JP5515792B2 - Internal combustion engine control device - Google Patents

Description

  The present invention relates to an internal combustion engine control device that controls an internal combustion engine of a vehicle.

  2. Description of the Related Art Conventionally, as a device for performing arithmetic processing related to control of an internal combustion engine or the like, a processor that executes processing according to an operating frequency is provided, and power consumption can be reduced by changing the operating frequency according to the processing load of the processor. What is intended is known (see Patent Document 1).

JP 2008-198072 A

  However, in the above-described conventional apparatus, it takes time until the processing load after the change after the processing load of the processor fluctuates, and the control delay of the processor may occur. When the control delay occurs, the responsiveness of the processor is deteriorated, so that the reliability related to the control of the processor is lowered.

  Therefore, the present invention provides an internal combustion engine control device that can improve the reliability of control of an internal combustion engine by changing the clock frequency based on the amount of time change in the throttle opening of the internal combustion engine. With the goal.

  In order to solve the above-described problems, the present invention provides an internal combustion engine control apparatus that controls an internal combustion engine, and includes a calculation unit that performs calculation processing related to control of the internal combustion engine according to a clock frequency, and a throttle valve opening of the internal combustion engine. And a clock frequency changing means for changing the clock frequency based on the amount of time change detected by the throttle valve detecting means.

  According to the internal combustion engine control device of the present invention, the processing performance of the computing means can be appropriately controlled according to the processing situation by changing the clock frequency based on the amount of time change in the throttle opening of the internal combustion engine. As a result, the processing load on the computing means can be reduced. Furthermore, according to this internal combustion engine control device, the clock frequency is changed based on the detected amount of change in the throttle opening over time, so that the clock frequency is changed based on the processing load of the arithmetic means as in the prior art. In comparison, the time required for calculating the processing load can be saved, and the responsiveness can be improved. Therefore, in this internal combustion engine control apparatus, it is possible to avoid the occurrence of a control delay or the like by improving the responsiveness, so that the reliability related to the control of the internal combustion engine can be improved.

In addition, the present invention is an internal combustion engine control device that controls an internal combustion engine, wherein the calculation means performs arithmetic processing related to the control of the internal combustion engine according to a clock frequency, and an operation that stores operation data of a vehicle including the internal combustion engine. Based on the driving data stored in the data storage means, the driving data storage means, the acceleration timing prediction means for predicting the vehicle acceleration timing and the acceleration of the vehicle at the acceleration timing, and the acceleration timing and acceleration predicted by the acceleration timing prediction means And a throttle valve predicting means for predicting a time change amount of the throttle valve opening based on the clock frequency changing means to start changing the clock frequency based on the time change amount predicted by the throttle valve predicting means. At the same time, based on the amount of time change predicted by the throttle valve prediction means, It is preferable to change the clock frequency.

  According to such a configuration, since the change in the clock frequency is started based on the predicted amount of change in the throttle opening over time, preparations required for the change in clock frequency after the change in the amount of time change in the throttle opening is made. It is possible to avoid a control delay due to time or the like, and to change the clock frequency at an appropriate timing. Therefore, according to this internal combustion engine control device, the clock frequency can be changed at an appropriate timing, so that the reliability related to the control of the internal combustion engine can be improved.

In the internal combustion engine control apparatus according to the present invention , the throttle valve detection means for detecting the time change amount of the throttle valve opening of the internal combustion engine, and the time change amount of the throttle valve opening detected by the throttle valve detection means. Te, and allocation determining means for determining the allocation of operation to the plurality of CPU cores included in the calculation means, and further comprising a.

  According to the internal combustion engine control apparatus of the present invention, MBT [Minimum spark advance for Best Torque] performed in response to the throttle opening based on the time change of the throttle opening detected by the throttle opening change detecting means. ] By preferentially assigning arithmetic processing related to important controls such as ignition timing control and EGR [Exhaust Gas Recirculation] limit control, control delays can be avoided in these controls. Such reliability can be improved.

