JP2017044072A - Internal combustion engine control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internal combustion engine control device that can determine if a dog position of a dog-type transmission is in a transition state with good determination performance, by a simple configuration.SOLUTION: The internal combustion engine control device 1 includes: a dog-type transmission state determination part 8 for detecting a transition state of the dog-type transmission based on a revolution speed derivation value derived from an engine revolution speed NE and a vehicle speed derivation value derived from a vehicle speed VSP.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an internal combustion engine control device, and in particular, detects a transition state between a driving state and a driven state of a dog transmission mounted on a saddle riding type vehicle, and based on the detection result of the transition state. The present invention relates to an internal combustion engine control device that controls an internal combustion engine.

  Some straddle-type vehicles such as motorcycles include a dog-type transmission. Such a dog-type transmission has a driving state (positive side state) in which the dog on the engine side presses and drives the dog on the driving wheel side according to the driving relationship between the engine and the driving wheel, Driven state in which the dog presses and drives the dog on the engine side (negative side state), and transition state in which the dog on the engine side and the dog on the drive wheel side are separated (drive state and driven state) The dog position in the free state).

  Under such circumstances, Patent Document 1 relates to a shift control device for a motorcycle, detects a shift operation of a dog transmission by a driver based on a detection value of a load sensor, and detects each of a crank angle sensor and a throttle sensor. A configuration is disclosed in which, based on a detected value, an engine is determined to be in a driving state, a driven state, or a boundary state via a dog transmission. In addition, according to Patent Document 1, when the shift operation of the dog type transmission by the driver is detected, the engine is in a driving state, a driven state, or a boundary state. Thus, a configuration for performing engine output control is disclosed.

Japanese Patent No. 5041974

  Here, according to the study of the present inventor, when the dog position of the dog type transmission changes from the transition state between the driving state and the driven state to the driving state, that is, acceleration of the vehicle in which the driving force of the engine increases. Sometimes, a mechanical shock tends to occur in the dog-type transmission when the dog on the engine side contacts the dog on the drive wheel side. For this reason, in such a case, the transition state of the dog position of the dog transmission can be detected, and the output (driving force) of the internal combustion engine based on the detection result of the dog position transition state of the dog transmission. Etc. are preferably controllable.

  However, according to the study of the present inventor, the boundary state disclosed in Patent Document 1 is a region sandwiched between the b line and the c line in FIG. 6 where the orthogonal coordinate axes are defined by the engine speed and the throttle opening. Although technically considered to correspond to a transition state where the dog on the engine side and the dog on the drive wheel side are separated from each other, in practice, the boundary state may be extremely narrow. Therefore, it is considered that there is a strong tendency in practice to detect such a boundary state from the engine speed and the throttle opening.

  In other words, at present, it is a long-awaited situation to realize an internal combustion engine control device having a novel configuration that is easy to detect the transition state of the dog position of the dog type transmission while avoiding the complexity of the device configuration. I can say that.

  The present invention has been made after the above studies, and provides an internal combustion engine control device capable of determining whether or not the dog position of a dog transmission is in a transition state with a simple structure by a simple configuration. With the goal.

  In order to achieve the above object, the present invention is directed to driving a dog transmission of a vehicle including an internal combustion engine, drive wheels, and a dog transmission that transmits power between the internal combustion engine and the drive wheels. An internal combustion engine control apparatus comprising a control unit that detects a transition state between a state and a driven state and controls the internal combustion engine based on a detection result of the transition state, wherein the control unit rotates the internal combustion engine It is a first aspect to detect the transition state based on a rotational speed derived value derived from the number and a vehicle speed derived value derived from the speed of the vehicle.

  In the second aspect of the present invention, in addition to the first aspect, the control unit detects the transition state using a virtual engine speed determined from the speed of the vehicle as the vehicle speed derived value. And

  According to the present invention, in addition to the second aspect, the control unit uses the rotation speed of the internal combustion engine as the rotation speed derived value, and is based on a correlation between the rotation speed and the virtual engine rotation speed. Detecting the transition state is a third aspect.

