JP2010090864A - Internal combustion engine device, vehicle and execution method for valve inspection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly execute the inspection of an EGR (exhaust gas recirculation) valve for adjusting the supply quantity of the exhaust emission of an internal combustion engine to an intake system. <P>SOLUTION: The opening of the throttle valve of the engine is set to be a learning opening THisc (S100) and a target opening EB* as a target value of an opening, when the EGR valve is opened, is set so that the larger the learning opening THisc becomes, the larger the target opening EB* becomes (S115) and whether the EGR valve works normally or not is determined using an opening time intake pressure Popn while the opening of the EGR valve is set to be the target opening EB* (S120-S210). Thus, the change in an opening time intake pressure Popn owing to the change in the learning opening THisc is suppressed and the inspection of the EGR valve can be conducted more properly. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an internal combustion engine device, a vehicle, and a valve inspection execution method.

Conventionally, in this type of internal combustion engine device, when the engine is idling, the amount of air flowing by bypassing the throttle valve is adjusted by an idle speed control valve (hereinafter referred to as an ISC valve) and a part of the exhaust gas is taken in. An exhaust gas recirculation (exhaust gas recirculation, hereinafter referred to as EGR) for adjusting the flow rate of exhaust gas to be recirculated to the intake side with an EGR valve has been proposed (for example, see Patent Document 1). In this apparatus, when the control amount of the ISC valve changes more than a predetermined value while the abnormality determination of the EGR valve is being performed, the abnormality determination of the EGR valve based on the change in the intake air amount in the intake pipe is stopped. It is said that the abnormality determination of the EGR valve can be accurately performed without being affected by the change in the intake air amount accompanying the change in the control amount of the valve.
JP-A-8-158955

  In the internal combustion engine apparatus described above, the abnormality of the EGR valve is determined on the basis of the change in the intake air amount. However, the EGR valve is in a state in which the throttle opening of the engine is set to the idle opening that is the opening when performing idle operation. In some cases, the EGR valve is inspected based on the intake pressure that is the pressure of the intake air in the intake pipe when the valve is opened and closed. In such an internal combustion engine device, the operation of the EGR valve may not be properly inspected. For example, in general, in the internal combustion engine apparatus described above, idle learning is performed to learn the throttle opening when the engine is idling, and the learning value obtained by idle learning is used as the idle opening. Since the learned value obtained in (1) fluctuates depending on the temperature of the engine oil or the like, the throttle opening when the EGR valve is inspected also fluctuates. When the throttle opening when the EGR valve is inspected varies, the intake pressure also varies. Therefore, the EGR valve may not be properly inspected due to the variation in intake pressure. In particular, when the throttle opening when the EGR valve is inspected is relatively large, the negative pressure in the intake pipe becomes small. Therefore, the change in the intake pressure when the EGR valve is opened and closed becomes small, and the EGR valve is properly inspected. There are things you can't do.

  The main object of the internal combustion engine device and the vehicle and the valve inspection execution method of the present invention is to more appropriately perform the inspection of the valve for adjusting the supply amount of the exhaust gas of the internal combustion engine to the intake system.

  The internal combustion engine device and the vehicle and the valve inspection execution method of the present invention employ the following means in order to achieve the main object described above.

The first internal combustion engine device of the present invention is
An internal combustion engine;
An exhaust supply means for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system, and opening the valve to supply the exhaust gas to the intake system;
An intake pressure detecting means for detecting an intake pressure which is a pressure of intake air in the intake system;
When performing a valve inspection for inspecting the normal operation of the valve of the exhaust gas supply means such that the learning opening obtained by idle learning for learning the throttle opening when the internal combustion engine is idling is increased. Target opening setting means for setting a target opening of the valve of the exhaust supply means;
When a predetermined execution condition for executing the valve inspection is satisfied, the throttle opening of the internal combustion engine is set to the learning opening, and the valve of the exhaust supply means is opened to the set target opening. Valve inspection execution means for executing the valve inspection based on the intake pressure detected by the intake pressure detection means with a valve opening and closing operation that opens and closes at a degree;
It is a summary to provide.

  In this first internal combustion engine device of the present invention, the normal operation of the valve of the exhaust supply means tends to increase as the learning opening obtained by idle learning for learning the throttle opening when the internal combustion engine is idling is increased. The target opening degree of the valve of the exhaust gas supply means when executing the valve inspection is set, and the throttle opening degree of the internal combustion engine is learned when the predetermined execution condition for executing the valve inspection is satisfied. In addition, the valve inspection is executed based on the intake pressure detected by the intake pressure detecting means with the valve opening / closing operation for opening and closing the valve of the exhaust supply means at the opening degree up to the set target opening degree. Thereby, even when the learning opening degree obtained by idle learning changes, the valve inspection can be executed more appropriately.

  In such a first internal combustion engine device of the present invention, the valve inspection execution means sets the throttle opening of the internal combustion engine to the learning opening and the valve of the exhaust supply means when the predetermined execution condition is satisfied. The intake pressure detected by the intake pressure detection means in the closed state and detected by the intake pressure detection means when the first predetermined time has elapsed since the valve was opened from the closed state. Exhaust supply means based on the intake pressure and the intake pressure detected by the intake pressure detection means when the second predetermined time has elapsed since the valve was closed after the first predetermined time had elapsed It can also be a means for performing a valve inspection by determining whether or not the valve of the present invention operates normally. In this way, the valve inspection can be executed more appropriately.

The second internal combustion engine device of the present invention is
An internal combustion engine;
An exhaust supply means for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system, and opening the valve to supply the exhaust gas to the intake system;
An intake pressure detecting means for detecting an intake pressure which is a pressure of intake air in the intake system;
A determination threshold value for determining the normal operation of the valve of the exhaust gas supply means is set such that the learning opening degree obtained by idle learning for learning the throttle opening degree when the internal combustion engine is idling is increased. A threshold setting means for determination,
When a predetermined execution condition for executing the valve inspection is satisfied, when the valve of the exhaust supply means is opened with the throttle opening of the internal combustion engine being set to the learning opening, the intake pressure detection means Intake that is the difference between the detected intake pressure and the intake pressure detected by the intake pressure detection means when the valve of the exhaust supply means is closed with the throttle opening of the internal combustion engine set to the learning opening When the pressure difference is larger than the set determination threshold value, it is determined whether the valve of the exhaust supply means is normal, and when the intake pressure difference is less than the set determination threshold value, it is determined whether the valve of the exhaust supply means is abnormal. Valve inspection execution means for executing the valve inspection by,
It is a summary to provide.

