JP4835495B2 - Lighting control method for automobiles and maintenance warning lights - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an automobile and a maintenance warning lamp lighting control method, and more particularly, to an automobile equipped with an internal combustion engine and maintenance for turning on or off a maintenance warning lamp that prompts execution of maintenance of a fuel injection system of the internal combustion engine in such an automobile. The present invention relates to a warning light lighting control method.

Conventionally, based on an injection amount error that is a difference between an ISC injection amount that is a fuel injection amount when an internal combustion engine is performing idle speed control and an actual injection amount that is based on a detection result of a pressure sensor at the time of fuel injection. There has been proposed a fuel injection device deterioration diagnosis device that diagnoses deterioration of a fuel injection device over time (see, for example, Patent Document 1). In this device, when the injection amount error is diagnosed to be greater than or equal to the reference, it is determined that the fuel injection device has deteriorated with time, and the warning lamp is turned on.
JP-A-6-272600

  In a vehicle equipped with a fuel injection device deterioration diagnosis device such as the fuel injection device deterioration diagnosis device described above, a warning lamp attached to an instrument panel or the like is turned on when the fuel injection device deterioration is determined. However, if the warning lamp can be easily turned off by the user, it is troublesome to bring it to a maintenance shop or the like to perform maintenance on the fuel injection device. There is a case where the warning lamp is turned off and the use is continued. In this case, since the fuel injection amount is not properly performed, the emission is deteriorated or a failure occurs in the internal combustion engine.

  An object of the lighting control method for an automobile and a maintenance warning light according to the present invention is to promote execution of maintenance of a fuel injection system of an internal combustion engine. In addition, the lighting control method for an automobile and a maintenance warning lamp according to the present invention suppresses inconveniences caused by maintenance of the fuel injection system of the internal combustion engine, for example, worsening of emissions and failure of the internal combustion engine. One of the purposes.

  The vehicle and the maintenance warning lamp lighting control method of the present invention adopt the following means in order to achieve at least a part of the above-described object.

The automobile of the present invention
An automobile equipped with an internal combustion engine,
Maintenance promotion warning means for turning on a maintenance warning lamp for urging execution of maintenance of the fuel injection system of the internal combustion engine when a predetermined elapsed counter reaches a predetermined value or more;
When a predetermined operation different from an operation performed for running while the maintenance warning light is on is reset, the predetermined progress counter is reset to an initial value and the maintenance warning light is turned off. Reset extinguishing means to
It is a summary to provide.

  In the automobile according to the present invention, when a predetermined elapsed counter reaches a predetermined value or more, a maintenance warning lamp for urging execution of maintenance of the fuel injection system of the internal combustion engine is turned on. When a predetermined operation different from the operation performed for traveling is performed while the maintenance warning light is on, the predetermined progress counter is reset to the initial value and the maintenance warning light is turned off. . As a result, the maintenance warning light cannot be easily turned off by the user, and the vehicle is brought to a maintenance shop or the like where maintenance of the fuel injection system of the internal combustion engine can be performed to turn off the maintenance warning light. Can be encouraged. As a result, it is possible to promote the maintenance of the fuel injection system of the internal combustion engine, and inconveniences that occur because the maintenance of the fuel injection system of the internal combustion engine is not performed (for example, inconveniences such as worsening of emission or failure of the internal combustion engine). Can be suppressed.

  In the automobile according to the present invention, the predetermined operation can travel as the first operation when the vehicle cannot be traveled as a system state of the vehicle, and as the system state of the vehicle. It can also be an operation including a second operation within a predetermined time after the travelable system state. In this case, the first operation may be a plurality of shift operations between the parking position and the neutral position, and the second operation may be a plurality of accelerator operations at the parking position. In addition, a start switch for toggling between the three states of accessory on, ignition on, and system off as the vehicle system state, and when the start switch is operated in the brake on state, the vehicle system state is changed to the ready on state. And a system starting means that performs the operation, the non-runnable system state is ready-off and an ignition-on state, and the runnable system state is a ready-on state.

  In the automobile of the present invention, the predetermined elapsed counter may be an integrated value or an elapsed time of a travel distance after being reset.

