Control device for internal combustion engine

Abstract

A control device for an internal combustion engine is provided that can suppress abnormal combustion caused by an excessively long fuel injection period. [Solution] An internal combustion engine control device calculates a torque upper limit value so that it decreases as the fuel pressure in a fuel tank detected by a tank pressure sensor decreases. The internal combustion engine control device compares the required torque with the torque upper limit value, and if the required torque is equal to or less than the torque upper limit value (step S140: YES), sets the fuel injection period so that an amount of fuel necessary to generate torque equivalent to the required torque is injected. On the other hand, if the required torque is greater than the torque upper limit value (step S140: NO), the internal combustion engine control device sets the fuel injection period so that an amount of fuel necessary to generate torque equivalent to the torque upper limit value is injected. The internal combustion engine control device controls the injector based on the set fuel injection period (step S120).

Description

[Technical Field]

[0001] The present invention relates to a control device for an internal combustion engine. [Background technology]

[0002] Patent Document 1 discloses a control device for an internal combustion engine that burns fuel containing hydrogen. The control device for this internal combustion engine detects the temperature and pressure of fuel supplied from a fuel tank to an injector, and adjusts the valve opening time of the injector that injects fuel into one cylinder during one cycle of that cylinder based on the temperature and pressure. In other words, it adjusts the fuel injection period of the injector. When the fuel tank pressure is low, the control device for this internal combustion engine lengthens the injection period to ensure the injection amount, thereby enabling the injector to inject the desired amount of fuel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-057489 Summary of the Invention [Problem to be solved by the invention]

[0004] If the injection period is too long, an ideal mixture of hydrogen and air cannot be formed in the combustion chamber, which may result in abnormal combustion. [Means for solving the problem]

[0005] The means for solving the above problems and their effects will be described below. A control device for an internal combustion engine that solves the above problem includes a processing circuit. The processing circuit calculates a torque upper limit value that decreases as the fuel pressure in the fuel tank detected by a tank pressure sensor that detects the fuel pressure in the fuel tank decreases. The processing circuit compares the required torque with the torque upper limit value, and if the required torque is equal to or less than the torque upper limit value, sets the fuel injection period of the injector of the internal combustion engine so as to inject an amount of fuel necessary to generate torque equivalent to the required torque. On the other hand, if the required torque is greater than the torque upper limit value, the processing circuit sets the fuel injection period of the injector of the internal combustion engine so as to inject an amount of fuel necessary to generate torque equivalent to the torque upper limit value. The injector of the internal combustion engine is controlled based on the fuel injection period set by the processing circuit. [Effects of the Invention]

[0006] The control device for an internal combustion engine described above can prevent the fuel injection period from becoming excessively long, thereby suppressing abnormal combustion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram illustrating a fuel injection system of a vehicle equipped with a control device for an internal combustion engine according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram illustrating a process for determining the fuel injection period of an injector of an internal combustion engine in a vehicle fuel injection system. [Figure 3] FIG. 3 is a schematic diagram illustrating a process for determining the torque upper limit value by the control device for an internal combustion engine according to the embodiment. [Figure 4] FIG. 4 is a flowchart illustrating the flow of a series of processes related to the control of the injector by the control device for the internal combustion engine according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, a control device 40 for an internal combustion engine 30 according to an embodiment will be described with reference to FIGS. <Vehicle fuel injection system> A control device 40 for an internal combustion engine 30 according to an embodiment is mounted on a vehicle and constitutes a fuel injection system for the vehicle. The control device 40 includes a processing circuit 41. The processing circuit 41 executes various processes for controlling the internal combustion engine 30. As shown in FIG. 1 , the fuel injection system for the vehicle includes, in order from the fuel tank 10 side, a tank shutoff valve 11, a pressure reducing valve 14, a relief valve 20, a delivery shutoff valve 21, and the internal combustion engine 30 in a fuel supply line. The internal combustion engine 30 includes a delivery pipe 31, an injector 34, and an output shaft 35.

[0009] The fuel tank 10 is a container for storing hydrogen used when the vehicle operates under high pressure. The tank shutoff valve 11 is a valve that controls the flow of hydrogen from the fuel tank 10. When the vehicle starts operating, the tank shutoff valve 11 opens and hydrogen is pumped out of the fuel tank 10.

