Repair 7

A Typical Reciprocating Exhaust System

Automobiles, aircraft, boats, construction equipment and power generation systems all use reciprocating engine and exhaust designs. Diesel engines also use a reciprocating exhaust system. These systems expel exhaust similarly to systems within non-diesel vehicles.

Types

Compression ignition systems are also known as diesel engines, while the other type of reciprocating systems --- spark ignition --- uses natural gas for fuel. Both systems expel gas through an exhaust manifold that bolts onto the cylinder combustion ports. Exhaust gases then travel through piping, a catalytic converter and muffler before exiting a tailpipe.

Piping Dimensions

Exhaust piping diameter and shape affect gas flow and velocity. Decreasing bends in the piping increases engine power and fuel efficiency, reducing engine heat by simplifying exhaust flow. Piping length also affects engine power and noise.

Emissions

Reciprocating engines --- especially the diesel-based variety --- expel gases high in nitrogen oxides and carbon monoxide. A catalytic converter, a component of a reciprocating exhaust system, filters exhaust gases. Carbon monoxide can be extremely harmful if inhaled.