29 results about "Wastegate" patented technology

The utility model relates to the technical field of waste gas bypass valve, specifically is a kind of booster waste gas bypass valve mounting bracket, including support, the inside of the support is equipped with second sliding slot, the inside sliding installation connecting plate of second sliding slot, the both ends of connecting plate are respectively fixedly connected with first fixed plate and second fixed plate, the first fixed plate is equipped with first installation slot in the end away from connecting plate, the first installation slot is used for second valve mounting plate installation insertion, the second valve mounting plate fixed sleeve is connected on the outside upper portion of waste gas bypass valve body. By modular mounting bracket, make waste gas bypass valve insertion automatic locking;When disassembling, only need to press push block or push rod can be quickly unlocked, which makes waste gas bypass valve body and connecting rod can be completely independently disassembled and maintained, when repairing or replacing single component, there is no need to disassemble the whole mechanism as a whole, significantly simplify the operation process, reduce maintenance complexity and time cost.

A turbo-boost controlled intake system is disclosed that provides a driver of a vehicle with greater control over vehicle performance. The turbo-boost controlled intake system includes a control module that is coupled with an aircharger air intake. The control module instructs an electronic control unit of the vehicle to increase manifold pressure to a higher level before releasing the pressure through a waste gate so as to provide a greater power output of the engine. The turbo-boost controlled intake system further includes a wiring harness and a signal adjuster. The wiring harness couples the control module with a turbo inlet pressure sensor, a manifold absolute pressure sensor, and an electronic control unit of the vehicle. The signal adjuster includes a rheostat that enables manual adjustment of the power output of the engine.

This improves the responsiveness of the actual boost pressure when the opening of the wastegate valve is changed. [Solution] The internal combustion engine comprises a cylinder, an intake passage, an exhaust passage, a turbocharger, and an actuator. The turbocharger includes a turbine wheel, a compressor wheel, a bypass passage, and a wastegate valve. The wastegate valve opens and closes the flow path of the bypass passage. The control device of the internal combustion engine acquires the actual boost pressure as the measured value of the boost pressure, which is the pressure in the portion downstream of the compressor wheel in the intake passage (S13). When the control device of the internal combustion engine changes the opening of the wastegate valve, it increases the amount of change in power supplied to the actuator when the amount of change in the actual boost pressure over a predetermined period is a first value, compared to when the amount of change in the actual boost pressure over a predetermined period is a second value which is greater than the first value (S51, S52).

System (200) for one motor (12), comprising: - an engine inlet (23) with an air inlet throttle (22) which is flow-coupled with an engine inlet manifold (24) along an inlet channel (18), and a compressor (90) for charging an inlet air charge received along the inlet channel (18); - a first ejector (206) positioned above the air inlet throttle (22) and controlled by a first valve (208); - a second ejector (80) positioned in a compressor bypass stream and controlled by a second valve (86); - a common actuator (44) configured to simultaneously adjust a position of the first valve (208) and the second valve (86); and - a channel (84) connecting the second ejector (80) to the actuator (44), which is designed to direct the negative pressure generated by the second ejector (80) to the actuator (44); - a ventilation duct (202) that connects the duct (84) upstream of the compressor (90) to the inlet duct (18); and - a ventilation valve (204) positioned in the ventilation duct (202) or at an intersection of the ventilation duct (202) with the channel (84).

Diagnostic procedures for a turbocharged internal combustion engine in a vehicle, including: Activating a monitoring device and adjusting an actuator during the operation of an internal combustion engine with a closed-loop turbocharger boost control system by a controller, and providing an indication of deterioration by the controller based on the duration of an actual deviation exceeding a threshold deviation level between an expected change in boost pressure and an actual change in boost pressure over a driving cycle without referencing a command or measurement of a variable geometry turbine (VGT) or wastegate, where the internal combustion engine is operated by the control system with a closed-loop turbocharging control under conditions other than idle conditions, which includes any of the passage of a threshold vehicle running time, reaching a threshold combustion engine temperature and maintaining a threshold intake manifold pressure.

