1. Net valve lift is the amount of lift (imparted to a valve) as measured at the camshaft lobe. 2. Valve duration is the period of time during which a given valve is off its respective seat and ...

While many folks view diesel engines as indestructible, they do still need maintenance. Oil changes, fuel filter replacement, and cleaning or changing the air filter are all important items when it ...

If ever you've had to choose the right camshaft for your engine you understand how tricky it can get. It boils down to knowing what you want the engine to do and how the vehicle will be driven most of ...

Valve overlap—that crucial interval when both the intake and exhaust valves are open, expressed in degrees of crankshaft rotation—is typically a fixed parameter and always a compromise. For example, ...

When it comes to the many variables of combustion inside an engine, engineers measure the timing of key events in degrees of crankshaft rotation, a relative frame of reference that remains constant ...

Getting air in and exhaust gases out of the combustion chamber under all speeds and driving conditions is essential for a car’s fuel efficiency and low emissions. That’s why virtually all Chevrolet ...

SINCE the power output of an engine is practically proportional to the weight of the charge, the object has been to increase the weight of the charge burned. The weight of charge inducted by an ...