  In the second internal combustion engine device of the present invention, the normal operation of the valve of the exhaust supply means tends to decrease as the learning opening obtained by idle learning for learning the throttle opening when the internal combustion engine is idling is increased. When the predetermined threshold for executing the valve inspection is satisfied and the throttle opening of the internal combustion engine is set to the learning opening, the valve of the exhaust supply means is opened. An intake pressure difference that is the difference between the intake pressure that is the pressure of the intake air in the intake system and the intake pressure when the valve of the exhaust supply means is closed with the throttle opening of the internal combustion engine set to the learning opening is set. When the value is larger than the determination threshold, it is determined whether the valve of the exhaust supply means is normal, and when the difference in intake pressure is less than the set determination threshold, the abnormality of the valve of the exhaust supply means is determined. To run the valve inspection by. Thereby, even when the learning opening degree obtained by idle learning changes, the valve inspection can be executed more appropriately.

The vehicle of the present invention
The first or second internal combustion engine apparatus of the present invention according to any one of the above-described aspects, that is, basically includes an internal combustion engine and a valve for adjusting the supply amount of exhaust gas from the internal combustion engine to an intake system An exhaust supply means for opening the valve and supplying the exhaust gas to the intake system, an intake pressure detection means for detecting an intake pressure that is a pressure of intake air in the intake system, and an idling operation of the internal combustion engine The target opening of the valve of the exhaust gas supply means when performing the valve inspection for inspecting the normal operation of the valve of the exhaust gas supply means such that the learning opening degree obtained by the idle learning for learning the throttle opening degree increases becomes larger. Target opening degree setting means for setting the degree of exhaust, and when a predetermined execution condition for executing the valve inspection is satisfied, the throttle opening degree of the internal combustion engine is set to the learning opening degree and the exhaust supply Valve inspection execution means for executing the valve inspection based on the intake pressure detected by the intake pressure detection means with a valve opening and closing operation for opening and closing the stage valve at an opening degree up to the set target opening degree; A first internal combustion engine device according to the present invention, or an internal combustion engine, and a valve for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system, and opening the valve to make the exhaust gas into the intake system Exhaust supply means for supplying, intake pressure detecting means for detecting intake pressure, which is the pressure of intake air in the intake system, and learning obtained by idle learning for learning the throttle opening when idling the internal combustion engine A determination threshold setting means for setting a determination threshold for determining the normal operation of the valve of the exhaust supply means in a tendency to decrease as the opening degree increases, and for executing the valve inspection When a predetermined execution condition is satisfied, the intake pressure detected by the intake pressure detection means when the valve of the exhaust supply means is opened with the throttle opening of the internal combustion engine being the learning opening, and the internal combustion engine An intake pressure difference, which is a difference from the intake pressure detected by the intake pressure detecting means when the valve of the exhaust supply means is closed in a state where the throttle opening of the engine is the learning opening, is set for the determination. When it is larger than the threshold value, it is judged whether the valve of the exhaust gas supply means is normal, and when the difference in intake pressure is less than or equal to the set threshold value for judgment, the valve inspection is executed by judging the abnormality of the valve of the exhaust gas supply means. A second internal combustion engine device of the present invention comprising: a valve inspection execution unit;
A generator that inputs and outputs power;
It is connected to three shafts, that is, a drive shaft coupled to an axle, an output shaft of the internal combustion engine, and a rotating shaft of the generator, and the remaining power is determined based on power input / output to / from any two of the three shafts. 3-axis power input / output means for inputting / outputting power to the shaft;
An electric motor for inputting and outputting power to the drive shaft;
Power storage means for exchanging power with the generator and the motor;
It is a summary to provide.

  Since the vehicle of the present invention includes the first or second internal combustion engine device of the present invention according to any one of the above-described aspects, the effects exhibited by the first or second internal combustion engine device of the present invention, for example, The same effect as the effect that the valve inspection can be executed more appropriately can be obtained.

The first valve inspection execution method of the present invention includes:
The exhaust gas in the internal combustion engine device comprising: an internal combustion engine; and an exhaust gas supply unit that has a valve for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system and opens the valve to supply the exhaust gas to the intake system A valve inspection execution method for checking normal operation of a valve of a supply means,
A learning opening obtained by idle learning that learns a throttle opening when the internal combustion engine is idled when a predetermined execution condition for executing the valve inspection is established. And the intake air pressure in the intake system with a valve opening and closing operation that opens and closes the valve of the exhaust supply means at an opening up to a target opening that is set to increase as the learning opening increases. The valve inspection is performed based on the intake pressure.

  In the first valve inspection execution method of the present invention, when a predetermined execution condition for executing the valve inspection is satisfied, the throttle opening of the internal combustion engine is set to the throttle opening when the internal combustion engine is idling. Intake with a valve opening and closing operation that opens and closes the valve of the exhaust supply means to the target opening that is set to a tendency to increase as the learning opening increases, with the learning opening obtained by idle learning to learn Valve inspection is executed based on the intake pressure, which is the pressure of the intake air in the system. Thereby, the change of the negative pressure of an intake system accompanying the change of the learning opening degree obtained by idle learning can be suppressed, and a valve inspection can be executed more appropriately.

The second valve inspection execution method of the present invention includes:
An internal combustion engine, an exhaust supply means having a valve for adjusting a supply amount of exhaust gas from the internal combustion engine to the intake system, and opening the valve to supply the exhaust gas to the intake system; and pressure of intake air in the intake system An intake pressure detecting means for detecting an intake pressure, and a valve inspection execution method for checking a normal operation of a valve of the exhaust supply means in an internal combustion engine device comprising:
A learning opening obtained by idle learning that learns a throttle opening when the internal combustion engine is idled when a predetermined execution condition for executing the valve inspection is established. When the valve of the exhaust gas supply means is opened with the intake air pressure being the pressure of the intake air in the intake system and the throttle opening of the internal combustion engine at the learning opening, the valve of the exhaust gas supply means When the intake pressure difference, which is the difference from the intake pressure when the engine is closed, is greater than a determination threshold set to tend to decrease as the learning opening increases, it is determined that the valve of the exhaust supply means is normal and the intake air When the pressure difference is equal to or less than the set determination threshold value, the valve inspection is executed by determining abnormality of the valve of the exhaust gas supply means. It is a sign.

