LINK-PIN END-LH 3P3044 - Caterpillar

Illustration 1 g00926747
Flow of the air/fuel mixture through the aftercooler
(1) First stage
(2) Second stage The aftercooler is located on top of the engine. The aftercooler has a two-stage core assembly. Coolant from the jacket water circuit flows through first stage (1) of the aftercooler core. Coolant from the separate circuit flows through second stage (2) of the aftercooler core.Note: For some engines that are used for cogeneration, the aftercooler's first stage may also be separate.The air/fuel mixture from the turbocharger's compressor flows through the throttle into the aftercooler's cover. The air/fuel mixture passes through the fins of the aftercooler core in order to exchange heat with the coolant. The temperature of the compressed air/fuel mixture is reduced in the aftercooler. This increases the density of the air/fuel mixture. This results in more efficient combustion.The temperature of the air/fuel mixture is initially reduced in the first stage. The second stage provides further reduction of the air/fuel mixture's temperature. The air/fuel mixture from the aftercooler is distributed through the air inlet manifold to the cylinders for combustion.