JP2013072408A - Control device of engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device of an engine capable of representing various and further bodily sensitive comfortableness.SOLUTION: When an engine 17 is in an operation state, a control unit 71 controls a combustion adjusting part 75 so as to change a period of an audible sound or bodily sensible vibration generated by the engine 17.

Description

  The present invention relates to an engine control device that adjusts the combustion state of an engine.

  In a saddle-ride type vehicle such as a motorcycle, the sound pressure level of the sound pressure level waveform of the audible sound wave generated from the engine is changed by changing the fuel supply amount, ignition timing, and intake air amount to the engine, and the engine moves A technique for telling a rider that the vehicle is in a change in sound is disclosed (for example, see Patent Document 1).

JP 2006-043622 A

By the way, hobbies and preferences of users have been diversified in recent years, and it has been desired to produce a comfortable feeling of the engine for various users.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an engine control device that can produce various and more comfortable feelings.

In order to solve the above-described problems, the present invention includes a combustion adjustment unit (75) that adjusts the combustion state of the engine (17) and a combustion control unit (71) that controls the combustion adjustment unit (75). In the engine control device, the combustion control unit (71) changes the period of audible sound or sensible vibration generated by the engine (17) in a predetermined operation state of the engine (17). The combustion adjusting section (75) is controlled.
According to this configuration, the combustion adjustment unit is controlled so as to change the period of the audible sound generated by the engine or the sensible vibration, so that the audible sound and the sensible vibration that cannot be obtained by the conventional engine are suppressed. It can be realized and a new rhythm and tempo can be given. As a result, it is possible to emphasize all of the presence, comfort, and heartbeat, and it is possible to provide an engine that can produce various and more comfortable feelings.

In the above configuration, the combustion control unit (71) includes a normal mode for controlling the combustion adjustment unit (75) so that the engine (17) is in a combustion state corresponding to a predetermined target operation state, and the engine You may make it switch an operation mode between the change modes which control the said combustion adjustment part (75) so that the period of the audible sound generated by (17) or the vibration which can be felt is changed. According to this configuration, the audible sound and vibration rhythm can be changed according to the user's wishes, and can be adapted to various user preferences.
In the above configuration, a mode switch (77A) for switching between the normal mode and the change mode may be provided. According to this configuration, the user can easily switch modes.

Further, in the above-described configuration, a combustion pattern storage unit (72) that stores a combustion pattern for changing a cycle of audible sound generated by the engine (17) or a sensible vibration in a predetermined pattern is provided, and the combustion control unit ( 71) may control the combustion adjusting section (75) based on the combustion pattern. According to this configuration, the audible sound and the periodic change of vibration can be repeatedly reproduced, and the change / setting of the change is easy.
Moreover, the said structure WHEREIN: You may make it the said combustion pattern include the combustion stop of the said engine (17). According to this configuration, the interval between audible sounds and vibration rhythms can be increased, a unique rhythm that cannot be obtained by a conventional engine can be obtained, and rhythm variations can be increased.

In the above configuration, the combustion pattern includes information on fuel injection and / or ignition of the engine (17), and includes at least one information of fuel injection amount, fuel injection pause, injection timing, or ignition timing. It may be included. According to this configuration, since fuel injection and ignition information essential for engine control are used, it is not necessary to add special engine control or engine structure.
In the above configuration, a combustion pattern changeover switch (77B) for switching the combustion pattern may be provided. According to this configuration, the user can easily switch the combustion pattern.

In the above configuration, the combustion control unit (71) stores the combustion pattern selected by the user for each operation state of the engine (17), and adjusts to the operation state of the engine (17) according to the storage. The combustion pattern may be selected. According to this configuration, the user's preference can be learned and reflected automatically, and the groove sound corresponding to the driving state is fed back to the user, so that the driving state can be easily grasped.
Further, in the above configuration, the combustion control unit (71) generates the change in the cycle of the audible sound generated by the engine (17) or the sensible vibration cycle at a predetermined cycle. ) May be controlled. According to this configuration, it is possible to reproduce a fluctuation rhythm that changes in a predetermined cycle, which is one of the rhythms used in the music field such as black music, and a unique rhythm that cannot be obtained by conventional engines. Can be obtained.

In the above configuration, a random number generator (93) that generates a random number and a combustion pattern generator (94) that generates the combustion pattern based on the random number generated by the random number generator (93) are provided. Anyway. According to this configuration, it is easy to create a combustion pattern, and variations of the combustion pattern can be easily increased.
In the above configuration, the combustion adjustment unit (75) includes the fuel supply device (43), the ignition device (56), the intake air variable device (42), the variable valve operating device (55), cylinder deactivation, and idling. Any one or a combination of a plurality of rotation speed adjusting devices may be used. According to this configuration, it is possible to change the period of audible sound and vibration generated by the engine using any one or more of various devices necessary for engine control.

