Liquid Charge Air Cooler

Charge air from the turbo flows within enclosed passages in one direction with separate cooling passages flowing cooler ambient air in a perpendicular cross flow pattern to the charge air.

Liquid charge air cooler.

An intercooler or charge air cooler is an air to air or air to liquid heat exchange device used on turbocharged and supercharged forced induction internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through isochoric cooling. If the ambient air temperature is very low the fresh water which is usually at 30 degrees celsius will heat the charged air and make it comfortable for the engine. The smallest are most often referred to as intercoolers and are attached to automobile or truck engines. Typically used as an aftercooler downstream from a turbocharger the lcac cools the hot charge air to increase the intake s air density before entering the engine.

Figure 2 is an illustration showing an air to liquid heat exchanger installed in the intake manifold of a 7 8 l 210 hp medium duty di diesel engine 305. The charge air cooler is designed to cool the charged air from something in the region of 180 c to 220 c down to around 40 c. Prior to the 1990s most charge air cooled engines utilized jacket water cooling where charge air temperatures were thermostatically controlled to about 90 c 195 f. It achieves this by using cooling water.

The wcac offers a fast engine response due to immediate cooling from the water glycol and due to installation of the wcac directly on the engine unit. High performing water cooled charge air cooler. Thus charge air coolers also serve as heaters when a ship enters cold climate areas. You have a coolant which passes through the intercooler core and is then pumped through the system to a radiator in the front of the car to have the heat.

Let us assume that the charge air cooler is cooled by fresh water lt circuit. Nissens wcac is a charge air cooler where the charge air is cooled by means of water glycol coolant from the front end module. In addition to the actual charge cooler air to water systems have a secondary cooling system much like a standard engine cooling system but dedicated specifically to the intercooler. Charge air coolers range in size depending on the engine.

Liquid cooled charge air coolers lcacs help diesel and gasoline engine manufacturers to meet stringent emissions regulations and improve engine power and fuel economy. In bar and plate designs the passages consist of plates on top and bottom with fins in between.