JP2003020976A - Controller for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily, surely, and rapidly vent air in a fuel feed system when an internal combustion engine having a return-less fuel feed system without a fuel return pipe is first started at the time of assembly and inspection in a plant. SOLUTION: In a motorcycle having the internal combustion engine 1 with the return-less fuel feed system, when ON/OFF switching a starter switch 44 is repeated specified times within a specified period before a starter is actually started to operate after a key switch 43 is turned ON, the amount of fuel injection at the time of starting is increased to first start the internal combustion engine 1 at the time of assembly and inspection in the plant requiring an air vent control for the fuel feed system ranging from a fuel tank 21 to an injector 5. By this, air in the fuel feed system of the internal combustion engine is surely and rapidly bled at the beginning of the starting to bring the starting into a start complete state in a short time. Thus, a starting time at the time of assembly and inspection of a vehicle in the plant can be shortened, and the amount of fuel injection in normal starting can be prevented from being erroneously increased in a market.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle equipped with an internal combustion engine equipped with a returnless fuel supply system that does not have a fuel return pipe from the fuel injection valve side to the fuel tank side. The present invention relates to a control device for an internal combustion engine capable of quickly bleeding air in the fuel pipe during inspection.

[0002]

2. Description of the Related Art Conventionally, when an internal combustion engine equipped with a returnless fuel supply system is mounted at the time of assembling / inspecting a vehicle at a factory, the air in the middle of the fuel pipe is injected with fuel. There was no choice but to withdraw the fuel as the fuel was injected from the valve into the cylinder of the internal combustion engine. For this reason, when starting the internal combustion engine for the first time at the time of assembling / inspecting the vehicle in the factory, the engine speed is unstable until the air escapes, and it is difficult to reach the predetermined engine speed or longer, and the starting time is usually long. there were.

[0003]

In order to deal with this,
A possible method is to increase the fuel injection amount at startup only when the electronic control unit that controls the operating condition of the internal combustion engine is turned on for the first time. As the storage means for storing the increase in the amount of the data and the completion of execution thereof, for example, an EEPROM (Electrically Erasable Program) which is a non-volatile memory.
rammable ROM) etc. are required. A method of increasing the fuel injection amount at startup by inputting an ON / OFF signal from a specific signal terminal to the electronic control unit is also conceivable, but in this case, a new signal terminal is provided to perform air bleeding control. Need to be connected to. In any case, there is a problem in that it is costly and troublesome because it is not enough to change the control program stored and executed in the electronic control unit.

Therefore, the present invention has been made to solve the above problems, and it is a vehicle equipped with an internal combustion engine equipped with a returnless fuel supply system, and the internal combustion engine is first installed at the time of assembly / inspection at a factory. An object of the present invention is to provide a control device for an internal combustion engine, which can easily and reliably remove the air in the middle of the fuel pipe at the time of starting.

[0005]

According to another aspect of the present invention, there is provided a control device for an internal combustion engine, wherein a starter for starting the internal combustion engine after the key switch is turned on is actually started within a predetermined period. When the switch is repeatedly turned on and off a predetermined number of times, the internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side is installed in the vehicle for the first start. At least one of the increase in the fuel injection amount at the start and the extension of the fuel injection period at the start as the air bleeding control for
Is performed by the fuel injection control means. As a result, when the internal combustion engine is started for the first time at the time of assembly and inspection at the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is quickly and easily evacuated at the beginning of startup, and the internal combustion engine is quickly The engine can be brought into the start-up completed state. For this reason, the start-up time at the time of assembly / inspection of the vehicle in the factory is shortened, and in the market, the erroneous increase of the fuel injection amount at the normal start and the erroneous extension of the fuel injection period at the start are prevented.

According to the control device for an internal combustion engine of claim 2,
When the clutch switch is turned on / off a predetermined number of times within a predetermined period after the key switch is turned on and before the starter that starts the internal combustion engine actually starts to operate, from the fuel injection valve side to the fuel tank side. As a venting control to cope with the first start when installing an internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe to the vehicle, it is possible to increase the fuel injection amount at start or extend the fuel injection period at start. At least one of them is executed by the fuel injection control means. As a result, when the internal combustion engine is started for the first time at the time of assembly and inspection at the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is quickly and easily evacuated at the beginning of startup, and the internal combustion engine is quickly The engine can be brought into the start-up completed state. For this reason, the start-up time during assembly / inspection of the vehicle factory is shortened, and
In the market, an erroneous increase in the normal fuel injection amount at startup and an erroneous extension of the fuel injection period at startup are prevented.

According to the control device for an internal combustion engine of claim 3,
When the accelerator operation corresponding to the predetermined throttle opening degree is repeated a predetermined number of times within a predetermined period until the starter that starts the internal combustion engine after the key switch is turned on is actually started, from the fuel injection valve side An increase in the fuel injection amount at start or a fuel injection period at start as air bleeding control to cope with the first start when installing an internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe to the fuel tank side on a vehicle Is extended by the fuel injection control means. As a result, when the internal combustion engine is started for the first time at the time of assembly and inspection at the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is quickly and easily evacuated at the beginning of startup, and the internal combustion engine is quickly The engine can be brought into the start-up completed state. For this reason, the start-up time at the time of assembly / inspection of the vehicle in the factory is shortened, and in the market, the erroneous increase of the fuel injection amount at the normal start and the erroneous extension of the fuel injection period at the start are prevented.

According to the control device for an internal combustion engine of claim 4,
When the starter switch is turned on / off for a predetermined number of times within a predetermined period after the key switch is turned on and before the starter that starts the internal combustion engine actually starts operating, from the fuel injection valve side to the fuel tank side As a venting control to cope with the first start when installing an internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe to the vehicle, it is possible to increase the fuel injection amount at start or extend the fuel injection period at start. After any one of them is executed,
Normal startup fuel injection control is executed by the fuel injection control means. As a result, when the internal combustion engine is started for the first time during the assembly / inspection of the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is first quickly and quickly evacuated, and the internal combustion engine is quickly exhausted. Can be in the start-up completed state. For this reason, the start-up time at the time of assembly / inspection of the vehicle in the factory is shortened, and in the market, the erroneous increase of the fuel injection amount at the normal start and the erroneous extension of the fuel injection period at the start are prevented.