  According to the present invention, in addition to the third aspect, the control unit detects the transition state based on a correlation between the change amount of the rotation speed and the change amount of the virtual engine rotation speed. Let's assume 4 aspects.

  In the present invention, in addition to the first aspect, the control unit uses a change amount of the rotation speed of the internal combustion engine as the rotation speed derived value, and uses a change amount of the vehicle speed as the vehicle speed derived value. The fifth aspect is to detect the transition state based on the correlation between the amount of change in the rotational speed and the amount of change in the speed.

  According to the present invention, in addition to any one of the first to fifth aspects, the control unit is further configured to change the transition based on whether or not there is an engine brake request determined according to an accelerator opening of the vehicle. Detecting a state is a sixth aspect.

  According to the control apparatus for an internal combustion engine according to the first aspect of the present invention described above, the control unit derives the rotational speed derived value derived from the rotational speed of the internal combustion engine, and the vehicle speed derived value derived from the vehicle speed. Based on the above, the transition state between the driving state and the driven state in the dog type transmission is detected. Therefore, whether or not the dog position of the dog type transmission is in the transition state with a simple configuration and with good discrimination Can be determined.

  Moreover, according to the control apparatus for internal combustion engines concerning the 2nd aspect of this invention, a control part detects a transition state using the virtual engine speed calculated | required from the speed of a vehicle as a vehicle speed derivation value. Therefore, it is possible to reliably determine whether or not the dog position of the dog transmission is in the transition state with a simple configuration.

  Further, according to the control apparatus for an internal combustion engine according to the third aspect of the present invention, the control unit uses the rotation speed of the internal combustion engine as the rotation speed derived value, and the correlation between the rotation speed and the virtual engine rotation speed. Since the transition state is detected based on the relationship, it is possible to reliably determine whether or not the dog position of the dog transmission is in the transition state with a simple configuration.

  Further, according to the control apparatus for an internal combustion engine according to the fourth aspect of the present invention, the control unit detects the transition state based on the correlation between the change amount of the rotation speed and the change amount of the virtual engine rotation speed. Therefore, it is possible to more reliably determine whether or not the dog position of the dog transmission is in the transition state with a simple configuration.

  Further, according to the control device for an internal combustion engine according to the fifth aspect of the present invention, the control unit uses the amount of change in the rotational speed of the internal combustion engine as the rotational speed derived value, and uses the amount of change in the vehicle speed as the vehicle speed derived value. Because the transition state is detected based on the correlation between the amount of change in the rotational speed and the amount of change in the speed using the amount of change, the dog position of the dog-type transmission is in the transition state with a simple configuration. It is possible to more reliably determine whether or not there is.

  Further, according to the control apparatus for an internal combustion engine according to the sixth aspect of the present invention, the control unit further changes the transition state based on whether or not the engine brake request determined according to the accelerator opening of the vehicle has changed. Therefore, without adding a sensor that detects the driver's shift operation, the dog position of the dog-type transmission is in a transition state with a simple configuration that uses an accelerator opening sensor that is an existing sensor. It can be determined with higher accuracy.

FIG. 1 is a block diagram showing a configuration of an internal combustion engine control apparatus according to an embodiment of the present invention. FIG. 2 is a flowchart showing a flow of engine control processing of the internal combustion engine control apparatus according to the present embodiment. FIG. 3 is a timing chart showing time-series changes in the engine speed and the vehicle speed when the dog-type transmission is switched from the driven state to the driven state during execution of the engine control process of the internal combustion engine control apparatus according to the present embodiment. It is. FIG. 4 is a timing chart showing time-series changes in the engine speed and the vehicle speed when the dog-type transmission is switched from the driving state to the driven state during the execution of the engine control process of the internal combustion engine control apparatus according to the present embodiment. It is.

Hereinafter, an internal combustion engine control apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. For the sake of convenience, the internal combustion engine control apparatus according to the present embodiment shows a configuration example based on the assumption that an electronically controlled throttle apparatus (DBW: Drive By Wire) is used as a throttle apparatus combined therewith.
[Configuration of internal combustion engine controller]
First, the configuration of the internal combustion engine control device in the present embodiment will be described with reference to FIG.

