n
A steam engine powered by rocket propulsion due to escaping steam, consisting of a pressure vessel mounted on a bearing, with one or more tubes which exhaust steam tangentially to the rotation axis so as to create rotation.
n
(mechanical engineering) A prechamber in an indirect injection internal combustion engine.
n
An engine put into motion by air expanded by heat.
n
A motor that does mechanical work by expanding compressed air.
n
The explosion of a bomb (or similar weapon) or large meteorite in the air rather than on the ground.
adj
(of paint used on an aircraft) Intended to reflect the thermal radiation from a nuclear detonation.
n
(attributive) A system of driving automobiles employing a gasoline engine and an auxiliary reversible dynamo. When there is an excess of power, the dynamo is driven by the engine so as to charge a small storage battery; when there is a deficiency of power, the dynamo reverses and acts as an auxiliary motor.
n
In a piston engine, the larger end (crankshaft end) of the connecting rod that connects a piston to the crankshaft.
n
(aviation, military) A specially constructed E-shaped double bay to protect aircraft against bomb blasts and splinters during enemy attacks.
n
A type of internal combustion engine in which cylinders are arranged in two banks on either side of a single crankshaft.
n
(automotive) An engine with two horizontally opposed cylinder banks, commonly used in Porsche and Subaru automobiles.
n
Part of an internal combustion engine that synchronizes the rotation of the crankshaft and the camshaft(s) so that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes.
n
A shaft fitted with cams; especially one in a piston engine that activates the valves.
adj
(aviation, of the combustor of a jet engine) Having multiple individual burner cans within a single annular pressure vessel.
n
an engine that uses the combustion of fuel to create work (movement)
n
(aviation) An aircraft component that reduces the brake fluid pressure to allow for smoother braking.
n
(mechanical engineering) Engine knocking, a type of improper combustion in gasoline piston engines.
v
(automotive) For a spark-ignition internal combustion engine to continue running after the electrical current to the spark plugs has been turned off. This occurs when there's enough heat in the combustion chamber to ignite the air and fuel mixture without a spark, the same way that heat and pressure cause ignition in a diesel engine.
n
(mechanical engineering) a piston engine that operates using the Diesel cycle, with fuel being sprayed into the hot, high-pressure air in the combustion chamber at the end of the compression stroke
n
Any electricity generator powered by a diesel engine
n
In diesel engines, a repetitive knocking sound when delayed ignition causes sudden high pressures.
adj
Describing a power system in which a diesel engine powers an electrical generator.
adj
(mechanical engineering) Powered by a diesel engine via a hydraulic transmission.
n
The replacement of petrol engines with diesel engines
adj
Pertaining to, typical of, or filled with diesel fuel.
n
(automotive) In a petrol engine, the period of time the ignition points are closed to let current flow through the ignition coil in between each spark. This is measured as an angle in degrees around the camshaft in the distributor which controls the points, for example in a 4-cylinder engine it might be 55° (spark at 90° intervals, points closed for 55° between each).
n
A synthetic diesel fuel for use in automobiles.
n
(automotive) An electrified turbocharger; a turbo with electrically assisted ramp-up, using an accessory electric motor, to bring the turbine up to speed, reducing turbo lag. (When operating in electric mode, the turbo functions like a supercharger, driven by input power instead of exhaust gas.)
n
A transverse car engine, that is, one that lies parallel to the front of the car, rather than parallel to the sides.
n
(informal) Synonym of Dieselgate (“Volkswagen automobile emissions scandal”)
n
The part of a car or other vehicle which provides the force for motion, now especially one powered by internal combustion.
n
A generator having its revolving part carried on the shaft of the driving engine.
n
An hour of operation of an engine.
n
(automotive) A type of extended-Brayton-cycle-based two-stroke engine which uses four cylinders for a combustion cycle of four strokes, but having a power stroke rate of that on regular two-stroke cycles.
n
An engine that works on the four-stroke principle.
n
(automotive) Abnormal operation of a two-stroke internal combustion engine, such that the cylinder only fires every second cycle (like a four-stroke engine). This occurs when the exhaust scavenging and inlet charging leaves a mixture in the cylinder which does not ignite, but needs a second scavenge/charge to produce an adequate mix.
n
(mechanics) A mechanism that translates a continuous rotation into an intermittent rotary motion, using an intermittent gear where the drive wheel has a pin that reaches into a slot of the driven wheel and thereby advances it by one step, and having a raised circular blocking disc that locks the driven wheel in position between steps.
n
An internal combustion engine equipped with an electric generator, used to extend the range of battery-powered electric vehicles.
n
(automotive) A motor with hemispherical combustion chambers. A piston engine internal combustion engine with hemispherical piston cylinder heads.
n
A low-speed electric generator driven by water turbines.
n
(mechanical engineering) The lowest selectable thrust or power setting of an engine.