[0010] The hydrogen supplied from the fuel tank 10 is under very high pressure, and the pressure reducing valve 14 is a valve for reducing this high pressure to an appropriate level. By reducing the pressure of the hydrogen from the fuel tank 10, the pressure reducing valve 14 adjusts the pressure to a level suitable for fuel injection from the injector 34. A tank pressure sensor 12 that monitors the pressure of hydrogen in the fuel tank 10 is attached to the fuel supply line in a section between the tank shutoff valve 11 and the pressure reducing valve 14. A tank temperature sensor 13 that monitors the temperature of the hydrogen in the fuel tank 10 is also attached to the fuel supply line in a section between the tank shutoff valve 11 and the pressure reducing valve 14.

[0011] The relief valve 20 remains closed during normal operation, but opens to relieve excess pressure in the fuel injection lines if the pressure becomes abnormally high, thus ensuring that the pressure in the fuel injection system remains within a safe range.

[0012] The delivery shutoff valve 21 cuts off the supply of hydrogen when the engine is stopped. On the other hand, when the engine starts, the delivery shutoff valve 21 opens to supply hydrogen to the delivery pipe 31. The delivery shutoff valve 21 also cuts off the supply of hydrogen in an emergency. The delivery pipe 31 is a passage for transporting hydrogen to the injector 34. A delivery pressure sensor 32 that monitors the pressure of hydrogen inside the delivery pipe 31 and a delivery temperature sensor 33 that monitors the temperature of hydrogen inside the delivery pipe 31 are attached to the delivery pipe 31.

[0013] The injector 34 opens and closes depending on the operating state of the internal combustion engine 30 to supply hydrogen into the combustion chamber. The internal combustion engine 30 generates power by mixing hydrogen and air and burning them. When hydrogen is supplied from the injector 34, the combustion process in the internal combustion engine 30 begins. The energy generated by this combustion becomes the rotational force of the output shaft 35, which drives the vehicle. The engine rotation speed sensor 36 measures the engine rotation speed. The engine rotation speed is the rotational speed of the output shaft 35. The engine rotation speed is used to control the output of the internal combustion engine 30 and adjust the amount of fuel supplied.

[0014] The control device 40 of the internal combustion engine 30 processes information from each sensor from the fuel tank 10 to the injector 34, and controls the optimization of hydrogen supply, the operation adjustment of the internal combustion engine 30, the activation of safety functions, etc. In this way, the process of hydrogen being supplied from the fuel tank 10 to the combustion chamber via the injector 34 and used to power the vehicle is completed.

[0015] <Process for determining the fuel injection period of the injector 34 of the internal combustion engine 30> 2 shows a process in which the processing circuit 41 of the control device 40 determines the fuel injection period of the injector 34 of the internal combustion engine 30. As shown in FIG. 2, the processing circuit 41 calculates the amount of torque that the internal combustion engine 30 is required to generate using the accelerator opening, vehicle speed, and gear position. This calculation determines the "required torque." The required torque is the torque that the internal combustion engine 30 should generate depending on the current driving conditions of the vehicle, such as the accelerator opening, vehicle speed, and gear position.

[0016] Next, the processing circuit 41 calculates a required injection amount, which is the amount of fuel to be injected from the injector 34, based on the required torque calculated as described above. The required injection amount is the amount of fuel injected in one cycle of one cylinder required to achieve the required torque. After calculating the required injection amount, the processing circuit 41 determines a fuel injection period corresponding to the required injection amount using the calculated required injection amount, the fuel pressure in the delivery pipe 31, the fuel temperature, and the engine rotation speed. The fuel injection period is determined by the valve opening and closing timings of the injector 34. By determining the valve opening and closing timings of the injector 34, the processing circuit 41 determines the timing at which fuel injection is performed and the fuel injection period, which is the duration of fuel injection.

[0017] In this way, the processing circuit 41 controls the operation of the injector 34 using information from multiple sensors, such as the delivery pressure sensor 32, the delivery temperature sensor 33, and the engine rotation speed sensor 36. Furthermore, the processing circuit 41 also uses information from the tank pressure sensor 12 and the tank temperature sensor 13 to finely control the operation of the injector 34. Control of the injector 34 using information from the tank pressure sensor 12 will be described later.