  Further, in the above configuration, when the plurality of engines (17) are driven at a cycle of individual audible sounds, the cycle of audible sounds generated by each engine (17) is changed by the control of the combustion control unit (71). You may make it provide a polyrhythm control part (95) which controls a combustion pattern to the combustion pattern in which the audible sound of all the said engines (17) synchronizes with a period longer than the period of each audible sound. According to this configuration, it is possible to realize a composite rhythm, that is, a polyrhythm, in which plural kinds of phrases having different rhythms are combined while including an audible sound and vibration synchronized with a long cycle.

In the present invention, the combustion adjustment unit is controlled so as to change the period of the audible sound generated by the engine or the sensible vibration, so that the fluctuation of the audible sound and the sensible vibration that could not be obtained by the conventional engine is realized. It is possible to provide an engine that can produce various and more comfortable feelings.
In addition, a normal mode for controlling the combustion adjustment unit so that the engine is in a combustion state corresponding to a predetermined target operation state, and a combustion adjustment unit for changing the period of audible sound generated by the engine or a sensible vibration. If the operation mode is switched between the change mode for controlling the audible sound, the audible sound and the rhythm of vibration can be changed according to the user's wishes, and it can be adapted to various user preferences.
In addition, if a mode switching switch for switching between the normal mode and the change mode is provided, the user can easily switch the mode.

In addition, if a combustion pattern that changes an audible sound generated by the engine or a period of vibration that can be felt in a predetermined pattern is stored and the combustion adjustment unit is controlled based on the stored combustion pattern, the audible sound or The periodic change of vibration can be repeatedly reproduced, and change / setting of this change is easy.
In addition, if the combustion pattern includes combustion stop of the engine, the interval between audible sounds and vibration rhythms can be expanded, and a unique rhythm that cannot be obtained with conventional engines can be obtained. The rhythm variation can be increased.
Further, the combustion pattern includes information on fuel injection and / or ignition of the engine, and includes at least one information of fuel injection amount, fuel injection pause, injection timing, or ignition timing. Since the fuel injection and ignition information essential for control are used, there is no need to add special engine control or engine structure.

Further, if a combustion pattern switching switch for switching the combustion pattern is provided, the user can easily switch the combustion pattern.
If the combustion pattern selected by the user for each engine operating state is stored, and the combustion pattern is selected according to the engine operating state according to this memory, the user's preference is learned and automatically reflected. In addition, since the groove sound according to the driving state is fed back to the user, it becomes easy to grasp the driving state.
In addition, if the combustion adjustment unit is controlled so that a change in the period of audible sound generated by the engine or vibration that can be felt is generated at a predetermined period, one of the rhythms used in the music field such as black music can be obtained. Can be reproduced, and a unique rhythm that could not be obtained with a conventional engine can be obtained.

Also, if a random number generator for generating a random number and a combustion pattern generator for generating a combustion pattern based on the random number generated by the random number generator are provided, it is easy to create the combustion pattern and the combustion Pattern variations can be easily increased.
In addition, the combustion adjustment unit may be any one or a combination of a fuel supply device, an ignition device, an intake air amount variable device, a variable valve device, a cylinder deactivation, and an idling rotation speed adjustment device. Any one or more of various devices necessary for engine control can be used to change the period of audible sound and vibration generated by the engine.
In addition, when multiple engines are driven with individual audible sound cycles, the combustion pattern in which the audible sound cycle generated by each engine changes is changed so that the audible sound of all engines is longer than the cycle of each audible sound. By providing a polyrhythm control unit that controls the synchronized combustion pattern, a composite rhythm that combines audible sounds and vibrations that synchronize with a long period, combined with multiple types of phrases with different rhythms, that is, a polyrhythm is realized. can do.

1 is a side view of a motorcycle according to an embodiment of the present invention. It is a figure which shows the control system of an engine. It is a block diagram which shows a control unit with a periphery structure. (A) shows the sound pressure waveform in the normal mode, and (B) and (C) are diagrams for explaining the sound pressure waveform in the change mode. It is a figure which shows the control system of the engine which concerns on a modification. It is a figure which shows the polyrhythm control part which concerns on a modification.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, directions such as front and rear, left and right, and up and down are directions as viewed from the vehicle occupant (operator).
FIG. 1 is a side view of a motorcycle 10 according to an embodiment of the present invention.
The motorcycle 10 is a cruiser type motorcycle, and includes a body frame 11, a pair of left and right front forks 13 rotatably supported by a head pipe 12 attached to a front end portion of the body frame 11, and a front fork. Steering handle 15 attached to a top bridge 14 that supports the upper end of 13, a front wheel 16 that is rotatably supported by a front fork 13, and an engine (power unit) as an internal combustion engine that is supported by a vehicle body frame 11 17, exhaust mufflers 19A and 19B connected to the engine 17 via exhaust pipes 18A and 18B, a rear swing arm 21 supported by a pivot 20 at the lower rear portion of the vehicle body frame 11 so as to be swingable up and down, A rear wheel 22 rotatably supported at the rear end of the rear swing arm 21; Rear cushion 23 is disposed between the A swing arm 21 and the body frame 11.