  In the second valve inspection execution method of the present invention, when a predetermined execution condition for executing the valve inspection is satisfied, the throttle opening of the internal combustion engine is learned when the internal combustion engine is idling. With the learning opening obtained with idle learning, the intake air pressure in the intake system when the valve of the exhaust supply means is opened and the throttle opening of the internal combustion engine are set to the learning opening. When the intake pressure difference, which is the difference from the intake pressure when the valve of the exhaust gas supply means is closed, is larger than the threshold value for judgment set to tend to decrease as the learning opening increases, the normality of the valve of the exhaust gas supply means is judged. When the intake pressure difference is equal to or smaller than the set determination threshold value, the valve inspection is executed by determining the abnormality of the valve of the exhaust supply means. Thereby, even when the learning opening degree obtained by idle learning changes, the valve inspection can be executed more appropriately.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a hybrid vehicle 20 equipped with an internal combustion engine device as a first embodiment of the present invention. As illustrated, the hybrid vehicle 20 of the embodiment includes an engine 22, a planetary gear mechanism 30 in which a carrier 34 is connected to a crankshaft 26 as an output shaft of the engine 22 via a damper 28, and a planetary gear mechanism 30. A motor MG1 capable of generating electricity with a rotor connected to the sun gear 31, and a ring gear connected to the drive wheels 63a and 63b of the vehicle via the gear mechanism 60 and the differential gear 62 and to the ring gear 32 of the planetary gear mechanism 30. Motor MG2 having a rotor connected to shaft 32a via reduction gear 35, battery 50 for exchanging electric power with motors MG1 and MG2 via inverters 41 and 42, and hybrid electronic control unit 70 for controlling the entire vehicle. With. The motors MG1 and MG2 are both driven and controlled by a motor electronic control unit (hereinafter referred to as motor ECU) 40, and the motor ECU 40 has signals necessary for driving and controlling the motors MG1 and MG2, for example, Signals from rotational position detection sensors 43 and 44 that detect the rotational positions of the rotors of the motors MG1 and MG2 are input. The motor ECU 40 outputs switching control signals to the inverters 41 and 42. Further, the motor ECU 40 outputs data related to the states of the motors MG1, MG2 to the hybrid electronic control unit 70 by communication as necessary. Further, the battery 50 is managed by a battery electronic control unit (hereinafter referred to as a battery ECU) 52, and the battery ECU 52 has a signal necessary for managing the battery 50, for example, installed between terminals of the battery 50. Terminal voltage from the voltage sensor (not shown), charge / discharge current from a current sensor (not shown) attached to the power line 54 connected to the output terminal of the battery 50, battery from the temperature sensor 51 attached to the battery 50 The temperature Tb or the like is input, and data relating to the state of the battery 50 is output to the hybrid electronic control unit 70 by communication as necessary.

  The engine 22 is configured as an internal combustion engine capable of outputting power using a hydrocarbon-based fuel such as gasoline or light oil, and the air purified by an air cleaner 122 is passed through a throttle valve 124 as shown in FIG. Inhalation and gasoline are injected from the fuel injection valve 126 to mix the sucked air and gasoline, and this mixture is sucked into the combustion chamber through the intake valve 128 and explosively burned by an electric spark from the spark plug 130. Thus, the reciprocating motion of the piston 132 pushed down by the energy is converted into the rotational motion of the crankshaft 26. The exhaust from the engine 22 is purified by having a purification catalyst (three-way catalyst) 134a that purifies harmful components such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) by opening an exhaust valve 129. The air is discharged to the outside air via the device 134 and supplied to the intake side via the EGR system 160. The EGR system 160 includes an EGR pipe 162 that is connected to the rear stage of the purification device 134 and supplies exhaust gas to a surge tank on the intake side, and an EGR valve 164 that is disposed in the EGR pipe 162 and is driven by a stepping motor 163. Then, by adjusting the opening degree of the EGR valve 164, the supply amount of exhaust gas as non-combustion gas is adjusted and supplied to the intake side. In this way, the engine 22 can suck a mixture of air, exhaust, and gasoline into the combustion chamber.

  The engine 22 is controlled by an engine electronic control unit (hereinafter referred to as engine ECU) 24. The engine ECU 24 is configured as a microprocessor centered on the CPU 24a, and includes a ROM 24b that stores a processing program, a RAM 24c that temporarily stores data, an input / output port and a communication port (not shown), in addition to the CPU 24a. . The engine ECU 24 receives signals from various sensors that detect the state of the engine 22, for example, a crank position from the crank position sensor 140 that detects the rotational position of the crankshaft 26, and a water temperature that detects the temperature of cooling water in the engine 22. Cooling water temperature Tw from sensor 142, in-cylinder pressure from a pressure sensor (not shown) installed in the combustion chamber, and a cam that detects the rotational position of a camshaft that opens and closes intake valve 128 and intake valve 129 for intake and exhaust to the combustion chamber A cam position from the position sensor 144; a throttle position from the throttle valve position sensor 146 that detects the position of the throttle valve 124; an intake air amount GA from an air flow meter 148 that is attached to the intake pipe and detects the mass flow rate of the intake air; the same The intake air temperature from the temperature sensor 149 attached to the intake pipe, the intake pressure Pin from the intake pressure sensor 158 that detects the pressure in the intake pipe, the air-fuel ratio from the air-fuel ratio sensor 135a, the oxygen signal from the oxygen sensor 135b, etc. are input. Is entered through the port. The engine ECU 24 also integrates various control signals for driving the engine 22, such as a drive signal to the fuel injection valve 126, a drive signal to the throttle motor 136 that adjusts the position of the throttle valve 124, and an igniter. The control signal to the ignition coil 138, the control signal to the variable valve timing mechanism 150 that can change the opening / closing timing of the intake valve 128, the drive signal to the stepping motor 163 that adjusts the opening degree of the EGR valve 164, and the like are output. It is output through the port. When the learning condition such as the condition that the cooling water temperature Tw of the engine 22 is equal to or higher than a predetermined temperature (for example, 75 ° C., 80 ° C., 85 ° C.) or the condition that the engine 22 is idling is established. The opening degree of the throttle valve 124, the fuel injection amount from the fuel injection valve 126, the ignition timing by the ignition plug 130, etc. necessary for setting the engine speed Ne to the idling engine speed Nidl (for example, 900 rpm, 1000 rpm, etc.) Idle learning is performed to learn a control amount (hereinafter referred to as idle control amount) when performing idling, and a learning opening THisc that is a learning value of the opening of the throttle valve 124 obtained by idle learning or other idle control. The learning value of the quantity is stored in the RAM 24c for the control at the time of idling of the engine 22 after the next time. Iteiru. The learning values such as the learning opening THisc stored in this way are not erased even when the ignition is turned off, and are stored as information in the RAM 24c. Further, the engine ECU 24 communicates with the hybrid electronic control unit 70, controls the operation of the engine 22 by a control signal from the hybrid electronic control unit 70, and outputs data related to the operating state of the engine 22 as necessary. . The engine ECU 24 also calculates the rotational speed of the crankshaft 26, that is, the rotational speed Ne of the engine 22 based on the crank position from the crank position sensor 140.