  FIG. 1 is a block diagram showing the configuration of the internal combustion engine control device in the present embodiment.

  As shown in FIG. 1, an internal combustion engine control device 1 according to the present embodiment is configured by an electronic control device such as an ECU (Electronic Control Unit), all of which are not shown in the drawing, an engine, driving wheels, a main clutch, and a dog type transmission. The vehicle is typically mounted on a saddle-type vehicle such as a motorcycle.

  The dog position indicating the relative positional relationship between the docks of the dog type transmission can take three states: a driving state, a driven state, and a transition state. Here, the driving state means a state in which the dog on the engine side drives the dog on the driving wheel side (positive side state). The driven state means a state where the dog on the driving wheel side drives the dog on the engine side (a state on the negative side). The transition state is a state between the driving state and the driven state, and means a state where the dog on the engine side and the dog on the driving wheel side are separated (free state). Here, the transition state corresponds to a backlash (play width) between dogs. However, in the transition state, the dog on the engine side and the dog on the driving wheel are merely in contact with each other, the dog on the engine side does not drive the dog on the driving wheel side, and the dog on the driving wheel side The state which does not drive the side dog may be included.

  The internal combustion engine control device 1 includes an engine speed calculation unit 2, an accelerator opening calculation unit 3, a gear position calculation unit 4, a vehicle speed calculation unit 5, a rider request determination unit 6, a virtual engine speed calculation unit 7, a dog-type speed change. A machine state determination unit 8, a ROM (Read Only Memory) 9, a RAM (Random Access Memory) 10, an engine control unit 11, a throttle motor drive circuit 12, a spark plug drive circuit 13, and a fuel injection valve drive circuit 14 are provided. . An engine speed calculation unit 2, an accelerator opening calculation unit 3, a gear position calculation unit 4, a vehicle speed calculation unit 5, a rider request determination unit 6, a virtual engine rotation number calculation unit 7, and a dog type transmission state determination unit 8 Typically, it is configured as a functional block at the time of execution of a control program in a CPU (Central Processing Unit) of the internal combustion engine control apparatus 1, but these may be configured as an electric circuit as necessary.

  The engine speed calculation unit 2 determines the actual engine speed (actual engine speed) based on an electrical signal corresponding to the crank angle of the engine (the crankshaft rotation angle not shown) output from the crank angle sensor 21. The engine rotational speed NE (rotational speed derived value) is calculated. The engine speed NE calculated in this way by the engine speed calculation unit 2 is used by the rider request determination unit 6 and the dog type transmission state determination unit 8.

  The accelerator opening calculation unit 3 calculates the accelerator opening ACC based on an electrical signal corresponding to the operation amount of an accelerator operating member (not shown) output from the accelerator position (AP) sensor 22. The accelerator opening ACC calculated by the accelerator opening calculation unit 3 in this way is used by the rider request determination unit 6. The accelerator operation member is typically an accelerator grip in a saddle riding type vehicle.

  The gear position calculation unit 4 is a gear selected by the dog transmission based on an electric signal output from the gear position (GP) sensor 23 and corresponding to the rotation position of a shift drum (not shown) of the dog transmission. The gear (gear position) GP is calculated. The gear position GP calculated in this way by the gear position calculation unit 4 is used by the virtual engine speed calculation unit 7 and the dog type transmission state determination unit 8.

  The vehicle speed calculation unit 5 calculates a vehicle speed VSP indicating the speed of the vehicle based on an output signal from the vehicle speed (VSP) sensor 24. The vehicle speed VSP calculated by the vehicle speed calculation unit 5 in this way is used by the virtual engine speed calculation unit 7.

  Based on the engine speed NE calculated by the engine speed calculator 2 and the accelerator opening ACC calculated by the accelerator opening calculator 3, the rider request determination unit 6 allows the driver (rider) of the vehicle to perform engine braking. Whether or not is requested. The determination result determined by the rider request determination unit 6 in this way is used by the dog transmission state determination unit 8.