According to the control device for an internal combustion engine of claim 5,
When the clutch switch is turned on / off a predetermined number of times within a predetermined period after the key switch is turned on and before the starter that starts the internal combustion engine actually starts to operate, from the fuel injection valve side to the fuel tank side. As a venting control to cope with the first start when installing an internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe to the vehicle, it is possible to increase the fuel injection amount at start or extend the fuel injection period at start. After any one of them is executed,
Normal startup fuel injection control is executed by the fuel injection control means. As a result, when the internal combustion engine is started for the first time during the assembly / inspection of the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is first quickly and quickly evacuated, and the internal combustion engine is quickly exhausted. Can be in the start-up completed state. For this reason, the start-up time at the time of assembly / inspection of the vehicle in the factory is shortened, and in the market, the erroneous increase of the fuel injection amount at the normal start and the erroneous extension of the fuel injection period at the start are prevented.

According to the control device for an internal combustion engine of claim 6,
When the accelerator operation corresponding to the predetermined throttle opening degree is repeated a predetermined number of times within a predetermined period until the starter that starts the internal combustion engine after the key switch is turned on is actually started, from the fuel injection valve side An increase in the fuel injection amount at start or a fuel injection period at start as air bleeding control to cope with the first start when installing an internal combustion engine equipped with a returnless fuel supply system without a fuel return pipe to the fuel tank side on a vehicle After any one of the extensions is executed, the normal start-time fuel injection control is executed by the fuel injection control means. As a result, when the internal combustion engine is started for the first time during the assembly / inspection of the vehicle factory, the air in the fuel supply system from the fuel tank to the fuel injection valve is first quickly and quickly evacuated, and the internal combustion engine is quickly exhausted. Can be in the start-up completed state. Therefore, the start-up time at the time of assembling / inspecting the vehicle at the factory is shortened, and in the market, the increase in the normal start-up fuel injection amount and the increase in the start-up fuel injection period are prevented.

In the fuel injection control means in the internal combustion engine controller according to the present invention, the internal combustion engine has a multi-cylinder configuration, and the fuel injection amount at start-up is adjusted in accordance with the inclination of the delivery pipe to which the fuel injection valve of each cylinder is connected. At least one of the increased amount and the extended amount of the fuel injection period at startup is set for each cylinder. As a result, when the internal combustion engine is started for the first time at the time of assembling / inspecting the vehicle in the factory, the air can be bleeded by driving the fuel injection valve according to the degree of air bleeding control of each cylinder of the internal combustion engine, and the internal combustion engine can be executed in a short time. Can be in the start completed state.

In the fuel injection control means in the control device for an internal combustion engine according to claim 8, the internal combustion engine has a plurality of cylinders, and the higher the position due to the inclination of the delivery pipe to which the fuel injection valve of each cylinder is connected, the higher the fuel at start-up. At least one of the increased amount of the injection amount and the extended amount of the fuel injection period at startup is set to be large. As a result, when the internal combustion engine is started for the first time at the time of assembling / inspecting the vehicle in the factory, the air can be bleeded by driving the fuel injection valve according to the degree of air bleeding control of each cylinder of the internal combustion engine, and the internal combustion engine can be executed in a short time. Can be in the start completed state.

According to another aspect of the control device for an internal combustion engine of the present invention, the delivery pipe is extended in accordance with a mounting direction or a mounting angle of the internal combustion engine on a vehicle having a plurality of cylinders. If the direction or mounting angle is known, the inclination state of the delivery pipe can be known in advance, so when starting the internal combustion engine for the first time at the time of assembly / inspection of the vehicle factory, the fuel according to the degree of air vent control of each cylinder of the internal combustion engine Suitable air bleeding can be performed by driving the injection valve.

In the control device for an internal combustion engine according to a tenth aspect, since the vehicle is a two-wheeled vehicle and the degree of air venting control of each cylinder of the internal combustion engine changes depending on the attitude holding state, it is possible to know the attitude inclination of the vehicle. When starting the internal combustion engine for the first time at the time of assembling / inspecting the vehicle in the factory, it is possible to perform suitable air bleeding control.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on Examples.

<Embodiment 1> FIG. 1 shows a second embodiment to which a control device for an internal combustion engine according to a first embodiment of the present invention is applied.
It is a schematic structure figure showing an internal-combustion engine and peripheral equipment in a wheel car.

In FIG. 1, the internal combustion engine 1 has four cycles 4
It is configured as a spark ignition type of cylinders (# 1 cylinder to # 4 cylinder), and its intake air passes through the air cleaner 2, the intake passage 3, and the throttle valve 4 from the upstream side, and an injector (fuel injection valve) in the intake passage 3 5 is mixed with the fuel injected from 5 and is distributed and supplied from the intake port 6 into each cylinder as an air-fuel mixture having a predetermined air-fuel ratio. An ignition plug 7 is provided for each cylinder in the cylinder head of the internal combustion engine 1, and a high voltage is applied from the ignition coil / igniter 8 to the ignition plug 7 of each cylinder at each ignition timing to mix the air-fuel mixture in each cylinder. Is ignited. Then, the exhaust gas after combustion passes through the exhaust passage 9 and is discharged into the atmosphere.

An intake air temperature sensor 11 is arranged in the air cleaner 2, and the intake air temperature sensor 11 detects the intake air temperature THA flowing into the air cleaner 2. Further, an intake pressure sensor 12 is arranged in the intake passage 3, and the intake pressure sensor 1
2 detects the intake pressure PM on the downstream side of the throttle valve 4. The throttle valve 4 is provided with a throttle opening sensor 13, and the throttle opening sensor 1
The throttle opening TA of the throttle valve 4 is detected by 3. A water temperature sensor 14 is arranged in the cylinder block of the internal combustion engine 1, and the water temperature sensor 14 detects the cooling water temperature THW in the internal combustion engine 1.

A crank angle sensor 15 is arranged on the crankshaft (not shown) of the internal combustion engine 1, and the engine speed NE of the internal combustion engine 1 is detected by the crank angle sensor 15.
Is detected. Further, a cam angle sensor 16 is provided on the cam shaft (not shown) of the internal combustion engine 1, and the cam angle sensor 1
The camshaft rotation angle θ2 of the internal combustion engine 1 is detected by 6. Besides this, an atmospheric pressure sensor 1 for detecting the atmospheric pressure PA
7, a side stand switch 18 for detecting a side stand signal Ss indicating a posture holding state by using a side stand (not shown) of a motorcycle and a power supply voltage sensor 19 for detecting a power supply voltage VB of a battery (not shown) are provided. There is.

On the other hand, the fuel pump 22 in the fuel tank 21
The fuel pumped up by the fuel filter 23, the pressure regulator 24, the fuel pipe 25, the delivery pipe 26.
In the order of, and distributed and supplied to the injector 5 of each cylinder. The pressure regulator 24 adjusts the fuel pressure in the delivery pipe 26 so that the pressure difference between the fuel pressure (fuel pressure) in the delivery pipe 26 and the intake pressure becomes constant.