The lighting control method of the maintenance warning light of the present invention,
A maintenance warning light lighting control method for turning on or off a maintenance warning light that prompts execution of maintenance of the fuel injection system of the internal combustion engine in an automobile equipped with the internal combustion engine,
The maintenance warning light is turned on when a predetermined elapsed counter reaches a predetermined value or more, and a predetermined operation different from an operation performed for traveling is performed while the maintenance warning light is on. Sometimes resetting the predetermined elapsed counter to an initial value and turning off the maintenance warning light,
It is characterized by that.

  In the maintenance warning light lighting control method according to the present invention, the maintenance warning light is turned on when a predetermined elapsed counter reaches a predetermined value or more, and the maintenance warning light is turned on for traveling. When a predetermined operation different from the operation is performed, a predetermined elapsed counter is reset to an initial value and the maintenance warning lamp is turned off. As a result, the maintenance warning light cannot be easily turned off by the user, and the vehicle is brought to a maintenance shop or the like where maintenance of the fuel injection system of the internal combustion engine can be performed to turn off the maintenance warning light. Can be encouraged. As a result, it is possible to promote the maintenance of the fuel injection system of the internal combustion engine, and inconveniences that occur because the maintenance of the fuel injection system of the internal combustion engine is not performed (for example, inconveniences such as worsening of emission or failure of the internal combustion engine). Can be suppressed.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a hybrid vehicle 20 as an embodiment of the present invention. In the hybrid vehicle 20 of the embodiment, a carrier is connected to an engine 32, an engine electronic control unit (hereinafter referred to as an engine ECU) 36 that controls the operation of the engine 32, and a crankshaft 34 of the engine 32, and driving wheels. A planetary gear mechanism 38 in which a ring gear is coupled to a drive shaft 22 connected to the drive shaft 22 through the differential gear 24, a motor 40 capable of generating power connected to the sun gear of the planetary gear mechanism 38, and the drive shaft 22 A motor 41 capable of generating and outputting power, inverters 42 and 43 as drive circuits for the motors 40 and 41, and a power source connected to the inverters 42 and 43 and other auxiliary machines 48 via a system main relay 46 As a high-voltage battery 44 and a vehicle that controls the entire vehicle. Brides electronic control unit comprises a (hereinafter, referred to. HVECU) 50, a power supply electronic control unit that functions as an activation control apparatus of the vehicle (hereinafter, referred to as the power supply ECU.) 60.

  As shown in FIG. 2, the engine 32 includes a port fuel injection valve 126a for injecting hydrocarbon-based fuel such as gasoline and light oil into an intake port and an in-cylinder fuel injection valve 126b for injecting fuel directly into the cylinder. It is comprised as an internal combustion engine provided. The engine 32 is provided with these two fuel injection valves 126a and 126b, so that the air cleaned by the air cleaner 122 is sucked through the throttle valve 124 and gasoline is injected from the port fuel injection valve 126a. Air and gasoline are mixed, the mixture is sucked into the combustion chamber via the intake valve 128, and is exploded and burned by an electric spark by the spark plug 130. The reciprocating motion of the piston 132 pushed down by the energy is applied to the crankshaft 34. In the same manner as the port injection drive mode for converting to the rotational movement of the air, the air is sucked into the combustion chamber, and the fuel is injected from the in-cylinder fuel injection valve 126b in the middle of the intake stroke or the compression stroke. Crankshaft exploding and burning by electric sparks In-cylinder injection drive mode in which the rotational movement of 34 is obtained, and when air is burned into the combustion chamber, fuel is injected from the port fuel injection valve 126a, and fuel is injected from the in-cylinder fuel injection valve 126b in the intake stroke and the compression stroke. Thus, the operation is controlled in one of the common injection drive modes for obtaining the rotational motion of the crankshaft 34. These drive modes are switched based on the operation state of the engine 32, the operation state required for the engine 32, and the like. Exhaust gas from the engine 32 is discharged to the outside air through a purification device (three-way catalyst) 134 that purifies harmful components such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). .