In the internal combustion engine controller according to the present invention, based on the amount of time change predicted by the throttle valve predicting means, determination of assignment of arithmetic processing for a plurality of CPU cores of the arithmetic means is started , and the throttle valve predicting means It is preferable to further include an assignment determination unit that determines assignment of arithmetic processing to a plurality of CPU cores based on the predicted time change amount .

  According to such a configuration, since the determination of the allocation of the arithmetic processing for the plurality of cores is started based on the predicted amount of change in the throttle opening over time, the assignment is not changed after the amount of change in the throttle opening over time has changed. It is possible to avoid a control delay due to the preparation time required until the determination, and to appropriately determine the allocation. Therefore, according to this internal combustion engine control apparatus, it is possible to avoid the occurrence of a control delay and to appropriately determine the assignment of arithmetic processing to a plurality of cores, thereby improving the reliability related to the control of the internal combustion engine. be able to.

  According to the present invention, it is possible to improve the reliability related to the control of the internal combustion engine.

1 is a block diagram showing a first embodiment of an internal combustion engine control device according to the present invention. FIG. It is a flowchart which shows the process of the internal combustion engine control apparatus which concerns on 1st Embodiment. It is a block diagram which shows 2nd Embodiment of the internal combustion engine control apparatus which concerns on this invention. It is a flowchart which shows the process of the internal combustion engine control apparatus which concerns on 2nd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

[First Embodiment]
The internal combustion engine control apparatus 1 according to the first embodiment is an apparatus that is provided in a vehicle and controls the engine of the vehicle in accordance with a rotation angle of a crankshaft, an internal pressure of a cylinder, an opening of a throttle valve, and the like.

  As shown in FIG. 1, the internal combustion engine control device 1 includes an engine control ECU [Electronic Control Unit] 2. The engine control ECU 2 is an electronic control unit that performs control processing for the entire internal combustion engine control device 1. The engine control ECU 2 performs various controls such as MBT [Minimum spark advance for Best Torque] ignition timing control, EGR [Exhaust Gas Recirculation] limit control, and VVT [Variable Valve Timing] control according to the throttle valve opening of the engine. Run.

  An in-cylinder pressure sensor 3, a crank angle sensor 4, and a throttle sensor 5 are connected to the engine control ECU 2. The in-cylinder pressure sensor 3 is a sensor that detects the pressure in the cylinder of the engine, and any type of sensor that can detect the pressure in the cylinder may be used. The in-cylinder pressure signal of the in-cylinder pressure sensor 3 is input to the engine control ECU 2, and the detection value is sampled at the set detection timing.

  The crank angle sensor 4 is a sensor that detects the rotation state of the crankshaft of the engine. The crank angle signal output from the crank angle sensor 4 is output as a one-cycle pulse signal at an angle of 10 CA, for example, and input to the engine control ECU 2. The throttle sensor 5 is a sensor that detects the opening degree of the electronically controlled throttle valve. A throttle valve opening signal output from the throttle sensor 5 is input to the engine control ECU 2.

  The engine control ECU 2 includes an ADC [Analog to Digital Converter] 11, a first CPU [Central Processing Unit] core 12, a first peripheral IO [Input Output] 13, a second CPU core 14, a second peripheral IO 15, A ROM [Read Only Memory] 16 and a RAM [Read Only Memory] 17 are provided. The engine control ECU 2 executes programs (arithmetic processing) related to various controls using the two cores of the first CPU core 12 and the second CPU core 14. The engine control ECU 2 assigns a program to each of the cores 12 and 14 using SMP [Symmetric Multi Processing]. The first CPU core 12 and the second CPU core 14 function as arithmetic means described in the claims.