[0018] The control device 40 for the internal combustion engine 30 realizes optimal fuel supply according to the driving conditions of the vehicle. As described above, the process begins with calculating the required torque, and ultimately determines the injection timing and fuel injection period of the injector 34. By operating the injector 34 to achieve the determined injection timing and fuel injection period, the internal combustion engine 30 generates torque that matches the required torque.

[0019] Furthermore, the control device 40 of the internal combustion engine 30 sets an upper torque limit value and generates torque within a range that does not exceed the upper torque limit value. <Process for determining upper torque limit value by the control device 40 of the internal combustion engine 30> 3 shows a process for determining the torque upper limit value by the control device 40 of the internal combustion engine 30. This process is executed by the processing circuit 41 of the control device 40.

[0020] As shown in FIG. 3 , first, processing circuit 41 calculates a flow rate upper limit value using the fuel pressure in fuel tank 10 detected by tank pressure sensor 12 and the fuel pressure in delivery pipe 31 detected by delivery pressure sensor 32. Control device 40 stores a flow rate upper limit value calculation map designed to output a flow rate upper limit value by inputting the pressure in fuel tank 10 and the pressure in delivery pipe 31. The flow rate upper limit value calculation map is a calculation map that stores flow rate upper limit values ​​corresponding to combinations of the fuel pressure in fuel tank 10 and the fuel pressure in delivery pipe 31. The flow rate upper limit value calculation map is designed based on the results of experiments or simulations performed at the design stage so that the lower the fuel pressure in fuel tank 10 is, the smaller the output flow rate upper limit value will be.

[0021] Next, the processing circuit 41 calculates the injection amount upper limit value using the calculated flow rate upper limit value and engine rotation speed. The control device 40 stores an injection amount upper limit value calculation map designed to be able to output the injection amount upper limit value by inputting the flow rate upper limit value and the engine rotation speed. The injection amount upper limit value is the maximum amount of fuel that can be injected from the injector 34, estimated from the flow rate upper limit value and the engine rotation speed. The injection amount upper limit value calculation map is designed based on the results of experiments or simulations performed at the design stage so that the smaller the flow rate upper limit value, the smaller the injection amount upper limit value, and so that the higher the engine rotation speed, the smaller the injection amount upper limit value.

[0022] The processing circuit 41 then calculates the torque upper limit value using the calculated injection quantity upper limit value and engine rotation speed. The control device 40 stores a torque upper limit value calculation map designed to be able to output the torque upper limit value by inputting the injection quantity upper limit value and the engine rotation speed. The torque upper limit value is the maximum torque that the engine can generate, estimated from the injection quantity upper limit value and the engine rotation speed. The torque upper limit value calculation map is designed based on the results of experiments or simulations performed at the design stage so that the torque upper limit value decreases as the injection quantity upper limit value decreases and so that the torque upper limit value decreases as the engine rotation speed increases.

[0023] <Control of the injector 34 by the control device 40> The control of the injector 34 by the control device 40 will be described below with reference to Fig. 4. The processing circuit 41 executes the series of processes shown in Fig. 4 every time the required torque is calculated in the process described with reference to Fig. 2.

[0024] First, in step S100, the processing circuit 41 determines whether the fuel pressure in the fuel tank 10 is equal to or greater than a predetermined value. The predetermined value is, for example, the lower limit of the range of pressure that can be adjusted by the pressure reducing valve 14. In this case, the predetermined value is set to determine that the remaining amount of fuel in the fuel tank 10 has become low and the pressure downstream of the pressure reducing valve 14 can no longer be maintained by the pressure reducing valve 14. The magnitude of the predetermined value is set so that it can be determined that the pressure downstream of the pressure reducing valve 14 can no longer be maintained based on the fact that the fuel pressure in the fuel tank 10 is below the predetermined value.

