JP6486852B2 - Control device and control method for internal combustion engine - Google Patents

Description

  The present invention relates to a control device and a control method for an internal combustion engine, and more specifically, when an abnormality occurs in the electric control valve mechanism in an internal combustion engine including an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of a turbocharger. Related to control technology.

  In Patent Document 1, an engine including a wastegate valve that is interposed in a bypass route that bypasses a supercharged turbine on an exhaust passage and is driven by an electric actuator is used after the engine is started. A control device is disclosed that determines that there is a possibility that the waste gate valve has failed when the absolute value of the difference between the target position and the actual position of the gate valve is equal to or greater than a predetermined value.

Japanese Patent Laid-Open No. 2015-021405

  By the way, in an internal combustion engine with a turbocharger for a vehicle, an abnormality occurs in an electric control valve mechanism (electric control wastegate valve) that adjusts the exhaust gas inflow amount of the turbine of the turbocharger, and adjustment of the exhaust gas inflow amount (in other words, When adjustment of the supercharging pressure becomes impossible, if the torque generated for the driver's operation becomes higher or lower than normal due to such abnormality, the drivability of the vehicle is impaired. .

  Therefore, the present invention has been made in view of the above problems, and it is possible to suppress an occurrence of excess or deficiency in generated torque when an abnormality occurs in an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine. It is an object of the present invention to provide an engine control device and a control method.

Therefore, the internal combustion engine control apparatus according to the present invention outputs, as one aspect, a turbocharger, an electric control valve mechanism that adjusts an exhaust gas inflow amount of the turbine of the turbocharger, and a position signal of the electric control valve mechanism A control device applied to an internal combustion engine comprising: a diagnostic means for detecting the presence or absence of abnormality of the electric control valve mechanism; and when the abnormality of the electric control valve mechanism is detected, Control means for suppressing an increase in the intake air amount of the internal combustion engine as compared with when the electric control valve mechanism is normal, and the control means is configured such that the position of the electric control valve mechanism detected by the sensor is the position of the electric control valve mechanism. increase of the intake air amount of the internal combustion engine as is the increase in side of the exhaust gas inflow turbine to further suppress the increase of the intake air amount of the internal combustion engine as the rotational speed of the internal combustion engine is high Suppress.

The internal combustion engine control method according to the present invention includes, as one aspect, a turbocharger, an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of the turbocharger, and a position signal of the electric control valve mechanism. A control method applied to an internal combustion engine comprising: a first step of detecting whether or not an abnormality that prevents the electric control valve mechanism from opening and closing has occurred; and detecting the occurrence of the abnormality A second step that suppresses an increase in the intake air amount of the internal combustion engine as compared with when the electric control valve mechanism is normal, and the second step includes the electric power detected by the sensor. As the position of the control valve mechanism is on the increasing side of the exhaust gas inflow amount of the turbine, the increase in the intake air amount of the internal combustion engine is further suppressed, and the higher the rotational speed of the internal combustion engine is, the higher the internal combustion engine is. More suppress the increase of the intake air amount of Seki.

According to the above invention, it is possible to suppress the occurrence of excess or deficiency of the generated torque in the abnormal state of the electric control valve mechanism, and it is possible to suppress the deterioration of drivability (retreat travel performance) in the abnormal state.

1 is a system diagram illustrating a configuration of a vehicle internal combustion engine in an embodiment of the present invention. It is a flowchart which shows the procedure of the process at the time of abnormality of the waste gate valve in embodiment of this invention. It is a diagram which shows the correlation with the throttle opening upper limit in embodiment of this invention, and the sticking position of a waste gate valve.

Embodiments of the present invention will be described below.
FIG. 1 is a diagram showing an aspect of an internal combustion engine to which a control device and a control method according to the present invention are applied.
The internal combustion engine 10 shown in FIG. 1 includes a turbocharger 116 as a supercharger and is mounted on a vehicle as a driving power source.

The compressor 117 constituting the turbocharger 116 is disposed in the intake pipe 111 of the internal combustion engine 10, and the intake air compressed by the compressor 117 is introduced into the electric throttle valve 107 through the intake pipe 111.
The electric throttle valve 107 is an intake air amount adjusting mechanism that is disposed in the intake system and adjusts the intake air amount of the internal combustion engine 10. The throttle valve opening (flow passage area) is changed by an actuator such as a motor. This is a mechanism for adjusting the amount of intake air.