ECU for controlling the operating state of the internal combustion engine 1
(Electronic Control Unit) 30
Is a CPU 31 as a well-known central processing unit, a ROM 32 storing a control program, and an R storing various data.
An AM33, a B / U (backup) RAM 34, and the like are configured as a logical operation circuit, and an input port 35 for inputting detection signals from the above-mentioned various sensors and various actuators such as the injector 5, the fuel pump 22 and an ignition coil / igniter Output port 36 for outputting control signal to 8
And the like via a bus 37.

Further, a starter motor 41 and a starter relay 42 which constitute a starter for starting the internal combustion engine 1.
Are connected to the battery side, and the key switch 43 and the starter switch 4 are connected in parallel to turn on / off the starter motor 41 via the starter relay 42.
"ON" by gripping 4 and clutch lever (not shown)
The clutch switch 45 which is in the state is connected to the battery side. Therefore, when the key switch 43, the starter switch 44, and the clutch switch 45 are all in the “ON” state, the starter motor 41 is supplied with the battery voltage + B via the starter relay 42 and the internal combustion engine 1 is started. Here, the key switch 43 is turned “ON”
The key switch signal is “OFF” → “ON”, the starter switch 44 is “ON”, the starter signal is “OFF” → “ON”, and the clutch switch 45 is “O”.
The clutch signal “OFF” → “ON” is input to the ECU 30 by “N”.

Next, the ECU 30 used in the internal combustion engine controller according to the first example of the embodiment of the present invention.
Based on the flow chart of FIG. 2 showing the processing procedure of the air venting control determination in the CPU 31 in the above, description will be made with reference to FIG. 7. Here, FIG. 7 is a time chart showing transition states of various control amounts and the like corresponding to the processing of FIG. Note that this air bleeding control determination routine is performed by the CPU 31 at predetermined time intervals.
Is repeatedly executed at.

In FIG. 2, it is determined in step S101 whether the starter is ON. Where starter O
N is a condition under which the starter operates, and the key switch 43 is “ON” in advance. For example, when the clutch lever (not shown) is gripped, the clutch signal from the clutch switch 45 is “ON” and the starter is The starter signal from the switch 44 is in the "ON" state. Step S1
When the determination condition of 01 is satisfied, that is, when the starter is ON (time t1 in FIG. 7), the process proceeds to step S102, and the key switch 43 is set to “ON” (time t0 in FIG. 7) within a predetermined period, for example. Within 4 [sec],
Before the starter ON determination (before time t1 in FIG. 7), it is determined whether the ON / OFF number of the starter signal from the starter switch 44 is repeatedly input a predetermined number from A to B, specifically 6 ± 1 times. (See starter signal shown in FIG. 7). When the clutch lever is gripped and the clutch is released, the starter motor 41 does not operate even if the starter switch 44 is turned "ON".
Further, as in this embodiment, the number of times the starter signal is turned ON / OFF by the starter switch 44 is determined by the key switch 43.
False detection can be reduced by detecting the number of times within a predetermined time after “ON”.

When the determination condition of step S102 is satisfied, the routine proceeds to step S103, where the start injection time increase permission flag XAPRG is set to "1" (time t1 in FIG. 7). Next, the routine proceeds to step S104, where it is determined that the engine speed NE of the internal combustion engine 1 is 600 [rpm] or more and the engine has been started (start time t2 in FIG. 7).
Is determined as a predetermined time, for example, for 30 [sec] (time t2 to time t3 in FIG. 7). When the determination condition of step S104 is not satisfied, that is, when the determination after starting has not continued for the predetermined time, this routine is repeatedly executed. When the post-startup determination does not continue for a predetermined time, the internal combustion engine 1 may fail to start up. In this case, it is necessary to repeat the operation from the beginning.

On the other hand, when the determination condition of step S101 is not satisfied, that is, when the starter is OFF, or when the determination condition of step S102 is not satisfied, that is, the starter is ON.
Turn on / off the starter signal from the starter switch 44 before
When the number of OFF times has not been input a predetermined number of times and there is no instruction to shift to the air bleeding control, or step S1
If the determination condition of 04 is satisfied, that is, if it is considered that the determination has been completed after the start for a predetermined time and the start is completed, step S1 is performed.
Move to 05. In step S105, the startup injection time increase permission flag XAPRG is reset to "0" (time t3 in FIG. 7), and then this routine ends.

Next, the ECU 30 used in the internal combustion engine controller according to the first example of the embodiment of the present invention.
A description will be given based on the flowchart of FIG. 3 showing a processing procedure of the fuel injection control at the time of starting in the CPU 31 therein. It should be noted that the fuel injection control routine at the time of starting is C every predetermined time.
It is repeatedly executed by the PU 31.

In FIG. 3, first, in step S201, the cooling water temperature THW from the water temperature sensor 14 is read. Next, the process proceeds to step S202, and the basic injection time T at startup is set.
Coolant temperature T read by AUSTA in step S201
It is calculated based on a table (not shown) using HW as a parameter. Next, the process proceeds to step S203, and the correction coefficient K is calculated. This correction coefficient K is calculated by the intake air temperature THA measured by the intake air temperature sensor 11 and the atmospheric pressure P measured by the atmospheric pressure sensor 17.
It is calculated based on a table (not shown) based on A and other loads.

Next, the routine proceeds to step S204, where it is judged by the above-mentioned air bleeding control judgment routine whether or not the startup injection time increase permission flag XAPRG is set to "1". The determination condition of step S204 is satisfied, that is, XA
When PRG = 1, the process proceeds to step S205,
It is determined whether the number of injections at startup is within a predetermined range between E and F. When the determination condition of step S205 is satisfied, the process proceeds to step S206, and the increase correction value TAPRG is calculated based on a table (not shown) using the cooling water temperature THW read in step S201 as a parameter. In this way, since the number of injections at startup is limited, even if the injection time increase permission flag XAPRG at startup is improperly set due to chattering of switches and the like,
The normal fuel injection control at the time of starting will be shifted to earlier. The increase correction value TAPRG may be a fixed value or may be integrated.