  The engine ECU 36 is configured as a microprocessor centered on the CPU 36a, and includes, in addition to the CPU 36a, a ROM 36b for storing a processing program, a RAM 36c for temporarily storing data, an input / output port and a communication port (not shown). . The engine ECU 36 includes signals from various sensors that detect the state of the engine 32, a crank position from the crank position sensor 140 that detects the rotational position of the crankshaft 34, and a water temperature sensor 142 that detects the temperature of cooling water in the engine 32. From the cooling water temperature from the combustion chamber, the in-cylinder pressure Pin from the pressure sensor 143 installed in the combustion chamber, the intake valve 128 that performs intake and exhaust to the combustion chamber, and the cam position sensor 144 that detects the rotational position of the camshaft that opens and closes the exhaust valve , The throttle position from the throttle valve position sensor 146 for detecting the position of the throttle valve 124, the air flow meter signal from the air flow meter 148 attached to the intake pipe, and the temperature sensor 14 also attached to the intake pipe Intake air temperature from the air-fuel ratio from an air-fuel ratio sensor 135a, such as oxygen signal from an oxygen sensor 135b is input via the input port. Further, the engine ECU 36 controls various control signals for driving the engine 32, for example, a drive signal for the port fuel injection valve 126a and the in-cylinder fuel injection valve 126b, and a throttle for adjusting the position of the throttle valve 124. A drive signal to the motor 136, a control signal to the ignition coil 138 integrated with the igniter, a control signal to the variable valve timing mechanism 150 capable of changing the opening / closing timing of the intake valve 128, and the like are output via the output port. Yes. The engine ECU 36 communicates with the hybrid electronic control unit 50, controls the operation of the engine 32 by a control signal from the hybrid electronic control unit 50, and outputs data related to the operating state of the engine 32 as necessary. .

  The HVECU 50 is configured as a microcomputer centered on the CPU 50a, and includes a ROM 50b for storing a processing program, a RAM 50c for temporarily storing data, an input / output port and a communication port (not shown), in addition to the CPU 50a. The HVECU 50 includes a rotation position from a rotation position detection sensor (not shown) that detects the rotation position of the rotor of the motors 40 and 41, and a current sensor (not shown) attached to the power line from the inverters 42 and 43 to the motors 41 and 42. Detects phase current, output voltage and output current from a voltage sensor and current sensor (not shown) installed near the output terminal of the high-voltage battery 44, battery temperature from the temperature sensor attached to the high-voltage battery 44, and shift lever operating position The shift position from the shift position sensor 52, the accelerator opening from the accelerator pedal position sensor 54 that detects the depression amount of the accelerator pedal, the brake pedal position from the brake pedal position sensor that detects the depression amount of the brake pedal, and the vehicle speed sensor Et vehicle speed, data from various sensors, such as the travel distance from the odometer 58 is input via the input port. Further, the HVECU 50 outputs a switching signal to the inverters 42 and 43, a driving signal to the auxiliary machine 48, a lighting signal and a light-off signal to the maintenance warning lamp 56 incorporated in the installation panel in front of the driver's seat. . The HVECU 50 is connected to the engine ECU 36 via a communication port, and receives detection signals from various sensors attached to the engine 32 from the engine ECU 36 and calculation results calculated based on the detection signals as necessary. In addition, a control signal is output to the engine ECU 36 as a command for controlling the operation of the engine 32. The HVECU 50 is connected to the power supply ECU 60 via a communication port, and receives an ignition signal (IG signal), a start signal (ST signal), and the like from the power supply ECU 60 and a ready signal (READY) indicating an activation state to the power supply ECU 60. Signal).

  The HVECU 50 calculates the required torque to be output to the drive shaft 22 based on the accelerator opening and the vehicle speed obtained by detecting the accelerator pedal depression amount by the accelerator pedal position sensor 54, and responds to this required torque. And the operating point of the engine 32 is calculated so that the remaining capacity (SOC) of the high voltage battery 44 is within a predetermined range and the engine 32 is efficiently operated. The torque commands of the motors 40 and 41 are calculated, and the operation points of the engine 32 are output to the engine ECU 36 to cause the engine ECU 36 to control the operation of the engine 32. The torque commands of the motors 40 and 41 are torques corresponding to the torque commands. Is output from the motors 40 and 41. And it outputs a switching signal to the inverter 42, 43 drives and controls the motors 40 and 41. Since such drive control does not form the core of the present invention, further detailed explanation is omitted.

  The power supply ECU 60 is configured as a microcomputer centering on a CPU (not shown), and includes a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, a communication port, and the like in addition to the CPU. A push signal from a power switch 62 attached to the front panel of the driver's seat, a brake switch signal from a brake switch 64 that detects depression of a brake pedal (not shown), and the like are input to the power supply ECU 60 via an input port. . The power supply ECU 60 outputs a drive signal to the system main relay 46, a lighting signal to the indicator 63 built in the power switch 62, and the like via an output port. As described above, the power supply ECU 60 is connected to the HVECU 50 via the communication port. Based on a push signal from the power switch 62, a brake switch signal from the brake switch 64, and the like, It controls the interruption (ON / OFF of the system main relay 46) and the system activation.

