Some diesel engines also use throttle valves to provide smoother engine shutdown by cutting off the air supply during the shut-off process. This reduces vibration and potential engine damage.

One of the turbo engine's most iconic sounds is called the turbo flutter. That "stu-tu-tu-tu" sound the Nissan Skyline GTR R34 makes as the throttle closes is the sound of compressed air escaping ...

At idle, vacuum from behind the throttle tries to lift the valve's piston up ... As conventional diesel engines have no throttle plate and function differently, a dump valve is not required.

While conventional engines control air intake using a throttle valve, VVEL-equipped engines do this directly at the intake valves, continuously controlling their valve events and lifts.

Learn more about the Fiat's Multiair Valve-Lift System Explained - Article. Read a review and see pictures of the Fiat's Multiair Valve-Lift System Explained at Car and Driver.

In turn, it fed fuel into the engine until it floated its valves after eight minutes at 4,500 rpm, which is way higher than these compression-ignition lumps were ever meant to reach.

A power valve plug can often work well in racing situations, where the engine only ever operates at wide-open throttle. However, it is a lousy compromise for street-driven engines that creates a ...

Though most diesel engines lack throttle bodies, they do employ similar components. For instance, some modern diesel engines incorporate throttle valves in exhaust gas recirculation (EGR) systems ...