The invention relates to a method for reducing cold-start emissions in a vehicle (10). Control signals are issued to open a wastegate, rotate a turbine (314), and activate a catalyst heater (206) arranged between the turbine (314) and a catalyst (310) in response to a trigger signal. The rotation of the turbine (314) causes recirculated air to flow in a recirculation flow path comprising an exhaust manifold (320), exhaust baffles between the exhaust manifold (320) and the turbine (314), a turbine housing, exhaust baffles between the turbine (314) and the wastegate (306), exhaust baffles between the wastegate (306) and the exhaust manifold (320), and exhaust baffles between the turbine (314) and the catalyst heater (206).Heat from the recirculated air, which is heated by the catalyst heater (206), is transferred to the exhaust manifold (320), the exhaust walls between the exhaust manifold (320) and the turbine (314), the turbine housing, the exhaust walls between the turbine (314) and the wastegate (306), the exhaust walls between the wastegate (306) and the exhaust manifold (320), and the exhaust walls between the turbine (314) and the catalyst heater (206). A seventh control signal is output to a compressor bypass valve actuator (214) to open a compressor bypass valve (308) in response to the trigger signal. The invention also relates to a system (100) for reducing cold-start emissions.

An engine control system, an engine control method, and an engine control program. The engine control system according to the present disclosure is provided with an oil temperature sensor and a wastegate valve control section. The oil temperature sensor detects the temperature of engine oil. The wastegate valve control section controls the opening and closing of a wastegate valve (WGV) based on the temperature of engine oil detected by the oil temperature sensor. More specifically, in the case where the temperature of engine oil detected by the oil temperature sensor is below a predetermined threshold value, the wastegate valve control section controls in such a manner that the wastegate valve (WGV) is opened.

A turbocharger control method and apparatus, a device, and a readable storage medium. The method comprises: acquiring an operating condition corresponding to a vehicle (200); determining a surge line corresponding to a turbocharger (210), the surge line being used for representing a gas flow oscillation phenomenon of gas along the axial direction of a compressor; and when the operating condition and the surge line satisfy a preset relationship, adjusting a first opening angle of a wastegate valve, or adjusting a second opening angle corresponding to a vehicle accelerator pedal (220).

To early activate a catalytic converter in an engine with a turbocharger.SOLUTION: A control device 10 for an engine with a turbocharger includes: an engine 1; an exhaust passage 4 in which exhaust gas from the engine flows; a turbocharger 3 having a turbine wheel 35 rotated by a flow of exhaust gas in the exhaust passage; and a catalytic converter 42 located downstream of the turbocharger. The turbocharger includes: a waste gate valve 38 that fully opens a bypass passage 37 while the engine is performing a warming-up operation of the catalytic converter; and a resistance application mechanism (lock mechanism 7) for applying resistance to rotation of the turbine wheel.SELECTED DRAWING: Figure 4

The present invention relates to a system for controlling a wastegate of a turbocharger of an internal combustion engine, the system comprising: a lever plate adapted to communicate with the wastegate of the turbocharger for controlling the wastegate; a linking arm adapted communicate with an actuator of the system and adapted to releasably connect to the lever plate via a joint defined by a portion of the lever plate and a portion of the linking arm; wherein the joint is dimensioned to connect the linking arm and the lever plate in a first orientation of the linking arm with respect to the lever plate and to disconnect the linking arm and the lever plate in a second orientation of the linking arm with respect to the lever plate.

A double wastegate valve arrangement having improved durability and reduced overall loading in the system, with two wastegate valves movable along a valve longitudinal axis, wherein each of the two wastegate valves has a rotationally symmetrically designed projecting upper side portion configured around the valve longitudinal axis, a valve arm connected to an actuating shaft, and an intermediate plate which is loosely arranged between the valve arm and the wastegate valves, wherein the intermediate plate is pivotable about the valve arm in a direction perpendicularly with respect to the valve longitudinal axis and is supported by rotationally symmetrically designed projecting lower side portions of the intermediate plate on the rotationally symmetrically designed projecting upper side portions of the two wastegate valves.

Systems and methods are provided for mitigating cold start emissions via rotation of a turbocharger turbine. A trigger signal is received from a trigger signal source. A first control signal is issued to a wastegate actuator to open the wastegate in response to the trigger signal. A second control signal is issued to the turbine shaft actuator to rotate a turbine of the turbocharger. Rotation of the turbine causes recirculation air to flow in a recirculation flow path that includes an exhaust manifold, the turbine, an exhaust wall system, and a wastegate. The exhaust wall system includes a turbine housing of the turbine, an exhaust wall disposed between the turbine and the wastegate, and an exhaust wall disposed between the turbine and the catalyst brick. At least a portion of the recirculation flow path is adjacent to one side of the catalyst brick. Heat is transferred from the recirculated air to the exhaust wall system and to the catalyst bricks via one side of the catalyst.

