JP6516644B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle equipped with an internal combustion engine that is started by the operation of a start switch.

  In a vehicle equipped with an internal combustion engine, when the starter motor is energized, its pinion meshes with a drive plate fixed to the crankshaft of the internal combustion engine, and cranking is started.

  At present, in many vehicles, the starter motor can be energized only when the shift position of the shift lever is in the parking range or the neutral range. That is, when the shift position is in the reverse range or the forward travel range, energization of the starter motor is inhibited and the pinion is separated from the drive plate.

  By the way, in recent years, a so-called push-start type vehicle is launched, in which cranking is started by operating a start switch (start button) provided on the driver's seat, and the internal combustion engine is started. In such a vehicle, the driver can start the internal combustion engine only by operating the start switch (typically, pressing by a finger).

JP, 2011-247237, A

  However, the driver operating the push start type vehicle may operate the shift lever from the parking range or the neutral range to the reverse range or the forward travel range immediately after operating the start switch. The behavior that occurs in such a case will be described with reference to FIG.

  In the figure, the torque acting on the pinion, the engine speed, that is, the rotation speed of the drive plate, the circumferential speed of the pinion of the starter motor (converted to the engine speed), the voltage of the starter motor and the behavior of the shift lever are shown. Here, cranking is started in the parking range (P range), and before the cranking is completed, the shift lever shifts from the parking range to the reverse range (R range) and further shifts to the neutral range (N range) It is assumed that When the shift lever in the parking range shifts to the reverse range, the starter motor is deenergized and the pinion separates from the gear of the drive plate. At this time, although the drive plate and the starter motor continue to rotate by inertia, respectively, there is a divergence between the deceleration of the rotation of the drive plate and the deceleration of the rotation of the starter motor.

  After that, when the shift lever shifts from the reverse range to the neutral range, the starter motor is energized again, and the two mesh again in the state where there is a difference in rotational speed between the pinion and the drive plate. In particular, as shown in FIG. 4, when the pinion in forward rotation tries to mesh at the moment when the drive plate reversely rotates just before stopping (at about 25 ms in FIG. 4), the pinion, one-way clutch or drive plate An excessive load will be applied.

  The present invention focuses on such a problem for the first time, and effectively avoids an event in which an excessive load is applied to the pinion, the one-way clutch and the drive plate of the starter motor at the start of a vehicle equipped with the start switch. The purpose is that.

  The present invention takes the following measures to achieve such an object.

  That is, in the vehicle according to the present invention, an internal combustion engine that supplies torque for traveling to an axle, a shift lever capable of switching a shift position, a start switch operated by a driver, and the shift position is a parking range or neutral range When the start switch is operated, the pinion is engaged with the gear provided on the drive plate fixed to the crankshaft of the internal combustion engine only when the start switch is operated, and cranking is performed for a predetermined time, and the shift lever A starter motor in which the drive plate and the pinion are separated and not energized when the reverse range or the forward travel range, and the reverse range or the forward range from the parking range or the neutral range during cranking Before driving range If the shift lever is operated, characterized by comprising a control device wherein the start switch is prohibiting the re-energization of the starter motor until the operation again.

  Here, the "start switch" is not limited to the aspect such as a button operated by the driver's pressing operation, but may be a rotatable lever if it is an aspect that can be operated by a simple operation by the driver. It includes various forms which can be operated by the driver, such as those having a shape, a structure, or a slide like a slider.

  With such an arrangement, it is possible to effectively prevent the pinion from meshing with the drive plate again while the rotation of the starter motor continues. That is, according to the present invention, it is possible to effectively avoid the event that the starter motor and the drive plate are overloaded when starting.

  According to the present invention, according to the present invention, in a vehicle equipped with a start switch, a vehicle capable of effectively avoiding the occurrence of a problem in which an excessive load is applied to the starter motor and the drive plate is provided. it can.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which concerns on one Embodiment of this invention. The flow figure concerning the embodiment. The timing chart which concerns on the embodiment. The timing chart which concerns on a prior art.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The vehicle according to the present embodiment is provided with an internal combustion engine 100 for supplying a torque for traveling to an axle, a driver's seat is provided with a start switch 1 and a shift lever 2, and a starter motor is operated by operation of the start switch 1. The cranking can be started by energizing the current 105 to start the internal combustion engine 100.

  The start switch 1 is referred to as a so-called "start button", which is disposed, for example, on the right side of a steering wheel (not shown) in the driver's seat and has a button shape that can be easily pressed by the driver's right hand. It is a thing.