  The virtual engine speed calculation unit 7 calculates a virtual engine speed HNE (vehicle speed derived value) based on the gear position GP calculated by the gear position calculation unit 4 and the vehicle speed VSP calculated by the vehicle speed calculation unit 5. To do. For example, for the virtual engine speed HNE, the virtual engine speed calculation unit 7 reads out table data stored in the ROM 9 by preliminarily defining the relationship between the vehicle speed VSP and the virtual engine speed HNE, It can be calculated by applying the speed VSP. The virtual engine speed HNE calculated in this way by the virtual engine speed calculation unit 7 is used by the dog type transmission state determination unit 8. As the vehicle speed derived value, in addition to the virtual engine speed HNE, the vehicle speed VSP calculated by the vehicle speed calculation unit 5 and the amount of change per time thereof may be used.

  The dog-type transmission state determination unit 8 includes an engine speed NE calculated by the engine speed calculation unit 2, a determination result indicating presence / absence of an engine brake request determined by the rider request determination unit 6, and a virtual engine speed calculation unit On the basis of the virtual engine speed HNE calculated in step 7 and the control data stored in the RAM 10, the dog position of the dog type transmission is in any of the driving state, the driven state, and the transition state. It is determined whether it is in. The determination result determined by the dog transmission state determination unit 8 in this way is used by the engine control unit 11.

  The ROM 9 is configured by a nonvolatile storage device, and stores a control program and control data for engine control processing described later.

  The RAM 10 is configured by a volatile storage device, and functions as a working area that stores a calculated value of the engine control unit 11, a determination result, and the like.

  The engine control unit 11 is configured by an arithmetic processing unit such as a CPU, and executes various processes by executing a control program stored in the ROM 9. Specifically, the engine control unit 11 is based on a determination result indicating whether the dog position of the dog transmission determined by the dog transmission state determination unit 8 is in a driving state, a transition state, or a driven state. To control the operation of the engine. For example, when the dog-type transmission changes from the transition state to the driving state, the engine control unit 11 prevents a mechanical shock from occurring when the engine-side dog abuts on the driving wheel-side dog. The throttle motor drive circuit 12, the spark plug drive circuit 13, and the fuel injection drive circuit 14 are controlled to control the output (drive force) of the engine. The throttle motor drive circuit 12, the spark plug drive circuit 13, and the fuel injection drive circuit 14 are controlled by the engine control unit 11 as needed, and may be controlled independently or in combination. May be.

  The throttle motor drive circuit 12 adjusts the intake air amount of the engine by controlling the throttle opening by controlling the throttle motor 25 according to the control signal from the engine control unit 11.

  The spark plug drive circuit 13 adjusts the ignition timing of the engine by controlling the ignition operation of the engine by the spark plug 26 according to the control signal from the engine control unit 11.

  The fuel injection valve drive circuit 14 adjusts the fuel injection timing and the fuel injection amount of the engine by controlling the operation of the fuel injection valve 27 that injects fuel into the engine in accordance with a control signal from the engine control unit 11.

The internal combustion engine control device 1 having the above configuration determines whether or not the dog position of the dog type transmission is in a transition state with a simple configuration by executing the following engine control process. The engine is controlled based on the determination result. Hereinafter, the operation of the internal combustion engine control apparatus 1 when executing the engine control process will be described in detail with reference to FIGS.
[Engine control processing]
FIG. 2 is a flowchart showing a flow of engine control processing of the internal combustion engine control apparatus 1 according to the embodiment of the present invention. FIG. 3 is a diagram showing time-series changes in the engine speed NE and the vehicle speed VSP when the dog-type transmission is switched from the driven state to the driven state when the engine control process of the internal combustion engine control apparatus 1 is executed. . FIG. 4 is a diagram showing time-series changes in the engine speed NE and the vehicle speed VSP when the dog type transmission is switched from the driven state to the driven state when the internal combustion engine control apparatus 1 executes the engine control process. .

  The flowchart shown in FIG. 2 starts when the straddle-type vehicle is activated and the internal combustion engine control device 1 is operated, and the engine control process proceeds to step S1. Such an engine control process is repeatedly executed while the vehicle is activated and the internal combustion engine control apparatus 1 is operating.