On the other hand, the determination condition of step S204 is not satisfied, that is, the startup injection time increase permission flag XAPRG.
Is still reset to "0", or when the determination condition of step S205 is not satisfied, that is, when the number of injections at startup is not within the predetermined range, the process proceeds to step S207, and the increase correction value TAPRG is "0". Is set so that it will not be reflected in the final injection time TAU described later. After the process of step S206 or step S207, the process proceeds to step S208, and the starting basic injection time TAUSTA calculated in step S202, step S203
The final injection time TAU is calculated by the following equation (1) based on the correction coefficient K calculated in step S1 and the increase correction value TAPRG calculated in step S206 or step S207, and this routine ends. Here, TV is an invalid injection time of the injector 5 which is preset depending on the power supply voltage.

[Equation 1]   TAU ← TAUSTA * K + TAPRG + TV (1)

In the above equation (1), the increase correction value TAPR
Although G is an addition term, it may be a multiplication term. At this time, if the increase correction value TAPRG is not reflected,
TAPRG = 1.0.

As described above, the control device for an internal combustion engine of this embodiment is a fuel supply system for injecting fuel from the injector (fuel injection valve) 5 to the internal combustion engine 1 mounted on the vehicle, and the fuel is supplied from the injector 5 side. A returnless fuel supply system without a fuel return pipe to the tank 21 side is provided, and a starter motor 41 for starting the internal combustion engine 1, a starter including a starter relay 42, and permission to supply power to the starter / Key switch 43 for controlling disapproval
Then, after the power supply is permitted by "ON" of the key switch 43, the starter ON is determined and the starter switch 44 is turned ON / OFF within a predetermined period (4 [sec]) until the starter is actually started to operate. A predetermined number of times (6 ±
When it is repeated once, the fuel injection control means is achieved by the CPU 31 in the ECU 30 that executes the increase of the fuel injection amount at startup as the air bleeding control for the fuel supply system from the fuel tank 21 to the injector 5. To do.

That is, when the starter switch 44 is repeatedly turned on / off a predetermined number of times within a predetermined period after the key switch 43 is turned "ON" and before the starter actually starts to operate, the starting injection time is increased. The permission flag XAPRG is set to "1", and the fuel injection amount at startup is increased as air bleeding control for coping with the first start when the internal combustion engine 1 equipped with the returnless fuel supply system is mounted on a vehicle. . As a result, when the internal combustion engine 1 is started for the first time at the time of assembling / inspecting the vehicle in the factory, the air in the fuel supply system from the fuel tank 21 to the injector 5 is reliably and quickly evacuated at the initial stage of the start of the internal combustion engine. The engine 1 can be brought into the start completion state. By such a simple operation, it is possible to shorten the starting time at the time of assembling / inspecting the vehicle in the factory, and it is possible to prevent an erroneous increase in the normal fuel injection amount at the start in the market.

Next, a description will be given based on the flowchart of FIG. 4 showing a modified example of the processing procedure of the above-mentioned air bleeding control determination. The air vent control determination routine is repeatedly executed by the CPU 31 at predetermined time intervals.

In FIG. 4, first, in step S301, it is determined whether the starter is on. Step S301
If the determination condition is satisfied, that is, if the starter ON determination is made, the process proceeds to step S302, and within a predetermined period, for example, 4 [sec] from "ON" of the key switch 43, from the starter switch 44 before the starter ON determination. It is determined whether or not the starter signal has been input ON / OFF a predetermined number of times from A to B, specifically 6 ± 1 times.

When the determination condition of step S302 is satisfied, the routine proceeds to step S303, and it is determined whether the throttle opening TA of the throttle valve 4 detected by the throttle opening sensor 13 is a predetermined opening from C to D. It When the determination condition of step S303 is satisfied, the process proceeds to step S304, and the startup injection time increase permission flag XAPRG is set to "1". Due to the addition of this throttle opening determination, the XAP may be erroneously determined in the market.
It is possible to avoid RG = 1 as much as possible.

Next, the routine proceeds to step S305, where the post-startup judgment that the engine speed NE of the internal combustion engine 1 is 600 [rpm] or more and the engine has been started continues for a predetermined time, for example, 30 [sec]. Is determined. When the determination condition of step S305 is not satisfied, that is, when the determination after starting has not been continued for the predetermined time, this routine ends. When the post-startup determination does not continue for a predetermined time, the internal combustion engine 1 may fail to start up. In this case, it is necessary to repeat the operation from the beginning.

On the other hand, when the determination condition of step S301 is not satisfied, that is, when the starter is OFF, or when the determination condition of step S302 is not satisfied, that is, the starter is ON.
Turn on / off the starter signal from the starter switch 44 before
When the number of times of turning off is not input a predetermined number of times and the instruction to shift to the air bleeding control is not instructed, or step S3
If the determination condition of 03 is not satisfied, that is, the throttle opening TA of the throttle valve 4 detected by the throttle opening sensor 13 is not within the predetermined range, or step S30
When the determination condition of 5 is satisfied, that is, when the determination after the start has continued for a predetermined time and the start is considered completed, the step S30 is performed.
Go to 6. In step S306, the startup injection time increase permission flag XAPRG is reset to "0", and then this routine ends.

In step S303, the throttle valve 4 detected by the throttle opening sensor 13 is detected.
It is determined whether the throttle opening TA is within a predetermined range between C and D. However, it may be determined whether the number of times the throttle opening TA is reached by the accelerator operation is within a predetermined number of times. . As a result, it is possible to reduce erroneous determinations in the air bleeding control determination routine. Furthermore, by changing the predetermined number range for the number of times the predetermined throttle opening TA is obtained by the accelerator operation, and by combining it with the ON / OFF number of the starter signal, the start It is possible to support a plurality of modes other than the injection time increase permission determination.

As described above, the control device for an internal combustion engine of the present modification is a fuel supply system for injecting fuel from the injector (fuel injection valve) 5 to the internal combustion engine 1 mounted on the vehicle, and the fuel is supplied from the injector 5 side. A returnless fuel supply system without a fuel return pipe to the tank 21 side is provided, and a starter motor 41 for starting the internal combustion engine 1, a starter including a starter relay 42, and permission to supply power to the starter / Key switch 43 for controlling disapproval
After the power supply is permitted by turning the key switch 43 “ON”, the accelerator operation corresponding to the predetermined throttle opening is performed within a predetermined period until it is determined that the starter is ON and the starter actually starts operating. When you are
The fuel injection control means is achieved by the CPU 31 in the ECU 30 that executes the increase of the fuel injection amount at the time of start as air bleeding control for the fuel supply system from the fuel tank 21 to the injector 5.