  The ADC 11 is a circuit that converts analog signals output from the in-cylinder pressure sensor 3 and the crank angle sensor 4 into digital signals. The ADC 11 converts the in-cylinder pressure signal and the crank angle signal output from the in-cylinder pressure sensor 3 and the crank angle sensor 4 into digital signals and inputs the digital signals to the second CPU core 14.

  The first CPU core 12 is a processor core that operates various programs related to engine control. The first CPU core 12 operates a program using a specific clock frequency. Specifically, the first CPU core 12 performs MBT in addition to normal engine control as a base based on the in-cylinder pressure signal of the in-cylinder pressure sensor 3 and the crank angle signal of the crank angle sensor 4 which are converted into digital signals. Various control programs such as ignition timing control, EGR limit control, and VVT control are operated. A first peripheral IO 13 such as a timer is connected to the first CPU core 12. The first peripheral IO 13 is synchronized with a frequency obtained by multiplying the clock frequency used in the second CPU core 14.

  Similar to the first CPU core 12, the second CPU core 14 is a processor core that operates various programs related to engine control. The second CPU core 14 is connected to the first CPU core 12 by a CPU bus 18. The second CPU core 14 operates the program using a specific clock frequency. A second peripheral IO 15 such as a timer is connected to the second CPU core 14. The second peripheral IO 15 is synchronized with a frequency obtained by multiplying the clock frequency used in the second CPU core 14.

  A ROM 16 and a RAM 17 are connected to a CPU bus 18 that connects the first CPU core 12 and the second CPU core 14. The engine control ECU 2 controls the engine by loading various programs stored in the ROM 16 into the RAM 17 and executing them by the first CPU core 12 or the second CPU core 14.

  The first CPU core 12 includes a throttle valve time variation calculation unit 21, a first clock frequency calculation unit 22, and a first clock setting register 23.

  The throttle valve time change amount calculation unit 21 calculates the time change amount of the throttle valve opening of the engine based on the throttle valve opening signal of the throttle sensor 5. The time change amount of the throttle valve opening is the change amount per predetermined time of the throttle valve opening. The throttle valve time variation calculation unit 21 functions as a throttle valve detection unit described in the claims.

  The first clock frequency calculation unit 22 is based on the time change amount of the throttle valve opening calculated by the throttle valve time change amount calculation unit 21, and the optimum clock frequency for the first CPU core 12 to operate the program. Is calculated. The clock frequency is calculated as a higher value as the time change amount of the throttle valve opening is larger. Specifically, when the amount of time change in the throttle valve opening is within a predetermined value in which none of the MBT ignition timing control, EGR limit control, and VVT control is executed, the minimum clock frequency is set to the minimum value. Calculate as the optimal value. On the other hand, when the amount of time change of the throttle valve opening is in a range equal to or greater than a predetermined value in which MBT ignition timing control, EGR limit control, and VVT control are all executed, the maximum value of the clock frequency is set to an optimum value. Calculate as In addition, when the amount of time change in the throttle valve opening is within the range where only MBT ignition timing control, EGR limit control, or VVT control is executed, the value corresponding to the control program being executed is optimal. Calculate as a correct value.

  The first clock setting register 23 stores the clock frequency calculated by the first clock frequency calculation unit 22 as the clock frequency of the new first CPU core 12. The clock frequency of the first CPU core 12 is changed by adjusting the first peripheral IO 13 that uses the clock frequency and writing a new clock frequency in the first clock setting register 23. The first clock setting register 23 and the first clock frequency calculation unit 22 function as clock frequency changing means described in the claims.

  The second CPU core 14 includes a program allocation determination unit 24, a second clock frequency calculation unit 25, and a second clock setting register 26.

  The program allocation determination unit 24 determines dynamic program allocation to the cores 12 and 14 based on SMP. The program allocation determination unit 24 determines program allocation based on the amount of time change of the throttle valve opening output from the throttle valve time change amount calculation unit 21. Specifically, the program allocation determination unit 24 allocates a base engine control and MBT ignition timing control program to the first CPU core 12 when the time change amount of the throttle valve opening is equal to or less than a predetermined threshold value, It is determined that programs for EGR limit control and VVT control are allocated to the second CPU core 14. The program assignment determination unit 24 functions as assignment determination means described in the claims.