[0025] If the processing circuit 41 determines in step S100 that the fuel pressure in the fuel tank 10 is equal to or greater than a predetermined value (step S100: YES), the processing circuit 41 proceeds to step S110. In step S110, the processing circuit 41 calculates the fuel injection period of the injector 34 of the internal combustion engine 30 according to the process described with reference to FIG. 2 so as to inject an amount of fuel necessary to generate torque corresponding to the required torque. Then, in step S120, the processing circuit 41 controls the injector 34 so as to realize the fuel injection period calculated in step S110. After controlling the injector 34 in this manner, the processing circuit 41 temporarily ends this series of processes.

[0026] On the other hand, if the processing circuit 41 determines in step S100 that the fuel pressure in the fuel tank 10 is lower than the predetermined value (step S100: NO), the processing circuit 41 proceeds to step S130. In step S130, the processing circuit 41 calculates a torque upper limit value using the fuel pressure in the fuel tank 10 and the fuel pressure in the delivery pipe 31 according to the process described with reference to Fig. 3. Then, the processing circuit 41 proceeds to step S140, where it compares the required torque with the torque upper limit value calculated in step S130.

[0027] If the processing circuit 41 determines in step S140 that the required torque is equal to or less than the torque upper limit value (step S140: YES), the processing circuit 41 proceeds to step S110 and calculates the fuel injection period of the injector 34 of the internal combustion engine 30 according to the process described with reference to Fig. 2 so as to inject an amount of fuel necessary to generate torque corresponding to the required torque. Then, in step S120, the processing circuit 41 controls the injector 34 so as to realize the fuel injection period calculated in step S110. After controlling the injector 34 in this manner, the processing circuit 41 temporarily ends this series of processes.

[0028] On the other hand, if the processing circuit 41 determines in step S140 that the required torque is greater than the torque upper limit value (step S140: NO), the processing circuit 41 proceeds to step S150. In step S150, the processing circuit 41 calculates the fuel injection period of the injector 34 of the internal combustion engine 30 so as to inject an amount of fuel necessary to generate torque corresponding to the torque upper limit value. At this time, the processing circuit 41 changes the required torque to the torque upper limit value and calculates the fuel injection period of the injector 34 in the process described with reference to FIG. 2. Then, the processing circuit 41 proceeds to step S120 and controls the injector 34 so as to realize the fuel injection period calculated in step S150. After controlling the injector 34 in this manner, the processing circuit 41 temporarily ends this series of processes.

[0029] <Operation of this embodiment> The control device 40 of the internal combustion engine 30 includes a processing circuit 41. The processing circuit 41 calculates a torque upper limit value so that the torque upper limit value decreases as the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 that detects the fuel pressure in the fuel tank 10 decreases. The processing circuit 41 compares the required torque with the torque upper limit value, and if the required torque is equal to or less than the torque upper limit value (step S140: YES), the processing circuit 41 sets the fuel injection period of the injector 34 of the internal combustion engine 30 so as to inject an amount of fuel necessary to generate torque corresponding to the required torque (step S110). On the other hand, if the required torque is greater than the torque upper limit value (step S110: NO), the processing circuit 41 sets the fuel injection period of the injector 34 of the internal combustion engine 30 so as to inject an amount of fuel necessary to generate torque corresponding to the torque upper limit value (step S150). The processing circuit 41 controls the injector 34 based on the fuel injection period set by the processing of step S110 or step S150 (step S120).

[0030] The fuel injection period set according to the torque upper limit value is shorter than the fuel injection period set according to the required torque. Therefore, in a situation where abnormal combustion occurs when the fuel injection period is set according to the required torque due to low fuel pressure in the fuel tank 10, the fuel injection period is set to be shorter than the fuel injection period set according to the required torque.

[0031] <Effects of this embodiment> (1) The control device 40 of the internal combustion engine 30 can prevent the fuel injection period from becoming excessively long, thereby suppressing abnormal combustion.

[0032] (2) In the control device 40 of the internal combustion engine 30, the processing circuit 41 uses the engine rotation speed in addition to the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 to calculate the torque upper limit value so that the torque upper limit value becomes smaller as the engine rotation speed increases.

[0033] The higher the engine rotation speed, the shorter the fuel injection period suitable for forming an ideal air-fuel mixture. The control device 40 of the internal combustion engine 30 calculates the torque upper limit value using the engine rotation speed in addition to the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12. In this way, by taking the engine rotation speed into account when calculating the torque upper limit value, the control device 40 of the internal combustion engine 30 can accurately calculate the torque upper limit value even when the engine rotation speed changes.