That is, when the accelerator operation corresponding to the predetermined throttle opening is performed within the predetermined period after the key switch 43 is turned "ON" until the start of the actual operation of the starter, the injection time at startup is increased. Permission flag X
When APRG is set to "1", the startup fuel injection amount is increased as air bleeding control for coping with the first start when the internal combustion engine 1 equipped with the returnless fuel supply system is mounted on a vehicle. As a result, when the internal combustion engine 1 is started for the first time at the time of assembling / inspecting the vehicle in the factory, the air in the fuel supply system from the fuel tank 21 to the injector 5 is reliably and quickly evacuated at the initial stage of the start of the internal combustion engine. The engine 1 can be brought into the start completion state. By such a simple operation, it is possible to shorten the starting time at the time of assembling / inspecting the vehicle in the factory, and it is possible to prevent an erroneous increase in the normal fuel injection amount at the start in the market.

Next, a description will be given based on the flowchart of FIG. 5 showing another modified example of the processing procedure of the above-mentioned air bleeding control determination. It should be noted that steps S401 and S403 to S4 other than step S402 in this modified example.
06 represents steps S301 and S303 of FIG.
Since they correspond to step S306 and have the same contents, the description thereof will be omitted. Also in this air bleeding control determination routine, it is repeatedly executed by the CPU 31 at predetermined time intervals.

In FIG. 5, in step S402, the number of ON / OFF times of the clutch signal from the clutch switch 45 before the starter ON determination is made within a predetermined period, for example, 4 [sec] from when the key switch 43 is “ON”. It is determined whether the input has been made a predetermined number of times from A to B, specifically, 6 ± 1 times. That is, this modification is different in that the determination in step S402 uses the ON / OFF count of the clutch switch 45 instead of the ON / OFF count of the starter switch 44 in step S302 of FIG. Is.

As described above, the control device for an internal combustion engine of this modification is a fuel supply system for injecting fuel from the injector (fuel injection valve) 5 to the internal combustion engine 1 mounted on the vehicle, and the fuel is supplied from the injector 5 side. A returnless fuel supply system without a fuel return pipe to the tank 21 side is provided, and a starter motor 41 for starting the internal combustion engine 1, a starter including a starter relay 42, and permission to supply power to the starter / Key switch 43 for controlling disapproval
Then, after the power supply is permitted by the "ON" of the key switch 43, the clutch switch 45 is repeatedly turned ON / OFF a predetermined number of times within a predetermined period until the starter is judged to be ON and the starter is actually started to operate. The fuel injection control means is achieved by the CPU 31 in the ECU 30 that executes the increase of the fuel injection amount at the time of start as the air bleeding control for the fuel supply system from the fuel tank 21 to the injector 5.

That is, when the ON / OFF of the clutch switch 45 is repeated a predetermined number of times within a predetermined period after the key switch 43 is turned "ON" until the starter actually starts to operate, the starting injection time is increased. The permission flag XAPRG is set to "1", and the fuel injection amount at startup is increased as air bleeding control for coping with the first start when the internal combustion engine 1 equipped with the returnless fuel supply system is mounted on a vehicle. . As a result, when the internal combustion engine 1 is started for the first time at the time of assembling / inspecting the vehicle in the factory, the air in the fuel supply system from the fuel tank 21 to the injector 5 is reliably and quickly evacuated at the initial stage of the start of the internal combustion engine. The engine 1 can be brought into the start completion state. By such a simple operation, it is possible to shorten the starting time at the time of assembling / inspecting the vehicle in the factory, and it is possible to prevent an erroneous increase in the normal fuel injection amount at the start in the market.

<Embodiment 2> FIG. 6 shows the fuel injection control at the time of starting after the air bleeding control judgment in the CPU 31 in the ECU 30 used in the control apparatus for an internal combustion engine according to the second embodiment of the present invention. It is a flow chart which shows a processing procedure. Further, FIG. 7 is a time chart showing a transition state of the injector drive signal corresponding to the processing of FIG.
The fuel is injected from the injector 5 into each cylinder in the order of # 1 cylinder → # 2 cylinder → # 4 cylinder → # 3 cylinder by the fuel injection control including the time of starting. It should be noted that the startup fuel injection control routine after the determination of the air bleeding control is performed by the CPU 3 at predetermined time intervals.
1 is repeatedly executed. Here, the internal combustion engine and its peripheral devices in the two-wheeled vehicle to which the control device for an internal combustion engine according to the present embodiment is applied are the same as those in the schematic configuration diagram of the above-described first embodiment, and a detailed description thereof will be given. Omit it. Also,
The air bleeding control determination routine has been described in the above-described first embodiment, and will be omitted.

In this embodiment, the two-wheeled vehicle is held in a posture by a side stand (not shown), and the mounted internal combustion engine 1 is composed of four horizontally arranged cylinders arranged in the left-right direction perpendicular to the traveling direction. This corresponds to the case where the delivery pipe 26 extended following the above is inclined.

In FIG. 6, first, in step S501, the cooling water temperature THW from the water temperature sensor 14 is read. Next, the process proceeds to step S502, and the basic injection time T at startup is set.
Coolant temperature T read by AUSTA in step S501
It is calculated based on a table (not shown) using HW as a parameter. Next, in step S503, the correction coefficient K is calculated. This correction coefficient K is calculated by the intake air temperature THA measured by the intake air temperature sensor 11 and the atmospheric pressure P measured by the atmospheric pressure sensor 17.
It is calculated based on a table (not shown) based on A and other loads.

Next, the routine proceeds to step S504, where it is judged by the above-mentioned air bleeding control judgment routine whether or not the startup injection time increase permission flag XAPRG is set to "1". The determination condition of step S504 is satisfied, that is,
When XAPRG = 1, the process proceeds to step S505, and the increase correction value TAPRG # α (α = 1, 2, 3, 4) for each cylinder (# 1 cylinder to # 4 cylinder) of the internal combustion engine 1 is read in step S501. The calculated cooling water temperature THW is used as a parameter and calculated based on a table (not shown).

Here, when the two-wheeled vehicle is held in the posture by the side stand (not shown), the side stand signal Ss from the side stand switch 18 is "ON", so that the delivery pipe 26 is inclined. It is understood that the higher the position due to the inclination is, the larger the increase correction value TAPRG # α is set because it is necessary to remove air. The increase correction value TAPRG
# Α may be added up every time the routine is executed,
The period during which the increase correction is maintained may be changed for each cylinder. Further, in the four cylinders of this embodiment, the # 1 cylinder and the # 4 cylinder are used.
The increase correction may be reflected only in the cylinder.