The vehicle body frame 11 includes a main frame 25 that extends rearward and downward from the head pipe 12, a pair of left and right pivot plates (also referred to as a center frame) 26 that are coupled to the rear portion of the main frame 25, and a lower portion of the main frame 25 from the head pipe 12. And a down tube 27 extending rearward and connected to the pivot plate 26. The fuel tank 28 is supported so as to straddle the main frame 25, the main frame 25 extends to above the rear wheel 22 to support the rear fender 29, and the seat 30 is supported between the rear fender 29 and the fuel tank 28.
In FIG. 1, reference numeral 31 denotes a radiator supported by the down tube 27, reference numeral 32 denotes a front fender, reference numeral 33 denotes a side cover, reference numeral 34 denotes a headlight, reference numeral 35 denotes a taillight, and reference numeral 36 denotes an occupant step. .

The engine 17 is supported by the vehicle body frame 11 via a plurality of engine brackets 37 (only a part is shown in FIG. 1), and is disposed in a space surrounded by the main frame 25, the pivot plate 26 and the down tube 27.
This engine 17 is a V-type two-cylinder four-cycle engine in which two cylinders are arranged in a V shape, and a crankcase 105 that supports the crankshaft 101, the transmission mechanism 102, and the like, and a crankcase 105 that stands up frontward. The front bank 110A is provided, and the rear bank 110B is provided so as to rise rearward from the crankcase 105. Between the front bank 110A and the rear bank 110B, an air cleaner 41 and a throttle body 42 constituting an engine intake system are provided.

FIG. 2 is a diagram showing a control system of the engine 17. The control system of the front bank 110A and the rear bank 110B is the same, and FIG. 2 shows one bank (the front bank 110A).
The front bank 110 </ b> A has a cylinder portion 47 in which a piston 46 connected to the crankshaft 101 via a connecting rod 45 is slidable, and a cylinder head 48 that covers an upper portion of the cylinder portion 47. The cylinder head 48 includes an intake port 51 and an exhaust port 52 that communicate with the combustion chamber 50 facing the top of the piston 46, a valve mechanism 54 that controls intake and exhaust to the combustion chamber 50, and an air-fuel mixture in the combustion chamber 50. An ignition device 56 is provided for igniting.
An intake passage 61 is connected to the intake port 51, and an air cleaner 41, a throttle body 42 that is an intake air amount variable device, and an injector 43 that is a fuel supply device are provided in this intake passage 61 in order from upstream. The supply amount of the purified air is adjusted by a throttle valve (also referred to as an intake throttle valve) 44 of the throttle body 42 and supplied to the banks 110A and 110B together with the fuel supplied from the injector 43.

  The motorcycle 1 of the present embodiment includes a throttle valve drive unit (for example, a drive motor) 63 that opens and closes a throttle valve 44 provided corresponding to each bank 110A, 110B, so-called throttle-by-wire. It is configured in a form (also referred to as an electronic throttle form). That is, in the motorcycle 1, the operation of the throttle grip (throttle operator) 15A operated by the operator (user) with the right hand is detected by the throttle opening sensor 64 described later, and the throttle valve drive unit is based on the detection result. 63 drives the throttle valve 44.

The valve mechanism 54 includes an intake valve 54A that opens and closes the intake port 51 and an exhaust valve 54B that opens and closes the exhaust port 52. The intake and exhaust valves 54A and 54B are synchronized with the rotation angle of the crankshaft 101. It drives and performs intake / exhaust control corresponding to each process (intake stroke, compression stroke, combustion stroke, exhaust stroke) of the 4-cycle engine.
In this embodiment, the valve mechanism 54 is a variable valve that varies the opening / closing characteristics of the intake / exhaust valves 54A, 54B by increasing / decreasing the opening / closing timing of the intake / exhaust valves 54A, 54B and the opening / closing amount. And more specifically, the variable valve operating device 55 has an intake valve control device 55A for changing the open / close characteristics of the intake valve 54A and an open / close characteristic of the exhaust valve 54B. An exhaust valve control device 55B that can be varied is provided, and the engine output characteristics can be varied by changing the open / close characteristics of the intake / exhaust valves 54A and 54B.