  The hybrid electronic control unit 70 is configured as a microprocessor centered on the CPU 72, and in addition to the CPU 72, a ROM 74 for storing processing programs, a RAM 76 for temporarily storing data, an input / output port and communication not shown. And a port. The hybrid electronic control unit 70 includes an ignition signal from an ignition switch 80, a shift position SP from a shift position sensor 82 that detects the operation position of the shift lever 81, and an accelerator pedal position sensor 84 that detects the amount of depression of the accelerator pedal 83. The accelerator pedal opening Acc from the vehicle, the brake pedal position BP from the brake pedal position sensor 86 for detecting the depression amount of the brake pedal 85, the vehicle speed V from the vehicle speed sensor 88, and the like are input via the input port. As described above, the hybrid electronic control unit 70 is connected to the engine ECU 24, the motor ECU 40, and the battery ECU 52 via the communication port, and exchanges various control signals and data with the engine ECU 24, the motor ECU 40, and the battery ECU 52. ing.

  The hybrid vehicle 20 of the embodiment thus configured calculates the required torque to be output to the ring gear shaft 32a as the drive shaft based on the accelerator opening Acc and the vehicle speed V corresponding to the depression amount of the accelerator pedal 83 by the driver. Then, the operation of the engine 22, the motor MG1, and the motor MG2 is controlled so that the required power corresponding to the required torque is output to the ring gear shaft 32a. As operation control of the engine 22, the motor MG1, and the motor MG2, the operation of the engine 22 is controlled so that power corresponding to the required power is output from the engine 22, and all of the power output from the engine 22 is transmitted to the planetary gear mechanism 30. Torque conversion is performed by the motor MG1 and the motor MG2, and the torque conversion operation mode for driving and controlling the motor MG1 and the motor MG2 so as to be output to the ring gear shaft 32a and the power required for charging and discharging the battery 50 are met. Operation of the engine 22 is controlled so that power is output from the engine 22, and all or part of the power output from the engine 22 with charge / discharge of the battery 50 is transmitted to the planetary gear mechanism 30, the motor MG1, and the motor MG2. The required power is output to the ring gear shaft 32a with torque conversion by A charge / discharge operation mode for driving and controlling the motor MG1 and the motor MG2 and a motor operation mode for controlling the operation so that the operation of the engine 22 is stopped and power corresponding to the required power from the motor MG2 is output to the ring gear shaft 32a. .

  Next, the operation of the internal combustion engine device mounted on the hybrid vehicle 20 of the first embodiment configured as described above, particularly the operation when inspecting the EGR valve 164 will be described. FIG. 3 is a flowchart showing an example of an EGR valve inspection routine executed by the engine ECU 24. In the EGR valve inspection routine, when the accelerator is off (accelerator opening Acc is 0), the opening of the throttle valve 124 is changed to the learning opening THisc and the fuel injection control in the engine 22 is performed with the EGR valve 164 fully closed. This is executed when the valve inspection execution condition for executing the inspection of the EGR valve 164 is satisfied while the ignition control is stopped. Here, the valve inspection execution condition is that a predetermined time (e.g., 0.8 seconds, 1.0 seconds, 1.2 seconds, etc.) has elapsed since the accelerator was turned off, or the intake air change amount is A predetermined time (for example, 0.8 seconds or 1) in which it can be determined that the state in which the intake air amount is stable while the intake air amount is less than a threshold value that can be determined as a stable state. 0.0 seconds, 1.2 seconds, etc.), a predetermined time (for example, 0.8 seconds) required for the pressure in the intake pipe to stabilize after the accelerator is turned off and the EGR valve 164 is fully closed. , 1.0 seconds, 1.2 seconds, etc.), the coolant temperature Tw of the engine 22 from the water temperature sensor 142 is a predetermined temperature (for example, 65 ° C. 70 ℃, 75 ℃, etc.) Variation amount of the rotation speed Ne of the gin 22 is assumed to be established when all of that is less than the predetermined change amount is satisfied.

  When the EGR valve inspection routine is executed, the CPU 24a of the engine ECU 24 first drives and controls the throttle motor 136 so as to maintain the opening of the throttle valve 124 at the learning opening THisc (step S100). A process of inputting the intake pressure Pin and storing it as a start / close intake pressure Psta in a predetermined area of the RAM 24c is executed (step S110).

  Subsequently, based on the learned opening THisc stored in the RAM 24c, a target opening EB *, which is a target value for opening the EGR valve 164, is set (step S115), and the opening of the EGR valve 164 is set. The stepping motor 163 is driven so as to reach the set target opening degree EB * (step S120), and the time required for the pressure in the intake pipe of the engine 22 to stabilize after the stepping motor 163 is driven in this way is determined by experiments or the like. Waiting for a predetermined time t1 (for example, 1 second, 1.2 seconds, 1.4 seconds, etc.) to elapse (step S130), the intake pressure Pin is input from the intake pressure sensor 158, and a predetermined area of the RAM 24c Is stored as the intake pressure Popn at the time of opening (step S140). When the execution of this routine is started, since the EGR valve 164 is fully closed, the process of step S120 is a process of opening the opening of the EGR valve 164 from the value 0 to the target opening EB *. In the process of step S115, the target opening degree EB * is set to an opening degree determined in advance by experiment or analysis so that the opening intake pressure Popn becomes constant even if the learning opening degree THisc changes. As shown in FIG. 4, the learning opening degree THisc is set to increase linearly as the learning opening degree THisc increases. Setting the target opening degree EB * in this way is based on the following reason. The learning opening THisc obtained in the idle learning changes in accordance with changes in the temperature of the engine oil that lubricates and cools the engine, and therefore the opening of the throttle valve 124 when the EGR valve inspection routine is executed is also Change. Therefore, if the target opening EB * is made constant regardless of the learning opening THisc, the negative pressure in the intake pipe decreases (the pressure increases) as the learning opening THisc, that is, the opening of the throttle valve 124 increases, and EGR. The supply amount of the exhaust gas recirculated from the valve 164 decreases and the opening intake pressure Popn becomes small. The opening intake pressure Popn is used to determine the operation of the EGR valve 164, which will be described later. If the opening intake pressure Popn varies, the operation of the EGR valve 164 may be erroneously determined. In the embodiment, in order to suppress such erroneous determination, the target opening EB * of the EGR valve 164 is set so as to increase as the learning opening THisc increases.

  Subsequently, the stepping motor 163 is driven so that the EGR valve 164 is fully closed (step S150). After driving the stepping motor 163 in this way, the time required for the pressure in the intake pipe of the engine 22 to be stabilized is an experiment. (Step S160), the intake pressure Pin from the intake pressure sensor 158 is input, and the RAM 24c is input to wait for a predetermined time t2 (for example, 1 second, 1.2 seconds, 1.4 seconds, etc.) to elapse. Is stored in the predetermined area as the closing intake pressure Pend (step S170).