  The power supply ECU 60 turns on an accessory that connects a battery (not shown) serving as a low-voltage power source to the system each time a short-push push signal is pressed by the power switch 62 for less than a predetermined time (for example, less than 3 seconds). (ACCON), ignition on (IGON) for connecting a high voltage battery 44 as a high voltage power source by a system main relay 46, connection of a high voltage battery 44 as a low voltage power source or a high voltage power source Control is performed so that each of the ignition-off (IGOFF) states that are canceled and the system is stopped is repeated in this order. Of these, the ignition on and the ignition off are output as an ignition signal (IG signal) to the HVECU 50 and a drive signal as an on / off signal is output to the system main relay 46. That is, when the power switch 62 is pressed with the accessory turned on, the power supply ECU 60 turns on the HVECU 50 as an IG signal and outputs an on signal to the system main relay 46 to turn on the power to the high voltage system and turn on the ignition. When the power switch 62 is pushed in this state, an IG signal is output to the HVECU 50 and an off signal is output to the system main relay 46 to shut off the power supply from the high voltage system. The power supply ECU 60 lights an indicator 63 incorporated in the power switch 62 in order to notify the driver of each of these states. In the embodiment, the indicator 63 is turned off when the entire vehicle is in an off state (IGOFF), turned off when the accessory is turned on (ACCON), lit orange when the ignition is turned on (IGON), turned off when the system is started, It is blinking orange.

  The system is activated by the power supply ECU 60 when a push signal is input to the power supply ECU 60 by pressing the power switch 62 with the brake switch signal from the brake switch 64 turned on, that is, with the driver stepping on the brake pedal. This is performed by executing a startup process (not shown). In the startup process, the power supply ECU 60 outputs an ON signal to the system main relay 46 and also outputs an ignition signal (IG signal) and a start signal (ST signal) to the HVECU 50. The HVECU 50 that has received the ON output ignition signal (IG signal) and start signal (ST signal) executes an initial process for confirming whether or not the system is in a startable state, so that the system can be started up. If the system cannot be confirmed, the system is not started and the ready signal (READY signal) is not turned on, the ready-off state is maintained, the system startup process is terminated, and the system is ready for startup. Can be confirmed, the ready signal (READY signal) is turned on and the engine 32 is started as required to bring the system into a start-up state, that is, ready-on (READYON). The power supply ECU 60 confirms that it is ready-on (READYON) based on the ready signal (READY signal) output from the HVECU 50, turns off the indicator 63 to indicate system activation, and ends the activation process.

  The HVECU 50 of the hybrid vehicle 20 of the embodiment configured in this way inputs and accumulates the travel distance from the odometer 58, stores the travel distance integrated value in a predetermined area of the RAM 50c, and the travel distance integrated value is predetermined. Since it is necessary to properly operate the port fuel injection valve 126a and the in-cylinder fuel injection valve 126b of the engine 32 when a distance (for example, 10,000 km) is reached, the injector maintenance liquid for adding the injector cleaning liquid to the fuel is required. A maintenance warning lamp 56 is lit to urge execution. Hereinafter, processing for turning off the lit maintenance warning lamp 56 will be described.

