KR19980023704A - Water pump operation shutoff device at the start of engine start - Google Patents

Abstract

The present invention relates to a cooling system of an automobile, and in particular, by blocking the water pump circulating the coolant in the cooling system of the automobile engine for a predetermined time at the initial start of the engine, so that the cooled engine can be warmed up quickly. A cooler system for cooling a radiator by circulating a coolant absorbing heat from an engine to a water pump through a coolant passage, the cooler system comprising: an electronic control module (3) for outputting a control signal in accordance with an operating state of the engine; And a power on / off switch 4 for automatically controlling on / off power of the water pump 1 which is automatically turned on / off by the control signal of the electronic control module 3 and transmitted to the crankshaft 2. A water pump shut-off device at the beginning of engine start.

Description

Water pump shutoff at initial engine start

Generally, a cooling system of a vehicle is a device for cooling a part of heat generated by the combustion of a mixer to prevent overheating of an engine to facilitate operation, and its purpose is to prevent premature ignition, improve charging efficiency, Prevents deformation, cracks, and smooth lubrication.

If the engine is overheated, deformation of parts, oil film breakdown of lubricant, lack of lubricating oil, engine output decrease, and engine overcooling will result in a decrease in output, fuel consumption increase, oil dilution and bearing. Phenomena such as abrasion of wealth will occur.

In addition, the engine is heated due to slippage of the fan belt, scaling on the water jacket (path), leakage of cooling water, and poor temperature thermostat.

Cooling methods include air cooling type in which the engine is directly contacted with the atmosphere to dissipate heat, and water cooling type in which the engine is cooled using ordinary soft water.

The air-cooled type has a cooling fin in a portion that is easily overheated such as a cylinder or a cylinder head, and thus, a natural air cooling system that cools with air received when driving, and cooling air flows around the engine. There is a forced air cooling system in which a shroud is installed and a cooling fan is used to cool down with a large amount of forced air.

The water cooling type is a natural water circulation system that circulates the cooling water by convection, and the cooling water is circulated in the water jacket installed in the cylinder block and the head to perform the cooling action. The temperature difference between the cooling water flowing out and the incoming and outgoing water is 80 ° C and 5-10 ° C. The forced water circulation system seals the circuit of the cooling device and pressurizes the cooling water by the pressure when the cooling water expands. By raising the radiator, the radiator can be made smaller, the engine's thermal efficiency is improved, and the number of coolant refills can be reduced. Therefore, the pressure water circulation system and the coolant used in almost all automobile engines are increased. Because of the small loss due to the leakage of oil, there is an advantage of not having to check or refill the coolant for a long time. Sealing the radiator cap, and place the storage tank of equal size and expansion of the cooling water may leak expression type of seal pressure to prevent the cooling water.

On the other hand, the amount of coolant should be checked from time to time, and the amount of coolant must be between F and L of the auxiliary tank, and if it is close to L, the designated coolant should be mixed and replenished. Replace and replace as specified in.

In addition, the cooling water is deteriorated in the floating performance and rust prevention performance over time, and if you continue to use such cooling water, freeze or rust is generated, so replace it at the interval of the inspection maintenance cycle table.

Conventional cooling system by the cooling device as described above, as shown in Figure 1, the radiator 30 for cooling the cooling water absorbed heat in the engine 10; Thermostat (60) to open and close the cooling water passage in accordance with the water temperature to properly adjust the temperature of the cooling water flowing through the cooling system and to quickly warm up the engine (10); A water pump 20 driven by a crankshaft to drive the engine 10 driving belt to forcibly circulate cooling water; It consists of cooling water passages 40 and 50.

The conventional cooling device configured as described above maintains a constant temperature of the engine 10 while the engine 10 is operating, and in order to warm up the engine 10 quickly at the time of cooling start, the coolant water is After passing through the coolant passage 50 inside the engine 10 by the pump 20, it is introduced into the radiator 30 through the thermostat 60, cooled, and then again as a heat source for heating and defrosting. Is used.

