JPH0313542Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an idle-up device for an internal combustion engine, and in particular, it has a simple configuration and can increase the idle of the internal combustion engine when carrying two electric power loads, and can also handle seasonal electric power. The present invention relates to an idle-up device for an internal combustion engine that can respond to load fluctuations.

[Conventional technology]

Vehicles such as automobiles that are driven by internal combustion engines are equipped with various electrically operated devices. The power supply that supplies power to these devices supplements the power consumed by the generator driven by the driving force of the internal combustion engine. However, when the electrical equipment is activated during idling operation of the internal combustion engine, the charging capacity of the generator is insufficient to meet the power consumption of the power source, resulting in rapid consumption of the power source, which has the disadvantage of causing engine malfunction. Therefore, an idle up device has been proposed that increases the idle of the internal combustion engine when a power load such as the above-mentioned equipment is applied.

[Problem that the invention attempts to solve]

By the way, some conventional idle-up devices operate in conjunction with a switch for a single electric power load (for example, lighting a headlamp, driving an air-conditioning air supply motor, etc.). However, such an idle-up device has the problem that (1) the idle is increased by the addition of a single power load, and therefore the idle is increased regardless of the size of the power load. Therefore, there is a problem (2) that it is not possible to cope with fluctuations in power load depending on the season. For example, there is a problem in that it is not possible to cope with cases where idle up is required, such as during daytime lighting in winter, even though idle up is not normally required. In other words, if you set the engine to increase the idle during daytime lighting, you can respond to cases where idle up is required, such as daytime lighting in winter, but you can also increase the idle up when idle up is not required, such as daytime lighting in summer. As a result, there is a problem in that it is not possible to cope with fluctuations in power load depending on the season. Furthermore, (1)
With such an operating setting, (3) the idle-up mechanism operates throughout the year, resulting in inconveniences such as a worsening of the fuel consumption rate.

Therefore, it is possible to cope with seasonal fluctuations in the power load and to improve the deterioration of the fuel consumption rate by combining the two power loads and increasing the idle state when the two power loads are being carried. For example, as shown in FIG.
The relay 30 is closed when the switch 12 is closed.
and a relay 32 that is closed when the second switch 16 of the second power load 14 is closed. 2
An idle up device that supplies power to 2 can be considered.

However, in such an idle up device, the structure of the AND circuit 34 consists of two relays 30,
32 and a plurality of electrical circuits, which increases the cost, requires time for maintenance and inspection, and has an adverse effect on reliability. Further, there is the disadvantage that a large space is required for installing the circuit.

[Purpose of invention]

Therefore, the object of this invention is to realize an idle-up device for an internal combustion engine that has a simple configuration and can increase the idle of the internal combustion engine when carrying two electric power loads, and can also cope with seasonal fluctuations in the electric power load.

[Means for solving problems]

In order to achieve this purpose, this invention connects a first electric path and a second electric path to a power source in parallel, and arranges a first power load on the ground side in the middle of the first electric path. and a first contact that is closed to supply power to the first power load is disposed on the power source side,
A second power load is disposed on the power supply side in the middle of the second electric path, and a second contact that is closed to supply power to the second power load is disposed on the ground side, A first electrical path between the first contact and the first power load, the second contact and the second power to idle up the internal combustion engine when power is supplied to the first power load and the second power load. 2nd between loads
A third electrical circuit is provided to connect the electrical circuit to the electrical circuit, and a diode whose forward direction is directed toward the second electrical circuit is provided in the middle of the third electrical circuit, and a third electric power load that is to idle up the internal combustion engine. It is characterized by the following.

[Effect]

According to the configuration of this invention, the first contact and the first
a first electrical path between a power load and a second contact;
Since the diode and the third power load are only provided in the middle of the third electric path that connects the second electric path between the power loads, the structure is simplified without requiring components such as relays as in the conventional case. Further, by combining two power loads, various settings can be made, and the combination can correspond to seasonal fluctuations in power load.

〔Example〕

Next, an embodiment of this invention will be described in detail based on the drawings. Figures 1 and 2 show the basic configuration of this invention. In the figure, 2 is a battery as a power source, and 4 is a main switch that is closed when an internal combustion engine (not shown) is driven. A first electric line 6 and a second electric line 8 are connected in parallel to the main switch 4. A first power load 10 is disposed on the ground side in the middle of the first electric line 6, and a first power load 10 is disposed on the power supply side, that is, on the main switch 4 side.
a first switch 1 that closes to supply power to
2 is provided to supply and disconnect power to the first power load 10. In the middle of the second electrical circuit 8, there is a second power load 1 on the power supply side, that is, on the main switch 4 side.
4 and a second power load 1 on the ground side.
a second switch 1 that closes to supply power to 4;
6 is provided to supply and disconnect power to the second power load 14. Thereby, the first power load 10 and the second power load 14 are connected to the battery 2 in parallel.