  The control unit 71 is a computer that functions as an engine control unit (ECU). The control unit 71 functions as a driving state detection unit that acquires information from each part of the vehicle body including a driver's operation, and a controlled unit based on the driving state. It functions as a control unit that controls (the throttle body 42, the ignition device 56, the variable valve operating device 55, etc.). In the figure, reference numeral 38 denotes a catalytic converter provided in the exhaust pipe 18A.

FIG. 3 is a block diagram showing the control unit 71 together with the peripheral configuration.
Broadly speaking, the control unit 71 is connected to a sensor unit 73 that acquires information on each part of the vehicle body, a combustion adjustment unit 75 that adjusts the combustion state of the engine 17, and an operation unit 77 that is operated by the operator. Yes.
The sensor unit 73 includes a crank angle sensor (engine speed sensor) 81 for detecting the engine speed, a vehicle speed sensor 82 for detecting the vehicle speed, an intake negative pressure sensor 83 for detecting the intake negative pressure, and an intake flow rate sensor for detecting the intake flow speed. 84, an intake air temperature sensor 85 for detecting the intake air temperature of each bank 110A, 110B, a throttle opening sensor 86 for detecting the operation of the throttle grip 15A, an intake valve lift amount sensor 87 for detecting the lift amount of the intake valve 54A, An exhaust valve lift amount sensor 88 that detects the lift amount of the exhaust valve 54B, an oxygen sensor 89 that detects the oxygen concentration of the exhaust gas, and an atmospheric pressure sensor 90 that detects the atmospheric pressure.

  The combustion adjusting unit 75 controls an ignition device 56 provided in each bank 110A, 110B, an injector (fuel supply device) 43 that supplies fuel to each bank 110A, 110B, and an intake air amount of each bank 110A, 110B. It has a throttle valve drive unit 63, an intake valve control device 55A that controls the intake valves 54A of the banks 110A and 110B, and an exhaust valve control device 55B that controls the exhaust valves 54B of the banks 110A and 110B. That is, the combustion state of the engine 17 is determined by a combination of parameters such as ignition timing, fuel supply, intake air, and opening / closing characteristics of the intake / exhaust valves 54A and 54B, and the combustion state of the engine 17 is changed even if any of the parameters is changed. Changes can be made.

In the present embodiment, by causing the combustion state to change, the timing at which the maximum value of the audible sound generated by the engine 17 and the sensible vibration appears is changed back and forth on the time axis, that is, the engine sound and the engine A rhythm changing function for changing the rhythm of vibration is provided.
Hereinafter, for convenience of explanation, “engine sound and engine vibration” will be referred to as “engine sound and the like”. In the motorcycle 1 of the present embodiment, the maximum value of the engine sound and the maximum value of the engine vibration are generated at substantially the same timing, but may be configured to be generated at different timings.

The relationship between the engine sound and the combustion state of the engine 17 will be described. In the four-cycle engine, the largest energy is generated in the combustion process, and at this time, the maximum value such as the engine sound is generated. Therefore, the ignition timing during the combustion process is a major factor that defines the timing of maximum values such as engine noise.
However, only the ignition timing does not define the maximum timing such as engine noise, but the timing of fuel injection, the injection amount, or its transient change, the timing of opening the throttle valve 44, or the amount of opening Alternatively, the time from the start of ignition to the complete combustion of the air-fuel mixture may change or the combustion chamber 50 may vary depending on the transient change, the opening / closing timing of the intake valve 54A or the exhaust valve 54B, the lift amount, or the transient change. Since the time from the start of ignition to complete combustion changes due to the change in the flow of the air-fuel mixture, it becomes an element that defines the timing of the maximum value.

In other words, the rhythm can be changed by shifting the timing of the maximum value such as engine sound back and forth regardless of any of the ignition timing, the fuel supply amount, the intake amount, and the open / close characteristics of the intake and exhaust valves 54A and 55B. Is possible.
Therefore, in the present embodiment, in addition to the normal mode in which the combustion adjusting unit 75 is controlled so that the engine 17 is in a combustion state corresponding to a predetermined target operation state, the above-described elements are changed to maximize the engine sound or the like. A change mode for controlling the combustion adjustment unit 75 is provided so as to shift the timing of the above and below, and the operation can be performed in any one of the operation modes.

