JPH09121469A - Power supply for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a load consuming power to be properly operated normally even if a voltage drop occurs between the terminals of a storage battery. SOLUTION: Driven by an internal combustion engine, a magneto coil 2 of a magneto 1 generates electric power. The output voltage of the magneto coil 2 is regulated and the current is rectified simultaneously by a voltage regulator 3 with a rectifier function to charge a storage battery 4. This storage battery 4 supplies power to a load 5 connected to the storage battery 4 in parallel and consuming power normally and to a load 6, etc., connected in parallel via a switch 8 and consuming large current intermittently. The magneto 1 is equipped with an auxiliary magneto coil 9 which supplies power to a load 5 consuming power normally, in addition to the magneto coil 2. The auxiliary magneto coil 9 supplies power to the load 5 consuming power normally via a voltage regulator 10 with the rectifier function by which its output voltage is regulated and its current is rectified simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for an internal combustion engine used in, for example, an outboard motor or a snowmobile.

[0002]

2. Description of the Related Art In an internal combustion engine used for an outboard motor, a snowmobile, etc., as shown in FIG. 3, the electric power generated by a magneto coil 1 of a magneto generator 1 which drives the internal combustion engine to generate electric power is rectified. A voltage regulator 3 with a function regulates a voltage while charging a storage battery 4, and a constant power consumption load consisting of a fuel pump motor of an internal combustion engine connected in parallel to the storage battery 5; a starter or intermittent use of the internal combustion engine Power is supplied from the storage battery 4 to a large current intermittent load 6 such as a motor and a load 7 such as a lamp. The large current intermittent load 6 is connected to the storage battery 4 via a switch 8. In the voltage regulator 3 with a rectifying function, for example, two diodes of a diode bridge are replaced by thyristors, and the voltage is regulated by controlling the conduction phase angle of these thyristors.

[0003]

In the internal-combustion-engine power supply device for supplying the constant power consumption load 5 and the large-current intermittent use load 6 as described above, when the switch 8 of the large-current intermittent use load 6 is turned on, the storage battery is turned on. The terminal voltage of 4 generally drops.

When the installed storage battery 4 is fully discharged, the connection of the large-current intermittent use load 6 causes a rapid drop in the storage battery terminal voltage, so that the large-current intermittent use load 6 operates normally without being connected. Possible constant power consumption load 5,
For example, when the fuel pump motor of the internal combustion engine is connected, the driving of the fuel pump motor becomes unstable due to the temporary voltage drop.

As a preventive measure, a power generation coil 2 and a storage battery 4 are provided.
If this is done, the power generation coil 2 and the storage battery 4 become large, and there is a problem that the size of a vehicle such as an outboard motor or a snow vehicle cannot be increased due to restrictions on its installation space.

An object of the present invention is to provide a power supply device for an internal combustion engine which can always operate a power consumption load normally even when the terminal voltage of the storage battery is lowered.

[0007]

SUMMARY OF THE INVENTION The present invention charges a storage battery by adjusting the voltage while rectifying the generated output of a magneto coil of a magneto generator that generates electric power by driving an internal combustion engine while rectifying the voltage. , An object is to improve the power supply device for an internal combustion engine, which is configured to supply power from the storage battery to a constant power consumption load connected in parallel to the storage battery or a large current intermittent use load connected in parallel via a switch. .

In the power supply device for an internal combustion engine according to the present invention, the magnet generator includes, in addition to the power generation coil, an auxiliary power generation coil that constantly supplies power to a power consumption load, and the auxiliary power generation coil rectifies its output and outputs voltage. It is characterized in that power is constantly supplied to a power consumption load via a voltage regulator with a rectifying function for adjusting the.

As described above, the magneto-generator is provided with the auxiliary generator coil that constantly supplies the power consumption load in addition to the generator coil, and the auxiliary generator coil adjusts the voltage while rectifying the output of the auxiliary generator coil. If the power is constantly supplied to the power consuming load via the power supply device, the power consuming load can be normally operated even if the terminal voltage of the storage battery is lowered.