An electronic control unit (ECU) 102 that is a control device of the internal combustion engine 10 is introduced into the intake manifold 109 by controlling the opening of the electric throttle valve 107 based on the opening information of the accelerator pedal 101 and the like. Control the intake air amount.
An intake pressure sensor 108 for measuring the intake pressure is disposed in the intake manifold 109 and transmits an intake pressure measurement signal to the ECU 102.

The ECU 102 includes a microcomputer including a CPU, a ROM, a RAM, and the like. For example, the engine speed calculated from the intake pressure measured by the intake pressure sensor 108 and the output signal of a crank angle sensor (not shown) Based on this, an appropriate amount of fuel injection is calculated to achieve the target air-fuel ratio.
Then, the ECU 102 outputs an injection control signal to the injector 103 disposed in the intake manifold 109.

The fuel injected from the injector 103 is introduced into the combustion chamber 100 together with air during the process (intake stroke) in which the intake valve 104 is opened and the piston 110 of the internal combustion engine 10 is lowered.
The internal combustion engine 10 can be a direct injection type internal combustion engine in which the injector 103 directly injects fuel into the combustion chamber 100.

The mixture of fuel and air in the combustion chamber 100 is compressed in the process (compression stroke) in which the intake valve 104 is closed and the piston 110 is raised, and is ignited and burned by spark ignition of the spark plug 106 before compression top dead center. The piston 110 is pushed down (expansion stroke) to generate output torque.
Thereafter, the piston 110 is raised and the exhaust valve 105 is opened to start the exhaust stroke, and the exhaust gas in the combustion chamber 100 is discharged to the exhaust pipe 112.

A turbine 118 constituting the turbocharger 116 is attached to the exhaust pipe 112. The turbine 118 is rotationally driven by the energy of the exhaust gas flowing through the exhaust pipe 112 to rotate the coaxial compressor 117 synchronously.
The turbocharger 116 is a system that rotates the coaxial compressor 117 by rotationally driving the turbine 118 using the energy of the exhaust gas, and obtains a supercharging effect by the rotation of the compressor 117, and the supercharging effect flows into the turbine 118. It depends on the amount of exhaust gas.

The turbocharger 116 includes a waste gate 113 that is a bypass passage for bypassing the turbine 118 and flowing exhaust gas, and a waste gate valve (wastegate) that is an electric control valve mechanism that adjusts the opening area of the waste gate 113. valve) 114.
The waste gate valve 114 is an electric control valve mechanism that changes the opening area of the waste gate 113 by displacing the valve body by an actuator 114a such as a motor, and by changing the opening degree (operation position) of the waste gate valve 114. The amount of exhaust gas flowing into the turbine 118 (in other words, the amount of exhaust gas flowing through the waste gate 113 while bypassing the turbine 118) is adjusted.
For example, by increasing the amount of exhaust gas flowing through the waste gate 113 by bypassing the turbine 118 and relatively reducing the amount of exhaust gas flowing into the turbine 118, an increase in intake pressure (supercharging pressure) is suppressed.

Further, the waste gate valve 114 is configured such that the opening change range (variable range of the operating position) is mechanically limited by stoppers provided on the fully closed side and the fully opened side, respectively.
That is, the fully closed position on the structure of the waste gate valve 114 is a state where the valve body is in contact with the stopper on the closing side or the operation limit point to the closing side of the actuator 114a. Similarly, the fully open position on the structure of the waste gate valve 114 is a state where the valve body is in contact with the stopper on the open side, or an operation limit point to the open side of the actuator 114a.

The opening sensor 114b is position detection means for outputting an electrical signal (opening signal, position signal) corresponding to the opening (operating position) of the waste gate valve 114, and the electrical signal output by the opening sensor 114b is Input to the ECU 102.
The internal combustion engine 10 also includes a crank angle sensor (rotation sensor) 121 that outputs a pulse signal POS in synchronization with the rotation of a crankshaft (not shown), and the temperature of cooling water circulated in the cooling path of the internal combustion engine 10. The ECU 102 includes a water temperature sensor 122 that detects TW, and the ECU 102 inputs a pulse signal POS output from the crank angle sensor 121, a water temperature signal TW output from the water temperature sensor 122, and the like.

