Full coolant antifreeze coolant should be called, which means antifreeze coolant function.
1. Antifreeze coolant composition
by the coolant water, antifreeze additive composed of three parts.
2. Antifreeze coolant type and characteristics of
can be divided into different components according cryoprotectant alcohol type, glycerin type, glycol type, etc.Coolant type.
-alcoholic ethanol with cooling liquid (commonly known as alcohol) for antifreeze, cheap, good fluidity, simple preparation process, but low boiling point, evaporation loss is easy, easy to increase the freezing point, flammability and the like, has been gradually phased out;
glycerol coolant high boiling point, low volatility, easy to fire, toxic, corrosive small, but poor freezing point reducing effect, high cost, expensive, difficult for a user to accept, Nordic countries still using only a few;
glycol coolant is used as antifreeze ethylene glycol and a small amount of anti-foaming, anti-corrosion additives formulated integrated. Because ethylene glycol is soluble in water, may be arbitrarily formulated into various cooling liquid freezing, the minimum freezing point up to -68 deg.] C, such a cooling fluid having a high boiling point, low foaming tendencies and good viscosity-temperature properties, corrosion and scale etc., is an ideal coolant, the coolant and the current engine used abroad markets sold almost all of this type of glycol coolant. Freezing point
3. Antifreeze coolant function
In order to prevent winterized parking cars in the winter, the cooling liquid caused by ice tanks, bursting engine block, coolant required should be below about 10 ℃ lowest temperature of the region, to prepare mutated weather.
should have a corrosion preventing coolant corrosion of metal parts, to prevent the effects of aging rubber.
High-boiling (anti-boil) national standard coolant, usually having a boiling point exceeds 105 deg.] C, 100 deg.] C than the boiling point of water, the coolant can withstand higher temperatures without boiling (boil) ,To a certain extentOn cooling to meet the cooling needs of the engine high load.
Calc coolant should be as little as possible to reduce the generation of scale in a loop, to prevent blockage of the circulation duct, affect the cooling function of the cooling system.
As described above, in the selection, add coolant should be carefully. First, it should be appropriate to choose the ratio of the cooling liquid depending on the circumstances. Next, add coolant. The choice of a good proportion of cooling liquid added to the tank so that the liquid level reaches a predetermined position.
4. Note the use of antifreeze coolant
(1) when replacing antifreeze coolant, to cleanse the engine cooling system. The cooling system due to residual material, after the addition of the new antifreeze coolant cooling system does not function properly, the engine will not within the normal operating temperature range.
(2) different brands of antifreeze coolant can not be added using mixing. Antifreeze coolant formulation because different manufacturers are different. When adding antifreeze coolant, be sure to pay attention, you should add the same manufacturer of the same brand of antifreeze coolant. The use of the brand does not know the original, the original is preferably let go antifreeze coolant, the cooling system after the washed, re-adding new antifreeze coolant. As lifetime, because antifreeze coolant level drops caused by water evaporation, purified water may be added to supplement the loss of moisture.
(3) to life antifreeze coolant. Invalid or expired antifreeze coolant is oxidized to the acid, increase the corrosion of the cooling system.
(4) to use different models of different antifreeze coolant. For various vehicles and engine cooling system components selectedDifferent materials, requires antifreeze coolant materials to be used are different. It is preferable to use a vehicle manufacturing plant supporting antifreeze coolant.