JP2003237384A - Cooling system for industrial vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the disadvantage that, in recent years causing environmental problems against which it is common to stop idling during a vehicle stop, a stop of wind by a fan during the engine stop also stops a cooling function, and with no measures taken against heat stagnation during the engine stop, frequent engine switching causes heat stagnation to pose an overheat problem. <P>SOLUTION: A cooling system for an industrial vehicle is so constructed that an electric fan 1 operated for a constant time after an engine stop by a timer 4 operated for the constant time when an engine key is switched off is installed, in combination with a cover 2, on a back cover 3 or on a hood 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for heat generated around an engine.

[0002]

2. Description of the Related Art Conventionally, when the engine is running and the fan is rotating, the air in the engine room and the sub-bonnet passes through the weight and is pushed out to the rear outside as shown by the arrow in FIG.

[0003]

It is common knowledge that an idle stop is performed when the vehicle is stopped in the near future when an environmental problem is caused, but when the engine is stopped, the wind of the fan stops and the cooling function also stops. However, the problem of overheating has arisen due to the heat buildup that occurs when the engine is frequently turned on and off, because the heat buildup when the engine is stopped has not been put into action. This invention made it a subject to solve such a malfunction.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in response to the above-mentioned problems, and the invention according to claim 1 is to provide an engine by a timer that operates for a certain time when the engine key is turned off. The cooling device for an industrial vehicle is characterized in that an electric fan that operates for a certain period of time after being stopped is combined with a cover and is installed above the back cover.

With such a structure, the heat accumulated in the weight is discharged by the fan, and the oil temperature, water temperature, etc. at the time of the next engine start can be reduced, which helps reduce the problem of overheating.

The invention according to claim 2 is, as the cooling device for an industrial vehicle according to claim 1, characterized in that an electric fan is installed above the bonnet.

With such a structure, the heat accumulated in the engine room is discharged by the fan, and the oil temperature, water temperature, etc. at the next engine start can be reduced, which helps reduce the problem of overheating.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a sectional view showing a first embodiment of a cooling device according to the present invention, FIG. 2 is an electric circuit diagram thereof, and FIG. 3 is a sectional view showing a second embodiment of a cooling device according to the present invention. In the first embodiment shown in FIG. 1, an electric fan 1 and a cover 2 as an exhaust duct are integrally combined and attached to a back cover 3 which is attached across a bonnet 5 and a weight 11.

While the engine 12 is operating, the heated air in the engine room covered with the hood 5 housing the engine 12 is radiated by a fan 13 directly connected to the engine 12 in a conventional manner. It is extruded to the outside through a hole at the rear of the weight 11 through 14.

However, when the engine 12 is stopped, the electric fan 1 installed on the upper portion of the back cover 3 starts to rotate,
The heated air trapped in the rear portion of the radiator 14 is forcibly discharged to the upper rear portion of the weight 11 through the cover 2 that is integrally combined.

In the electric circuit diagram as a conceptual diagram shown in FIG. 2, when the engine 12 is stopped, the switch 21 is turned on and the timer 4 starts to operate, and the power is supplied from the battery 22 for a certain time set in the timer 4. , The electric fan 1 is operated.

The second embodiment shown in FIG. 3 enables even stronger cooling than the above-described first embodiment, and the heated air trapped in the engine room is strongly forced from the top of the bonnet 5. Back cover 3 as well as discharging to the rear
The heated air, which is still contained in the interior of the car, is also discharged backwards.

After the engine 12 is turned off as described above, the electric fan 1 is used for a certain period of time to force the engine 12 to operate.
By exhausting the muffled air that has been heated by the outside, it is possible to prevent overheating according to the usage of the vehicle that frequently turns on and off.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a cooling device according to the present invention.

FIG. 2 is likewise an electric circuit diagram.

FIG. 3 is a sectional view showing a second embodiment of the cooling device according to the present invention.

FIG. 4 is a sectional view of a conventional cooling device.

[Explanation of symbols]

1 electric fan 2 cover 3 back cover 4 timer 5 bonnet

Claims (2)

[Claims] 1. A timer (4) which operates for a certain period of time when the engine key is turned off, and an electric fan (1) which operates for a certain period of time after the engine is stopped, in combination with a cover (2),
A cooling device for an industrial vehicle, which is installed on the upper part of the back cover (3). 2. The cooling device for an industrial vehicle according to claim 1, wherein an electric fan (1) is installed above the bonnet (5).