The ECU 102 calculates the target opening (target position) of the waste gate valve 114 based on the intake pressure detected by the intake pressure sensor 108, and the actual opening (actual position) detected from the electrical signal output from the opening sensor 114b. ) And the target opening (target position), the amount of operation of the actuator 114a is changed to control the actual opening of the waste gate valve 114 close to the target opening (feedback control).
The ECU 102 calculates the rotational speed NE of the internal combustion engine 10 based on the pulse signal POS output from the crank angle sensor 121, and controls the fuel injection timing and ignition timing based on the pulse signal POS output from the crank angle sensor 121. To do.

Further, the ECU 102 detects the presence or absence of abnormality of the waste gate valve (electric control valve mechanism) 114, and increases the intake air amount of the internal combustion engine 10 when the abnormality of the waste gate valve 114 is detected. A function as control means for suppressing the waste gate valve 114 more than when the waste gate valve 114 is normal is provided as software.
In the following, one aspect of the processing procedure performed by the ECU 102 when the waste gate valve 114 is abnormal will be described with reference to the flowchart of FIG.

In the flowchart of FIG. 2, the ECU 102 first determines whether or not the waste gate valve 114 is abnormal in step S201 (diagnostic means).
For example, when the ECU 102 is executing control to bring the actual opening of the waste gate valve 114 detected from the opening signal of the opening sensor 114b closer to the target opening, the deviation between the actual opening and the target opening is performed. When the state where the absolute value of (control error) is larger than the threshold value continues for a set time, that is, the waste gate valve 114 is fixed (the opening degree cannot be changed) and the actual opening degree does not approach the target opening degree. Sometimes, the occurrence of an abnormality in the waste gate valve 114 can be detected.

Further, the ECU 102 can detect the presence or absence of a disconnection or a short circuit in the energization line of the actuator 114 a of the waste gate valve 114, and can detect a state where the disconnection or the short circuit has occurred as an abnormal state of the waste gate valve 114.
In other words, the abnormality of the waste gate valve 114 includes not only a mechanical failure such as a foreign matter biting into the mechanism part but also a drive circuit system abnormality such as a transistor failure, disconnection, or short circuit.

Note that the ECU 102 can appropriately include known diagnostic means for various electric control valve mechanisms as diagnostic means for the waste gate valve 114.
However, the occurrence of the abnormality of the opening sensor 114b is not included in the abnormality of the waste gate valve 114. For example, when the waste gate valve 114 is normal, but the signal line of the opening sensor 114b is disconnected or short-circuited, the ECU 102 Then, an abnormal process different from the process shown in the flowchart of FIG. 2 is performed.

Then, when the waste gate valve 114 is normal, that is, when the actual opening of the waste gate valve 114 is converged to the target opening, the ECU 102 proceeds to step S202.
In step S202, the ECU 102 sets the standard throttle opening command value TVOSC based on the opening information of the accelerator pedal 101 or the like to the final opening command value TVOC as it is, and then the ECU 102 proceeds to step S206, and finally The actuator of the electric throttle valve 107 is controlled (feedback control) so that the actual opening TVO of the electric throttle valve 107 converges to the desired opening command value TVOC.

  On the other hand, when the ECU 102 detects an abnormality in the waste gate valve 114, the ECU 102 proceeds to step S203, and the opening degree for limiting the maximum opening degree of the electric throttle valve 107 to be lower than that when the waste gate valve 114 is normal. The upper limit value TVOHL (throttle opening variable range limit value) is set. In other words, the ECU 102 restricts an increase in the intake air amount of the internal combustion engine 10 by limiting the opening variable range of the electric throttle valve 107.

In step S203, the ECU 102 sets the opening degree upper limit value TVOHL based on the opening degree TVO of the electric throttle valve 107 detected based on the opening degree signal output from the opening degree sensor 114b, that is, the fixing position of the electric throttle valve 107. Set to variable.
For example, when the waste gate valve 114 is fixed at a position where the waste gate 113 is fully closed (full opening degree), the exhaust gas inflow amount (m ³ / s) of the turbine 118 becomes maximum, and the ECU 102 It becomes impossible to control the supercharging pressure by reducing the inflow amount of the exhaust gas.
On the other hand, when the waste gate valve 114 is fixed at a position where the waste gate 113 is fully opened (full opening degree), the exhaust gas inflow amount of the turbine 118 is minimized, and the ECU 102 performs supercharging by increasing the exhaust gas inflow amount of the turbine 118. The pressure cannot be increased.