  The shift lever 2 is disposed, for example, on the left side of the steering wheel in the present embodiment and can be operated by the driver's left hand. Specifically, the shift lever 2 is, from the top, parking range (hereinafter referred to as P range), reverse range (hereinafter referred to as R range), neutral range (hereinafter referred to as N range), D range, S range and B The transmission connected to the output side of the internal combustion engine 100 can be operated to each shift position arranged in the order of the range. In the present embodiment, the shift positions are linearly arranged. In the present embodiment, the D range, the S range, and the B range have different gear ratios, but each corresponds to a forward travel range for advancing the vehicle. The shift position of the shift lever 2 can be grasped from the shift range signal b transmitted from the shift position switch 21 of the shift lever 2.

  The internal combustion engine 100 includes an engine body 101 having a combustion chamber and a piston (not shown), a crankshaft 102 provided on the engine body 101, and a drive plate 103 having a gear 103a on the outer surface side fixed to the crankshaft 102. And a crank angle sensor 104 for transmitting a crank angle signal c for detecting the rotational speed of the crankshaft 102.

  When the starter motor 105 is energized, it moves from the state shown to the right to the position of the imaginary line and rotates the pinion 107 in a state where the pinion 107 is engaged with the gear 103a of the drive plate 103. The transmission of the driving force to 107 is stopped and the pinion 107 is set apart from the gear 103a to the illustrated position. The starter motor 105 is interposed between a motor body 106 (not shown), a motor body 106 having a built-in stator, a rotatable pinion 107, and the pinion 107 and the motor body 106. It has a one-way clutch 108 for inhibiting transmission of the directional driving force to the motor body 106. Specifically, the starter motor 105 is energized only when the start switch 1 is operated when the shift position is in the P range or N range, and the pinion 107 is engaged with the gear 103a provided on the drive plate 103. When the shift position is in the R range or the D range which is the forward travel range, the S range or the B range, the drive plate 103 and the pinion 107 are separated and not energized. It is set to the specification.

  An ECU (Electronic Control Unit) 0, which is a control device mounted on a vehicle according to this embodiment, is a microcomputer system having a processor, a memory, an input interface, an output interface, and the like.

  The input interface is output from a sensor that detects the vehicle speed signal output from the vehicle speed sensor that detects the actual vehicle speed of the vehicle, the depression amount of the accelerator pedal, or the opening degree of the throttle valve as the accelerator opening degree (in other words, required load). An accelerator opening signal, a brake depression signal output from a sensor that detects the depression amount of the brake pedal, and an intake pressure that is output from a temperature / pressure sensor that detects an intake temperature and intake pressure in an intake passage (in particular, a surge tank) Air temperature / intake pressure signal, coolant temperature signal output from coolant temperature sensor for detecting coolant temperature of internal combustion engine 100, cam angle signal output from cam angle sensor at a plurality of cam angles of intake camshaft or exhaust camshaft, etc. Is input. In particular, in the present embodiment, the input signal is output from the shift position switch 21 for obtaining the start signal a output from the start switch 1 when the start switch 1 is pressed and the range of the shift lever 2. At least a shift range signal b, and a crank angle signal c output from a crank angle sensor 104 that detects the rotational angle of the crankshaft 102 and the engine speed NE are input.

  The output interface outputs an ignition signal to the spark plug, a fuel injection signal to the injector, an opening operation signal to the throttle valve, and the like. In particular, in the present embodiment, at least the motor control signal d for controlling the energization of the starter motor 105 is output from the output interface.

  The processor of the ECU 0 interprets and executes a program stored in advance in the memory, calculates operation parameters, and controls the operation of the internal combustion engine 100. The ECU 0 acquires various information a, b, c, etc. necessary for operation control of the internal combustion engine 100 via the input interface, and the presence or absence of the operation to the start switch 1, the shift position of the shift lever 2, and the engine speed NE Get to know Then, based on the engine speed and the like, it is determined at least whether or not it is necessary to energize the starter motor 105, including various operation parameters such as the required fuel injection amount and fuel injection timing and ignition timing. The ECU 0 applies a control signal d or the like corresponding to the operation parameter via the output interface.

  Here, when the shift lever 2 is operated from the P range or the N range to the R range or the forward travel range during cranking, the ECU 0 mounted on the vehicle according to the present embodiment until the start switch 1 is operated again It is characterized in that re-energization of the starter motor 105 is prohibited.

  Hereinafter, starting of the internal combustion engine 100 using the start switch 1 according to the present embodiment will be described using the flow chart of FIG. 2 and the timing chart of FIG.

  As shown in FIG. 2, when the driver depresses the start switch 1 (step S1), the ECU 0 receives the start signal a. If the shift position is any range of the P range or the N range, the ECU 0 transmits the motor control signal d to permit the energization of the starter motor 105 (step S3). On the other hand, when the shift position is in the R range or the forward travel range, the starter motor 105 is not energized (step S6). Then, if the energization time of the starter motor 105 passes a predetermined time such as 0.4 seconds as an example, it is determined that the start is normally completed, and a motor control signal d to the effect of ending cranking is issued ( Step S6). Further, even when the energization time to the starter motor 105 does not exceed the predetermined time, if the ECU 0 determines from the crank angle signal c that the engine rotation speed NE exceeds the predetermined rotation speed, the ECU 0 is the internal combustion engine 100 It is determined that the complete explosion has occurred and the start has been completed normally, and the motor control signal d to the effect of terminating energization of the starter motor 105, that is, ending cranking, is transmitted (step S6).