[0034] This allows the control device 40 of the internal combustion engine 30 to limit the required torque to an upper torque limit value according to the driving conditions of the vehicle, thereby enabling more appropriate control of the fuel injection period of the injector .

[0035] (3) In the control device 40 of the internal combustion engine 30, the processing circuit 41 uses the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 as well as the fuel pressure in the delivery pipe 31 detected by the delivery pressure sensor 32, which detects the fuel pressure in the delivery pipe 31 that supplies fuel from the fuel tank 10 to the injector 34, to calculate a torque upper limit value that becomes smaller as the fuel pressure in the delivery pipe 31 becomes lower.

[0036] Fluctuations in the fuel pressure in the delivery pipe 31 change the amount of fuel injected from the injector 34. Because the fuel pressure in the delivery pipe 31 is taken into account in the torque upper limit value, the control device 40 of the internal combustion engine 30 described above can correctly calculate the torque upper limit value even when the fuel pressure in the delivery pipe 31 changes.

[0037] This allows the control device 40 of the internal combustion engine 30 to calculate an appropriate torque upper limit value that reflects the fuel pressure in the fuel tank 10 and the fuel pressure in the delivery pipe 31, and control the fuel injection period of the injector 34.

[0038] (4) In the control device 40 of the internal combustion engine 30, the processing circuit 41 calculates a flow rate upper limit, which is the maximum value of the flow rate of fuel flowing to the injector 34 in one cycle, using the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 and the fuel pressure in the delivery pipe 31 detected by the delivery pressure sensor 32, which detects the fuel pressure in the delivery pipe 31 that supplies fuel from the fuel tank 10 to the injector 34. The processing circuit 41 calculates an injection amount upper limit, which is the maximum value of the amount of fuel that can be injected from the injector 34 in one cycle, using the calculated flow rate upper limit and the engine rotation speed. The processing circuit 41 calculates a torque upper limit, which is the maximum value of the amount of fuel that can be injected from the injector 34 in one cycle, using the calculated injection amount upper limit and the engine rotation speed.

[0039] When the fuel pressure in the fuel tank 10 and the fuel pressure in the delivery pipe 31 decrease, the upper flow rate limit, which is the maximum flow rate of fuel that can be supplied to the injector 34, decreases. If the upper flow rate limit is small, the upper injection amount limit, which is the maximum amount of fuel that can be injected from the injector 34 in one cycle, also decreases accordingly.

[0040] The control device 40 of the internal combustion engine 30 calculates the flow rate upper limit value and the injection amount upper limit value using the fuel pressure in the fuel tank 10, the fuel pressure in the delivery pipe 31, and the engine rotation speed. After estimating the injection amount upper limit value according to the fuel pressure in the fuel tank 10 in this way, the control device 40 of the internal combustion engine 30 calculates the torque upper limit value using the engine rotation speed.

[0041] This allows the control device 40 of the internal combustion engine 30 to calculate the torque upper limit value taking into account the fuel pressure in the fuel tank 10 and the current operating state of the internal combustion engine 30. (5) In the control device 40 of the internal combustion engine 30, when the fuel pressure in the fuel tank 10 is equal to or higher than a predetermined value, the processing circuit 41 does not calculate the torque upper limit value, but sets the fuel injection period of the injector 34 so as to inject the amount of fuel necessary to generate torque corresponding to the required torque.

[0042] If the fuel pressure in the fuel tank 10 is sufficiently high, the injector 34 can inject the required amount of fuel even if the fuel injection period is short. Therefore, if the fuel pressure in the fuel tank 10 is sufficiently high, the control device 40 of the internal combustion engine 30 does not need to limit the required torque by the torque upper limit value. If the fuel pressure in the fuel tank 10 is equal to or higher than a predetermined value, the control device 40 of the internal combustion engine 30 does not calculate the torque upper limit value and sets the fuel injection period according to the required torque.

