Air Intake Cooling Intercooler Upgrade
The car intercooler modification is no stranger to the car enthusiasts. If the supercharged engine power is greatly upgraded, the upgrade of the car intercooler is almost necessary. But how to modify it, everyone may not know in their hearts. Next, KOHOPE will popularize the consideration of the upgrade of the car intercooler for the riders.
Because the supercharged engine uses the exhaust gas to drive the blades for supercharging, and the exhaust gas temperature is generally as high as 800~900 degrees Celsius, and the turbine body is also in a very high temperature condition. If the air at this temperature enters the cylinder without cooling, it is easy to cause the engine combustion temperature to be too high and cause problems. At the same time, the volume of the air will also be greatly reduced due to the high temperature expansion, resulting in a decrease in the supercharging effect. The effect of the car intercooler is to reduce the temperature of the intake air.
1. Improvement and upgrade of automobile intercooler
The principle of heat dissipation of the intercooler is very simple. It is to use a lot of horizontal cutting to compress the air, and then the outside air from the front of the car goes straight to the cool air, and then passes through the cooling fins to achieve the purpose of cooling the compressed air, so that the intake air temperature is closer to the outside world. Temperature, in theory, if you want to increase the cooling power of the intercooler, you only need to increase its area and thickness to increase the number, length and cooling fins, etc., to achieve this purpose.
But in fact, the longer and larger the intercooler is, the more likely the problem of intake pressure loss will occur. Therefore, how to coordinate the cooling power and pressure maintenance has become the primary task of modifying the intercooler. The modification of the intercooler is not as simple as imagined.
In order to coordinate the cooling power and the pressure maintenance method, generally start from the two parts of the fin. The first is the Tube part, which uses a style with a thicker tube diameter but a very thin tube wall. The thicker tube diameter is used to increase the smoothness of air circulation, and the thin tube wall is used to improve heat dissipation. In a tube with a thicker diameter, the method of setting fins inside is rated to increase the area of hot air touching the metal sheet to increase the heat transfer capacity, and the natural heat dissipation power can also be increased, but this design is mostly used in competitive cars. Or in the intercooler of a highly supercharged vehicle, so that too much hysteresis will not occur.
Next is the fin part. The fins of the general type of intercooler are generally straight without any openings, and the width of the car intercooler is as long as the length of the fins. The fins are the entire intercooler. The main components in the cooler are responsible for the heat dissipation function, so it is only necessary to increase the area of contact with the cold air to increase the heat exchange efficiency. Therefore, the fins of the intercooler have various forms of design, Among them, the wave-shaped or commonly known as shutter-shaped fins are the most popular. However, in terms of heat dissipation power, overlapping heat dissipation fins is the best, but the resulting wind resistance pressure is also the most obvious.
2. Matters needing attention in the process of refitting the car intercooler
Generally speaking, most of the car intercoolers used for modification are divided into the original exchange type and the large-capacity kits that need to greatly modify the pipeline equipment. The standard of the direct exchange type is similar to the original one. The only difference is that the interior and fin design are different and the thickness is slightly wider. This kit is suitable for vehicles that have not been modified by the original factory, or where the modification does not fluctuate much. It can make the original engine potential.
As for the large-capacity intercooler, in addition to increasing the headwind area to enhance heat dissipation, the thickness will be increased to ensure stable temperature, and a large funnel-shaped gas storage will be used to minimize the resistance of the airflow passing through. Of course, The occasion of using the reinforced intercooler is more applicable when the medium and large turbines are equipped. On the other hand, in addition to using air to dissipate heat, the intercooler also uses a water-cooled style. The main advantage is that its body is just in front of the throttle valve, so the intake pipe is extremely short and has the characteristics of high response, and the constant temperature of the water itself is very high, it also greatly assists the stability of the intake air temperature, especially when the front of the car has no collision effect. However, because it needs to be connected with a special water pump and a heat sink of the water tank, and the cooling fluctuation is not as large as that of direct air cooling, the air-cooled intercooler is still the main stream.