  The second clock frequency calculation unit 25 calculates the clock frequency of the second CPU core 14 based on the time change amount of the throttle valve opening calculated by the throttle valve time change amount calculation unit 21. The second clock frequency calculation unit 25 calculates the clock frequency of the second CPU core 14 by the same processing as the first clock frequency calculation unit 22.

  The second clock setting register 26 stores the clock frequency calculated by the second clock frequency calculation unit 25 as the clock frequency of the new second CPU core 14. The clock frequency of the second CPU core 14 is changed by adjusting the second peripheral IO 15 that uses the clock frequency and writing a new clock frequency in the second clock setting register 26. The second clock setting register 26 and the second clock frequency calculation unit 25 function as clock frequency changing means described in the claims.

  Next, processing executed by the engine control ECU 2 of the internal combustion engine control apparatus 1 according to the first embodiment will be described with reference to the drawings.

  As shown in FIG. 2, first, signals are input from the in-cylinder pressure sensor 3, the crank angle sensor 4, and the throttle sensor 5 to the engine control ECU 2 (S1). The in-cylinder pressure signal and the crank angle signal output from the in-cylinder pressure sensor 3 and the crank angle sensor 4 are converted into digital signals by the ADC 11 and input to the second CPU core 14. The throttle valve opening signal of the throttle sensor 5 is input to the throttle valve time variation calculation unit 21 of the first CPU core 12.

  Next, the throttle valve time variation calculation unit 21 of the first CPU core 12 performs a calculation process of the time variation of the throttle valve opening based on the throttle valve opening signal of the throttle sensor 5 (S2).

  In S3, the first clock frequency calculation unit 22 and the second clock frequency calculation unit 25 perform calculation processing of the clock frequency used in the cores 12 and 14 based on the calculated time variation of the throttle valve opening. Do. Further, the program allocation determination unit 24 determines whether the program allocation is required due to the start of MBT ignition timing control or the like based on the time variation of the throttle valve opening output from the throttle valve time variation calculation unit 21. , 14 to determine the program assignment.

  Thereafter, the clock frequency calculated by the first clock frequency calculation unit 22 is written into the first clock setting register 23, whereby the clock frequency setting processing of the first CPU core 12 is performed, and the second clock frequency is set. The clock frequency calculated by the calculation unit 25 is written into the second clock setting register 26, whereby the clock frequency setting process of the second CPU core 14 is performed (S4).

  According to the internal combustion engine control apparatus 1 according to the first embodiment described above, the clock frequency is changed based on the amount of time change in the throttle opening of the internal combustion engine, so that the cores 12 and 14 are changed according to the processing status. Since the processing performance can be appropriately controlled, the processing load on the cores 12 and 14 can be reduced. Furthermore, according to this internal combustion engine control device 1, the clock frequency is changed based on the processing load of the current cores 12 and 14 as in the prior art by changing the clock frequency based on the detected amount of change in the throttle opening over time. Compared with the case of changing the process time, it is possible to save time for calculating the processing load and to improve the responsiveness. Therefore, in this internal combustion engine control apparatus 1, since it is possible to suppress the occurrence of a control delay or the like by improving the responsiveness, it is possible to improve the reliability related to the control of the internal combustion engine.

Further, according to the internal combustion engine control device 1, priority is given to programs relating to important controls such as MBT ignition timing control and EGR limit control performed in accordance with the throttle opening, based on the time change amount of the throttle opening. Since it is possible to avoid the occurrence of control delay in these controls, it is possible to improve the reliability related to the control of the internal combustion engine.
Furthermore, by determining the program allocation based on the detected amount of change in the throttle opening over time, it is necessary to calculate the processing load as compared with the case where the allocation is determined based on the current processing load of the cores 12 and 14. Time can be saved, and responsiveness related to the allocation determination process can be improved.