  If the RAM 24c stores the start / close intake pressure Psta, the open / close intake pressure Popn, and the end / close intake pressure Pend, the start / close intake pressure Psta, the open / close intake pressure Popn, and the end / close intake pressure Pend are stored. A determination value Pdec is calculated by the following equation (1) (step S180), the calculated determination value Pdec and the determination threshold value Pref are compared (step S190), and when the determination value Pdec is larger than the determination threshold value Pref, the EGR valve 164 Is determined to operate normally (step S200), and when the calculated determination value Pdec is equal to or less than the threshold value Pref, it is determined that the EGR valve 164 does not operate normally (step S210), and the EGR valve inspection routine is terminated. Here, the determination threshold value Pref is for determining abnormalities such as an open sticking that the EGR valve 164 is not closed from the open state, a closed sticking that the EGR valve 164 is not opened from the closed state, and a failure of the stepping motor 163. It was assumed that what was obtained by such as. Thus, the normal operation of the EGR valve 164 can be inspected by using the determination value Pdec when the EGR valve 164 is opened and closed. Then, the target opening EB * of the EGR valve 164 is set so as to increase as the learning opening THisc increases, and the opening intake pressure Popn detected with the opening of the EGR valve 164 set to the target opening EB * is used. Therefore, it is determined whether or not the EGR valve 164 operates normally. Therefore, the change in the opening intake pressure Popn due to the change in the learning opening THisc is suppressed, and the EGR valve 164 can be inspected more appropriately.

  Pdec = Popn- (Psta + Pend) / 2 (1)

  According to the hybrid vehicle 20 of the first embodiment described above, the target opening EB * that is the target value of the opening when the EGR valve 164 is opened is set so as to increase as the learning opening THisc increases, and the EGR valve Since it is determined whether or not the EGR valve 164 normally operates using the opening intake pressure Popn with the opening of 164 set to the target opening EB *, the opening intake pressure due to a change in the learning opening THisc The change in Popn is suppressed, and the EGR valve 164 can be inspected more appropriately. In addition, the intake air pressure Psta at the time of starting and closing when the valve of the EGR valve 164 is closed, and the intake air pressure Popn at the time of opening when the predetermined time t1 has elapsed after the opening operation of the EGR valve 164 from the state where the EGR valve 164 is closed By determining whether or not the EGR valve 164 normally operates based on the closing closing intake pressure Pend when the predetermined time t2 has elapsed after the EGR valve 164 has been closed after the predetermined time t1 has elapsed. Thus, the inspection of the EGR valve 164 can be executed more appropriately.

  In the hybrid vehicle 20 of the first embodiment, the target opening EB * is set to an opening at which the opening intake pressure Popn is constant regardless of the learning opening THisc in the process of step S115. The degree EB * may be set so as to increase as the learning opening THisc increases, and the determination value Pdec calculated by the above equation (1) is compared with the determination threshold value Pref within a range in which normal operation can be determined. If so, the opening intake pressure Popn may be set to an opening that varies slightly within a predetermined range in accordance with the learning opening THisc.

  In the hybrid vehicle 20 of the first embodiment, the target opening degree EB * is set to increase linearly as the learning opening degree THisc increases in the process of step S115. Since the degree of increase THisc may be set so as to increase, the curve may be set so as to increase as the learning opening THisc increases, or may be set so as to increase in a staircase shape as the learning opening THisc increases. .

  Next, the hybrid vehicle 20B of the second embodiment will be described. The hybrid vehicle 20B of the second embodiment has the same configuration as the hybrid vehicle 20 of the first embodiment shown in FIG. Therefore, the configuration of the hybrid vehicle 20B of the second embodiment is denoted by the same reference numeral for the same configuration as the hybrid vehicle 20 of the first embodiment, and the description and illustration thereof are omitted.

  In the hybrid vehicle 20B of the second embodiment, the engine ECU 24 executes an EGR valve inspection routine illustrated in FIG. 5 instead of the EGR valve inspection routine shown in FIG. The EGR valve inspection routine of FIG. 5 does not perform step S115 of the EGR valve inspection routine of FIG. 3, performs step S120B instead of step S120, and performs step S185B. Except for this, it is the same as the EGR valve inspection routine of FIG. Therefore, the same step number is assigned to the same process, and detailed description thereof is omitted. In the EGR valve inspection routine of FIG. 5, the fuel injection control and the ignition control in the engine 22 are performed in a state where the opening of the throttle valve 124 is set to the learning opening THisc and the EGR valve 164 is fully closed as the accelerator pedal 83 is turned off. This is executed when the valve inspection execution condition for executing the inspection of the EGR valve 164 is satisfied while the operation is stopped. The valve inspection execution conditions have been described above.

  When the EGR valve inspection routine is executed, the throttle motor 136 is driven and controlled so as to maintain the opening degree of the throttle valve 124 at the learning opening degree THisc (step S100), and the intake pressure Pin is input from the intake pressure sensor 158 to receive the RAM 24c. (Step S110), and then the opening degree of the EGR valve 164 corresponds to a preset target opening degree EB * (for example, 80 degrees or full opening). The stepping motor 163 is driven so as to achieve an opening degree (step S120B). In this way, after the stepping motor 163 is driven, it waits for a predetermined time t1 to elapse (step S130), and the intake pressure Pin is input from the intake pressure sensor 158 and stored in the predetermined area of the RAM 24c as the opening intake pressure Popn ( Step S140). Then, the stepping motor 163 is driven so that the EGR valve 164 is fully closed (step S150). After the stepping motor 163 is thus driven, a predetermined time t2 (for example, 1 second, 1.2 seconds, 1.4 seconds, etc.) ) Elapses (step S160), the intake pressure Pin from the intake pressure sensor 158 is input and stored in the predetermined area of the RAM 24c as the end-close intake pressure Pend (step S170), and the start-close intake pressure Based on the Psta, the opening intake pressure Popn and the end closing intake pressure Pend, the determination value Pdec is calculated by the above-described equation (1) (step S180).

