Chapter 9

Crank throw

The stroke of an engine

Rotary

a circular motion

Stroke

a term used to represent cylinder size and the amount of movement the piston has inside the bore

Glow plug

an electrical device in diesel engine used to warm the combustion chamber when the outside temperatures are low on engine startup

Atkinson cycle

cycle in which the intake valves are kept open during the compression stroke, reducing displacement and power outage of engine

Undersquare

engine that has larger stroke than bore

Oversquare

engine with larger bore than stroke

Detonation

sounds like a ping, it is a premature ignition of mixture in engine cylinders

Selective catalytic converter

to clean diesel exhaust, an ammonia like substance is injected into the exhaust stream