From the ground side of the first switch 12 to the second
An electric path is provided that allows electricity to flow only toward the power source side of the switch 16. That is, the first electric path 6 between the first switch 12 and the first power load 10 and the second electric path 8 between the second power load 14 and the second switch 16 are shown by broken lines. The third electrical circuit 18 is used to connect the terminals as shown in FIG. In the middle of this third electric line 18, a diode 20 whose forward direction is directed toward the second electric line 8, and a third power load 22 that is to idle up the internal combustion engine (not shown) are arranged. do. Thereby, the third power load 22 is connected in parallel to the first power load 10 and also to the second power load 14, and the third power load 22 is connected in parallel to the first power load 10 and the second power load 14. An AND circuit 24 is formed to supply power to the third power load 22 in order to idle up the internal combustion engine when power is supplied. Therefore, the AND circuit 24 is formed by the third electric path 18 and the diode 20 without providing a relay or the like.

Next, the effect will be explained.

If only the first switch 12 is closed when the main switch 4 is closed, power is supplied to the first power load 10, but since the second switch 16 is open, power is supplied to the third power load 22. power is not supplied. Further, when only the second switch 16 is closed, power is supplied to the second power load 14, but the third electric path 18 is provided with a diode 20 whose forward direction is directed toward the second electric path 8. Therefore, electricity does not flow, and power is not supplied to the third power load 22. Therefore, when only one of the first switch 12 or the second switch 16 is closed, power is not supplied to the third power load 22,
Does not increase idle.

When the first and second switches 12, 16 are both closed and power is supplied to the first and second power loads 10, 14, the third electrical path 18 is connected from the first electrical circuit 6 to the second electrical circuit 6. A current will flow in the direction of the electric path 8. As a result, power is supplied to the third power load 22, causing the internal combustion engine to idle up.
That is, the first switch 12 and the second switch 1
6, power is supplied to the third power load 22 and the third power load 22 is idled up in order to eliminate the inconvenience caused by carrying the power load.

In this way, the idle can be increased by the third electric circuit 18 and the diode 20 without providing a relay or the like. Therefore, there is no need to provide special parts such as relays, and the structure is simple, reducing costs and making maintenance and inspection easy.
The space can be smaller than before.
In addition, the first power load 10 and the second power load 1
By arbitrarily combining 4, it is possible to cope with fluctuations in power load that vary depending on the season.

FIG. 3 shows a more concrete example of this invention. The two power loads to be idle-up can be set in various combinations, and the first power load is a 10A defogger.
In this example, the air supply motor 14A of the heater is set as the second power load. Furthermore, an electric negative pressure switching valve (hereinafter referred to as "VSV") 22A of the idle up mechanism is set as a third power load. Note that 26 is another power load, and 28 is its switch.

According to this configuration, it is possible to cope with seasonal fluctuations in power load. That is, in response to the power load carried by the use of the defogger 10A and the heater electric motor 14A in the winter, power is supplied to the VSV 22A to increase the idle, thereby improving the charging ability against power consumption and preventing engine malfunction. Furthermore, since the defogger 10A and the heater electric motor 14A are not used during the warm season, the idle does not increase, and the fuel consumption rate during the warm season can be improved.

[Effect of idea]

As described above, according to this invention, power can be supplied to the third power load that is to idle up the internal combustion engine with a simple configuration without providing special parts such as relays. Therefore, the configuration of the idle-up device is simplified, costs are reduced, maintenance and inspection are facilitated, reliability is improved, and installation space can be reduced. Further, since the two power loads can be arbitrarily combined, it is possible to cope with seasonal fluctuations in the power load. For example, by combining a heater and a headlamp, or a rear defogger and a headlamp, it is possible to raise the idle only in the winter without raising the idle in the summer, making it possible to cope with seasonal changes in the power load, and charging during the winter. Capacity can be improved, engine malfunction can be prevented, and fuel consumption rate in warm seasons can be improved.

[Brief explanation of drawings]

Figures 1 to 3 show examples of this invention.
Figure 2 is a circuit explanatory diagram showing the basic configuration, and Figure 3 is a circuit explanatory diagram showing the basic configuration.
The figure is a circuit explanatory diagram showing a specific configuration. FIG. 4 is an explanatory diagram of a conventional circuit. In the figure, 2 is a battery, 6 is a first electric circuit,
8 is a second electric path, 10 is a first power load, 12 is a first switch, 14 is a second power load, 16 is a second switch, 18 is a third electric path, 20 is a diode, and 22 is a The third power load 24 is an AND circuit.

Claims (1)

[Scope of utility model registration request] A first electric path and a second electric path are connected in parallel to a power source, and a first power load is disposed on the ground side in the middle of the first electric path, and a first power load is connected to the power source side. A first contact that closes to supply power is provided, and a second contact is provided on the power supply side in the middle of the second electrical path.
A power load is installed, and the second power load is installed on the ground side.
A second contact is disposed to close to supply power to the first power load and the second power load, and the first contact and the second contact are configured to idle up the internal combustion engine when power is supplied to the first power load and the second power load. A third electric path is provided that connects the first electric path between the first power loads and the second electric path between the second contact and the second power load, and in the middle of this third electric path, the An idle-up device for an internal combustion engine, characterized in that a diode whose forward direction is directed toward a second electrical circuit, and a third power load for increasing the idle of the internal combustion engine.