Many of you have seen the process of making this rotary valve engine with different intake and exhaust system and how I tried ...

The half-time shaft, powered by a belt from the crankshaft, slid and twisted the sleeve valves to align with the cylinder's intake and exhaust ports in-time with the four-stroke process.

You've probably heard about the choke valve in your car engine's carburetor, but what does this seemingly essential component ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

some modern diesel engines incorporate throttle valves in exhaust gas recirculation (EGR) systems, although this is for emissions control and not fuel delivery. By restricting intake airflow with ...