  Here, the shift position shifts to the R range, D range, S range or B range, which is a range other than the P range or N range, even though the current supply time to the starter motor 105 has not passed the predetermined time. If it has been counted (step S7), the ECU 0 sends a motor control signal d to the effect that the current supply to the starter motor 105 is inhibited until the start switch 1 is pressed again (step S8). On the other hand, if the shift position is not shifted, it is determined that the start is normally completed when a predetermined time has elapsed (step S4) or when the engine speed exceeds a predetermined value (step S5). A motor control signal d to end the cranking is transmitted (step S6).

  Subsequently, FIG. 3 shows an example of the behavior of the vehicle according to the flow chart shown in FIG. In the figure, the torque acting on the pinion 107, the engine speed NE, ie, the speed of the drive plate 103, the circumferential speed of the pinion of the starter motor 105 (converted to the engine speed NE), the voltage of the starter motor 105, and It shows the behavior. Here, cranking is started in the P range, and the shift lever 2 shifts from the P range to the R range and further shifts to the N range before the cranking is completed. . When the shift lever 2 in the P range shifts to the R range, the current supply to the starter motor 105 is cut off, and the pinion 107 separates from the gear 103 a of the drive plate 103. At this time, the drive plate 103 and the starter motor 105 continue to rotate due to inertia, however, there is a divergence between the deceleration degree of the drive plate 103 and the deceleration degree of the starter motor 105. The behavior up to this point is the same as in FIG. 4 described above.

  Thus, in the present embodiment, even if the shift lever 2 shifts to the N range after that, the starter motor 105 is not energized again. That is, as already shown in the above-mentioned step S8, energization of the starter motor 105 is inhibited unless the driver depresses the start switch 1 again.

  By this, if electricity is supplied, the rotational speed of the drive plate 103 and the rotational speed of the drive plate 103 are not so great at the moment when the gear 103a of the drive plate 103 is reversely rotated (about 25 ms in FIG. 3). The problem that the pinion 107 rotating in the forward direction without lowering is meshed again is effectively avoided.

  As a result, the cranking is stopped without an excessive load being applied to the starter motor 105 and the drive plate 103. If the driver recognizes that the cranking has been stopped, the driver may press the start switch 1 again to start the internal combustion engine 100.

  With the above configuration, according to the present embodiment, it is possible to effectively prevent the pinion 107 from meshing with the drive plate 103 again while the rotation of the starter motor 105 is continuing. . That is, according to the present invention, it is possible to effectively avoid a situation in which an excessive load is applied to the starter motor 105 and the drive plate 103 assumed in a vehicle equipped with the start switch 1.

  In the present embodiment, in particular, by avoiding the meshing between the gear 103a and the pinion 107 at the timing of reverse rotation immediately before the crankshaft 102 stops, excessive load is applied to the pinion 107 of the starter motor 105 and the one-way clutch 108. It is also effectively avoided that the load is given to the drive plate 103 and the crankshaft 102 of the internal combustion engine 100.

  As mentioned above, although embodiment of this invention was described, the specific structure of each part is not limited only to embodiment mentioned above, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.

  For example, although the above-mentioned embodiment disclosed the mode which applied the present invention to the vehicle which has a shift lever which has only a portion operated linearly, of course, the mode which operates to bend a shift lever partially The present invention may be applied to a vehicle equipped with a shift lever. Further, specific modes such as a predetermined time set for cranking and a predetermined number of revolutions for determining the complete explosion of the internal combustion engine are not limited to those of the above embodiment, and include the existing ones, Various aspects can be made.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

  The present invention can be used as a vehicle equipped with an internal combustion engine that is started by the operation of the start switch.

0 ... Control unit (ECU)
Reference Signs List 1 start switch 2 shift lever 100 internal combustion engine 103 drive plate 103 a gear 105 starter motor 107 pinion

Claims (1)

An internal combustion engine that supplies torque to the axles for traveling;
A shift lever capable of switching the shift position;
A start switch operated by the driver,
When the shift position is in the parking range or the neutral range, the pinion is engaged with the gear provided on the drive plate fixed to the crankshaft of the internal combustion engine and energized only when the operation to the start switch is performed. A starter motor that performs ranking for a certain period of time and the drive plate and the pinion are separated and not energized when the shift position is in the reverse range or the forward travel range;
When the shift lever is operated from the parking range or the neutral range to the reverse range or the forward travel range during cranking, control for prohibiting re-energization of the starter motor until the start switch is operated again A vehicle equipped with an apparatus.

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