In the state where the exhaust gas inflow amount of the turbine 118 is fixed to the maximum (fully closed fixed state), the output torque of the internal combustion engine 10 may be larger than the case where the waste gate valve 114 operates normally. By suppressing the increase in torque, the deterioration of drivability can be suppressed.
However, conversely, in a state where the exhaust gas inflow amount of the turbine 118 is fixed to a minimum (fully open fixed state), the torque may be insufficient and the drivability in the retreat traveling state may deteriorate.

  For this reason, even when the waste gate valve 114 is firmly fixed at a position where the waste gate 113 is fully closed, if the process for suppressing the output torque is uniformly performed so that the increase in the output torque can be sufficiently suppressed (opening degree) If the upper limit value TVOHL is set uniformly), it is possible to suppress the output torque from becoming excessively high. However, if the fixing position is in the vicinity of the fully open position of the waste gate 113, a torque shortage may occur.

Therefore, as shown in FIG. 3, the ECU 102 has an opening degree of the waste gate valve 114 detected from the opening degree signal output from the opening degree sensor 114 b close to a position where the waste gate 113 is fully closed (fully closed opening degree). The opening degree upper limit value TVOHL is set to a lower opening degree.
That is, the ECU 012 further suppresses the increase in the intake air amount of the internal combustion engine 10 as the position of the waste gate valve 114 is on the increase side of the exhaust gas inflow amount of the turbine 118 by setting the opening degree upper limit value TVOHL.

Note that the ECU 102 does not substantially limit the opening amount TVOHL when the waste gate valve 114 is fixed within a range in which the opening area of the waste gate 113 is equal to or larger than the threshold value. When the waste gate valve 114 is fixed within a range where the area is less than the threshold value, the restriction by the opening degree upper limit value TVOHL can be performed.
For example, before proceeding from step S201 to step S203, the ECU 102 determines whether or not the opening degree of the waste gate valve 114 is equal to or larger than a predetermined opening degree (the opening area of the waste gate 113 is equal to or larger than a threshold value). When the opening degree of the gate valve 114 is greater than or equal to the predetermined opening degree, the process can proceed to step S202, and when the opening degree of the waste gate valve 114 is less than the predetermined opening degree, the process can proceed to step S203.

Further, the ECU 012 variably sets the opening degree upper limit value TVOHL according to the fixing position of the waste gate valve 114 and further changes the opening degree upper limit value TVOHL according to the rotational speed NE (rpm) of the internal combustion engine 10. Can be set.
As the rotational speed of the internal combustion engine 10 increases, the exhaust gas inflow amount of the turbine 118 increases, the supercharging pressure increases, and the output torque of the internal combustion engine 10 increases. Therefore, as shown by the chain line in FIG. The higher the rotation speed of the engine 10, the lower the opening degree upper limit TVOHL can be changed.

When the ECU 102 sets the opening degree upper limit TVOHL in accordance with the fixing position (and engine speed NE) of the waste gate valve 114 in step S203, the ECU 102 proceeds to step S204, and the standard based on the opening information of the accelerator pedal 101 and the like. Is compared with the opening degree upper limit value TVOHL.
If the throttle opening command value TVOSC is smaller than the opening upper limit value TVOHL, the ECU 102 proceeds to step S202, and the standard throttle opening command value TVOSC is used as the final opening command value TVOC, and then proceeds to step S206. Thus, the actuator of the electric throttle valve 107 is controlled (feedback control) so that the actual opening TVO of the electric throttle valve 107 converges to the final opening command value TVOC.