The invention provides a method and system for calculating the opening and closing angle of a waste gas bypass valve of a vehicle turbocharger and a storage medium, and the method comprises the steps: collecting the feedback voltage of an electronic actuator and the swing angle of a rocker arm of the electronic actuator, and constructing a linear equation between the feedback voltage of the electronic actuator and the swing angle of the rocker arm of the electronic actuator; feedback voltage when the turbocharger works is obtained, the feedback voltage is substituted into the linear equation, and the swing angle of a rocker arm of the electronic actuator during working is obtained through calculation; and the opening and closing angle of the waste gas bypass valve is calculated according to the motion characteristics and the swing angle of the four-bar mechanism. The problem that deviation exists between the actual opening and closing angle of the waste gas bypass valve and the calculated value due to the fact that the opening and closing angle of the waste gas bypass valve is calculated according to the linear relation between the opening and closing angle of the waste gas bypass valve and the swing angle of the rocker arm in an existing mode is solved.

Systems and methods are provided for mitigating cold start emissions in a vehicle including a catalyst heater via rotation of a turbocharger turbine. In response to the trigger signal, a control signal is issued to open the wastegate, rotate the turbine, and turn on a catalyst heater disposed between the turbine and the catalyst. Rotation of the turbine causes recirculation air to flow in a recirculation flow path, the recirculation flow path includes an exhaust manifold, an exhaust wall between the exhaust manifold and the turbine, a turbine housing, an exhaust wall between the turbine and the wastegate, an exhaust wall between the wastegate and the exhaust manifold, and an exhaust wall between the turbine and the catalyst heater. Heat is transferred from the recirculated air heated by the catalyst heater to the exhaust manifold, the exhaust wall between the exhaust manifold and the turbine, the turbine housing, the exhaust wall between the turbine and the wastegate, the exhaust wall between the wastegate and the exhaust manifold, and the exhaust wall between the turbine and the catalyst heater.

In a supercharging system, an exhaust passage forms a curve from an upstream portion into which exhaust gas flows from a supercharger or a bypass passage, a curved portion that changes the direction of the exhaust gas flowing into the upstream portion, and a downstream portion that connects the curved portion and an exhaust gas purification catalyst. The wastegate valve has a bulging portion that bulges into the bypass passage when the bypass passage is closed. The wastegate valve is configured so as to swing and open at the outlet of the bypass passage so as to be away from the inner path of the curve toward the downstream. Furthermore, the wastegate valve is configured so as to open within a range of an angle smaller than an angle parallel to the central axis of the upstream portion.

Control signals are issued to open a wastegate, rotate a turbine, and turn on a catalyst heater disposed between the turbine and a catalyst in response to a trigger signal. The rotation of the turbine causes recirculated air flow in a recirculation flow path including an exhaust manifold, exhaust walls between the exhaust manifold and the turbine, a turbine housing, exhaust walls between the turbine and the wastegate, exhaust walls between the wastegate and the exhaust manifold, and exhaust walls between the turbine and the catalyst heater. Heat is transferred from the recirculated air heated by the catalyst heater to the exhaust manifold, the exhaust walls between the exhaust manifold and the turbine, the turbine housing, the exhaust walls between the turbine and the wastegate, the exhaust walls between the wastegate and the exhaust manifold, and the exhaust walls between the turbine and the catalyst heater.

A turbine comprising a wastegate chamber (28): a turbine housing (12) defining a turbine inlet (14), the turbine housing (12) comprising: a wastegate inlet passageway (30) defining a flow path between the turbine inlet (14) and the wastegate chamber (28), wherein the wastegate inlet passageway (30) comprises a turbine port (38) proximal the turbine inlet (14) and a non-circular valve port (36) proximal the wastegate chamber (28), and a raised rim (52) surrounding the non-circular valve port (36) and conformal to the shape of the non-circular valve port (36), wherein the raised rim comprises a first sealing surface (52); and a valve member (42) comprising a second sealing surface (50), wherein the valve member (42) is moveable between a closed position in which the second sealing surface (50) forms a seal with the first sealing surface (54) to prevent fluid flow along the flow path and an open position in which the second scaling surface (50) is spaced apart from the first sealing surface (54) to permit fluid flow along the flow path.

Exhaust gas recirculation (EGR) system (122) in a vehicle (100) comprising: a turbine (116) fluidically connected downstream of an exhaust manifold (200); and an EGR channel (124) comprising: a first port (126) connected to a line directly downstream of the turbine (116), wherein an axis of the first port (126) is arranged at a non-perpendicular angle to an axis of rotation of the turbine (116); and a second port connected to an intake system (106), characterized by the fact that the first connection (126) is positioned vertically above a wastegate outlet and the wastegate (120) is positioned inside the pipeline.