  Subsequently, a determination threshold value Pref used when determining normal operation of the EGR valve 164 is set based on the learning opening THisc (step S185B), and the calculated determination value Pdec is compared with the set determination threshold value Pref. (Step S190), it is determined that the EGR valve 164 operates normally when the determination value Pdec is larger than the determination threshold value Pref (Step S200), and the EGR valve 164 does not operate normally when the calculated determination value Pdec is less than or equal to the threshold value Pref. It is determined that there is an abnormality (step S210), and the EGR valve inspection routine is terminated. In the process of step S185B, the determination threshold value Pref is set in advance by experiment or analysis as a value that can be used to determine whether or not the EGR valve 164 operates normally compared to the determination value Pdec. As shown, the learning opening degree THisc is set so as to decrease linearly as the learning opening degree THisc increases. The determination threshold value Pref is set in this way based on the following reason. As described above, the learning opening THisc changes depending on the state of the engine 22, and as the learning opening THisc, that is, the opening of the throttle valve 124 increases, the negative pressure in the intake pipe decreases (the pressure increases). When the negative pressure in the pipe decreases, the supply amount of exhaust gas recirculated from the EGR valve 164 decreases and the opening intake pressure Popn decreases. As described above, one half of the sum of the intake air pressure Popn at the time of opening and the intake air pressure Pend at the time of closing, that is, the intake air obtained by subtracting the average value of the intake pressure when the EGR valve 164 is closed from the open intake pressure Popn Since the pressure difference is set to the determination value Pdec, the determination value Pdec decreases as the opening intake pressure Popn decreases. In order to compare the determination value Pdec and the determination threshold value Pref to determine whether or not the EGR valve 164 is normally differential, if the determination threshold value Pref is made constant regardless of the learning opening THisc, the EGR valve 164 The operation may be misjudged. In the embodiment, in order to suppress such erroneous determination, the determination threshold value Pref is set so as to decrease as the learning opening THisc increases. In this way, the determination threshold value Pref is set so as to decrease as the learning opening THisc increases, and it is determined whether or not the EGR valve 164 operates normally using such a determination threshold value Pref. Even if it changes, it can be determined whether the EGR valve 164 is operating normally, and the EGR valve 164 can be properly inspected.

  According to the hybrid vehicle 20B of the second embodiment described above, the determination threshold value Pref is set so as to decrease as the learning opening THisc increases, and the EGR valve 164 operates normally using such a determination threshold value Pref. Therefore, even when the learning opening THisc changes, the EGR valve 164 can be properly inspected.

  In the hybrid vehicle 20B of the second embodiment, the determination threshold value Pref is set to decrease linearly as the learning opening THisc increases in the process of step S185B, but the determination threshold value Pref is set to the learning opening THisc. Therefore, it may be set so as to decrease as the learning opening THisc increases. Alternatively, the learning opening THisc may be set to decrease in a curved line, or may be set to decrease in a stepwise manner as the learning opening THisc increases.

  In the hybrid vehicles 20 and 20B of the first embodiment and the second embodiment, when the execution of the EGR valve inspection is started, the start is the intake pressure Pin from the intake pressure sensor 158 when the EGR valve 164 is fully closed. Opening intake pressure Popn and EGR valve 164 which are the intake pressure Pin when the predetermined time t1 has elapsed after the stepping motor 163 is driven so that the opening intake pressure Psta and the opening of the EGR valve 164 become the predetermined opening EBref. Is determined whether or not the EGR valve 164 operates normally on the basis of the end closing intake pressure Pend, which is the intake pressure Pin when a predetermined time t2 has elapsed after the stepping motor 163 is driven so that the valve is fully closed. The EG is based on the intake pressure Pin from the intake pressure sensor 158 when the EGR valve 164 is opened and closed. For example, whether the EGR valve 164 operates normally depending on whether the difference is equal to or larger than the threshold value or less than the threshold value using only the opening intake pressure Popn and the start / close intake pressure Psta. Whether or not the EGR valve 164 operates normally is determined based on whether or not the difference is equal to or greater than a threshold value or less than the threshold value using only the intake pressure Popn at the time of opening and the intake pressure Pend at the time of closing and closing. It is good.

  In the hybrid vehicles 20 and 20B of the first and second embodiments, the valve inspection execution condition is that a predetermined time has elapsed since the accelerator was turned off, and the intake air change amount is stable when the intake air amount of the engine 22 is stable. It is determined that a predetermined time has elapsed in which the intake air amount is stable in a state that is less than a threshold value that can be determined as having been determined, and the EGR valve 164 has been accelerator-off. , The predetermined time required for the pressure in the intake pipe to stabilize has elapsed, and the cooling water temperature Tw of the engine 22 from the water temperature sensor 142 indicates that the engine 22 has been warmed up. It is assumed that the above condition is satisfied when the temperature is equal to or higher than the temperature and the change amount of the rotational speed Ne of the engine 22 is less than the predetermined change amount. Or shall satisfied when Tasa may be those established when these different requirements have been met.

  In the hybrid vehicles 20 and 20B of the first and second embodiments, the power of the motor MG2 is shifted by the reduction gear 35 and output to the ring gear shaft 32a. However, the hybrid vehicle 120 of the modified example of FIG. As illustrated, the power of the motor MG2 is output to an axle (an axle connected to the wheels 64a and 64b in FIG. 7) different from the axle to which the ring gear shaft 32a is connected (the axle to which the drive wheels 63a and 63b are connected). It is good also as what to do.

  In the embodiment, the internal combustion engine device of the present invention has been described as being mounted on the hybrid vehicle 20, 20B, 120. However, the vehicle other than the hybrid vehicle 20, 20B, 120, for example, a motor that outputs a driving force for traveling. Without using a vehicle, traveling using only the power from the engine, vehicles such as trains other than automobiles, construction machinery, etc., moving bodies such as ships, aircraft, etc. It is good also as a form of the internal combustion engine apparatus mounted in what does not. In addition, a valve inspection execution method for inspecting the normal operation of a valve that adjusts the supply amount of the exhaust gas supplied from the exhaust gas supply device to the intake system in the internal combustion engine device may be employed.