  FIG. 3 is a flowchart showing an example of a warning lamp extinction premise processing routine executed by the HVECU 50. This routine is repeatedly executed every predetermined time (for example, every several milliseconds) while the maintenance warning lamp 56 is lit. When the warning lamp extinction premise routine is executed, the CPU 50a of the HVECU 50 first determines whether or not the ignition is on (IGON) and ready off (READYOFF) (steps S100 and S110). When the ignition is off (IGOFF) or ready on (READYON), the counter C1 is reset to 0 (step S120), and this routine is terminated. On the other hand, when the ignition is on (IGON) and ready off (READYOFF), it is determined whether or not the shift position SP from the shift position sensor 52 has been operated from the parking position (P position) to the neutral position (N position). (Step S130) When the shift operation from the P position to the N position is not performed, this routine is finished. When the shift operation from the P position to the N position is being performed, the counter C1 is incremented by 1 (step S140), and it is determined whether the incremented counter C1 matches the set value C1set (step S150). Here, the set value C1set sets the number of times of shifting from the P position to the N position in a state where the ignition is on (IGON) and ready off (READYOFF). Can be used. When the counter C1 does not match the set value C1set, this routine is terminated. When the counter C1 matches the set value C1set, the warning lamp extinguishing flag F is set to 1 (step S160), and this routine is executed. finish. In this warning light extinction premise processing routine, a plurality of shift operations from the P position to the N position are performed in a state in which the ignition is on (IGON) and ready off (READYOFF), that is, the vehicle cannot be driven as a system state. The value 1 is set to the warning lamp extinguishing flag F by performing it over the set times (set value C1set). Even when the ignition is on (IGON) and ready off (READYOFF), a shift operation from the P position to the N position is performed and the counter C1 is incremented by 1. The counter C1 matches the set value C1set. When the ignition is turned off (IGOFF) or ready on (READYON) before the operation, the counter C1 is reset to 0 in step S120, so that the warning lamp extinguishing flag F is not set to 1.

  FIG. 4 is a flowchart showing an example of a warning lamp initialization process routine executed by the HVECU 50. This routine is repeatedly executed every predetermined time (for example, every several milliseconds) while the maintenance warning lamp 56 is lit. When the warning lamp initialization process routine is executed, the CPU 50a of the HVECU 50 first determines whether or not the warning lamp extinguishing flag F is 1 (step S200) and whether or not it is ready (READYON) (step S210). Whether or not the shift position is the P position (step S230) and whether or not it is within a predetermined time (for example, 60 seconds or 100 seconds) after being in the READYON state (step S240). It is determined that the warning lamp extinguishing flag F has a value of 0, even if the warning lamp extinguishing flag F is a value of 1, it is ready-off (READYOFF), the warning lamp extinguishing flag F has a value of 1, and ready-on (READYON). Even if it is not the P position, the warning lamp extinguishing flag F is a value 1 and is ready (READYON). There and when from the state of the ready-on even the P position (READYON) has passed a predetermined time, the counter C2 with the value 0 reset (step S250), and terminates this routine. On the other hand, when the warning lamp extinguishing flag F is 1 and is ready (READYON), and is in the P position and within a predetermined time from the ready on (READYON) state, the accelerator position sensor 54 Based on the opening degree, it is determined whether or not an operation from the accelerator-off to the accelerator-on has been performed (step S260). When the operation from the accelerator-off to the accelerator-on is not performed, this routine is finished. When an operation from accelerator-off to accelerator-on is performed, the counter C2 is incremented by 1 (step S270), and it is determined whether the incremented counter C2 matches the set value C2set (step S280). Here, the set value C2set has the warning light extinguishing flag F of the value 1, is in the ready state (READYON), is in the P position, and the accelerator is turned off within a predetermined time after being in the ready state (READYON). The number of times of operation from accelerator to accelerator on is set. For example, value 3 or value 4 can be used. When the counter C2 does not match the set value C2set, this routine is terminated. When the counter C2 matches the set value C2set, the maintenance warning lamp 56 is turned off and the accumulated travel distance stored in a predetermined area of the RAM 50c is accumulated. The value is reset to 0 (step S290), and this routine ends. In this warning lamp initialization processing routine, the warning lamp extinguishing flag F has a value of 1 and is ready (READYON), is in the P position, and is in a predetermined time after becoming ready (READYON). The maintenance warning lamp 56 is obtained by performing the operation from the accelerator off to the accelerator on a plurality of times (set value C2set) in the state of the P position within a predetermined time after the vehicle can be driven as the system state. Is turned off and the integrated value of the travel distance stored in a predetermined area of the RAM 50c is reset to 0. The warning light extinguishing flag F is 1 and is ready (READYON), and is in the P position, and the operation from the accelerator off to the accelerator on is performed within a predetermined time from the ready on (READYON) state. Even if the counter C2 is incremented by the value 1, the counter C2 is ready-off (READYOFF) before the counter C2 matches the set value C2set, a shift operation from the P position to another position is performed, or the ready-on (READYON) When the predetermined time has elapsed since the state of, the counter C2 is reset to a value of 0 in step S250, so that the maintenance warning lamp 56 is not turned off and the integrated value of the travel distance is not reset to a value of 0.