  In the process of step S1, the rider request determination unit 6 determines whether or not there has been an engine brake request (deceleration request) in the previous engine control process. Whether or not there has been an engine brake request in the previous engine control process is determined by, for example, reading the flag data stored in the RAM 10 and detecting the state when the engine brake request has been set. Can do. As a result of the determination, if there is an engine brake request in the previous engine control process, the rider request determination unit 6 advances the engine control process to the process of step S3. On the other hand, when there is no engine brake request in the previous engine control process, the rider request determination unit 6 advances the engine control process to the process of step S2.

  In the process of step S2, the rider request determination unit 6 performs the current engine control based on the engine speed NE calculated by the engine speed calculation unit 2 and the accelerator opening ACC calculated by the accelerator opening calculation unit 3. It is determined whether or not there is an engine brake request in the processing. As a result of the determination, if there is an engine brake request in the current engine control process, the rider request determination unit 6 sets the state of the flag that should be set to the on state when the engine brake request is made to the on state. After the information is stored in the RAM 10, the engine control process proceeds to step S5. On the other hand, when there is no engine brake request in the current engine control process, the rider request determination unit 6 advances the engine control process to the process of step S4.

  In the process of step S3, the rider request determination unit 6 performs the current engine control based on the engine speed NE calculated by the engine speed calculation unit 2 and the accelerator opening ACC calculated by the accelerator opening calculation unit 3. It is determined whether or not there is an engine brake request in the processing. As a result of the determination, if there is an engine brake request in the current engine control process, the rider request determination unit 6 sets the state of flag information that should be set to the on state when the engine brake request is made to the on state. Then, after the information is stored in the RAM 10, the engine control process proceeds to the process of step S6. On the other hand, when there is no engine brake request in the current engine control process, the rider request determination unit 6 advances the engine control process to the process of step S5.

  In the process of step S4, the rider request determination unit 6 determines that the determination result of the presence or absence of the engine brake request has not changed from the determination result in the previous engine control process, and determines the determination result as a dog-type transmission state determination unit. 8 is available. Thereby, the process of step S4 is completed, and the engine control process proceeds to the process of step S7.

  In the process of step S5, the rider request determination unit 6 determines that the determination result of the presence or absence of the engine brake request has changed from the determination result in the previous engine control process, and uses the determination result as a dog type transmission state determination unit. 8 is available. Thereby, the process of step S5 is completed, and the engine control process proceeds to the process of step S7.

  In the process of step S6, the rider request determination unit 6 determines that the determination result of the presence or absence of the engine brake request has not changed from the determination result in the previous engine control process, and determines the determination result as a dog-type transmission state determination unit. 8 is available. Thereby, step S6 processing is completed and engine control processing progresses to processing of step S7.

  In the process of step S7, the dog transmission state determination unit 8 reads the dog position data of the dog transmission stored in the RAM 10, and the dog position of the current dog transmission is in a transition state (free state). It is determined whether or not. As a result of the determination, if information indicating that the dog position is in the transition state is stored, the dog type transmission state determination unit 8 advances the engine control process to the process of step S9. On the other hand, when information indicating that the dog position is in the transition state is not stored, the dog transmission state determination unit 8 advances the engine control process to the process of step S8.

  In step S8, the dog-type transmission state determination unit 8 determines whether or not there is an engine brake request based on the determination results determined by the rider request determination unit 6 in step S4, step S5, and step S6. It is discriminated whether or not the discriminant result has changed from the discriminant result in the previous engine control process. As a result of the determination, if the determination result of the presence or absence of the engine brake request has changed from the determination result in the previous engine control process, the dog type transmission state determination unit 8 advances the engine control process to the process of step S9. . On the other hand, when the determination result of the presence or absence of the engine brake request has not changed from the determination result in the previous engine control process, the dog type transmission state determination unit 8 advances the engine control process to the process of step S15.

  In the process of step S9, the dog type transmission state determination unit 8 stores information in the RAM 10 that the current dog position is in the transition state. Thereby, the process of step S9 is completed, and the engine control process proceeds to the process of step S10.