[Second Embodiment]
The internal combustion engine control apparatus 10 according to the second embodiment is different from the internal combustion engine control apparatus 1 according to the first embodiment in the functions of the first CPU core 40 and the second CPU core 41 and the throttle sensor 5. It is different in that the vehicle sensor 6 and the acceleration / deceleration prediction ECU 30 are provided instead.

  The vehicle sensor 6 detects a vehicle state such as a vehicle speed, acceleration, yaw rate, steering angle, slip angle, and opening angle of an engine slot valve. Specifically, the vehicle sensor 6 includes various sensors such as a vehicle speed sensor and a throttle sensor. The vehicle state signal output from the vehicle sensor 6 is input to the acceleration / deceleration prediction ECU 30, and the detection value is sampled at the set detection timing.

  The acceleration / deceleration prediction ECU 30 includes an acceleration / deceleration prediction CPU 31 and an operation data storage unit 32. The acceleration / deceleration prediction CPU 31 performs arithmetic processing related to vehicle acceleration / deceleration prediction. The driving data storage unit 32 stores a vehicle state history as driving data based on the vehicle state signal input from the vehicle sensor 6. The operation data storage unit 32 includes a RAM and a ROM. The operation data storage unit 32 functions as operation data storage means described in the claims.

  The acceleration / deceleration prediction unit 33 in the acceleration / deceleration prediction CPU 31 is based on the vehicle state signal input from the vehicle sensor 6 and the past operation data stored in the operation data storage unit 32, that is, the acceleration / deceleration timing of the vehicle, that is, the acceleration timing. And the deceleration timing is predicted. The acceleration / deceleration prediction unit 33 calculates a predicted acceleration at the predicted acceleration timing based on the vehicle state signal input from the vehicle sensor 6 and the past driving data stored in the driving data storage unit 32. The acceleration / deceleration prediction unit 33 functions as an acceleration timing prediction unit described in the claims. The acceleration / deceleration prediction ECU 30 inputs to the first CPU core 40 the required time until the acceleration / deceleration timing predicted by the acceleration / deceleration prediction unit 33 and the predicted acceleration at the acceleration timing.

  The first CPU core 40 according to the second embodiment includes a throttle valve time change amount prediction unit 42. The throttle valve time change amount prediction unit 42 predicts the time change amount of the throttle valve opening based on the required time to the acceleration / deceleration timing input from the acceleration / deceleration prediction ECU 30 and the predicted acceleration at the acceleration timing. The throttle valve time change amount prediction unit 42 functions as a throttle valve prediction unit described in the claims.

  In the first clock frequency calculation unit 43 according to the second embodiment, the first CPU core 40 operates the program based on the time change amount of the throttle valve opening predicted by the throttle valve time change prediction unit 42. The optimum clock frequency is calculated.

  Specifically, the first clock frequency calculation unit 43 is already executing MBT ignition timing control, EGR limit control, VVT control, and the like, and within a predetermined time based on the predicted amount of change in the throttle valve opening over time. When it is predicted that each control will be stopped at the same time, a clock frequency having a lower value than the current value is calculated. At this time, the first clock frequency calculation unit 43 performs a preparation time required for changing the clock frequency of the first CPU core 40 after the time change amount of the throttle opening changes, that is, the clock frequency changing process. The clock frequency changing process is started in consideration of such time. The time required for the clock frequency changing process is the time required to store the calculated clock frequency in the clock setting register 23 or the time required to adjust the first peripheral IO 13 that operates using the clock frequency. The first clock frequency calculation unit 43 considers the time required for the clock frequency changing process, and starts the changing process at a time before the time required for the clock frequency changing process from the time when the MBT ignition timing control is stopped. To do. Thereby, the 1st clock frequency calculating part 43 can make the time when MBT ignition timing control etc. stop and the time when a clock frequency is changed the same. The first clock frequency calculation unit 43 functions as the clock frequency changing means described in the claims together with the first clock setting register 23.

