-bust, -ust, -bur; bust-, bur-, ur- +

1. The volume of a combustion chamber or the space above a piston measured in c.c. (cubic centimeters.
2. The volume of the combustion chamber when a piston is located directly at the top center.

1. In an internal combustion engine, the space above a piston in which combustion occurs.
2. In a furnace, any space in which combustion occurs, or the space in which combustion of gaseous products occurs; such as, oil or kerosine is burned to provide heat.
3. In space technology, the part of a liquid rocket, ramjet, or gas turbine engine in which the combustion of propellants takes place at high pressure.

Devices that automatically regulate firing rates at predetermined air-fuel ratios in accordance with load demands.

1. The ash residue that results from the burning of fuel, occurring on the heat-exchange surfaces of a combustion chamber.
2. A layer of ash on the heat-exchange surfaces of a combustion chamber, which comes from the burning of a fuel.

1. The ratio of heat produced in a combustion process to the heat that would be produced if a combustion were complete.
2. The ratio of heat that is actually developed in a combustion process to the heat that would be released if the combustion were perfect.

1. An engine operated by the energy released from a combustible fuel that is fed to the engine.
2. An engine that operates by the energy of combustion of a fuel.
3. Any of various types of engines driven by energy produced by combustion.

1. The study of heat liberated and absorbed by the combustion process as applied to furnace efficiency and design.
2. The design of combustion furnaces for a given performance and thermal efficiency, involving the study of the heat liberated in the combustion process, the amount of heat absorbed by heat elements, and heat-transfer rates.

1. A heating device which is used to analyze the elemental or the basic content of organic compounds.
2. A furnace that has a source of heat which is the energy released in the oxidation of fossil fuel.

The abnormality or irregularity in a process involving the combustion of a source of energy or fuel: In aerospace engineering, combustion instability may take place in a rocket engine.

In classifying combustion instabilities there are three types which are related to engines: chamber instabilities, intrinsic instabilities, and system instabilities.

In spark ignition engines, the sound and other effects associated with ignition and rapid combustion of the last part of the charge to burn, before the flame front reaches it.

1. A condensation nucleus formed as a result of industrial, transport, or natural combustion processes.
2. A condensation nucleus which arises as a result of natural or industrial combustion procedures.

The pressure created during the combustion of the air/fuel mixture in a cylinder, measured in pounds per square inch.

1. The burning rate of any substance.
2. The rate at which a substance burns.

Carbon and other deposits resulting from combustion.

1. A shock resulting from an abnormal burning of fuel in an internal combustion engine which is caused by preignition or fuel-air detonation; or in a diesel engine, the uncontrolled burning of fuel accumulated in a combustion chamber.
2. A sudden disturbance in an internal combustion engine which occurs when the fuel is being improperly burned because of ignition or control errors.