  Here, the correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the first embodiment and the modified example, the engine 22 corresponds to “internal combustion engine”, the EGR system 160 corresponds to “exhaust supply means”, the intake pressure sensor 158 corresponds to “intake pressure detection means”, and learning The engine ECU 24 that executes the processing of step S115 of the EGR valve inspection routine of FIG. 3 for setting the target opening EB * of the EGR valve 164 so as to increase as the degree THisc increases corresponds to the “target opening setting means”. When the inspection condition is satisfied, the opening of the throttle valve 124 of the engine 22 is maintained at the learning opening THisc, and the EGR valve 164 is opened and closed at an opening up to the target opening EB *. It is determined whether or not the EGR valve 164 is normal based on the atmospheric pressure Psta, the opening intake pressure Popn, and the end closing intake pressure Pend. Step of EGR valve inspection routine in FIG. 3 for executing the valve inspection S100, S110, the engine ECU24 for executing processing of S120~S210 correspond to the "valve test execution means" by. In the second embodiment and the modified example, the engine 22 corresponds to an “internal combustion engine”, the EGR system 160 corresponds to an “exhaust supply unit”, the intake pressure sensor 158 corresponds to an “intake pressure detection unit”, The engine ECU 24 that executes the processing of step S185B of the EGR valve inspection routine of FIG. 5 that sets the determination threshold value Pref so that it becomes smaller as the learning opening degree Hisc becomes larger corresponds to “determination threshold setting means”, and the valve inspection condition is When established, the opening of the throttle valve 124 of the engine 22 is maintained at the learning opening THisc, and a half of the sum of the intake air pressure Psta at the start closing time and the intake air pressure Psta at the end closing time is reduced from the open intake pressure Popn. When the determination value Pdec is set as reduced and the determination value Pdec is larger than the determination threshold value Pref, the EGR valve 1 4 and steps S100 to S180 of the EGR valve inspection routine of FIG. 5 for inspecting the EGR valve 164 by determining abnormality of the EGR valve 164 when the determination value Pdec is equal to or less than the determination threshold value Pref. The engine ECU 24 that executes the processes of S190 to S210 corresponds to “valve inspection execution means”. In the first embodiment, the second embodiment, and the modified example, the motor MG1 corresponds to a “generator”, the planetary gear mechanism 30 corresponds to a “three-axis power input / output means”, and the motor MG2 corresponds to a “motor”. ”And the battery 50 corresponds to“ power storage means ”.

  Here, the “internal combustion engine” is not limited to an internal combustion engine that outputs power using a hydrocarbon fuel such as gasoline or light oil, and may be any type of internal combustion engine such as a hydrogen engine. The “exhaust supply means” is not limited to the EGR system 160, and has a valve for adjusting the supply amount of the exhaust gas of the internal combustion engine to the intake system, and opens the valve to supply the exhaust gas to the intake system. Anything can be used. The “intake pressure detecting means” is not limited to the intake pressure sensor 158, and any means may be used as long as it detects the intake pressure that is the pressure of the intake air in the intake system. Further, the “target opening degree setting means” is not limited to the one that sets the target opening degree EB * of the EGR valve 164 so as to increase as the learning opening degree THisc increases. The target opening of the valve of the exhaust supply means when performing a valve inspection for checking the normal operation of the valve of the exhaust supply means so that the learning opening obtained by idle learning for learning the throttle opening of the engine increases. Anything can be used as long as it is set. As the “valve inspection execution means” of the first embodiment and the modified example, when the valve inspection condition is satisfied, the opening degree of the throttle valve 124 of the engine 22 is maintained at the learning opening degree THisc and the EGR valve 164 is opened as a target. It is determined whether or not the EGR valve 164 is normal based on the start-close intake pressure Psta, the open-close intake pressure Popn, and the end-close intake pressure Pend with an opening / closing operation up to a degree EB *. Thus, the present invention is not limited to performing valve inspection. When a predetermined execution condition for performing valve inspection is satisfied, the throttle opening of the internal combustion engine is set to the learning opening and the exhaust supply means Valve inspection is performed based on the intake pressure detected by the intake pressure detection means, with the valve opening and closing operation that opens and closes the valve at the opening to the set target opening. If it shall not may be as anything. The “determination threshold value setting means” is not limited to setting the determination threshold value Pref so as to decrease as the learning opening degree Hisc increases, but the throttle opening degree when the internal combustion engine is idling is learned. Any threshold value may be used as long as the threshold value for determination for determining the normal operation of the valve of the exhaust gas supply means is set so as to decrease as the learning opening degree obtained by idle learning increases. As the “valve inspection execution means” of the second embodiment or the modified example, when the valve inspection condition is satisfied, the opening degree of the intake valve Popn from the opening intake pressure Popn is maintained while maintaining the opening degree of the throttle valve 124 of the engine 22 at the learning opening degree THisc. The determination value Pdec is set assuming that one half of the sum of the start-close-time intake pressure Psta and the end-close-time intake pressure Pend is reduced, and when the determination value Pdec is larger than the determination threshold value Pref, it is determined that the EGR valve 164 is normal. In addition, when the determination value Pdec is equal to or less than the determination threshold value Pref, it is not limited to performing the inspection of the EGR valve 164 by determining the abnormality of the EGR valve 164, but a predetermined value for performing the valve inspection When the execution condition is satisfied, the exhaust supply engine is operated with the throttle opening of the internal combustion engine set to the learning opening. Detected by the intake pressure detection means when the valve of the exhaust supply means was closed in a state where the intake pressure detected by the intake pressure detection means when the valve was opened and the throttle opening of the internal combustion engine were set to the learning opening degree When the intake pressure difference, which is the difference from the intake pressure, is larger than the set judgment threshold value, it is judged that the valve of the exhaust supply means is normal, and when the intake pressure difference is less than the set judgment threshold value, the exhaust supply means valve abnormality As long as the valve inspection is executed by determining the above, any method may be used. The “generator” is not limited to the motor MG1 configured as a synchronous generator motor, and may be any type of generator as long as it can input and output power, such as an induction motor. The “three-axis power input / output means” is not limited to the planetary gear mechanism 30 described above, but uses a double pinion type planetary gear mechanism, a combination of a plurality of planetary gear mechanisms, or a differential gear. In this way, the drive shaft connected to the axle, the output shaft of the internal combustion engine, and the rotating shaft of the generator are connected to three shafts, such as those having a differential action different from the planetary gear, and any two of the three shafts As long as the power is input / output to / from the remaining shafts based on the power input / output to / from the shafts, any device may be used. The “motor” is not limited to the motor MG2 configured as a synchronous generator motor, and may be any type of motor such as an induction motor that inputs and outputs power to the drive shaft. The “storage means” is not limited to the battery 50 as a secondary battery, and may be anything as long as it exchanges power with a generator and an electric motor such as a capacitor.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. It is an example for specifically explaining the best mode for doing so, and does not limit the elements of the invention described in the column of means for solving the problem. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention is applicable to an internal combustion engine device, a vehicle manufacturing industry, and the like.

1 is a configuration diagram showing an outline of the configuration of a hybrid vehicle 20 equipped with an internal combustion engine device according to an embodiment of the present invention. 2 is a configuration diagram showing an outline of the configuration of an engine 22. FIG. It is a flowchart which shows an example of the EGR valve test | inspection routine performed by engine ECU24 of 1st Example. It is explanatory drawing which shows an example of the relationship between idle learning opening THisc and target opening EB *. It is a flowchart which shows an example of the EGR valve test | inspection routine performed by engine ECU24 of 2nd Example. It is explanatory drawing which shows an example of the relationship between the idle learning opening THisc and the threshold value for determination Pref. FIG. 11 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 120 according to a modification.

