JPH037552Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a sub-engine type vehicle cooling system installed in the lower part of the vehicle body.
This invention relates to an emergency stop device for a vehicle cooling engine that prevents damage to the vehicle cooling engine caused by water that inevitably accumulates in the air cleaner being sucked into the vehicle cooling engine.

[Prior Art] The power source of the cooling system of a large passenger vehicle such as a tour bus mainly uses a sub-engine system equipped with an engine exclusively for cooling.

By the way, in a conventional vehicle cooling system, as shown in FIG. 1, a radiator 8, compressor 4, condenser 6, evaporator 5, etc.
Generally, the air cleaners are integrated into a frame and attached to, for example, the lower part of the center floor 2 of the vehicle body 1, and the air taken in from the air cleaner 11 is guided to the engine 3 for cooling the vehicle. In addition, in the figure, the reference numeral 9 indicates a cold air duct 9 for guiding cold air into the cabin, and the reference numeral 10 indicates a blowout grill.

[Problems to be solved by the invention] The above-mentioned conventional vehicle cooling system takes in air from an air cleaner placed close to the road surface under the floor of the vehicle body, so rainwater, hydrated mud, etc. are mixed in and water flows into the air cleaner. Gradually accumulates inside. When the accumulated water reaches a certain amount, the water is sucked into the continuously operated vehicle cooling engine, and the sucked water causes damage to the vehicle cooling engine.

The present invention was devised in view of the above-mentioned problems of the conventional technology, and is intended to prevent engine troubles such as damage caused by water being sucked into the cooling engine of a vehicle during operation. The purpose of the present invention is to provide an emergency stop device for a vehicle cooling engine.

[Means for Solving the Problems] In order to achieve the above object, the emergency stop device for a vehicle cooling engine of the present invention includes:
An engine stop means provided in a power or fuel supply system to a vehicle cooling engine and capable of shutting off the supply system and stopping the vehicle cooling engine when actuated; and water accumulated in an air cleaner of the vehicle cooling engine. When the amount of water exceeds the specified moisture content,
and a liquid amount sensing means for activating the engine stopping means.

[Function] In the present invention configured as described above, when the water accumulated in the air cleaner of the vehicle cooling engine exceeds a predetermined moisture content, the liquid level sensing means activates the engine stop means. The power or fuel supply to the engine is cut off. As a result, the vehicle cooling engine immediately stops.

[Example] Next, an example of the present invention will be described with reference to the drawings.

As shown in Fig. 2, the vehicle cooling engine 3
The outside air is sucked into the air cleaner 11 from the air intake 7. A starter switch 14 of the vehicle cooling engine 3 and a switch 15 serving as engine stop means are connected in series to an electric circuit that is a power supply system that connects the vehicle power supply 13 and the electric device 12 of the vehicle cooling engine 3. configured.

As an embodiment of the switch 15 is schematically shown in FIG. 3, the switch 15 is composed of an outer case supported within the air cleaner 11, an electrical contact 17, etc. inside the outer case. A float 16 serving as a liquid level sensing means floats on the surface of the water collected in the air cleaner 11 and has the electrical contact 17 at its upper end. 16, the vehicle power source 1
3 and the electrical device 12 of the vehicle cooling engine 3.

Next, the operation of this embodiment will be explained.

As shown in FIG. 2, the starter switch 14
is in the "contact" state, and when the amount of water accumulated in the air cleaner 11 is zero or less than a predetermined amount of water, the float 16 is in a low position and the electrical contact 17 is closed, and the vehicle cooling engine 3 is started and operated. does not cause any problems. When the amount of water accumulated in the air cleaner 11 exceeds a predetermined amount of water, the electric contact 17 is actuated and opened due to the upward movement of the float 16 due to the increased amount of water, and current is supplied to the electrical device 12 of the vehicle cooling engine 3. Since it is shut off, the vehicle cooling engine 3 immediately stops.

In the above embodiment, the float 16 that rises as the amount of accumulated water increases is used as the liquid level sensing means, and the switch 15 interlocked with the float 16 cuts off the current to the vehicle cooling engine 3. 16, it is also possible to detect a change in resistance that is proportional to the amount of immersion, and use the change in resistance to connect and disconnect the electric circuit. Also,
As an engine stop means, a switch 1 as described above is used.
It is also possible to shut off the fuel supply system to the vehicle cooling engine 3 by means of the electromagnetic valve operated by the solenoid valve 5.

[Effects of the invention] Since the present invention is configured as described above, when the amount of water accumulated in the air cleaner exceeds a predetermined amount of water, the vehicle cooling engine immediately stops, so that the water sucked from the air cleaner is reduced. This has the effect of being able to reliably prevent engine troubles such as damage caused by suction into a vehicle cooling engine.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an example of the arrangement of a cooling system for a large bus; Fig. 2 is a configuration diagram of an embodiment of an emergency stop system for a vehicle cooling engine according to the present invention; It is a sectional view of the main part of the figure. 3... Vehicle cooling engine, 7... Air intake, 11... Air cleaner, 12... Electric device, 13... Vehicle power supply, 14... Starter switch, 15... Switch, 16... Float, 17
...Electrical contacts.

Claims (1)

[Scope of utility model registration request] In a sub-engine type vehicle cooling system installed at the lower part of the vehicle body, it is installed in the power or fuel supply system to the vehicle cooling engine 3, and when activated, the supply system is shut off and the vehicle cooling engine 3 is connected to the vehicle cooling engine 3.
and a liquid amount sensing means 16 that operates the engine stopping means 15 when the amount of water accumulated in the air cleaner 11 of the vehicle cooling engine 3 exceeds a predetermined water amount. An emergency stop device for vehicle cooling engines.