Specifically, the storage unit (combustion pattern storage unit) 72 of the control unit 71 stores a control program 72A for operating in the above operation mode and data of a plurality of combustion patterns 72B corresponding to each operation mode. The operation unit 77 is provided with a mode changeover switch 77A for switching between the normal mode and the change mode, and a combustion pattern changeover switch 77B for switching the combustion pattern 72B.
FIG. 2 shows a case in which the mode changeover switch 77A and the combustion pattern changeover switch 77B are provided in the vicinity of the throttle grip 15A so that the driver can operate with the right hand. In FIG. 2, “A” indicates a switch to the normal mode, “B” indicates a switch to the change mode, and “C” indicates the combustion pattern switch 77B.

4A shows the sound pressure waveform in the normal mode, FIG. 4B shows the change from the normal mode to the change mode, and FIG. 4C shows the sound pressure waveform in the change mode. The horizontal axis corresponds to time, and the vertical axis corresponds to sound pressure. These figures show a case where the input information (throttle operation amount and various information around the engine 17) detected by the sensor unit 73 is the same. In FIG. 4, a white circle (◯) indicates the front bank 110A. The maximum value of the engine sound is shown, and the black circle (●) shows the maximum value of the engine sound of the rear bank 110B.
The combustion pattern 72B corresponding to the normal mode is map data for controlling the combustion adjustment unit 75 in accordance with input information detected by the sensor unit 73, and a combustion control value (ignition) for obtaining optimum engine performance from the input information. Timing, fuel injection amount, throttle valve opening, and open / close characteristics of the intake / exhaust valves 54A and 54B).
Therefore, as shown in FIG. 4A, if the input information detected by the sensor unit 73 is the same, the maximum value of the engine sound generated during one cycle of the engine 17 (crank angle 720 °). The timing is the same every time.
The engine 17 of the present embodiment is configured such that engine sound local maximum values are generated at unequal intervals by the front bank 110A and the rear bank 110B.

On the other hand, in the combustion pattern 72B corresponding to the change mode, the timing of the maximum value of the engine sound generated during one cycle of the engine 17 is determined by an occupant or the like every cycle of the engine 17, every cycle, or every random cycle. The pattern changes to a recognizable level.
More specifically, as the data of the combustion pattern 72B, information indicating the advance time and delay time with respect to the normal mode (information corresponding to the arrow in FIG. 4B), that is, data of the difference time with respect to the normal mode is used. It is done. Then, the control unit 71 sets a combustion control value (ignition timing, fuel injection amount, throttle valve opening, opening / closing characteristics of the intake / exhaust valves 54A and 54B) based on this data, and controls the combustion adjustment unit 75. Thus, the sound pressure waveform shown in FIG. 4C, that is, the sound pressure waveform in which the timing of the maximum value of the engine sound is changed by the amount of the arrow in FIG. 4B is obtained.
As described above, if the change mode combustion pattern 72B is set based on the difference time with respect to the normal mode combustion pattern 72B, it becomes easier to set the change mode combustion pattern 72B, and the change mode is changed based on the normal mode. There is a merit that it is easy to make a rhythm.
The data of the combustion pattern 72B in this change mode is not limited to data using the above-mentioned time. For example, the data is used to give a change on the time axis to the map data that controls the combustion adjustment unit 75 according to the input information. It may be applied and various changes are possible.

Next, the operation will be described.
When the operator operates the mode changeover switch 77A with the engine 17 started, the control unit 71 switches the operation mode between the normal mode and the change mode according to this switch operation. Here, when the mode is switched to the normal mode, the control unit 71 reads the data of the combustion pattern 72B corresponding to the normal mode stored in the storage unit 72, and based on this data, the current acquired through the sensor unit 73 The combustion control value corresponding to the input information is set, and the combustion adjustment unit 75 is controlled based on this combustion control value.

On the other hand, when switching to the change mode, the control unit 71 reads the data of the combustion pattern 72B corresponding to the change mode stored in the storage unit 72. A plurality of pieces of data of the combustion pattern 72B corresponding to the change mode are stored, and when the combustion pattern changeover switch 77B is operated by the operator, the control unit 71 performs another operation corresponding to the change mode according to this switch operation. Data of the combustion pattern 72B is read out.
Next, the control unit 71 specifies a combustion control value corresponding to the current input information acquired via the sensor unit 73 based on the read combustion pattern 72B, and controls the combustion adjustment unit 75 based on this combustion control value. Control. More specifically, when the data of the combustion pattern 72B in the change mode is the difference time, the control unit 71 first determines the current based on the data of the combustion pattern 72B corresponding to the normal mode stored in the storage unit 72. After specifying the combustion control value corresponding to the input information, the combustion control value is corrected by applying a conversion rule defined in advance so as to give the difference time, and the combustion adjustment is performed based on the corrected combustion control value The unit 75 is controlled.