In this case, the auxiliary generator coil and the voltage regulator with its rectifying function may be connected in series to the constant power consumption load or may be connected in parallel.

In the case of parallel connection with the constant power consumption load, the auxiliary power generation coil and its rectification function are provided between the storage battery and the high-current intermittent load and the auxiliary power generation coil and the voltage regulator with its rectification function. By connecting the rectifier in such a direction that the power is not supplied from the voltage regulator to the storage battery and the high-current intermittent load, the power from the auxiliary generating coil can always be reliably supplied to the power-consuming load.

When the fuel pump motor of the internal combustion engine has a constant power consumption load, the fuel pump motor can be normally operated even if the terminal voltage of the storage battery is lowered.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first example of an embodiment of a power supply device for an internal combustion engine according to the present invention.

In the power supply device for an internal combustion engine of the present embodiment, the magnet generator 1 includes, in addition to the power generation coil 2, an auxiliary power generation coil 9 for supplying power to a constant power consumption load 5 such as a fuel pump motor of the internal combustion engine. The auxiliary power generation coil 9 constantly supplies power to the power consumption load 5 through a voltage regulator 10 with a rectifying function that regulates the voltage while rectifying the output. In this voltage regulator 10 with a rectifying function, for example, two diodes of a diode bridge are replaced with thyristors, and the voltage is adjusted by controlling the conduction phase angle of these thyristors. In this example, the auxiliary generator coil 9 and the voltage regulator 10 with a rectifying function are always connected in series to the power consumption load 5.

Thus, the magnet generator 1 is replaced by the generator coil 2
In addition to the above, an auxiliary power generation coil 9 that constantly supplies power to the power consumption load 5 is provided, and the auxiliary power generation coil 9 rectifies the output thereof through a voltage regulator 10 with a rectification function that adjusts the voltage. Power is supplied to the storage battery 4, the constant power consumption load 5 can be normally operated even if the terminal voltage of the storage battery 4 is lowered.

FIG. 2 shows a second example of the embodiment of the power supply device for an internal combustion engine according to the present invention.

Also in the internal combustion engine power supply device of this example, the magnet generator 1 is provided with an auxiliary power generation coil 9 for supplying power to a constant power consumption load 5 such as a fuel pump motor of the internal combustion engine, in addition to the power generation coil 2. The auxiliary generator coil 9 constantly supplies power to the power consumption load 5 via a voltage regulator 10 with a rectifying function that regulates the voltage while rectifying the output.
In this voltage regulator 10 with a rectifying function, for example, two diodes of a diode bridge are replaced with thyristors,
The voltage is adjusted by controlling the conduction phase angle of these thyristors. In this example, the auxiliary generator coil 9 and the voltage regulator 10 with a rectifying function are always connected in parallel to the power consumption load 5. In the case of such parallel connection, the auxiliary generator coil 9 and its voltage regulator with a rectifying function are provided between the storage battery 4, the high-current intermittent use load 6 and the auxiliary generator coil 9 and its voltage regulator with a rectifying function. Storage battery 4 and high current intermittent load 6 from 10
The rectifier 11 is connected in a direction in which it is not supplied to.

As described above, the magneto-generator 1 includes the magneto-coil 2
In addition to the above, an auxiliary power generation coil 9 that constantly supplies power to the power consumption load 5 is provided, and the auxiliary power generation coil 9 rectifies the output thereof through a voltage regulator 10 with a rectification function that adjusts the voltage. Power is supplied to the storage battery 4, the constant power consumption load 5 can be normally operated even if the terminal voltage of the storage battery 4 is lowered.