On the other hand, the determination condition of step S504 is not satisfied, that is, the startup injection time increase permission flag XAPRG.
Is being reset to "0", the process proceeds to step S506, and the increase correction value TAPRG # α is set to "0".
Is set so that it will not be reflected in the final injection time TAU # α described later. Step S505 or step S
After the process of 506, the process proceeds to step S507, and the basic injection time TAUST at the time of start calculated in step S502
A, the final injection time TA for each cylinder based on the correction coefficient K calculated in step S503 and the increase correction value TAPRG # α calculated in step S505 or step S506.
U # α is calculated by the following equation (2), and this routine ends.

[Equation 2]   TAU # α ← TAUSTA * K + TAPRG # α + TV (2)

According to the final injection time TAU # α calculated in the above-described startup fuel injection control routine, as shown in FIG. 7, the startup injection time increase permission flag XAPRG is set to "1". At the beginning of (time t1 to time t3 in FIG. 7), as represented by the injector drive signal, as the # 1 cylinder changes to the # 4 cylinder, the injection due to the increase in the injection time at start becomes longer, and The number of injections is set to increase.

After this, as shown in FIG. 7, the key switch 43 is turned off, and the key switch 43 is again turned "O".
Even if the starter is judged to be N ”and the starter is judged to be ON, there is no repeated input of ON / OFF of the starter signal a predetermined number of times immediately before, so that the fuel injection is executed at the normal starting injection time.

As described above, the fuel injection control means achieved by the CPU 31 in the ECU 30 of the internal combustion engine control apparatus of this embodiment is such that the internal combustion engine 1 has four cylinders (a plurality of cylinders # 1 to # 4). In the configuration, the amount of increase in the fuel injection amount at startup is increased for each cylinder (# 1 cylinder to # 4 cylinder) of the internal combustion engine 1 according to the inclination of the delivery pipe 26 to which the injector 5 of each cylinder is connected. It is something to set. Further, C in the ECU 30 of the control device for the internal combustion engine of the present embodiment
When the internal combustion engine 1 has a four-cylinder structure (a plurality of cylinders of # 1 cylinder to # 4 cylinder), the fuel injection control means achieved by the PU 31 is of the delivery pipe 26 to which the injector 5 of each cylinder is connected. The higher the position due to the inclination, the larger the amount of increase in the fuel injection amount at startup is set. The delivery pipe 26 of the control device for an internal combustion engine of the present embodiment is a four-cylinder vehicle (two-wheeled vehicle) of the internal combustion engine 1.
It is extended according to the mounting direction or mounting angle.

That is, depending on the inclination of the delivery pipe 26 to which the injector 5 of each cylinder of the internal combustion engine 1 mounted on the vehicle is connected, the air stored therein exists in the higher position, and therefore the position is higher. The higher the cylinder, the larger the increase in the fuel injection amount at startup is set. As a result, air is removed by driving the injectors 5 according to the degree of need of air removal control for each cylinder of the internal combustion engine 1, and the internal combustion engine 1 can be brought into a startup completion state in a short time.

<Third Embodiment> FIG. 8 shows the fuel injection control at the time of starting after the air vent control is determined by the CPU 31 in the ECU 30 used in the control apparatus for an internal combustion engine according to the third embodiment of the present invention. It is a flow chart which shows a processing procedure. Further, FIG. 9 is a time chart showing the transition state of the injector drive signal corresponding to the processing of FIG.
In the air bleeding control, fuel is injected into all cylinders at the same time. In the normal fuel injection control including at the time of starting, # 1 cylinder → # 2 cylinder → # 4
Fuel is injected from the injector 5 into each cylinder in the order of cylinder # 3 cylinder. The start-up fuel injection control routine after the air bleeding control determination is repeatedly executed by the CPU 31 at predetermined time intervals. Further, the internal combustion engine and its peripherals in the two-wheeled vehicle to which the control device for an internal combustion engine according to the present embodiment is applied are the same as those in the schematic configuration diagram of the above-described first embodiment, and detailed description thereof will be omitted. To do. Further, the air bleeding control determination routine is omitted because it has been described in the above-described first embodiment.

In this embodiment, the two-wheeled vehicle is held in a posture by a side stand (not shown), and the mounted internal combustion engine 1 is composed of four horizontally arranged cylinders arranged in the left-right direction perpendicular to the traveling direction. This corresponds to the case where the delivery pipe 26 extended following the above is inclined.

In FIG. 8, first, in step S601, it is determined whether or not the startup injection time increase permission flag XAPRG is set to "1" by the air vent control determination routine. When the determination condition of step S601 is satisfied, that is, when XAPRG = 1, step S6
02, the air vent time TAPRG # α (α = 1, 2, 3, 3) for each cylinder (# 1 cylinder to # 4 cylinder) of the internal combustion engine 1
4) is calculated based on a table (not shown).

Here, as in the case of the above-described increase correction, when the posture of the two-wheeled vehicle is held by the side stand (not shown), the side stand signal Ss from the side stand switch 18 is "ON", It can be seen that the delivery pipe 26 is inclined, and the higher the position due to the inclination, the longer the air venting time TAPRG # α is set because it is necessary to vent the air. In the four cylinders of this embodiment, the air bleeding time may be reflected only in the # 1 cylinder and the # 4 cylinder.

Next, the routine proceeds to step S603, where it is judged if the air bleeding control is completed. This determination may be executed for each cylinder. When the determination condition of step S603 is not satisfied, that is, when the air bleeding control is not completed, the process proceeds to step S604 and step S6.
Air release time TAPRG # α for each cylinder calculated in 02
Is set to the final injection time TAU # α for each cylinder, and this routine ends.

On the other hand, the determination condition of step S601 is not satisfied, that is, the startup injection time increase permission flag XAPRG.
Is reset to "0", or step S
When the determination condition of 603 is satisfied, that is, when the air bleeding control is completed, the process proceeds to step S605. Step S6
In 05, the cooling water temperature THW from the water temperature sensor 14 is read. Next, the routine proceeds to step S606, where the basic injection time TAUSTA at startup is calculated based on a table (not shown) using the cooling water temperature THW read in step S605 as a parameter.

Next, in step S607, the correction coefficient K is calculated. This correction coefficient K is determined by the intake air temperature sensor 11
Intake temperature THA by, atmospheric pressure P by atmospheric pressure sensor 17
It is calculated based on a table (not shown) based on A and other loads. Next, the process proceeds to step S608, and the starting basic injection time TAUS calculated in step S606 is calculated.
Based on TA and the correction coefficient K calculated in step S607, the final injection time TAU is calculated by the following equation (3), and this routine ends.