For example, when the combustion timing is advanced, the ignition timing and the fuel injection timing are controlled earlier than the reference timing (corresponding to the timing in the normal mode), or the rich mixture in the combustion chamber 50 is ignited early. In order to change the open / close characteristics of the intake / exhaust valves 54A and 54B so as to reach the device 56 or to accelerate the flow of the air-fuel mixture, and to retard the combustion timing, the reverse control to the above is performed, or the fuel What is necessary is just to reduce the injection amount (compared to the normal mode). In addition, the control which changes a combustion timing like this can apply widely the control which fine-tunes a well-known combustion timing.
Further, the combustion mode 72B in the change mode may include a combustion pause (cylinder pause) in the combustion process of the engine 17. In this case, the control unit 71 is realized by stopping fuel injection and stopping ignition in one cycle of the engine 17. According to this configuration, since the interval between the maximum values of the engine sound is increased by the amount of cylinder deactivation, it is possible to greatly change the rhythm of the engine sound.

As described above, in the change mode, when the engine 17 is in the operating state, the control unit 71 controls the combustion adjustment unit 75 so as to change the cycle of the audible sound generated by the engine 17. It is possible to realize fluctuations in audible sound, which could not be obtained with, and to add new rhythms and tempos. As a result, it is possible to emphasize the presence, comfort, and heartbeat more, and it is possible to provide the engine 17 that can produce various and more comfortable feelings.
In addition, if the period of the audible sound of the engine 17 is changed, the period of the vehicle body vibration experienced by the occupant also changes, so that it is possible to realize vibration fluctuations that can be experienced that could not be obtained with conventional engines. This makes it possible to emphasize the presence, comfort, and heartbeat, and to produce a variety of more comfortable feelings.
In addition to the sound and vibration directly generated from the engine 17, the audible sound generated by the engine 17 and the sensible vibration can be indirectly generated from parts other than the engine 17 (drive system, tire, etc.) by the engine control. It also includes typical audible sounds and vibrations. These total audible sounds and vibrations can produce various and more comfortable comforts.

Further, the normal mode in which the combustion adjusting unit 75 is controlled so that the engine 17 enters a combustion state corresponding to a predetermined target operating state, and the combustion adjusting unit 75 is controlled so as to change the audible sound generated by the engine 17. Since the operation mode is switched between the change mode and the occupant's desire, the rhythm such as audible sound and vibration can be changed, so that it can be adapted to various occupant preferences.
Further, since the mode changeover switch 77A for switching the operation mode and the combustion pattern changeover switch 77B for switching the combustion pattern 72B in the change mode are provided, the passenger can easily change the mode and the combustion pattern.

Further, in the present embodiment, a combustion pattern 72B that changes the cycle of audible sound or sensible vibration generated by the engine 17 in a predetermined pattern is stored in the storage unit 72, and the combustion adjustment unit is based on the stored combustion pattern 72B. 75 is controlled, it is possible to repeatedly reproduce the audible sound and the periodic change of vibration as compared with the case where information such as the combustion pattern 72B is not stored, and it is also easy to change / set this change.
In the present embodiment, the cycle of the audible sound is determined based on at least one of the control values essential for engine control such as ignition timing, fuel supply, intake, and open / close characteristics of the intake / exhaust valves 54A and 54B. Because it is changed, there is no need to add special engine control or engine structure, and the rhythm of engine sound and engine vibration can be changed using normal control values, suppressing the increase in the number of parts and the complexity of the structure Can do.

Conventionally, the motorcycle 10 equipped with this type of V-type two-cylinder engine 17 is supported by a user who prefers a beating feeling obtained by making the combustion intervals of the engine 17 unequal. Then, since the engine control is applied to the motorcycle 10, the satisfaction level of the user who likes the beating feeling can be further improved.
Furthermore, since the combustion mode 72B of the engine 17 is included in the combustion pattern 72B in the change mode, the interval between audible sounds and vibration rhythms can be expanded, and a unique rhythm that cannot be obtained with a conventional engine can be obtained. And the variation of a rhythm can be increased.