  The program allocation determination unit 44 of the second CPU core 41 according to the second embodiment is configured to program the cores 40 and 41 based on the time change amount of the throttle valve opening predicted by the throttle valve time change amount prediction unit 42. The allocation determination process is started. Specifically, the program allocation determination unit 44 determines that MBT ignition timing control, EGR limit control, VVT control, and the like are executed within a predetermined time based on the predicted time change amount of the throttle valve opening. At this time, these control programs are preferentially assigned to the cores 40 and 41 so as to be executed without delay. The program allocation determination unit 44 determines allocation of a base engine control program or the like based on the current processing load status of each of the cores 40 and 41.

  The second clock frequency calculation unit 45 according to the second embodiment calculates the clock frequency of the second CPU core 41 by the same processing as the first clock frequency calculation unit 43. The second clock frequency calculation unit 45 functions as the clock frequency changing means described in the claims together with the second clock setting register 26.

  Next, processing executed by the engine control ECU 20 and the acceleration / deceleration prediction ECU 30 of the internal combustion engine control apparatus 10 according to the second embodiment will be described with reference to the drawings.

  As shown in FIG. 4, first, an in-cylinder pressure signal and a crank angle signal are input from the in-cylinder pressure sensor 3 and the crank angle sensor 4 to the engine control ECU 20, and at the same time from the vehicle sensor 6 to the acceleration / deceleration prediction ECU 30. A vehicle state signal is input (S11). Analog signals output from the in-cylinder pressure sensor 3 and the crank angle sensor 4 are converted into digital signals by the ADC 11 and input to the second CPU core 14.

  Next, the acceleration / deceleration prediction ECU 30 performs a process of predicting the acceleration timing and deceleration timing of the vehicle based on the input vehicle state signal and the operation data stored in the operation data storage unit 32. Further, the acceleration / deceleration prediction unit 33 performs calculation processing of the predicted acceleration at the predicted acceleration timing based on the vehicle state signal input from the vehicle sensor 6 and the past driving data stored in the driving data storage unit 32 ( S12). The acceleration / deceleration prediction ECU 30 outputs the required time until the acceleration / deceleration timing predicted by the acceleration / deceleration prediction unit 33 and the predicted acceleration at the acceleration timing to the first CPU core 40.

  Thereafter, the throttle valve time variation prediction unit 42 of the first CPU core 40 determines the throttle valve opening based on the required time to the acceleration / deceleration timing input from the acceleration / deceleration prediction ECU 30 and the predicted acceleration at the acceleration timing. A time variation prediction process is performed (S13).

  In S14, the first clock frequency calculation unit 43 and the second clock frequency calculation unit 45 perform calculation processing of the clock frequency used by the cores 40 and 41 based on the predicted time variation of the throttle valve opening. Do. Further, the program allocation determination unit 44 starts a program allocation determination process for the cores 40 and 41 at an appropriate timing based on the time variation of the throttle valve opening predicted by the throttle valve time variation prediction unit 42. .

  Thereafter, the clock frequency calculated by the first clock frequency calculation unit 22 is written into the first clock setting register 23, whereby the clock frequency setting processing of the first CPU core 12 is performed, and the second clock frequency is set. The clock frequency calculated by the calculation unit 25 is written into the second clock setting register 26, whereby the clock frequency setting process of the second CPU core 14 is performed (S14).

