KIT-SEAL 2442064 - Caterpillar

Illustration 1 g00637221
Air Inlet And Exhaust System With Turbocharger For A High Pressure Fuel System (1) Gas pressure regulator. (2) Balance line. (3) Carburetor. (4) Air cleaner. (5) Turbocharger. (6) Gas Supply. (7) Governor. (8) Aftercooler. (9) Air inlet manifold. (10) Cylinder. (11) Differential pressure regulator. (12) Exhaust manifold.
Illustration 2 g00637450
Air Inlet And Exhaust System With Turbocharger For A Low Pressure Fuel System (AA) Exhaust gas. (BB) Air and gas to cylinders. (CC) Gas supply. (DD) Low pressure gas. (EE) Air inlet. (1) Gas pressure regulator. (2) Balance line. (3) Carburetor. (4) Air cleaner. (5) Turbocharger. (6) Gas supply. (7) Governor. (8) Aftercooler. (9) Air inlet manifold. (10) Cylinder. (11) Differential pressure regulator. (12) Exhaust manifold.Some air inlet and exhaust systems have an attachment for a gas shutoff valve in the supply line. This valve is electrically operated from the ignition system. The valve can be operated manually in order to stop the engine. When the engine has been stopped, the valve must be manually reset.Engine installations that use dual fuel systems have similar components to the components in the above illustration. Engines that use dual fuel systems use a negative pressure regulator for one of the fuels. These engines have a load valve that can be used to adjust one of the fuels. Adjustments for differences in the BTU content of the gas that is being used can be made with the additional components. Engines that use dual fuel systems can change fuels automatically. Engine timing must be adjusted when the fuel is switched.Changes in engine load and changes in the fuel that is being burned cause changes in the rpm of the turbine wheel. Changes in engine load also cause changes in the turbine wheel of the turbocharger (5) .When the turbocharger gives a pressure boost to the inlet air, the temperature of the air increases. A water cooled aftercooler (8) is installed between the carburetor (3) and the air inlet manifold (9). The aftercooler reduces the air temperature from the turbocharger.Aftercooler
The aftercooler is installed on the top of the inlet manifold. Water flow through the aftercooler lowers the temperature of the inlet air from the turbocharger. With cooler air, an increase in weight of the air will permit more fuel to burn. This gives an increase in power.Gas Pressure Regulator
Illustration 3 g00579946
Regulator Operation (1) Spring chamber. (2) Spring. (3) Locknut. (4) Adjustment screw. (5) Balance line. (6) Outlet. (7) Main diaphragm. (8) Lever side chamber. (9) Lever. (10) Pin. (11) Valve stem. (12) Inlet.The fuel pressure regulator is on the left side of the engine. Adjustment of the regulator is made by turning the adjustment screw (4) .Gas flows through the inlet (12), main orifice, valve disc, and the outlet (6). Outlet pressure is felt in the chamber (1). This outlet pressure comes from the turbocharger boost from the balance line (5). The diaphragm (7) is pushed against the spring. This moves the lever (9) at pin (10). The valve stem (11) moves the valve disc (not