instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity

the engine that propels an automobile

a manifold that receives exhaust gases from the cylinders and conducts them to the exhaust pipe

a pipe through which burned gases travel from the exhaust manifold to the muffler

a valve through which burned gases from a cylinder escape into the exhaust manifold

a tubular acoustic device inserted in the exhaust system that is designed to reduce noise

the engine that propels an automobile

a manifold that receives exhaust gases from the cylinders and conducts them to the exhaust pipe

a pipe through which burned gases travel from the exhaust manifold to the muffler

a valve through which burned gases from a cylinder escape into the exhaust manifold

a tubular acoustic device inserted in the exhaust system that is designed to reduce noise