In spite of decades of fine-tuning, the average internal combustion engine still converts only about 20 percent of the fuel into power and spews harmful emissions to people and the environment.

With customers and government more interested in energy efficiency and pollution, engine designers are feeling the heat. So engineers are turning to sophisticated simulation software to design and test ideas long before they build engine prototypes.

Low emissions, in particular, have become a key technical requirement for large industrial plungers turbines, especially those that run continuously.

Car’s engine depends on constant fuel under pressure to supply the fuel injection system properly. Your car’s fuel pump performs this action and is located in or near the gas tank. The injection system meters fuel through the fuel injectors and into the engine. Many engine run ability problems can be related to a weak or failing fuel pump. Problems can range from hard starting in the morning, low power and stalling while driving. Most vehicles have a fuel pressure test port somewhere on the fuel rail, use a flash light to locate it on your engine or consult a car repair manual.

DLLA138S1191 Engine has a separate camshaft for the fuel pumps that can be advanced or retarded as the engine is running. The final drive gear on the timing gear train has an internal helically toothed sleeve bolted to it. The gear wheel and sleeve can be moved axially by means of a hydraulic piston. The toothed sleeve meshes with a matched helical gear fixed to the camshaft.

The camshaft is fixed so that it cannot move axially. As the sleeve moves up and down controlled by the hydraulic piston, the fuel pump timing is advanced or retarded.

The camshaft for the inlet and exhaust valves utilizes two different profiles for economy and full power operation. The camshaft can move axially from one set of cams to the other whilst the engine is running similar to the method used for reversing the engine direction as shown on the nozzle camshaft page.