[0043] This allows the control device 40 of the internal combustion engine 30 to suppress limiting the required torque by the torque upper limit value more than necessary. <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0044] In the embodiment, the fuel injection line of the vehicle fuel injection system is provided with the delivery pipe 31, but this is not necessarily provided, and the pressure reducing valve 14 and delivery pipe 31 may be omitted. In this case, the control device 40 of the internal combustion engine 30 uses only the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 to calculate a torque upper limit value that decreases as the fuel pressure in the fuel tank 10 decreases. In this case, the processing circuit 41 determines the fuel injection period corresponding to the required injection amount using the required injection amount, the fuel pressure in the fuel tank 10, the fuel temperature, and the engine rotation speed.

[0045] The control device 40 for the internal combustion engine 30 according to the embodiment is configured to use the engine rotation speed to calculate the torque upper limit value so that the higher the engine rotation speed, the smaller the torque upper limit value. However, the control device 40 for the internal combustion engine 30 described above can calculate the torque upper limit value using the fuel pressure in the fuel tank 10 detected by the tank pressure sensor 12 and the fuel pressure in the delivery pipe 31 detected by the delivery pressure sensor 32, without using the engine rotation speed. [Explanation of symbols]

[0046] 10...Fuel tank 11...Tank shutoff valve 12...Tank pressure sensor 13...Tank temperature sensor 14...Reducing valve 20...Relief valve 21...Delivery shutoff valve 30...Internal combustion engine 31...Delivery pipe 32...Delivery pressure sensor 33...Delivery temperature sensor 34...Injector 35...Output shaft 36...Engine rotation speed sensor 40...Control device 41...Processing circuit

Claims

1. A control device for an internal combustion engine that is mounted on a vehicle and controls an internal combustion engine that supplies hydrogen as fuel using fuel pressure, a processing circuit; the processing circuit calculates a torque upper limit value so that the torque upper limit value decreases as the fuel pressure in the fuel tank detected by a tank pressure sensor that detects the fuel pressure in the fuel tank decreases; the processing circuit compares the required torque with the torque upper limit value, and if the required torque is equal to or less than the torque upper limit value, sets a fuel injection period of an injector of the internal combustion engine so as to inject hydrogen, which is a fuel in an amount necessary to generate torque equivalent to the required torque, while if the required torque is greater than the torque upper limit value, sets a fuel injection period of the injector of the internal combustion engine so as to inject hydrogen, which is a fuel in an amount necessary to generate torque equivalent to the torque upper limit value; The injector of the internal combustion engine is controlled based on the fuel injection period set by the processing circuit. Control device for internal combustion engines.

2. the processing circuitry The torque upper limit value is calculated using an engine rotation speed in addition to the fuel pressure in the fuel tank detected by the tank pressure sensor, so that the torque upper limit value decreases as the engine rotation speed increases. The control device for an internal combustion engine according to claim 1.

3. the processing circuitry The torque upper limit value is calculated so as to be smaller as the fuel pressure in the delivery pipe is lower, using not only the fuel pressure in the fuel tank detected by the tank pressure sensor but also the fuel pressure in the delivery pipe detected by a delivery pressure sensor that detects the fuel pressure in the delivery pipe that supplies hydrogen fuel from the fuel tank to the injector. The control device for an internal combustion engine according to claim 2.

4. the processing circuitry calculating a flow rate upper limit value, which is a maximum value of the flow rate of hydrogen as fuel flowing to the injector in one cycle, using the fuel pressure in the fuel tank detected by the tank pressure sensor and the fuel pressure in the delivery pipe detected by a delivery pressure sensor that detects the fuel pressure in the delivery pipe that supplies hydrogen as fuel from the fuel tank to the injector; calculating an injection amount upper limit value, which is a maximum amount of hydrogen as fuel that can be injected from the injector in one cycle, using the calculated flow rate upper limit value and the engine rotation speed; The torque upper limit value is calculated using the calculated injection amount upper limit value and the engine rotation speed. The control device for an internal combustion engine according to claim 3.

5. the processing circuitry When the fuel pressure in the fuel tank is equal to or higher than a predetermined value, the torque upper limit value is not calculated, and the fuel injection period of the injector is set so as to inject hydrogen, which is a fuel in an amount necessary to generate torque corresponding to the required torque. The control device for an internal combustion engine according to claim 1.

Images