When the auxiliary generator coil 9 and the voltage regulator 10 with its rectifying function are connected in parallel to the constant power consumption load 5, the storage battery 4, the large-current intermittent use load 6, the auxiliary generator coil 9 and its rectification are also provided. Electric power is supplied from the auxiliary generator coil 9 and the voltage regulator 10 having a rectifying function to the storage battery 4 and the high-current intermittent use load 6 between the voltage regulator 10 with a function.
By connecting the rectifier 11 in the direction that does not supply
It is possible to always reliably supply the electric power from the auxiliary generating coil 9 to the electric power consumption load 5.

In the above embodiment, the constant power consumption load 5 is 1
Although the case where the power consumption load is 5 is described, the constant power consumption load 5 may be two or more.

[0021]

In the power supply device for an internal combustion engine according to the present invention, the magnet generator includes, in addition to the power generating coil, an auxiliary power generating coil that constantly supplies power to the power consumption load, and the auxiliary power generating coil rectifies its output. While the structure is such that power is constantly supplied to the power consumption load via the voltage regulator with a rectifying function that adjusts the voltage, the constant power consumption load can be operated normally even if the terminal voltage of the storage battery is reduced. it can.

In this case, the auxiliary generator coil and the voltage regulator with a rectifying function thereof may be connected in series to the power consumption load at all times or in parallel.

In the case where the constant power consumption load is connected in parallel, the auxiliary generator coil and its rectifying function are provided between the storage battery and the high current intermittent use load, and the auxiliary generator coil and the voltage regulator with its rectifying function. By connecting the rectifier in such a direction that the power is not supplied from the voltage regulator to the storage battery and the high-current intermittent load, the power from the auxiliary generating coil can always be reliably supplied to the power-consuming load.

When the fuel pump motor of the internal combustion engine has a constant power consumption load, the fuel pump motor can be normally operated even if the terminal voltage of the storage battery is lowered.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a first example of an embodiment of an internal combustion engine power supply device according to the present invention.

FIG. 2 is a circuit diagram showing a second example of an embodiment of an internal combustion engine power supply device according to the present invention.

FIG. 3 is a circuit diagram of a conventional power supply device for an internal combustion engine.

[Explanation of symbols]

 1 Magnetogenerator 2 Generator coil 3 Voltage regulator with rectification function 4 Storage battery 5 Constant power consumption load 6 Large current intermittent use load 7 Load 8 Switch 9 Auxiliary generator coil 10 Voltage regulator with rectification function 11 Rectifier

Claims (4)

[Claims] 1. A storage battery is charged by adjusting a voltage while rectifying a power generation output by a power generation coil of a magneto power generator that drives an internal combustion engine by a voltage regulator with a rectification function, and connecting the storage battery in parallel. In an internal combustion engine power supply device configured to supply power from the storage battery to a large-current intermittent use load or the like that is constantly connected in parallel via a power consumption load or a switch, the magneto-generator, in addition to the generator coil, An auxiliary generator coil for supplying power to the constant power consumption load is provided, and the auxiliary generator coil is configured to supply power to the constant power consumption load via a voltage regulator with a rectifying function that regulates the voltage while rectifying the output. A power supply device for an internal combustion engine, characterized in that 2. The power supply device for an internal combustion engine according to claim 1, wherein the auxiliary generator coil and the voltage regulator with a rectifying function thereof are connected in series to the constant power consumption load. 3. The auxiliary generator coil and a voltage regulator with a rectifying function for the auxiliary generator coil are connected in parallel to the constant power consumption load, and the storage battery, the high-current intermittent use load, the auxiliary generator coil, and a voltage regulator with a rectifying function for the auxiliary battery. 2. A rectifier is connected between the auxiliary generator coil and a voltage regulator with a rectifying function of the auxiliary generator coil so as not to supply electric power to the storage battery and the high-current intermittent load. A power supply device for an internal combustion engine as described. 4. The power supply device for an internal combustion engine according to claim 1, wherein the constant power consumption load is a fuel pump motor of the internal combustion engine.