JP2005002829A - Starter controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a starter controller capable of facilitating engine start operation and starting an engine securely. <P>SOLUTION: In this starter controller for driving a self-starter motor 4 for a prime mover when starting the prime mover, the self-starter motor is driven for at least one second or more when a starter switch 3 of the self-starter motor 4 is turned on and off at an interval of one second or less. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a starter control device for a prime mover for starting an engine with a self-starter motor.
[0002]
[Prior art]
Conventionally, when starting an engine with a self-starter motor for a prime mover, the user energizes the self-starter motor and starts the engine only while the starter switch is turned on (see Patent Document 1).
In addition, a brake switch (inhibitor switch) that detects the stroke of the brake lever or the reaction force of the brake lever and turns on / off the self-starter motor as an inhibitor mechanism when starting the engine is connected to this starter switch in series. is doing.
This technique is particularly effective in a two-wheeled vehicle equipped with a CVT without a clutch such as a scooter.
[0003]
4 and 5, a brake switch (BRAKE SW) 2 and a starter switch (START SW) 3 are connected in series to a + 12V battery power source (not shown). When both the brake switch 2 and the starter switch 3 are in the ON state, the input signal (BRAKE / START SW) to the ECU (engine control device) 1 is in the ON state.
The ECU 1 continues energization to the self-starter motor (ACG STARTER) 4 while the input signal is in the ON state (see BRAKE / START SW, MOTOR energization in FIG. 5).
Thus, the user starts the engine by energizing the self-starter motor 4 only while the starter switch 3 is in the ON state while the brake switch 2 is in the ON state.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-31022
[Problems to be solved by the invention]
According to the drive control of the self-starter motor 4 as described above, when the user turns off the start switch 3, the input signal to the ECU 1 is turned off. At this time, the ECU 1 stops energization to the self-starter motor 4 at the same time.
For this reason, when the start switch 3 is turned ON / OFF by a user for a time shorter than a time sufficient for starting the engine, the energization time for the self-starter motor 4 is insufficient, and the engine is reliably started. Sometimes it can't be done.
[0006]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a starter control device that facilitates engine start operation and can reliably start the engine.
[0007]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a control for driving a motor self-starter motor (for example, the self-starter motor 4 in the embodiment) when starting the motor. In a device (for example, ECU 1 in the embodiment), with the brake switch (for example, brake switch 2 in the embodiment) turned on, the starter switch of the self-starter motor (for example, start switch 3 in the embodiment) Is turned on / off at intervals of several seconds, the self-starter motor is driven at least for a set time.
[0008]
With this configuration, the self-starter motor rotates at least for a set time even when turned on / off at intervals of several seconds.
[0009]
According to a second aspect of the present invention, in the control device for driving the prime mover self-starter motor when the prime mover is started, the starter switch of the self-starter motor is turned on at intervals within several seconds with the brake switch turned on. When turned on / off, the self-starter motor is driven for a sufficient time to start the engine of the prime mover set in advance.
[0010]
With this configuration, even when the starter switch of the self-starter motor is turned on / off at a short time interval within a few seconds, the self-starter motor rotates for a time sufficient to start the engine.
[0011]
The invention according to claim 3 is the self-starter according to claim 1 or 2, wherein the self-starter is turned off when the brake switch is turned off within the time during which the self-starter motor is driven. The rotation of the motor is stopped.
[0012]
With this configuration, when the brake switch is turned off within the time during which the self-starter motor is being driven, the rotation of the self-starter motor is stopped.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a starter control device of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing the configuration of the starter control device of the present embodiment.
As shown in FIG. 1, the starter control device of the present embodiment is constituted by an engine control device (hereinafter referred to as ECU) 1. The ECU 1 has an input circuit that inputs independently to each of the brake switch 2 and the start switch 3. In each independent input circuit, signals indicating the ON / OFF state from the respective switches (BRAKE SW, START SW in FIG. 3). ).
The brake switch 2 and the start switch 3 are connected in parallel to a + 12V battery power source (not shown), and each output a signal indicating an ON / OFF state to the ECU 1.
The ECU 1 is connected to the self-starter motor 4 and controls energization of the self-starter motor 4 (MOTOR energization in FIG. 3) based on respective input signals indicating ON / OFF states of the brake switch 2 and the start switch 3. (To be described later).
The self-starter motor 4 starts the engine by rotating the motor based on the energization control of the ECU 1. When the brake switch 2 is turned off during the rotation of the motor, the rotation of the motor is stopped based on the energization control of the ECU 1.
[0014]
