| diesel engine |
a type of internal-combustion engine that burns fuel oil which is ignited by being sprayed into a chamber in which highly compressed air, rather than an electric spark, provides the heat. |
| engine house |
a building in which large engines, such as fire engines or locomotives, are kept when not in use. |
| external-combustion engine |
an engine in which the combustion of fuel occurs outside the cylinder or turbine, as in a steam engine. |
| fire engine |
a motor truck that carries firefighting equipment and personnel to the scene of a fire and usu. has a pump for spraying water or chemicals. |
| internal-combustion engine |
an engine, esp. an automobile engine, that is powered by the heat and pressure produced by the burning of a mixture of fuel and air in a cylinder or cylinders. |
| jet engine |
an engine that develops thrust by the backward expulsion of a jet of fluid or gaseous products of combustion, used esp. in aircraft. |
| pulsejet engine |
a jet engine in which the pulsating thrust is provided by intermittent combustion produced by rapid opening and closing of the air intake valves. |
| radial engine |
an internal combustion engine in which the cylinders are arranged around a central shaft, formerly used to power propeller-driven aircraft. |
| Rankine-cycle engine |
a type of steam engine in which the water that is evaporated into steam is condensed and recycled, developed experimentally as a pollution-reducing alternative to the internal combustion engine. |
| reaction engine |
an engine, such as a rocket or jet engine, that develops forward thrust by the rearward expulsion of matter, esp. ignited fuel gases. |
| reciprocating engine |
an engine in which the back-and-forth motion of the pistons turns the crankshaft. |
| rotary engine |
an engine in which rotation is produced by supplying power directly to the rotary parts, such as a turbine. [2 definitions] |
| search engine |
a software program that searches a database or network, esp. the Internet, for data, files, or documents containing terms specified by the user. |
| steam engine |
an engine in which pressurized steam supplies mechanical energy, usu. by moving a piston in a closed cylinder. |
| Stirling engine |
an external-combustion engine in which the fuel ignited outside the cylinder releases heat that is transferred into the cylinder to a pressurized gas, which moves the pistons. |
| twin-engine |
powered by two engines, as an airplane. |
| V-type engine |
an automobile engine in which the cylinders are lined up in two rows that are set at an angle to each other, forming a V. |
| Wankel engine |
an internal combustion engine that features a triangular rotor revolving in a chamber, and that requires fewer moving parts and is lighter and less efficient than a piston-driven engine. |