On the other hand, when the throttle opening degree command value TVOSC is equal to or larger than the opening degree upper limit value TVOHL, the ECU 102 proceeds to step S205 and sets the opening degree upper limit value TVOHL as the final opening degree command value TVOC, thereby obtaining the opening degree upper limit value. Setting of the opening command value TVOC on the open side with respect to TVOHL is suppressed, thereby suppressing an increase in the intake air amount.
As described above, the processing of step S203 to step S205 is a control that suppresses an increase in the intake air amount of the internal combustion engine 10 more than when the waste gate valve 114 is normal when an abnormality of the waste gate valve 114 is detected. Means.

Next, the ECU 102 proceeds to step S206, and controls (feedback control) the actuator of the electric throttle valve 107 so that the actual opening TVO of the electric throttle valve 107 converges to the final opening command value TVOC.
That is, the ECU 102 variably controls the opening degree of the electric throttle valve 107 within a range not exceeding the opening degree upper limit value TVOHL.

Here, the ECU 102 can switch the opening command value TVOC stepwise when switching between the standard throttle opening command value TVOSC and the opening upper limit value TVOHL, and the command value before switching. To gradually reach the command value after switching.
Further, when the ECU 102 gradually switches the opening command value TVOC between the standard throttle opening command value TVOSC and the opening upper limit value TVOHL, the command value after switching the change rate of the opening command value TVOC. The closer you are, the slower it can be.

When the ECU 102 performs the process shown in the flowchart of FIG. 2, when an abnormality occurs in the waste gate valve 114, even if the position of the waste gate valve 114 is different, an excessively high torque is suppressed from being generated. It is possible to suppress the deterioration of drivability (evacuation traveling performance) due to insufficient torque.
Further, the ECU 012 variably sets the opening degree upper limit value TVOHL according to the fixing position of the waste gate valve 114 and the rotational speed of the internal combustion engine 10, so that the generated torque is excessive or insufficient due to the rotational speed of the internal combustion engine 10. This can suppress the deterioration of drivability.

Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. is there.
By performing the processing shown in the flowchart of FIG. 2, the ECU 102 restricts the opening of the electric throttle valve 107 so that it does not exceed the opening upper limit value TVOHL for an abnormality, so that the intake air amount becomes a threshold value. However, instead, the increasing change rate of the opening degree (intake air amount) of the electric throttle valve 107 is commensurate with the changing speed of the standard throttle opening command value TVOSC (the changing speed of the command value TVOSC). It is possible to carry out processing that is slower than the change rate of the intake air amount.

Specifically, the ECU 102 performs a process of delaying the transient response by performing a low-pass filter process for delaying the transient response of the standard throttle opening command value TVOSC calculated based on the accelerator opening information and the accelerator opening information. By calculating the final opening command value TVOC based on the applied information, the rate of increase in the opening degree (intake air amount) of the electric throttle valve 107 can be delayed.
Here, the ECU 102 delays the transient response as the fixing position of the waste gate valve 114 is on the increasing side of the exhaust gas inflow amount of the turbine 118, and further, the transient response is increased as the rotational speed of the internal combustion engine 10 is higher. It can be delayed more.
With such a configuration, it is possible to suppress the occurrence of inadvertently large torque even when the driver of the vehicle performs the same accelerator operation as when the waste gate valve 114 is abnormal.

  In addition, the internal combustion engine 10 includes a variable valve mechanism that varies the valve lift amount and / or valve timing of the intake valve, and the ECU 102 controls the variable valve mechanism to adjust the intake air amount of the internal combustion engine 10. In this case (when the variable valve mechanism functions as an intake air amount adjustment mechanism), the ECU 102 limits the variable range of the valve lift amount and / or valve timing by the variable valve mechanism to increase the intake air amount of the internal combustion engine 10. Can be suppressed.

  Further, the ECU 102 calculates a target intake air amount of the internal combustion engine 10, calculates a target value of the intake air amount adjustment mechanism (target opening of the electric throttle valve 107) based on the target intake air amount, and sets this target value. When the intake air amount adjusting mechanism (electric throttle valve 107) is controlled accordingly, the ECU 102 sets the target intake air amount in accordance with the fixing position (and engine speed) of the waste gate valve 114 when the waste gate valve 114 is abnormal. It is possible to limit the upper limit value or to perform a process of delaying the transient response of the target intake air amount in accordance with the fixing position of the waste gate valve 114.