[Equation 3]   TAU ← TAUSTA * K + TV (3)

According to the final injection time TAU # α calculated in the above-described startup fuel injection control routine, as shown in FIG. 9, the period during which the startup injection time increase permission flag XAPRG is set to "1" At the first time (time t01 to time t02 in FIG. 9), as indicated by the injector drive signal, as the # 1 cylinder changes to the # 4 cylinder, the injection due to the increase in the injection time at start becomes longer. Will be set.

After that, as shown in FIG. 9, the key switch 43 is turned off, and the key switch 43 is again turned "O".
Even if the starter is judged to be N ”and the starter is judged to be ON, there is no repeated input of ON / OFF of the starter signal a predetermined number of times immediately before, so that the fuel injection is executed at the normal starting injection time.

As described above, the control apparatus for an internal combustion engine of the present embodiment is a fuel supply system for injecting fuel from the injector (fuel injection valve) 5 to the internal combustion engine 1 mounted on the vehicle, and the fuel is supplied from the injector 5 side. A returnless fuel supply system without a fuel return pipe to the tank 21 side is provided, and a starter motor 41 for starting the internal combustion engine 1, a starter including a starter relay 42, and permission to supply power to the starter / Key switch 43 for controlling disapproval
Then, after the power supply is permitted by the "ON" of the key switch 43, the starter ON is determined and the starter switch 44 is repeatedly turned ON / OFF a predetermined number of times within a predetermined period until the starter is actually activated. When the engine is running, at least one of increasing the starting fuel injection amount and extending the starting fuel injection period is executed as air bleeding control for the fuel supply system from the fuel tank 21 to the injector 5, and then the normal starting fuel injection control is performed. The fuel injection control means achieved by the CPU 31 in the ECU 30 that executes

That is, when the starter switch 44 is repeatedly turned ON / OFF a predetermined number of times within a predetermined period after the key switch 43 is turned "ON" and before the starter actually starts operating, the startup injection time is increased. The permission flag XAPRG is set to "1", and the fuel injection amount at startup is increased as the air vent control for coping with the first start when the internal combustion engine 1 equipped with the returnless fuel supply system is mounted on the vehicle. After that, the normal startup fuel injection control is executed. As a result, vehicle assembly and
When starting the internal combustion engine 1 for the first time during inspection, the fuel tank 2
The air entering the fuel supply system from 1 to the injector 5 is first reliably and quickly removed, and the internal combustion engine 1
Can be in the start-up completed state. By such a simple operation, it is possible to shorten the starting time at the time of assembling / inspecting the vehicle in the factory, and it is possible to prevent an erroneous increase in the normal fuel injection amount at the start in the market.

Further, the starter switch 44 of the above embodiment
ON / OFF of the clutch switch 45 ON / OFF
The fuel supply system in which fuel is injected from an injector (fuel injection valve) 5 to an internal combustion engine 1 mounted on a vehicle, and the fuel tank 2 is connected to the fuel tank 2 from the injector 5 side.
A returnless fuel supply system without a fuel return pipe to the first side, which includes a starter motor 41 for starting the internal combustion engine 1 and a starter relay 42, and permission / non-permission of power supply to the starter. After the power supply is permitted by the key switch 43 for controlling permission and “ON” of the key switch 43, the starter is judged to be ON and the clutch switch 45 is turned ON / OFF within a predetermined period until the starter is actually started. When OFF is repeated a predetermined number of times, at least one of increasing the fuel injection amount at startup or extending the fuel injection period at startup is executed as air bleeding control for the fuel supply system from the fuel tank 21 to the injector 5. Fuel injection control achieved by the CPU 31 in the ECU 30 that executes normal startup fuel injection control It shall be equipped with a stage, it is possible to obtain the same effects.

Then, the starter switch 4 of the above embodiment
In the case where the ON / OFF of 4 is replaced with an accelerator operation corresponding to a predetermined throttle opening, a fuel supply system for injecting fuel from an injector (fuel injection valve) 5 to an internal combustion engine 1 mounted on a vehicle is used. , A returnless fuel supply system without a fuel return pipe from the injector 5 side to the fuel tank 21 side, wherein a starter motor 41 for starting the internal combustion engine 1 and a starter including a starter relay 42 and the starter are provided. After the key switch 43 for controlling permission / non-permission of power supply of the power switch is turned on and the power supply is turned on by turning the key switch 43 “ON”, the starter O
When the accelerator operation corresponding to the predetermined throttle opening is repeated a predetermined number of times within a predetermined period until it is determined N and the starter is actually started, the fuel tank 21
As the air bleeding control for the fuel supply system from the fuel injection system to the injector 5, at least one of increasing the fuel injection amount at startup or extending the fuel injection period at startup is executed, and then the ECU 30 in the ECU 30 that executes normal fuel injection control at startup is executed. CP
Since the fuel injection control means achieved in U31 is provided, the same operation / effect can be obtained.

Further, E of the control device for the internal combustion engine of this embodiment is
The fuel injection control means achieved by the CPU 31 in the CU 30 is such that when the internal combustion engine 1 has a four-cylinder (a plurality of # 1 to # 4 cylinders) configuration, the injector 5 of each cylinder is used.
Depending on the inclination of the delivery pipe 26 connected to
At least one of the increased amount of the fuel injection amount at startup and the extended amount of the fuel injection period at startup is used for the cylinder (# 1
(Cylinder to # 4 cylinder). Further, the CPU 31 in the ECU 30 of the control device for the internal combustion engine of the present embodiment
When the internal combustion engine 1 has a four-cylinder (a plurality of cylinders # 1 to # 4 cylinder) configuration,
At least one of the increase amount of the fuel injection amount at the start and the extension amount of the fuel injection period at the start is set to be larger for the cylinder having a higher position due to the inclination of the delivery pipe 26 to which the injector 5 of each of the cylinders is connected. Is. The delivery pipe 26 of the control device for an internal combustion engine of the present embodiment is extended in accordance with the mounting direction or mounting angle of the internal combustion engine 1 in a four-cylinder vehicle (two-wheeled vehicle).

That is, depending on the inclination state of the delivery pipe 26 to which the injector 5 of each cylinder of the internal combustion engine 1 mounted on the vehicle is connected, the air stored therein exists in the higher position, so that the position is higher. The higher the cylinder, the larger the amount of increase in the fuel injection amount at startup or the amount of extension of the fuel injection period at startup is set to be larger. As a result, air is removed by driving the injectors 5 according to the degree of need of air removal control for each cylinder of the internal combustion engine 1, and the internal combustion engine 1 can be brought into a startup completion state in a short time.