Next, the operation of the starter control device of this embodiment will be described with reference to the drawings. FIG. 2 is a flowchart showing a starter control process according to this embodiment. Now, when the user starts the engine with the motor for the starter motor, the brake switch 2 is turned on by grasping the brake lever, and the ECU 1 inputs a signal indicating that the brake switch 2 is turned on.
This is a precondition for starting control as an inhibitor mechanism when starting the engine. In this state, when the user further turns the start switch 3 from the OFF state to the ON state (Yes in step S1 in FIG. 2), the ECU 1 inputs a signal indicating that the start switch 3 is in the ON state, and the self starter motor Is energized for a preset time (step S2).
[0015]
This will be described with reference to the timing chart of FIG. In the timing chart of FIG. 3, the vertical axis indicates the ON / OFF state of the brake switch 2, the start switch 3, and the self starter motor 4, and the horizontal axis indicates the passage of time.
Now, when the brake switch (BRAKE SW) 2 is in the ON state (part A in FIG. 3), the start switch (START SW) 3 transitions from the OFF state to the ON state and from the ON state to the OFF state within an interval of 1 second ( In FIG. 3, from the B part to the B 'part), the ECU 1 is set to a predetermined energization duration (see FIG. 3) triggered by the fact that the product (AND) of the input signals to the input circuits corresponding to the respective switches is turned on. 3 is 1.0 sec. This time is set as a time sufficient to start the engine based on the engine characteristics and the like.) The self-starter motor 4 is energized (C to C 'in FIG. 3). .
[0016]
When the brake switch 2 transitions from the ON state to the OFF state within this energization duration time (for example, 1.0 sec from the start of energization in FIG. 3) (Yes in step S3 in FIG. 2), the ECU 1 performs the self-starter motor 4. Stop energizing the. Thereby, the inhibitor function at the time of starting of a vehicle can be exhibited.
On the other hand, the ECU 1 continues to energize the self-starter motor 4 while the brake switch 2 is in the ON state (No in step S3) within the energization duration time.
Further, within this energization duration time, the ECU 1 performs energization control to the self-starter motor 4 based only on the input signal from the brake switch 2 regardless of whether the start switch 3 is ON or OFF (No in step S4). ).
And if energization continuation time passes (it is Yes at Step S4), ECU1 will stop energization to self starter motor 4.
[0017]
Therefore, even when the user presses the start switch 3 for a short time of about 1 second or less, the self-starter motor 4 rotates for a sufficient time to start the engine. For this reason, the engine starting operation can be facilitated and the engine can be reliably started.
[0018]
In the above-described embodiment, an example has been described in which it is assumed that the time for which the start switch 3 is in the ON state (B to B ′ in FIG. 3) is shorter than a preset energization duration. However, the present invention is not limited to this.
That is, as shown by the broken line portion in FIG. 3, when the time for which the start switch 3 is in the ON state is longer than the preset energization duration, the ECU 1 The energization may be continued.
In this case, even when the engine cannot be started for a preset energization time due to aging deterioration of the battery or the like, an effect is obtained that can be started depending on the user's starting operation.
[0019]
【The invention's effect】
As described above, the invention according to claim 1 makes the engine start operation easy because the self-starter motor rotates at least 1 second or more even when it is turned ON / OFF within an interval of 1 second or less. The effect that the engine can be reliably started can be obtained.
[0020]
Further, according to the second aspect of the present invention, even when the starter switch of the self-starter motor is turned on / off within an interval of 1 second, the self-starter motor rotates for a sufficient time to start the engine. In addition to facilitating the engine start operation, it is possible to obtain the effect of starting the engine more reliably.
[0021]
According to a third aspect of the present invention, the rotation of the self-starter motor stops when the brake switch is turned off within the time during which the self-starter motor is being driven. Inhibitor function can be exerted.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a starter control device of an embodiment.
FIG. 2 is a flowchart of starter control.
FIG. 3 is a timing chart of starter control according to the present embodiment.
FIG. 4 is a configuration diagram of a conventional starter control device.
FIG. 5 is a timing chart of conventional starter control.
[Explanation of symbols]
1 ... ECU (Engine Control Unit)
2 ... Brake switch 3 ... Start switch

Claims (3)

In a control device for driving a self-starter motor for a prime mover when starting the prime mover,
A starter control device that drives the self-starter motor at least a set value when the starter switch of the self-starter motor is turned on / off at an interval within a set value with the brake switch turned on. In a control device for driving a self-starter motor for a prime mover when starting the prime mover,
When the starter switch of the self-starter motor is turned on / off at an interval within a set value while the brake switch is turned on, the self-starter has a sufficient time to start the engine of the motor set in advance. A starter control device characterized by driving a motor. 3. The starter control device according to claim 1, wherein when the brake switch is turned off within a time during which the self-starter motor is being driven, rotation of the self-starter motor is stopped. .

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