Explanation of symbols

  20, 20B, 120 Hybrid vehicle, 22 engine, 24 engine electronic control unit (engine ECU), 24a CPU, 24b ROM, 24c RAM, 26 crankshaft, 28 damper, 30 planetary gear mechanism, 31 sun gear, 32 ring gear, 32a Ring gear shaft, 33 pinion gear, 34 carrier, 35 reduction gear, 40 electronic control unit for motor (motor ECU), 41, 42 inverter, 43, 44 rotational position detection sensor, 50 battery, 51 temperature sensor, 52 electronic control unit for battery (Battery ECU), 54 power line, 60 gear mechanism, 62 differential gear, 63a, 63b driving wheel, 64a, 64b wheel, 70 hybrid electronic control unit, 72 CPU, 74 ROM 76 RAM, 80 Ignition switch, 81 Shift lever, 82 Shift position sensor, 83 Accelerator pedal, 84 Accelerator pedal position sensor, 85 Brake pedal, 86 Brake pedal position sensor, 88 Vehicle speed sensor, 122 Air cleaner, 124 Throttle valve, 126 Fuel Injection valve, 128 Intake valve, 129 Exhaust valve, 130 Spark plug, 132 Piston, 134 Purification device, 135a Air-fuel ratio sensor, 135b Oxygen sensor, 136, Throttle motor, 138 Ignition coil, 140 Crank position sensor, 142 Water temperature sensor, 143 Pressure sensor, 144 Cam position sensor, 146 Throttle valve position sensor, 148 Air flow meter, 149 Temperature Capacitors, 150 variable valve timing mechanism, 158 suction pressure sensor, 160 EGR system, 162 EGR pipe, 163 a stepping motor, 164 EGR valve, MG1, MG2 motor.

Claims (6)

An internal combustion engine;
An exhaust supply means for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system, and opening the valve to supply the exhaust gas to the intake system;
An intake pressure detecting means for detecting an intake pressure which is a pressure of intake air in the intake system;
When performing a valve inspection for inspecting the normal operation of the valve of the exhaust gas supply means such that the learning opening obtained by idle learning for learning the throttle opening when the internal combustion engine is idling is increased. Target opening setting means for setting a target opening of the valve of the exhaust supply means;
When a predetermined execution condition for executing the valve inspection is satisfied, the throttle opening of the internal combustion engine is set to the learning opening, and the valve of the exhaust supply means is opened to the set target opening. Valve inspection execution means for executing the valve inspection based on the intake pressure detected by the intake pressure detection means with a valve opening and closing operation that opens and closes at a degree;
An internal combustion engine device comprising: The internal combustion engine device according to claim 1,
The valve inspection execution means sets the intake pressure detection means in a state where the throttle opening of the internal combustion engine is set to the learning opening and the valve of the exhaust supply means is closed when the predetermined execution condition is satisfied. The intake pressure detected by the intake pressure detection means when the first predetermined time has elapsed since the valve was opened from the closed state to the intake pressure detected by the intake pressure and the first predetermined The valve of the exhaust supply means operates normally based on the intake pressure detected by the intake pressure detection means when the second predetermined time has elapsed since the valve was closed after a lapse of time. An internal combustion engine device which is means for executing the valve inspection by determining whether or not to perform. An internal combustion engine;
An exhaust supply means for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system, and opening the valve to supply the exhaust gas to the intake system;
An intake pressure detecting means for detecting an intake pressure which is a pressure of intake air in the intake system;
A determination threshold value for determining the normal operation of the valve of the exhaust gas supply means is set such that the learning opening degree obtained by idle learning for learning the throttle opening degree when the internal combustion engine is idling is increased. A threshold setting means for determination,
When a predetermined execution condition for executing the valve inspection is satisfied, when the valve of the exhaust supply means is opened with the throttle opening of the internal combustion engine being set to the learning opening, the intake pressure detection means Intake that is the difference between the detected intake pressure and the intake pressure detected by the intake pressure detection means when the valve of the exhaust supply means is closed with the throttle opening of the internal combustion engine set to the learning opening When the pressure difference is larger than the set determination threshold value, it is determined whether the valve of the exhaust supply means is normal, and when the intake pressure difference is less than the set determination threshold value, it is determined whether the valve of the exhaust supply means is abnormal. Valve inspection execution means for executing the valve inspection by,
An internal combustion engine device comprising: An internal combustion engine device according to any one of claims 1 to 3,
A generator that inputs and outputs power;
It is connected to three shafts, that is, a drive shaft coupled to an axle, an output shaft of the internal combustion engine, and a rotating shaft of the generator, and the remaining power is determined based on power input / output to / from any two of the three shafts. 3-axis power input / output means for inputting / outputting power to the shaft;
An electric motor for inputting and outputting power to the drive shaft;
Power storage means for exchanging power with the generator and the motor;
A vehicle comprising: The exhaust gas in the internal combustion engine device comprising: an internal combustion engine; and an exhaust gas supply unit that has a valve for adjusting a supply amount of exhaust gas of the internal combustion engine to an intake system and opens the valve to supply the exhaust gas to the intake system A valve inspection execution method for checking normal operation of a valve of a supply means,
A learning opening obtained by idle learning that learns a throttle opening when the internal combustion engine is idled when a predetermined execution condition for executing the valve inspection is established. And the intake air pressure in the intake system with a valve opening and closing operation that opens and closes the valve of the exhaust supply means at an opening up to a target opening that is set to increase as the learning opening increases. The valve inspection is executed based on the intake pressure. A valve inspection execution method, comprising: An internal combustion engine, an exhaust supply means having a valve for adjusting a supply amount of exhaust gas from the internal combustion engine to the intake system, and opening the valve to supply the exhaust gas to the intake system; and pressure of intake air in the intake system An intake pressure detecting means for detecting an intake pressure, and a valve inspection execution method for checking a normal operation of a valve of the exhaust supply means in an internal combustion engine device comprising:
A learning opening obtained by idle learning that learns a throttle opening when the internal combustion engine is idled when a predetermined execution condition for executing the valve inspection is established. When the valve of the exhaust gas supply means is opened with the intake air pressure being the pressure of the intake air in the intake system and the throttle opening of the internal combustion engine at the learning opening, the valve of the exhaust gas supply means When the intake pressure difference, which is the difference from the intake pressure when the engine is closed, is greater than a determination threshold set to tend to decrease as the learning opening increases, it is determined that the valve of the exhaust supply means is normal and the intake air When the pressure difference is equal to or less than the set determination threshold value, the valve inspection is executed by determining abnormality of the valve of the exhaust gas supply means. How to perform valve inspection.

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