  As described above, in this embodiment, the audible sound and vibration rhythm, which are monotonous in the conventional motorcycle, can be changed, so that there are grooves used in the music field such as black music such as jazz, reggae, soul, etc. It becomes possible to reproduce a rhythm (a rhythm with fluctuations based on a predetermined rule). Therefore, a new motorcycle 10 capable of realizing a so-called groove sound can be provided. Further, the motorcycle 10 can have various individualities depending on the way of controlling the groove.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.
For example, the control unit 71 stores a combustion pattern 72B selected by the occupant for each operating state of the engine 17, and automatically selects the stored combustion pattern 72B in accordance with the operating state of the engine 17. You may make it have.
Specifically, for example, at the time of first idling immediately after the start of the engine 17 (referred to as the first driving state), the operator sets the normal mode, the detection speed of the vehicle speed sensor 82 is zero, and the crank angle sensor 81. When the stable idling (referred to as the second driving state) from the detection result of the above, the operator selects the change mode, switches to the predetermined first combustion pattern 72B, and the throttle grip 15A is detected from the detection result of the throttle opening sensor 86. When the vehicle is opened and the detected speed of the vehicle speed sensor 82 is higher than a predetermined speed (referred to as the third driving state), the operator switches to the second combustion pattern 72B in the change mode, and the detected angle of the vehicle speed sensor 82 is zero. It is assumed that the operator switches to the first combustion pattern 72B in the change mode at the time of stop (referred to as the fourth driving state).

In this case, the control unit 71 associates the normal mode with the first operation state, associates the first combustion pattern 72B with the shift mode with the second operation state, and associates the second combustion pattern 72B with the shift mode with the third operation state. The association data in which the first combustion pattern 72B of the shift mode is associated with the association and the fourth operation state is created and stored in the storage unit 72, and thereafter, the first operation state is based on the detection result of the sensor unit 73. Is set to the normal mode, and if it is in the second operation state, it is set to the first combustion pattern 72B in the shift mode, and if it is in the third operation state, it is set to the second combustion pattern 72B in the shift mode. If so, the first combustion pattern 72B in the shift mode is set.
At this time, when the operation mode or the combustion pattern 72B is switched by the pilot, the control unit 71 updates the corresponding association data after the switching, and the operation mode and the combustion pattern 72B are updated based on the updated data. Set. According to this configuration, the user's preference can be learned and reflected automatically, and the groove sound according to the driving state can be fed back to the driver, making it easy for the driver to grasp the driving state. Become.

In each of the above embodiments, when the engine rotation becomes unstable during the change mode, the control unit 71 may be forcibly set to the normal mode.
Further, in each of the above embodiments, the combustion pattern 72B that generates a change in the cycle of the audible sound generated by the combustion engine 17 or the sensible vibration can be applied at a predetermined cycle longer than the combustion interval. By using this combustion pattern 72B, it is possible to reproduce a rhythm with fluctuations that change in a predetermined cycle, which is one of the rhythms used in the music field such as black music, which is unique to a conventional engine that cannot be obtained. The rhythm can be obtained.

  Further, in each of the above embodiments, as shown in FIG. 5, a random number generator 93 that generates a random number, and a combustion pattern generator that generates a change mode combustion pattern 72 </ b> B based on the random number generated by the random number generator 93. 94, and when the change mode is selected, the control unit 71 may generate the combustion pattern 72B by the combustion pattern generation unit 94 and control based on the combustion pattern 72B. According to this configuration, it is easy to create the combustion pattern 72B, and variations of the combustion pattern 72B can be easily increased.

  Further, in the above embodiment, in order to change the cycle of the audible sound generated by the engine 17, the throttle body 42 that is the intake air amount variable device, the injector 43 that is the fuel supply device, the ignition device 56, the variable valve device 55, Although the case where all cylinder deactivation is used has been described, the present invention is not limited to this, and any one or a plurality of combinations may be used. In addition, this type of motorcycle includes an idling speed adjusting device (not shown) for adjusting the idling speed, and an audible sound generated by the engine is controlled by the control of the idling speed adjusting device. The period of vibration may be changed. In short, any one or more of various devices used for engine control may be used to change the period of audible sound and vibration generated by the engine 17.

  Moreover, although the said embodiment demonstrated the case where the cycle of an audible sound and a vibration was changed by the motorcycle 10 alone, it is not restricted to this. For example, when a plurality of motorcycles 10 are gathered, the engine 17 of each motorcycle 10 is driven at a cycle of individual audible sounds or the like (including vibration). In this case, the control unit 71 Polyrhythm control for controlling the combustion pattern 72B in which the cycle of the audible sound generated by each engine 17 is changed to the combustion pattern 72B in which the audible sounds of all the engines 17 are synchronized with a cycle longer than the cycle of the audible sound. A portion 95 may be provided.

FIG. 6 is a diagram for explaining an example of the polyrhythm control unit 95. As shown in this figure, a polyrhythm control unit 95 is provided in all the motorcycles 10 that are gathered, and each polyrhythm control unit 95 is configured to be able to wirelessly communicate with other polyrhythm control units 95 by a wireless communication unit 96. . By this wireless communication, all the polyrhythm control units 95 in the communication area (for example, a range of several meters) establish a communication link, and any one of the polyrhythm control units 95 in the communication link functions as a host. However, the combustion pattern 72B in which the audible sound of the engine 17 of all the motorcycles 10 is synchronized with a period longer than the period of each audible sound is selected, and is distributed and set to each control unit 71 via each polyrhythm control unit 95.
In this case, the host selects a combustion pattern 72B that is different among the plurality of engines 17 and that synchronizes the maximum value of each audible sound with a period longer than the period of the audible sound of each engine 17. Thereby, it is possible to realize a composite rhythm (polyrhythm) in which a plurality of types of phrases having different rhythms are combined while including audible sounds and vibrations that synchronize with a long cycle.