However, such a conventional cooling device has a problem in that the water pump is always driven when the engine is started so that all of the coolant in the engine head and the engine block is warmed up, and thus the temperature of the coolant is very low in cold weather such as in winter. Therefore, it takes a long time to increase the temperature of the engine, there is a problem that goes to the engine to increase the temperature of the engine, thereby causing a problem that the performance and life of the device is reduced.

Therefore, the present invention was devised to solve the above-mentioned problems of the prior art, and by blocking the water pump for circulating the coolant in a cooling system of an automobile engine for a predetermined time at the initial start of the engine, the engine being cooled is fast. It is an object of the present invention to provide a water pump shut-off device at the start of the engine, which can be warmed up within.

In order to achieve the above object, the present invention, in the cooling device system for cooling the radiator by circulating the cooling water absorbed heat in the engine to the water pump through the cooling water passage, outputting a control signal according to the operating state of the engine And a power on / off switch for automatically controlling on / off power of the water pump transmitted to the crankshaft by being automatically opened and closed by a control signal of the electronic control module.

The above configuration allows the engine to warm up in a short time by driving the water pump after a certain time has elapsed at engine start-up.

1 is a block diagram of an engine cooling apparatus of a typical vehicle;

2 is a block diagram of an apparatus for shutting off a water pump at the initial start of an engine according to the present invention.

Explanation of symbols for the main parts of the drawings

1: water pump 2: crankshaft

3: electronic control module 4: power on / off switch

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

In the initial start-up of the engine according to the present invention, the water pump shut-off device is a cooling device system for cooling in a radiator by circulating a coolant absorbing heat in the engine to a water pump through a coolant passage as shown in FIG. An electronic control module 3 for outputting a control signal in accordance with an operating state of the electronic control module 3; It is configured to include a power on / off switch 4 for automatically controlling the power of the water pump (1) transmitted to the crank shaft (2) is automatically turned on and off by the control signal of the electronic control module (3) do.

Hereinafter, the operation and effects of the present invention configured as described above will be described in detail.

When the driver starts the vehicle to drive the vehicle, the electronic control module 3 detects the opening / closing state of the throttle valve according to whether the engine is started and outputs a control signal according to the detected value.

The on / off control of the power opening / closing switch 4 provided between the water pump 1 and the crankshaft 2 is controlled on / off by the control signal output from the electronic control module 3, so that The rotation of the cooling water circulated from the water pump 1 to the crankshaft 2 is blocked.

Therefore, since it is not necessary to warm up all the coolant in the engine at the start of the engine, the engine is quickly warmed up by blocking the rotation of the water pump 1 through the power on / off switch 4.

As described in detail above, the present invention can warm up the engine which is cooled quickly by shutting off the water pump for circulating the coolant in the cooling system of the automobile engine for a predetermined time at the initial start of the engine. By warming up in time, the temperature of the engine coolant can be raised in a short time, which prevents the engine from becoming overwhelmed, thereby improving the performance and life of the device, thereby preventing safety accidents, and thus the efficiency of vehicle operation. There is an effect to improve.

The present invention relates to a cooling system of an automobile, and in particular, by blocking the water pump circulating the coolant in the cooling system of the automobile engine for a predetermined time at the initial start of the engine, so that the cooled engine can be warmed up quickly. It relates to a water pump shut-off device at the beginning of an engine start.

Claims (1)

A cooler system for cooling a radiator by circulating a coolant absorbing heat in an engine to a water pump through a coolant passage, comprising: an electronic control module (3) for outputting a control signal in accordance with an operating state of the engine; And a power on / off switch 4 for automatically controlling on / off power of the water pump 1 which is automatically turned on / off by the control signal of the electronic control module 3 and transmitted to the crankshaft 2. Water pump operation shut-off device at the start of the engine, characterized in that.