A turbine (10) comprising a wastegate chamber (28) is disclosed. The turbine (10) further comprises a turbine housing (12) that defines a turbine inlet (14). The turbine housing (12) comprises a wastegate assembly (26, 126). The wastegate assembly (26, 126) comprises a wastegate inlet passageway (30, 130) that defines a flow path B between the turbine inlet (14) and the wastegate chamber (28), wherein the wastegate inlet passageway (30, 130) comprises a turbine port (31) adjacent the turbine inlet (14) and a valve port (33, 133) adjacent the wastegate chamber (28). A first sealing surface (36, 136) surrounds the valve port (33, 133). The wastegate assembly (26, 126) further comprises a valve member (34, 134). The valve member (34, 134) comprises a valve plate (38) that defines a second sealing surface (40, 140), and a protrusion (42, 142) that extends from the valve plate (38) to define a protrusion height (54) and a protrusion width (56). The protrusion height (54) is less than half of the protrusion width (56). The valve member (34, 134) is pivotable between a closed position in which the second sealing surface (40, 140) engages the first sealing surface (36, 136) and the protrusion (42, 142) is disposed in the wastegate inlet passageway (30, 130), and an open position in which the second sealing surface (40, 140) is spaced apart from the first sealing surface (36, 136). A turbomachine is also disclosed.

The present invention relates to a pneumatic resonator and accumulator system for controlling turbocharger wastegate movement. A wastegate system of a vehicle includes a wastegate valve configured to regulate exhaust flow through a turbine of a turbocharger of an engine, a wastegate actuator including a lever mechanically coupled to the wastegate valve via one or more linkages and configured to linearly move based on a pressure within an interior of the wastegate actuator, a resonator fluidically coupled to the interior of the wastegate actuator via one or more first hoses and configured to counteract a force attributable to pressure changes in exhaust gas resulting from combustion events within the engine, and a regulator valve fluidically connected between a pneumatic source and the resonator via one or more second hoses and configured to regulate the pressure within the interior of the wastegate actuator.

Internal combustion engine control device for an internal combustion engine (2) comprising: a turbocharger (60) which pressurizes intake air using exhaust gases from an internal combustion engine (2), a bypass channel (46) which is configured to bypass a turbine (60A) of the turbocharger (60) so that exhaust gases flow through this channel, and a wastegate valve (65) which regulates the amount of exhaust gases flowing through the bypass channel (46), wherein the internal combustion engine control device comprises: a control unit (3) that performs normal opening control to close the wastegate valve (65) according to an increase in the opening degree of an accelerator pedal (22A), wherein the control unit (3) in a non-charging range, within which the accelerator pedal opening degree is equal to or less than a first accelerator pedal opening degree, controls the wastegate valve (65) to an opening degree which is close to a closed state with respect to a fully open state, and wherein in the non-charging range, the control unit (3): the wastegate valve (65) controls to a first opening degree corresponding to the first accelerator pedal opening degree, if the accelerator pedal opening amount corresponds to a first accelerator pedal opening amount as a predetermined accelerator pedal opening degree; the wastegate valve (65) is controlled to a fully closed state when the accelerator pedal opening degree is less than a second accelerator pedal opening degree, which in turn is less than the first accelerator pedal opening degree, and controls the opening degree of the wastegate valve (65) to a second opening degree which is smaller than the first opening degree and corresponds to the accelerator pedal opening degree when the accelerator pedal opening degree is equal to or greater than the second accelerator pedal opening degree and smaller than the first accelerator pedal opening degree.

This invention provides a control system for an internal combustion engine that can more efficiently raise the temperature of an exhaust gas purification device in an internal combustion engine where the exhaust gas purification device is located downstream of two superchargers. [Solution] The control system for an internal combustion engine includes a fuel injector that injects fuel into the cylinders, a first supercharger located in the exhaust passage, a second supercharger located downstream thereof, a bypass passage that bypasses the first supercharger and is connected to the upstream of the second supercharger, an exhaust purification device located downstream of the second supercharger that purifies the exhaust gas, a variable nozzle that changes the passage diameter of the turbine nozzle of the first supercharger, a wastegate valve that adjusts the exhaust gas flow rate to the turbine of the second supercharger, and a bypass valve located in the bypass passage that adjusts the amount of exhaust gas. The control device performs temperature rise control by controlling the variable nozzle to restrict the diameter of the turbine nozzle, controlling the bypass valve to open, and controlling the wastegate valve to open when raising the temperature of the exhaust purification device.