By the way, in the above-mentioned embodiments and modifications, the application to the two-wheeled vehicle has been described. However, the present invention is not limited to this and it is a four-wheeled vehicle. Can be similarly applied. In a four-wheeled vehicle, the key switch and starter switch in a two-wheeled vehicle are integrally configured as an ignition switch, so the switch operation is somewhat difficult, but the ignition switch is in the "START" position (starter). The same air bleeding control is executed when the operation is repeated a predetermined number of times from the “ACC (accessory)” position to the “ON” position (corresponding to “ON” of the starter switch) until it is determined to be ON determination). You should do so. In the case of a four-wheeled vehicle, the delivery pipe is not normally installed so as to be inclined. Therefore, the delivery pipe may be installed by increasing the fuel injection amount at startup or by extending the fuel injection period at startup in the fuel injection control at startup. No cylinder-by-cylinder settings to deal with tilting are required.

[Brief description of drawings]

FIG. 1 is a block diagram of a control device for an internal combustion engine 2 according to a first embodiment to a third embodiment of the present invention.
It is a schematic structure figure showing an internal-combustion engine and peripheral equipment in a wheel car.

FIG. 2 is a flowchart showing a processing procedure of air bleeding control in a CPU in an ECU used in a control device for an internal combustion engine according to first to third examples of an embodiment of the present invention. .

FIG. 3 is a C in an ECU used in a control device for an internal combustion engine according to a first example of an embodiment of the present invention.
It is a flow chart which shows the processing procedure of fuel injection control at the time of starting in PU.

FIG. 4 is a flowchart showing a modification of the processing procedure of the air venting control of FIG.

FIG. 5 is a flowchart showing another modified example of the processing procedure of the air venting control of FIG.

FIG. 6 is a C in an ECU used in a control device for an internal combustion engine according to a second example of the embodiment of the present invention.
6 is a flowchart showing a processing procedure of a fuel injection control at the time of starting after determination of an air bleeding control in a PU.

7 is a time chart showing transition states of various control amounts and the like corresponding to the process of FIG. 2 and injector drive signals corresponding to the process of FIG.

FIG. 8 is a C in an ECU used in a control device for an internal combustion engine according to a third example of the embodiment of the present invention.
6 is a flowchart showing a processing procedure of a fuel injection control at the time of starting after determination of an air bleeding control in a PU.

9 is a time chart showing transition states of various control amounts and injector drive signals corresponding to the processing of FIG.

[Explanation of symbols]

1 Internal combustion engine 5 injector (fuel injection valve) 21 Fuel tank 26 Delivery pipe 30 ECU (electronic control unit) 41 Starter motor 42 Starter relay 43 key switch 44 Starter switch 45 clutch switch

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F02M 37/00 321 F02M 37/00 321B 37/20 37/20 R F02N 17/08 F02N 17/08 F

Claims (10)

[Claims] 1. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. The starter switch is turned on / off within a predetermined period until it is judged to be on and the starter is actually started.
When the off state is repeated a predetermined number of times, at least one of increasing the fuel injection amount at the start and extending the fuel injection period at the start is executed as air bleeding control for the fuel supply system from the fuel tank to the fuel injection valve. A control device for an internal combustion engine, comprising: a fuel injection control means. 2. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. The clutch switch is turned on / off within a predetermined period until it is judged to be on and the starter is actually started to operate.
When the off state is repeated a predetermined number of times, at least one of increasing the fuel injection amount at the start and extending the fuel injection period at the start is executed as air bleeding control for the fuel supply system from the fuel tank to the fuel injection valve. A control device for an internal combustion engine, comprising: a fuel injection control means. 3. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. When the accelerator operation corresponding to the predetermined throttle opening is repeated a predetermined number of times within a predetermined period until it is determined to be ON and the starter is actually started,
Fuel injection control means for executing at least one of increasing the fuel injection amount at startup or extending the fuel injection period at startup as air bleeding control for the fuel supply system from the fuel tank to the fuel injection valve. A characteristic control device for an internal combustion engine. 4. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. The starter switch is turned on / off within a predetermined period until it is judged to be on and the starter is actually started.
When the off state is repeated a predetermined number of times, either one of the increase in the fuel injection amount at the start and the extension of the fuel injection period at the start is executed as the air bleeding control for the fuel supply system from the fuel tank to the fuel injection valve. Then, a control device for an internal combustion engine, comprising: a fuel injection control means for executing a normal fuel injection control at startup. 5. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. The clutch switch is turned on / off within a predetermined period until it is judged to be on and the starter is actually started to operate.
When the off state is repeated a predetermined number of times, either one of the increase in the fuel injection amount at the start and the extension of the fuel injection period at the start is executed as the air bleeding control for the fuel supply system from the fuel tank to the fuel injection valve. Then, a control device for an internal combustion engine, comprising: a fuel injection control means for executing a normal fuel injection control at startup. 6. A fuel supply system for injecting fuel from a fuel injection valve to an internal combustion engine mounted on a vehicle, comprising a returnless fuel supply system without a fuel return pipe from the fuel injection valve side to the fuel tank side. In a control device for an internal combustion engine, a starter for starting the internal combustion engine, a key switch for controlling permission / non-permission of power supply to the starter, and a starter after power supply is permitted by turning on the key switch. When the accelerator operation corresponding to the predetermined throttle opening is repeated a predetermined number of times within a predetermined period until it is determined to be ON and the starter is actually started,
After performing either one of the increase in the fuel injection amount at startup or the extension of the fuel injection period at startup as the air venting control for the fuel supply system from the fuel tank to the fuel injection valve, the normal fuel injection control at startup is performed. A control device for an internal combustion engine, comprising: 7. The fuel injection control means, when the internal combustion engine has a plurality of cylinders, according to the inclination of a delivery pipe to which the fuel injection valve of each cylinder is connected,
7. At least one of the increased amount of the fuel injection amount at the time of starting and the extended amount of the fuel injection period at the time of starting is set for each cylinder of the internal combustion engine, according to claim 1. A control device for an internal combustion engine as described. 8. The fuel injection control means, when the internal combustion engine has a plurality of cylinders, the starting fuel is increased as the position of the cylinder due to the inclination of the delivery pipe to which the fuel injection valve of each cylinder is connected increases. 7. The control device for an internal combustion engine according to claim 1, wherein at least one of the increased amount of the injection amount and the extended amount of the fuel injection period at startup is set to be large. 9. The internal combustion engine according to claim 7, wherein the delivery pipe is extended along the mounting direction or mounting angle of the plurality of cylinders of the internal combustion engine in the vehicle. Engine control device. 10. The control device for an internal combustion engine according to claim 1, wherein the vehicle is a two-wheeled vehicle.