  In the process of step S10, the dog-type transmission state determination unit 8 uses the engine speed (actual engine speed) NE calculated by the engine speed calculation unit 2 and the virtual engine calculated by the virtual engine speed calculation unit 7. A rotational speed difference DNE from the rotational speed HNE is calculated as a difference correlation value between the rotational speed derived value and the vehicle speed derived value. As described above, the calculation of the rotational speed difference DNE between the engine rotational speed NE and the virtual engine rotational speed HNE is for evaluating these correlations by the difference correlation, and therefore the correlation is surely evaluated. However, if necessary, these correlations may be evaluated by a ratio correlation from the ratio between the engine speed NE and the virtual engine speed HNE, and the load of the evaluation calculation increases. However, these correlations may be evaluated from a correlation equation that defines the correlation between the engine speed NE and the virtual engine speed HNE. Further, the amount of change per hour of the engine speed NE may be used as the rotational speed derived value, and the amount of change per hour of the virtual engine rotational speed HNE or the vehicle speed calculation unit 5 may be used as the vehicle speed derived value. The calculated vehicle speed VSP and the amount of change per time may be used. Thereby, the process of step S10 is completed, and the engine control process proceeds to the process of step S11.

  In the process of step S11, the dog-type transmission state determination unit 8 calculates a threshold value NEGAP based on the gear position GP calculated by the gear position calculation unit 4 and the engine speed NE calculated by the engine speed calculation unit 2. To do. Thereby, the process of step S11 is completed and the engine control process proceeds to the process of step S12.

  In the process of step S12, the dog type transmission state determination unit 8 determines whether or not the rotational speed difference DNE calculated in the process of step S10 is equal to or greater than the threshold value NEGAP calculated in the process of step S11. As a result of the determination, if the rotational speed difference DNE is equal to or greater than the threshold value NEGAP, the dog type transmission state determination unit 8 advances the engine control process to the process of step S13. On the other hand, when the rotation speed difference DNE is less than the threshold value NEGAP, the dog type transmission state determination unit 8 advances the engine control process to the process of step S15.

  In the process of step S13, the dog type transmission state determination unit 8 determines that the current dog position is in the transition state (free state). Thereby, the process of step S13 is completed and the engine control process proceeds to the process of step S14.

  Here, for example, when the dog position of the dog-type transmission changes from the driven state (negative side state) to the driving state (positive side state), the dog backlash (play width) causes the dog While the dog position of the transmission is in the transition state, the engine is in a no-load state, and the rotational speed difference DNE shows a relatively large value. However, while the dog position of the dog type transmission is in the transition state, the engine crankshaft and the drive wheel axle are not connected, so the virtual engine speed HNE does not show a relatively large value. For this reason, while the dog position of the dog-type transmission is in the transition state, the difference correlation between the engine speed NE that is the speed derived value and the virtual engine speed HNE that is the vehicle speed derived value is broken. This tendency is the same when the vehicle speed VSP is used as it is as the vehicle speed derived value. In such a case, it is not necessary to calculate the virtual engine speed HNE, and the calculation load is reduced. In addition, this tendency is based on the amount of change in engine speed NE per hour as the derived speed value and the amount of change in virtual engine speed HNE per hour and the amount of change in vehicle speed VSP per hour as the vehicle speed derived value. In such a case, the calculation load of the rotational speed derived value and the calculation load of the vehicle speed derived value increase, but the correlation between the rotational speed derived value and the vehicle speed derived value is more disrupted. Remarkably expressed.

  For example, as shown in FIG. 3, when the dog position of the dog-type transmission changes from the non-driven state to the driven state in time series, the dog-type transmission state determining unit 8 determines whether there is an engine brake request. The difference between the engine speed NE and the virtual engine speed HNE (or the vehicle speed VSP) from the time when the result is determined to have changed from the determination result in the previous engine control process (time t = t1) is the original state It is determined that the current dog position is in the transition state during the period up to the time of returning to (time t = t2).