Here, the technical idea that can be understood from the above-described embodiment will be described below.
In one aspect, the control device for an internal combustion engine includes a turbocharger, an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of the turbocharger, and a sensor that outputs a position signal of the electric control valve mechanism. A control unit applied to the internal combustion engine, the diagnostic means for detecting the presence or absence of an abnormality of the electric control valve mechanism, and an intake air amount of the internal combustion engine when an abnormality of the electric control valve mechanism is detected Control means for suppressing the increase of the electric control valve mechanism more than when the electric control valve mechanism is normal, and the control means detects the position of the electric control valve mechanism detected by the sensor of the exhaust gas inflow amount of the turbine. An increase in the intake air amount of the internal combustion engine is further suppressed as the value increases.

In a preferred aspect of the control device, the control means increases the intake air amount of the internal combustion engine as the position of the electric control valve mechanism detected by the sensor is closer to the exhaust gas inflow amount side of the turbine. The increase in the intake air amount of the internal combustion engine is further suppressed as the rotational speed of the internal combustion engine is higher.
In another preferred aspect, the internal combustion engine includes an intake air amount adjustment mechanism that adjusts an intake air amount in an intake system, and the control means restricts a variable range of the intake air amount adjustment mechanism to reduce the intake of the internal combustion engine. Suppresses the increase in air volume.

In still another preferred aspect, the internal combustion engine includes an electrically controlled throttle valve, and the control means increases the intake air amount of the internal combustion engine by changing the opening upper limit value of the electrically controlled throttle valve to a low value. Suppress.
In still another preferred aspect, the control means includes a transient in an increase change in the intake air amount of the internal combustion engine as the position of the electric control valve mechanism detected by the sensor is on the increase side of the exhaust gas inflow amount of the turbine. Delay response more.

  In one aspect of the control method of the internal combustion engine, a turbocharger, an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of the turbocharger, a sensor that outputs a position signal of the electric control valve mechanism, A control method applied to an internal combustion engine comprising: a position of the sensor when the occurrence of the abnormality is detected by detecting whether or not an abnormality that cannot open and close the electric control valve mechanism has occurred. A limit value for suppressing an increase in the intake air amount of the internal combustion engine is variably set based on the signal, and the intake air amount of the internal combustion engine is controlled according to the limit value.

  DESCRIPTION OF SYMBOLS 10 ... Internal combustion engine, 102 ... Electronic control unit (control device), 112 ... Exhaust pipe, 113 ... Waste gate, 114 ... Waste gate valve (electric control valve mechanism), 114a ... Actuator, 114b ... Opening sensor, 116 ... Turbo Charger, 117 ... compressor, 118 ... turbine, 121 ... crank angle sensor, 122 ... water temperature sensor

Claims (2)

A control device applied to an internal combustion engine, comprising: a turbocharger; an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of the turbocharger; and a sensor that outputs a position signal of the electric control valve mechanism. ,
Diagnostic means for detecting the presence or absence of an abnormality of the electric control valve mechanism;
Control means for suppressing an increase in the intake air amount of the internal combustion engine more than when the electric control valve mechanism is normal when an abnormality of the electric control valve mechanism is detected;
With
The control means further suppresses the increase in the intake air amount of the internal combustion engine as the position of the electric control valve mechanism detected by the sensor is on the increase side of the exhaust gas inflow amount of the turbine, and rotates the internal combustion engine. The higher the speed, the more the increase in the intake air amount of the internal combustion engine is suppressed .
Control device for internal combustion engine. A control method applied to an internal combustion engine comprising: a turbocharger; an electric control valve mechanism that adjusts an exhaust gas inflow amount of a turbine of the turbocharger; and a sensor that outputs a position signal of the electric control valve mechanism. ,
A first step of detecting whether or not an abnormality that prevents the electric control valve mechanism from opening and closing has occurred ;
A second step of suppressing an increase in the intake air amount of the internal combustion engine when the occurrence of the abnormality is detected as compared to when the electric control valve mechanism is normal;
Including
The second step further suppresses the increase in the intake air amount of the internal combustion engine as the position of the electric control valve mechanism detected by the sensor is on the increase side of the exhaust gas inflow amount of the turbine. The higher the rotational speed, the more the increase in the intake air amount of the internal combustion engine is suppressed .
A method for controlling an internal combustion engine.