JPS58204919A - Device for introducing engine-cooling water - Google Patents

Abstract

PURPOSE:To simplify the introduction of water, by connecting a water delivery pipe and a pipe for delivering an additive such as antifreezing liquid, to the water introduction port of a radiator through a coupling head and by automatically controlling the delivered quantities of both the water and the additive depending on the concentration of the additive. CONSTITUTION:A water tank 1 and an additive tank 2 are connected to the outlet port 8 of a coupling head 4 through delivery pipes 5, 6 fitted with feed pumps 21, 23 and flow control valves 22, 24. A vacuum pump 12, to which a vacuum pump 14 is connected, is coupled to the top of the water tank 1 and a suction pipe 11 so that air is discharged out of a radiator 3 when water is introduced through a changeover valve 10 and a suction port 9. A controller 29, which receives the detected values of level gauges 25-28 placed in the water tank 1 and the additive tank 2, regulates the vacuum pump 14, the feed pumps 21, 23, the flow control valves 22, 24 and solenoid valves 19, 20 depending on the concentration of an additive. The delivered quantities of both the water and the additive are thus automatically controlled to set the additive at a desired concentration.

Description

[Detailed description of the invention] Regarding a cooling water injection device.

The engine coolant that is injected into the car's radiator contains
Depending on the destination, additives such as antifreeze may be mixed in appropriate amounts. The mixing ratio, that is, the additive concentration varies depending on the weather conditions of the destination, and is usually 2Q%, J j %, 44
Engine cooling water with different additive concentrations, such as J%, Jrj%, etc., is injected into the radiator depending on the respective destination. Conventionally, in order to be able to select cooling water with different additive concentrations and inject it into the radiator, separate tanks were prepared for each cooling water with an additive concentration of 1, and then The method used was to select one and inject cooling water into the radiator. However, this conventional method has the disadvantage that space is required for providing a large number of tanks and piping from these tanks, and the piping is also complicated. Furthermore, when starting the engine with water injected into the radiator, and then draining the water from the radiator and injecting cooling water with the required additive concentration, the cooling water must be injected to account for the remaining water in the radiator. There is a problem that the subsequent additive concentration changes.

The present invention aims to solve the above-mentioned problems in an engine coolant injection device for a radiator, and the engine coolant injection device according to the present invention includes an additive tank containing a cooling water additive, a tank, a connection head connectable to an inlet of an automobile radiator, an additive supply pipe connecting the additive tank to the connection head, and a water supply pipe connecting the water tank to the connection head. , the additive supply pipe is provided with an additive supply amount control device that controls the additive supply amount according to the radiator capacity and the additive concentration, and the water supply pipe is provided with a water supply amount control device that controls the additive supply amount according to the radiator capacity and the additive concentration. It is characterized in that a water supply rate control device is provided for controlling the supply rate, such that the additive and water can be supplied to the radiator from the respective supply pipes through the connection head.

According to the present invention, it is sufficient to provide two tanks, a water tank and an additive tank, and the additive concentration can be determined arbitrarily by controlling the amount of water and additive supplied from each supply pipe. be able to.

The control device for controlling the supply amount of water and additives is composed of control valves installed in each supply pipe, and in order to control the opening and closing of the control valves according to the radiator capacity and the additive degree, It is sufficient to provide an arithmetic device that can perform the necessary arithmetic operations. If necessary, it is also possible to add one or more additives, such as antifreeze and rust preventive.

Embodiments of the present invention will be described below with reference to the drawings.

The figure shows an example of using antifreeze as an additive, and a water tank 1 and an antifreeze tank 2 are provided to contain required amounts of water and antifreeze. Furthermore, a connection head 4 is provided which is connected to the inlet 3a of the radiator 3, and these four connection heads are connected to the water tank 1 through a water supply pipe 5 and to the antifreeze tank 2 through an antifreeze supply pipe 6, respectively.

A switching valve 7 is provided in the connection head 4 and a supply pipe 5.6
is connected to the discharge port 8 of the head 4 via this switching valve 7.

