An intercooler that emphasizes performance, in addition to having good heat dissipation capacity, the reduction of pressure loss must also be taken into account. However, the reduction of pressure loss and the improvement of cooling efficiency are completely opposite in technique. For example, if an intercooler with the same volume is designed entirely from the point of view of heat dissipation, the Tube inside needs to be made finer and the number of fins should be increased. This increases air resistance; However, if we start to maintain the pressure level, and have to increase the thickness of the Tube and reduce the fin, the efficiency of heat exchange is poor, so the modification of the intercooler is not as simple as we imagine. Therefore, most of the methods to balance cooling efficiency and pressure maintenance will start from the Tube and fin
The fins of general intercooler are usually straight strips without any openings, and as long as the width of the intercooler is, the fins are as long as they are. However, since the fins play the main role of heat dissipation function in the whole intercooler, as long as the area in contact with cold air is increased, the heat exchange power can be improved. Therefore, the fins of many intercooler, Various forms of design, among which the wavy or commonly known as the louver design of the fin is the most popular. However, in terms of heat dissipation efficiency, the overlapping fins are the best, but the wind resistance is also the most obvious, so it is more common in the Japanese D1 racing car, because the speed of these racing vehicles is not fast, but it needs good heat dissipation effect to protect the engine swimming at high speed. Refit the intercooler.
Depending on the turbine capacity
After talking about the theory of the modification of the intercooler, what should be paid attention to in the actual modification. In general, retrofit intercoolers are mostly divided into original exchange types, and large capacity kits that require significant changes in piping configuration. The specifications of the direct exchange type are similar to those of the original, but the difference is that the internal Tube and fin design are different and the thickness is slightly widened. This kit is suitable for the original unmodified vehicle, or the occasion of small modification range, which can stimulate the potential of the original engine. As for large-capacity intercoolers, in addition to increasing the upwind area to enhance heat loss, they will also increase the thickness to ensure constant temperature. Taking the intercoolers produced by the Ho Yang as an example, the general type is about 5.5 to 7.5 cm (suitable for 1.6 to 2.0 liters of vehicles), and the enhanced type is about 8 to 105 cm (suitable for 2.5 liters or more vehicles). In addition, a large funnel shaped air storage Tank will be used to minimize the resistance of air flow through. Of course, the use of enhanced intercooler is more applicable when the configuration of medium and large turbines. For example, the engine below no. 6 turbine is not recommended, because the retardation will be more serious, which is not conducive to low-speed pressurization reaction. However, in NA Turbo vehicles, it is better to have a larger intercooler, because the cooling efficiency of the original design may not be enough. In addition, even the low supercharge setting can not omit the intercooler, after all, the lower intake temperature can not only prolong the engine durability, but also help the stability of power output.
On the other hand, the intercooler in addition to the use of air heat, and the use of water cooling style, Toyota Ming machine 3S-GTE is an example, its advantages are mainly its Cooler body is just located in front of the throttle, so the intake pipe is very short with high response characteristics, coupled with the water itself is very high temperature, the intake temperature is also of great help, Especially when the front of the car has no collision wind effect, such as traffic jam. However, because it needs to be connected with a special water pump and water tank heat dissipation, and the cooling range is not as large as direct air cooling, so it is still to air cooling intercooler for the mainstream.