The utility model relates to the technical field of superchargers, and particularly discloses a supercharger waste gas bypass mechanism which comprises an actuator, a connecting rod rotationally connected to the top of the actuator, a first pivot fixedly connected to the top of the connecting rod, a second gasket sleeved on the top of the periphery of the first pivot, a pull rod rotationally connected to the periphery of the top of the first pivot, and a volute arranged on the outer side of the actuator. The top of the volute is rotationally connected with a crank, the outer side of the crank is fixedly connected with a second pivot, the periphery of the second pivot is sleeved with a first gasket, a damping mechanism is arranged on the outer side of the bottom of the crank, vibration generated when the crank moves is damped and buffered through the damping mechanism, and noise generated when the crank knocks the volute during movement and noise generated when the crank vibrates are prevented.

The invention belongs to the technical field of superchargers of aviation piston supercharged engines, and particularly relates to a device and a method for calibrating a servo motor of a supercharger of an aviation piston supercharged engine. The calibration device comprises a supercharger and a servo motor, an inhaul cable adjusting support is connected to the supercharger, a wastegate inhaul cable is arranged in the inhaul cable adjusting support in a penetrating mode, the two sides of the inhaul cable adjusting support are locked with the wastegate inhaul cable through a first adjusting nut and a second adjusting nut respectively, and a rotating wheel is rotationally connected to the servo motor. An inhaul cable pressing bolt is connected between the rotating wheel and a shell of the servo motor, and a waste gate inhaul cable is wound around the rotating wheel. The device further comprises a handheld inhaul cable steering device, a dynamometer and a gap adjusting tool. The dynamometer is provided with an inhaul cable fixing device. The wastegate inhaul cable is wound out of a rotating wheel of the servo motor, steered by the handheld inhaul cable steering device and then connected to the inhaul cable fixing device. The gap adjusting tool is clamped on the waste gate inhaul cable and located between the first adjusting nut and the inhaul cable adjusting support. The invention provides an aviation piston type supercharged engine supercharger servo motor calibration device and method.

Method for a turbocharged engine (10), comprising: in response to a torque demand from a driver (132) opening an intake throttle (62, 63, 64, 65) and closing an exhaust wastegate valve (82) based on the torque demand independent of a change in an exhaust gas recirculation (EGR) plan (142, 152, 140, 150) and variable camshaft timing (VCT) plan (55); and Simultaneous planning of the EGR (142, 152, 140, 150) and the VCT (55) based on a predicted load deficit ratio independent of the actual position of the intake throttle (62, 63, 64, 65) and the wastegate valve (82).

This invention relates to a valve assembly for an exhaust valve of a turbine and a turbine. The valve assembly includes: a rocker arm, the rocker arm including an arm portion and a mounting portion fixed to the arm portion; and a valve unit fixed to the rocker arm and including: a valve cover, the valve cover having a sealing portion and a valve stem extending from the sealing portion, the sealing portion for engaging with an exhaust valve; and a mounting beam, the mounting beam having a mounting hole for mounting the valve stem, the mounting hole for mounting the valve stem, and the retaining rod fixed to the mounting portion of the rocker arm. The valve cover further has a first mating portion between the sealing portion and the valve stem, and the mounting beam further has a second mating portion surrounding the mounting hole, the second mating portion forming a line contact engagement with the first mating portion. This valve assembly enables precise engagement between the valve cover and the mounting beam, thereby improving the exhaust valve's sealing performance and extending the valve assembly's lifespan. This valve assembly also improves response speed, achieving a larger bypass flow capacity with a smaller valve cover opening.

Systems, methods and apparatus are disclosed for producing a target compressor outlet pressure that is based on a desired pressure differential across an intake throttle of an internal combustion engine and an intake manifold pressure by opening or closing a compressor recirculation valve and a turbocharger wastegate to commanded positions based on the target compressor outlet pressure.

Wastegate (128, 401), comprehensive: a valve plate (403, 501) comprising a curved multiplane surface (405, 513) on an inner side of the valve plate (403, 501), wherein the curved multiplane surface (405, 513) forms a raised edge (406, 505) on a first side of the valve plate (624) and a side opening (422, 506) on a second side of the valve plate (625); and a channel (410, 604) comprising a narrowed area (414, 612) arranged upstream of the valve plate (403, 501) and aligned with the raised edge (406, 505), wherein the valve plate (403, 501) is positioned at one end of the channel (410, 604), wherein an inner side wall (609) of the channel (410, 604) tapers at the narrowed area (414, 612) to a central axis (603) of the channel (410, 604) and the taper increases as the inner side wall (609) gets closer to the valve plate (403, 501).