  Similarly, as shown in FIG. 4, when the dog position of the dog-type transmission changes from the driving state to the driven state, the dog-type transmission state determination unit 8 indicates that the determination result of the presence or absence of the engine brake request is the previous result. The time when the difference correlation between the engine speed NE and the vehicle speed VSP (or the virtual engine speed HNE) returns to the original state from the time (time t = t3) when it is determined that the engine control process has changed. During the period up to (time t = t4), it is determined that the current dog position is in the transition state.

  In the process of step S14, the dog-type transmission state determining unit 8 holds the information indicating that the current dog position stored in the RAM 10 is in the transition state without updating. Thereby, the process of step S14 is completed and the engine control process proceeds to the process of step S19.

  In the process of step S15, the dog-type transmission state determination unit 8 performs the present engine control process based on the determination results determined by the rider request determination unit 6 in the process of step S4, the process of step S5, and the process of step S6. It is determined whether or not there is an engine brake request. As a result of the determination, if there is an engine brake request in the current engine control process, the dog transmission state determination unit 8 advances the engine control process to the process of step S16. On the other hand, when there is no engine brake request in the current engine control process, the dog type transmission state determination unit 8 advances the engine control process to the process of step S17.

  In the process of step S16, the dog type transmission state determination unit 8 determines that the current dog position is in the driven state (negative side state). Thereby, the process of step S16 is completed and the engine control process proceeds to the process of step S18.

  In the process of step S17, the dog type transmission state determination unit 8 determines that the current dog position is in the driving state (positive side state). Thereby, the process of step S17 is completed, and the engine control process proceeds to the process of step S18.

  In the process of step S18, the dog type transmission state determination unit 8 deletes (clears) information indicating that the current dog position stored in the RAM 10 is in the transition state (free state). Thereby, the process of step S18 is completed and the engine control process proceeds to the process of step S19.

  In the process of step S <b> 19, the engine control unit 11 controls the engine based on the dog position information stored in the RAM 10. Thereby, the process of step S19 is completed, and the current engine control process returns to the process of step S1.

  Specifically, the engine control unit 11 is a case where information indicating that the current dog position is in the transition state is stored in the RAM 10, and the dog position of the dog transmission is in the driving state. In the case of a transition, the throttle motor drive circuit 12, the spark plug drive circuit 13, and the fuel injection drive circuit 14 are controlled so that no mechanical shock is generated when the dog on the engine side contacts the dog on the drive wheel side. Thus, the engine output is controlled.

  The configuration of the internal combustion engine control device 1 according to the present embodiment is shown on the assumption that the electronic control type throttle device is applied in combination therewith. However, the present invention is not limited to this, and the internal combustion engine control device is not limited thereto. As the throttle device combined with 1, a mechanical throttle device can also be applied. In addition, when such a mechanical throttle device is applied, the determination as to whether or not there is an engine brake request can be made using the throttle opening.

  As is clear from the above description, in the internal combustion engine control apparatus 1 in the present embodiment, the dog-type transmission state determination unit 8 is derived from the rotational speed derived value derived from the engine rotational speed NE and the vehicle speed VSP. Because the transition state of the dog transmission is detected based on the vehicle speed derived value, it is easy to detect the shift operation (operation of the shift pedal) by the driver using an additional sensor such as a load sensor. With this configuration, it is possible to determine whether or not the dog position of the dog type transmission is in the transition state with good discrimination.

  Further, in the internal combustion engine control apparatus 1 in the present embodiment, the dog transmission state determination unit 8 detects the transition state using the virtual engine speed HNE obtained from the vehicle speed VSP as the vehicle speed derived value. Therefore, it is possible to reliably determine whether or not the dog position of the dog transmission is in the transition state with a simple configuration.

  Further, in the internal combustion engine control apparatus 1 in the present embodiment, the dog type transmission state determination unit 8 uses the rotational speed NE of the internal combustion engine as the rotational speed derived value, the rotational speed NE, the virtual engine rotational speed HNE, Since the transition state is detected based on the correlation, it is possible to reliably determine whether or not the dog position of the dog transmission is in the transition state with a simple configuration.

  Further, in the internal combustion engine control apparatus 1 according to the present embodiment, the dog-type transmission state determination unit 8 causes the correlation between the change amount per hour of the rotational speed NE and the change amount per hour of the virtual engine speed HNE. Therefore, it is possible to more reliably determine whether or not the dog position of the dog type transmission is in the transition state with a simple configuration.