  The maintenance warning lamp 56 is turned off and the integrated value of the travel distance is reset to 0. The warning lamp extinction premise process described above, that is, the shift from the P position to the N position in a state where the vehicle cannot be driven as the system state. By performing the operation a plurality of times (setting value C1set), it is possible to travel as a warning lamp initialization process, that is, as a system state of the vehicle, on the premise that a value 1 is set to the warning lamp extinction flag F. This is executed by performing an operation from the accelerator off to the accelerator on a plurality of times (set value C2set) in the state of the P position within a predetermined time after setting the state. These operations are different from the operations performed for normal traveling. As described above, the maintenance warning lamp 56 is turned off by performing an operation different from the operation performed for normal traveling, or the integrated value of the travel distance is reset to 0, so that the user can easily perform the maintenance warning. It is possible to prevent the lamp 56 from being turned off.

  According to the hybrid vehicle 20 of the embodiment described above, when the maintenance warning light 56 is lit, the vehicle is running as an ignition-on (IGON) and a ready-off (READYOFF) state (that is, as a vehicle system state). When the shift operation from the P position to the N position is performed a plurality of times (set value C1set) in the state in which the warning lamp turn-off flag F is set to the value 1. Within a predetermined time after being in the READYON state and being in the P position and being in the READYON state (that is, within a predetermined time after being able to run as a vehicle system state) From accelerator off to accelerator on (with P position) By performing the operation over a plurality of times (set value C2set), the maintenance warning lamp 56 is turned off and the integrated value of the travel distance stored in the predetermined area of the RAM 50c is reset to 0, so that the user can easily perform maintenance. The warning light 56 cannot be turned off. For this reason, in order to turn off the maintenance warning lamp 56, it can be urged to bring the vehicle to a maintenance shop or the like that can perform injector maintenance. As a result, the execution of the injector maintenance can be promoted, and inconveniences caused by not performing the injector maintenance, for example, inconveniences such as the deterioration of the emission and the failure of the engine 32 can be suppressed.

  In the hybrid vehicle 20 of the embodiment, when the maintenance warning light 56 is lit, the shift operation from the P position to the N position is performed a plurality of times in a state where the ignition is on (IGON) and the ready is off (READYOFF). As a result, the warning light extinguishing flag F is set to a value of 1, the warning lamp extinguishing flag F is set to the value 1, is ready (READYON), is in the P position, and is ready (READYON). The maintenance warning lamp 56 is turned off and the integrated value of the travel distance stored in a predetermined area of the RAM 50c is reset to a value 0 by performing the operation from the accelerator off to the accelerator on a plurality of times within a predetermined time from As a precondition process for turning off the warning light, Ignition The warning lamp extinguishing flag F is set to a value of 1 by performing the shift operation from the P position to the R position (reverse position) multiple times in the state that is ON (IGON) and ready OFF (READYOFF). When the ignition is on (IGON) and ready off (READYOFF), the warning lamp extinguishing flag F is set to a value of 1 by shifting the P position to the D position (forward position) multiple times. As the warning lamp initialization process, the warning lamp extinguishing flag F has a value of 1 and is ready (READYON), is in the P position, and is in a ready state (READYON). The accelerator is off with the brakes on within a specified time The accelerator-on operation is performed a plurality of times, the warning lamp extinguishing flag F is 1 and is ready (READYON), and is in the N position and ready-on (READYON). The operation from the accelerator off to the accelerator on may be performed multiple times within a predetermined time from the start of the operation, and normal driving is performed both as a warning lamp turn-off prerequisite process and a warning lamp initialization process. As long as the operation is different from the operation performed for the purpose, any operation may be used. Further, it is not necessary to perform the warning lamp extinction premise process and the warning lamp initialization process separately, and they may be integrated.

  In the hybrid vehicle 20 of the embodiment, when the integrated value of the travel distance stored in a predetermined area of the RAM 50c reaches a predetermined distance (for example, 10,000 km), the port fuel injection valve 126a for the engine 32 and the in-cylinder engine are used. Since it is necessary to properly operate the fuel injection valve 126b, the maintenance warning lamp 56 is lit to urge the execution of injector maintenance for adding the injector cleaning liquid to the fuel. The maintenance warning lamp 56 may be turned on to prompt the execution of injector maintenance when the year or the like has elapsed.