  According to the internal combustion engine control apparatus 10 according to the second embodiment described above, since the change of the clock frequency is started based on the predicted time change amount of the throttle opening, the change amount of the throttle opening changes. Therefore, it is possible to avoid a control delay due to the preparation time required until the clock frequency is changed, and to change the clock frequency at an appropriate timing. For this reason, according to the internal combustion engine control device 10, it is possible to avoid a situation in which the clock frequency is delayed and changed after various controls are started and the processing load becomes high. The occurrence of control failure can be suppressed. Further, it is possible to avoid a high clock frequency state from continuing even after various controls are completed. Therefore, according to the internal combustion engine control apparatus 10, the clock frequency can be changed at an appropriate timing, so that the reliability related to the control of the internal combustion engine can be improved.

  Further, according to the internal combustion engine control apparatus 10, since the program assignment determination process for the plurality of cores is started based on the predicted time change amount of the throttle opening, the time change amount of the throttle opening changes. Therefore, it is possible to avoid a control delay due to the preparation time required from the start to the determination of the assignment, and the assignment can be determined at an appropriate timing. Therefore, according to this internal combustion engine control device, the clock frequency can be changed at an appropriate timing, so that the reliability related to the control of the internal combustion engine can be improved.

  The present invention is not limited to the embodiment described above. For example, the number of CPU cores included in the engine control ECU 2 is not limited to two, and may be three or more, or only one. When there is one CPU core, there is no need to allocate a program, so there is no need to provide a program allocation determining unit. Further, it is not always necessary to change the clock frequency, and at least one of the change of the clock frequency and the determination of program allocation is performed based on the detected value or predicted value of the time change amount of the throttle valve opening. It ’s fine.

  DESCRIPTION OF SYMBOLS 1,10 ... Internal-combustion-engine control apparatus 2,20 ... Engine control ECU 3 ... In-cylinder pressure sensor 4 ... Crank angle sensor 5 ... Throttle sensor 6 ... Vehicle sensor 12,40 ... 1st CPU core 14,41 ... 2nd CPU Core 21... Throttle valve time variation calculation unit 22, 43... First clock frequency calculation unit 23... First clock setting register 24, 44... Program allocation determination unit 25, 45. Second clock setting register 32 ... Operation data storage unit 33 ... Acceleration / deceleration prediction unit 42 ... Throttle valve time change amount prediction unit

Claims (4)

An internal combustion engine controller for controlling an internal combustion engine,
Arithmetic means for performing arithmetic processing related to control of the internal combustion engine according to a clock frequency;
Throttle valve detection means for detecting the amount of time change of the throttle valve opening of the internal combustion engine;
Clock frequency changing means for changing the clock frequency based on the amount of time change detected by the throttle valve detecting means;
An internal combustion engine control device comprising: An internal combustion engine controller for controlling an internal combustion engine,
Arithmetic means for performing arithmetic processing related to control of the internal combustion engine according to a clock frequency;
Driving data storage means for storing driving data of a vehicle including the internal combustion engine;
Acceleration timing prediction means for predicting the acceleration timing of the vehicle and the acceleration of the vehicle at the acceleration timing based on the driving data stored in the driving data storage means;
Throttle valve predicting means for predicting a time change amount of the throttle valve opening based on the acceleration timing and the acceleration predicted by the acceleration timing predicting means,
The clock frequency changing means starts changing the clock frequency based on the time change amount predicted by the throttle valve prediction means, and based on the time change amount predicted by the throttle valve prediction means, An internal combustion engine control device that changes a clock frequency . On the basis of the detected time variation of the throttle valve opening degree of the throttle valve detecting means, further characterized in that it comprises an allocation determining means for determining the allocation of the operation to a plurality of CPU cores possessed by said calculation means The internal combustion engine control device according to claim 1 . Based on the time change amount predicted by the throttle valve prediction means, determination of the assignment of the arithmetic processing to a plurality of CPU cores of the calculation means is started , and the time change amount predicted by the throttle valve prediction means The internal combustion engine control device according to claim 2 , further comprising: an assignment determination unit that determines assignment of the arithmetic processing to the plurality of CPU cores based on the above .

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