  Further, in the internal combustion engine control apparatus 1 according to the present embodiment, the dog-type transmission state determination unit 8 uses the amount of change per hour of the rotational speed NE of the internal combustion engine as the rotational speed derived value, and the vehicle speed derived value as the vehicle speed derived value. Since the change amount per hour of the speed VSP is used to detect the transition state based on the correlation between the change amount per hour of the rotational speed NE and the change amount per hour of the vehicle speed VSP, With a simple configuration, it is possible to reliably determine whether or not the dog position of the dog transmission is in the transition state.

  Further, in the internal combustion engine control apparatus 1 according to the present embodiment, the dog-type transmission state determination unit 8 further changes the transition state based on whether or not the engine brake request determined according to the accelerator opening ACC of the vehicle has changed. Therefore, without adding a sensor for detecting the driver's shift operation, the dog position of the dog-type transmission is in a transition state with a simple configuration using the accelerator position sensor 22 which is an existing sensor. It can be determined with higher accuracy.

  In the present invention, the type, shape, arrangement, number, and the like of the members are not limited to the above-described embodiment, and the gist of the invention is appropriately replaced such that the constituent elements are appropriately replaced with those having the same operational effects. Of course, it can be changed as appropriate without departing from the scope.

  As described above, the present invention can provide an internal combustion engine control device that can determine whether or not the dog position of the dog-type transmission is in the transition state with a simple configuration by a simple configuration. Therefore, it is expected that it can be widely applied to internal combustion engine control devices such as vehicles because of its general-purpose universal character.

DESCRIPTION OF SYMBOLS 1 ... Internal combustion engine control device 2 ... Engine speed calculation part 3 ... Accelerator opening degree calculation part 4 ... Gear position calculation part 5 ... Vehicle speed calculation part 6 ... Rider request discrimination | determination part 7 ... Virtual engine speed calculation part 8 ... Dog type Transmission state discriminator 9 ... ROM
10 ... RAM
DESCRIPTION OF SYMBOLS 11 ... Engine control part 12 ... Throttle motor drive circuit 13 ... Spark plug drive circuit 14 ... Fuel injection valve drive circuit 21 ... Crank angle sensor 22 ... Accelerator position (AP) sensor 23 ... Gear position (GP) sensor 24 ... Vehicle speed ( VSP) sensor 25 ... throttle motor 26 ... spark plug 27 ... fuel injection valve

Claims (6)

Detecting a transition state between a driving state and a driven state of the dog-type transmission of a vehicle having an internal combustion engine, a driving wheel, and a dog-type transmission that transmits power between the internal combustion engine and the driving wheel In addition, in the internal combustion engine control device comprising a control unit that controls the internal combustion engine based on the detection result of the transition state,
The control unit detects the transition state based on a rotational speed derived value derived from the rotational speed of the internal combustion engine and a vehicle speed derived value derived from the speed of the vehicle. Control device.   2. The internal combustion engine control device according to claim 1, wherein the control unit detects the transition state using a virtual engine speed obtained from a speed of the vehicle as the vehicle speed derived value.   The controller uses the rotation speed of the internal combustion engine as the rotation speed derived value, and detects the transition state based on a correlation between the rotation speed and the virtual engine rotation speed. The internal combustion engine control device according to claim 2.   The internal combustion engine control device according to claim 3, wherein the control unit detects the transition state based on a correlation between the amount of change in the rotational speed and the amount of change in the virtual engine rotational speed. .   The control unit uses the amount of change in the rotation speed of the internal combustion engine as the rotation speed derived value, and uses the amount of change in the vehicle speed as the vehicle speed derived value, and the amount of change in the rotation speed, The internal combustion engine control device according to claim 1, wherein the transition state is detected based on a correlation with the change amount of the speed. The said control part further detects the said transition state based on the presence or absence of the request | requirement of the engine brake determined according to the accelerator opening degree of the said vehicle changing, The said transition state is characterized by the above-mentioned. The internal combustion engine control apparatus described.

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