  In the hybrid vehicle 20 of the embodiment, an internal combustion engine including a port fuel injection valve 126a that injects fuel into the intake port and an in-cylinder fuel injection valve 126b that injects fuel directly into the cylinder is used as the engine 32. An internal combustion engine that includes a fuel injection valve for a cylinder but does not include a cylinder fuel injection valve may be used, or an internal combustion engine that includes a cylinder fuel injection valve but does not include a port fuel injection valve.

  In the embodiment, the hybrid vehicle 20 has been described. However, the present invention is not limited to the hybrid vehicle, and may be any vehicle on which an internal combustion engine is mounted. Moreover, it is good also as a form of the lighting control method of the maintenance warning lamp which turns on and off the maintenance warning lamp which urges | performs the execution of the maintenance of the fuel injection system of the internal combustion engine in the motor vehicle carrying an internal combustion engine.

  Here, the correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the engine 32 including the port fuel injection valve 126a and the in-cylinder fuel injection valve 126b corresponds to an “internal combustion engine”, and an integrated value of the travel distance is calculated based on the travel distance from the odometer 58. When the integrated value of the travel distance reaches a predetermined distance (for example, 10,000 km), it is necessary to properly operate the port fuel injection valve 126a and the in-cylinder fuel injection valve 126b of the engine 32. The HVECU 50 that turns on the maintenance warning light 56 in order to urge the execution of the injector maintenance to which the additive is added corresponds to “maintenance promotion warning means”. When the maintenance warning light 56 is turned on, the ignition is on (IGON) and ready off. In the state of (READYOFF), from P position to N positive The warning lamp extinction preconditioning routine shown in FIG. 3 for setting the value 1 to the warning lamp extinction flag F is executed by performing the shift operation to the multiple times (set value C1set) and the warning lamp extinction flag F Is the value 1 and is ready (READYON), and is in the P position, and the operation from the accelerator off to the accelerator on is performed a plurality of times (set value C2set) within a predetermined time after the state is ready (READYON). The HVECU 50 that executes the warning lamp initialization process routine of FIG. 4 that turns off the maintenance warning lamp 56 and resets the accumulated value of the travel distance stored in a predetermined area of the RAM 50c to a value of 0 It corresponds to “means”.

  Here, the “internal combustion engine” is not limited to the engine 32 including the port fuel injection valve 126a and the in-cylinder fuel injection valve 126b. The in-cylinder fuel injection valve includes the port fuel injection valve. Any type of internal combustion engine may be used, such as an internal combustion engine that does not include a cylinder, or an internal combustion engine that includes a cylinder fuel injection valve but does not include a port fuel injection valve. The “maintenance promotion warning means” is not limited to the one that turns on the maintenance warning lamp 56 in order to urge the execution of the injector maintenance when the integrated value of the travel distance reaches a predetermined distance, but is initialized. Maintenance of the fuel injection system of the internal combustion engine is performed when a predetermined elapsed counter reaches a predetermined value or more, for example, a maintenance warning lamp 56 is turned on to prompt execution of injector maintenance when a predetermined time has elapsed since As long as the maintenance warning light for prompting is lit, it may be anything. As the “reset extinguishing means”, the shift operation from the P position to the N position is performed a plurality of times (setting value) in a state where the ignition is on (IGON) and the ready is off (READYOFF) when the maintenance warning lamp 56 is lit. C1set), a warning lamp extinction premise process for setting the value 1 to the warning lamp extinction flag F is executed. The warning lamp extinction flag F is set to the value 1 and is ready (READYON). The maintenance warning lamp 56 is turned off and the RAM 50c is turned off by performing an operation from the accelerator off to the accelerator on a plurality of times (set value C2set) within a predetermined time after the position is in the ready state. Reset accumulated value of mileage stored in predetermined area to value 0 However, the warning lamp extinguishing process is not limited to the one that executes the warning lamp initialization process, but the precondition process for turning off the warning lamp is from the P position to the R position (reverse position) with the ignition on (IGON) and the ready off (READYOFF). ) Is set to a value 1 for the warning lamp extinguishing flag F by performing the shift operation to multiple times, or from the P position to the D position with the ignition on (IGON) and the ready off (READY OFF). As warning light initialization processing, such as setting the value 1 to the warning light extinguishing flag F by performing a shift operation to (forward position) a plurality of times, the warning light extinguishing flag F has a value 1 And ready-on and P-position It is assumed that the operation from accelerator-off to accelerator-on is performed a plurality of times in a brake-on state within a predetermined time after the state of ready-on (READYON), and the warning lamp extinguishing flag F has a value 1 and ready-on. (READYON) and N position, and the operation from accelerator-off to accelerator-on is performed multiple times in the brake-on state within a predetermined time after being in the READYON state. In addition, a predetermined operation different from the operation performed for running while the maintenance warning light is on, such as the warning light extinction premise process and the warning light initialization process are integrated. If a predetermined progress counter is reset to the initial value and the maintenance warning light is turned off It doesn't matter what. The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. It is an example for specifically explaining the best mode for doing so, and does not limit the elements of the invention described in the column of means for solving the problem. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention can be used in the automobile manufacturing industry.