  In each of the above embodiments, the case where the combustion adjustment unit 75 is controlled to change the period of audible sound generated by the engine 17 and the vibration that can be experienced is described. The combustion adjustment unit 75 may be controlled so as to change the period of the audible sound generated by the engine 17 or the sensible vibration within the range in which the effect can be produced. In each of the above embodiments, the case where the present invention is applied to the control device for the engine 17 of the motorcycle 10 shown in FIG. 1 has been described. However, the present invention is not limited to this, and the present invention is applicable to various control devices for motorcycle engines. Can be applied. Further, the present invention may be applied to an engine control device other than an engine mounted on a motorcycle.

10 Motorcycle 17 Engine 42 Throttle body (variable intake air amount)
43 Injector (fuel supply device)
55 Variable valve operating device 55A Intake valve control device 55B Exhaust valve control device 56 Ignition device 61 Intake passage 63 Throttle valve drive unit 64 Throttle opening sensor 71 Control unit (combustion control unit)
72 storage unit (combustion pattern storage unit)
73 Sensor part 75 Combustion adjustment part 77 Operation part 77A Mode changeover switch 77B Combustion pattern changeover switch 93 Random number generation part 94 Combustion pattern generation part 95 Polyrhythm control part

Claims (12)

In an engine control apparatus provided with a combustion adjustment section (75) for adjusting the combustion state of the engine (17) and a combustion control section (71) for controlling the combustion adjustment section (75),
The combustion control unit (71) is configured to change a period of audible sound generated by the engine (17) or a vibration that can be felt in a predetermined operation state of the engine (17). The engine control apparatus characterized by controlling.   The combustion control unit (71) includes a normal mode for controlling the combustion adjustment unit (75) so that the engine (17) is in a combustion state corresponding to a predetermined target operation state, and the engine (17). 2. The engine control according to claim 1, wherein the operation mode is switched between a change mode for controlling the combustion adjusting unit (75) so as to change a period of generated audible sound or sensible vibration. 3. apparatus.   The engine control device according to claim 2, further comprising a mode changeover switch (77A) for switching between the normal mode and the change mode. A combustion pattern storage unit (72) for storing a combustion pattern for changing a cycle of audible sound generated by the engine (17) or a perceivable vibration in a predetermined pattern;
The engine control device according to any one of claims 1 to 3, wherein the combustion control unit (71) controls the combustion adjustment unit (75) based on the combustion pattern.   The engine control device according to claim 4, wherein the combustion pattern includes a combustion pause of the engine (17).   The combustion pattern includes information on fuel injection and / or ignition of the engine (17), and includes information on at least one of fuel injection amount, fuel injection pause, injection timing, or ignition timing. The engine control device according to claim 4 or 5, wherein   The engine control device according to any one of claims 4 to 6, further comprising a combustion pattern switching switch (77B) for switching the combustion pattern.   The combustion control unit (71) stores the combustion pattern selected by the user for each operation state of the engine (17), and selects the combustion pattern according to the operation state of the engine (17) according to the storage. The engine control device according to claim 7, wherein:   The combustion control unit (71) controls the combustion adjustment unit (75) so as to generate a change in the cycle of audible sound generated by the engine (17) or sensible vibration at a predetermined cycle. The engine control device according to any one of claims 4 to 8, characterized in that:   A random number generation unit (93) for generating a random number and a combustion pattern generation unit (94) for generating the combustion pattern based on the random number generated by the random number generation unit (93) are provided. Item 9. The engine control device according to any one of Items 4 to 8.   The combustion adjusting unit (75) is any one of a fuel supply device (43), an ignition device (56), an intake air variable device (42), a variable valve operating device (55), a cylinder deactivation, and an idling speed adjusting device. The engine control apparatus according to any one of claims 1 to 10, wherein the engine control apparatus is one or a combination of a plurality of them.   When the plurality of engines (17) are driven with individual audible sound periods, combustion patterns in which the audible sound periods generated by the respective engines (17) change under the control of the combustion control unit (71) The polyrhythm control part (95) which controls to the combustion pattern which the audible sound of the said engine (17) synchronizes with a period longer than the period of each audible sound is provided. The engine control apparatus described in 1.

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