercooler, and a cooling fin structure (22) forming a cooling passage within the plurality of tubes (21). In particular, the cooling fin structure (22) is arranged such that it is offset to one lateral side within the plurality of tubes (21) to form a cooling efficiency reduction passage (24) on the other lateral side within the plurality of tubes (21).

To promote heat radiation of a cable for supplying electric power to an electric heating type catalyst device.SOLUTION: The vehicle includes the engine 20 located in the engine room 110, the EHC50 that defines the flow passage of the exhaust gas together with the exhaust gas pipe 40 in the engine room 110 and supports the catalytic converter on the catalytic converter support that generates heat by being energized, and the third EHC50 cable 82 that connects the power supply device 70 for supplying power to the EHC50 and the 2EHC, and at least a part of the third 2EHC cable 82 is located on the upward direction side with respect to the 28A of the upper end surface of the head cover 28 of the engine 20.SELECTED DRAWING: Figure 1

The utility model discloses a kind of EGR valve fixed support that can prevent vibration, it is related to EGR valve technical field, including mounting plate, EGR valve body, further include: adjusting assembly, set in the mounting plate, for adjusting the length of fixed support;Locking assembly, set in the mounting plate, for locking adjusting assembly;Mounting assembly, set in the adjusting assembly, for installing EGR valve body;Fixed component, set in the mounting assembly, for fixed mounting assembly;Damping component, set in the mounting assembly, for preventing EGR valve body vibration, by the cooperation of adjusting assembly, utilize the knob of rotation to drive screw rod rotation, so that screw rod drives adjusting plate movement, to make the sliding plate fixedly connected with adjusting plate slide along support shell, to reach the length of fixed support can be adjusted, so that fixed support can be installed on different vehicle models, expand the application range of fixed support.