1 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 20 as an embodiment of the present invention. 2 is a configuration diagram showing an outline of the configuration of an engine 32. FIG. It is a flowchart which shows an example of the warning lamp extinction premise process routine performed by the electronic control unit for hybrid 50 of an Example. It is a flowchart which shows an example of the warning lamp initialization process routine performed by the electronic control unit for hybrids 50 of an Example.

Explanation of symbols

  20 hybrid vehicle, 22 drive shaft, 24 differential gear, 26a, 26b drive wheel, 32 engine, 34 crankshaft, 36 engine electronic control unit (engine ECU), 36a CPU, 36b ROM, 36c RAM, 38 planetary gear mechanism, 40, 41 Motor, 42, 43 Inverter, 44 High voltage battery, 46 System main relay, 48 Auxiliary machine, 50 Hybrid electronic control unit (HVECU), 50a CPU, 50b ROM, 50c RAM, 52 Shift position sensor, 54 Accelerator position Sensor, 56 Maintenance warning light, 58 Odometer, 60 Power supply electronic control unit (power supply ECU), 62 Power switch, 63 Indicator, 64 Brake switch, 1 2 Air cleaner, 124 Throttle valve, 126a Port fuel injection valve, 126b In-cylinder fuel injection valve, 128 Intake valve, 130 Spark plug, 132 Piston, 134 Purification device, 135a Air-fuel ratio sensor, 135b Oxygen sensor, 136, Throttle motor 138 Ignition coil, 140 Crank position sensor, 142 Water temperature sensor, 143 Pressure sensor, 144 Cam position sensor, 146 Throttle valve position sensor, 148 Air flow meter, 149 Temperature sensor, 150 Variable valve timing mechanism.

Claims (4)

An automobile equipped with an internal combustion engine,
Maintenance promotion warning means for turning on a maintenance warning lamp for urging execution of maintenance of the fuel injection system of the internal combustion engine when a predetermined elapsed counter reaches a predetermined value or more;
While the maintenance warning light is on , the vehicle can be driven by a predetermined shift operation for changing the shift position multiple times and the vehicle by an accelerator operation in a state where the vehicle cannot be driven by a shift operation. The predetermined progress counter is reset to an initial value when a predetermined operation including at least one of a predetermined accelerator operation for changing the accelerator on and the accelerator off a plurality of times in an incapable state is performed. And a reset extinguishing means for extinguishing the maintenance warning light,
Automobile equipped with. The automobile according to claim 1,
The predetermined shift operation is an operation of changing the shift position over a plurality of times between the parking position and the neutral position,
The predetermined accelerator operation is an operation of changing the accelerator on and the accelerator off a plurality of times in a state where the shift position is the parking position.
Car. Said predetermined course counter, the vehicle in accordance with claim 1 or 2, wherein the integrated value or the elapsed time of the travel distance since the resetting. A maintenance warning light lighting control method for turning on or off a maintenance warning light that prompts execution of maintenance of the fuel injection system of the internal combustion engine in an automobile equipped with the internal combustion engine,
The maintenance warning light is turned on when a predetermined elapsed counter reaches a predetermined value or more. While the maintenance warning light is on , the shift position is set while the vehicle cannot be driven by a shift operation. It includes at least one of a predetermined shift operation that is changed a plurality of times and a predetermined accelerator operation that is changed a plurality of times between accelerator on and accelerator off in a state where the vehicle cannot be driven by an accelerator operation. When a predetermined operation is performed, the predetermined progress counter is reset to an initial value and the maintenance warning lamp is turned off.
A method for controlling lighting of a maintenance warning light.

Images