Exhaust Gas Recirculation (EGR) valve is a critical part of modern diesel and gasoline engines since it regulates emissions and reduces nitrogen oxides (NOx).

Explore the captivating process of building a one-of-a-kind rotary valve engine, boasting cutting-edge intake and exhaust ...

Upgrading your rocker arms can be a pretty significant undertaking for the DIY mechanic, so are the performance improvements ...

The defining characteristic of a two-stroke engine is to fire (combust) every time the piston is at top dead center. This makes them highly power dense, but also notoriously makes two-stroke engines ...

Four-stroke engines, which make up 99% of engines on the road, need to breathe: air in during intake, sealed tight during compression and combustion, then air out on exhaust. So we need a system that ...

The NHTSA said that the recalled vehicles have either a 2.7L or 3.0L Nano EcoBoost engine. The engine’s intake valves could break while driving, and lead to engine failure. They were all from ...

In the early 1900s, the sliding sleeve valve engine had some advantages over tappet valve engines of the time. For example, sliding sleeve valve designs allowed larger intake and exhaust ports, a ...

There is also no need for a minimum of two valves (intake and exhaust) per cylinder as seen in a piston engine. Instead, fuel enters via intake ports that don't need to open and close.

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

Oil leaks can reach the fuel intake, cylinder head, or other hot engine parts, causing a burning oil smell inside the vehicle and excessive smoke from the exhaust when the vehicle is running. Dirty or ...

Known as the camshaft, this rotating shaft possesses eccentric lobes or cams, controlling the opening and closing of the intake and exhaust valves. As the crankshaft turns, it breathes life into the ...