The connection head 4 is provided with a suction port 9 on one side, and the suction port 9 is connected to a suction pipe 11 via a switching valve 10 provided within the head 4 . A vacuum tank 12 is provided above the water tank 1, and this vacuum tank 12 is connected to a vacuum line 13.
It is connected to the vacuum pump 14 by. Moreover, the true tank 12 is also connected to the upper part of the water tank 1 and the suction pipe 11.

The switching valves 1110 are pneumatically operated, and these switching valves I
, 10, the pneumatic supply pipe 1 runs from the pneumatic pressure source 15 to the switching valve 7.10, touching the pressure regulator 16.
7.18 are provided respectively. A solenoid valve 19 is provided in the air pressure supply pipe 17 leading to the switching valve 7.
When 9 is energized, the switching valve 7 is actuated to connect the supply pipe 5.6 to the outlet 8. Similarly, the air pressure supply pipe 18 is provided with a solenoid valve 20, and when the solenoid valve 20 is energized,
The switching valve 10 operates to connect the suction pipe 11 to the suction port 9. The suction pipe 11 and the suction port 9 are for discharging the air inside the radiator 3 according to the amount of liquid supplied from the discharge port 8, and preventing the pressure inside the radiator from increasing.

A water supply pump 21 and an electrically controlled flow rate control valve 22 are provided in the water supply pipe 5, and the flow rate of water flowing in the water supply pipe 5 is controlled according to the amount of current given to the valve 22. It is now possible to do so.

The antifreeze supply pipe 6 is provided with an antifreeze supply pump 23 and an electrically controlled flow rate control valve 24 so that the flow rate of the antifreeze in the supply pipe 6 can be controlled according to the amount of current supplied to the valve 23. It has become. Level gauge 25.26 is in water tank 1, t? ,=Level gauges 27 and 28 are provided in the antifreeze tank 2.

A control device 29 is provided for electrical control.

This control device 29 may be configured by a microcomputer, for example, and includes level gauges 25, 26, 27, 2
The output of 8 is connected to this control device 29. The control device 29 performs necessary calculations based on the capacity of the radiator 3 and the desired antifreeze concentration, determines the supply amount of water and antifreeze, and controls the vacuum pump 14, the pump 21.23, the flow control valve 22.24, and the electromagnetic Valves 19 and 20 are each supplied with an output current to supply water and antifreeze to the radiator 3.

At this time, the current supplied to the flow control valves 22 and 23 is
It is desirable to specify that the water and antifreeze supplies start and end at the same time.

As described above, according to the present invention, separate tanks are provided for water for engine cooling and for additives such as antifreeze added to this water, and these tanks are connected to the water supply pipe and the additive, respectively. The agent supply pipes are connected to a connection head connected to the inlet of the radiator, and each supply pipe is provided with a respective feed rate control device to supply water and additives according to the radiator capacity and the desired additive concentration. Since the concentration of the additive is controlled, there is no need to prepare cooling water with several additive concentrations in advance, and there is no need to provide a large number of cooling water tanks and associated piping. Further, since the required amount of water and additive are supplied according to the radiator capacity and additive concentration, it is possible to accurately control the additive concentration.

[Brief explanation of drawings]

The drawing is a schematic diagram of an engine coolant injection device showing an embodiment of the present invention. 1...Water tank 2...Antifreeze tank 3...Radiator 4...Connection head 7...Switching valve 22.24... ...Flow rate control valve 29...Control device patent applicant Toyo Kogyo Co., Ltd.

Claims (1)

[Claims] an additive tank accommodating a cooling water additive; a water tank;
a connection head connectable to an inlet of a radiator of a motor vehicle; an additive supply pipe connecting the additive tank to the connection head; and a water supply pipe connecting the water tank to the connection head; The additive supply pipe is provided with an additive supply amount control device that controls the additive supply amount according to the radiator capacity and additive concentration, and the water supply pipe is provided with an additive supply amount control device that controls the water supply amount according to the radiator capacity and additive concentration. 1. An engine cooling water injection device, characterized in that a water supply amount control device for controlling the water is provided, and the water is supplied to the radiator from respective supply pipes for additives and water through a connection head.