n
The speed, measured in revolutions per minute, of an internal-combustion engine when it is running, but is at rest and without power being applied, typically with transmission in neutral.
n
(automotive, mechanical engineering) A system for activating combustion in a combustion engine.
n
A device installed in a vehicle that detects alcohol on a driver's breath and will not start the car if alcohol is present.
n
A key that starts the combustion engine of a motor vehicle.
n
(automotive) An engine that has all cylinders in one line or row.
n
Alternative form of in-line engine [(automotive) An engine that has all cylinders in one line or row.]
n
A piston or a rotary heat engine directly powered by the products of intermittent combustion of a fuel.
adj
Having an internal combustion engine.
adj
Alternative form of internal combustion engined [Having an internal combustion engine.]
adj
Of or relating to the burning of fuel with an excess of air in an internal combustion engine.
n
(automotive) An engine subassembly that consists of the assembled short block, plus the crankshaft, cylinder head, camshaft (usually), and valve train.
n
(engineering) A control device that converts nonhydraulic pressure into hydraulic pressure.
n
A machine or device that converts other energy forms into mechanical energy, or imparts motion.
n
Abbreviation of overhead valve. [(automotive) A type of internal combustion engine design which has the inlet and exhaust valves in the cylinder head (and therefore above the piston). The camshaft can be beside the pistons (with pushrods and rockers operating the valves) or above the valves, with the latter usually referred to as overhead cam.]
n
(automotive) A type of engine cylinder, with two pistons, horizontally opposed with each other, and the combustion chamber sitting centrally between the two pistons.
n
An engine using the Otto cycle.
adj
(automotive) Of an internal combustion engine design, in which the diameter of the piston is greater than its stroke distance.
adj
(of an engine) having a cylinder with a greater bore than stroke
n
A compact internal combustion engine consisting of stacked cylindrical sections.
n
Any of several types of engine having cylinders containing reciprocating pistons, in which a crankshaft is turned by pistons moving up and down within cylinders.
n
The stroke of an internal combustion engine in which compressed fuel is ignited and generates force
n
Alternative form of power stroke [The stroke of an internal combustion engine in which compressed fuel is ignited and generates force]
n
(automotive) The premature detonation of a fuel charge in Four-stroke cycle engines.
n
A device used to prime an internal combustion engine with gasoline, (especially) in airplanes.
n
a cord used to start a petrol-engined lawnmower, chainsaw or the like, where it is not feasible to have a starter motor.
n
A jet engine driven by repeated detonations within the engine.
n
(automotive) A rod in a piston engine that actuates rocker arms above the cylinder head.
n
Any of several internal combustion engines that have the cylinders arranged radially around a central crankshaft
n
Any engine that generates thrust by expelling matter, especially hot gases produced by igniting a fuel; either a rocket engine or several types of jet engine.
n
A method of starting an internal combustion engine by pulling a rope so that it uncoils around the end of the crankshaft, spinning it to crank the engine.
v
To fire the retrofire rockets of a craft.
n
A mechanism (usually one operated by electricity, compressed air, a spring, or an explosive gas), attached to an internal-combustion engine, as on an automobile, and used as a means of starting the engine without cranking it by hand.
n
(attributive) An internal combustion engine of a type resembling the diesel engine in having heavy oil for its fuel, which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion chamber, and heated for ignition by a blast lamp until the engine is running, when it is ordinarily kept red-hot by the heat of combustion.
n
(automotive) An engine subassembly comprising the portion of the cylinder block below the cylinder head gasket but above the oil pan (and including neither).
n
An engine that has only a single stage, contrasting to a compound engine, compound locomotive, or triple expansion engine, which use multiple stages to improve efficiency.
adj
(engineering) Having simplicity of action; especially acting or exerting force during strokes in one direction only; said of a reciprocating engine, pump, etc.
adj
(automotive, of an engine) having or characterised by a relatively small and lighter engine block
n
An electric motor that starts an internal combustion engine.
n
(automotive) An electrical motor, part of a modern car or truck, etc., which is used to initially turn the internal combustion engine of the vehicle to make it start.
n
A heat engine of the external combustion piston engine type.
n
(automotive) synonym of in-line engine
n
(engineering, automotive) An internal combustion engine, with six cylinders mounted in a straight line along the crankcase with all the pistons driving a common crankshaft.
n
(most commonly) Such a compressor which is specifically powered from the crankshaft.
n
A compound steam engine with two or more steam cylinders in the same axis, close to one another.
n
(uncountable) The synchronization of the firing of the spark plugs in an internal combustion engine.
n
a part of an internal combustion engine that controls the timing of the engine's valves.
n
(automotive) The reference mark on a flywheel (and engine block) indicating the engine is in the top dead center position, when aligned.
n
In a single-acting engine, an elongated hollow piston, open at the end, in which the end of the connecting rod is pivoted. The piston rod, crosshead and stuffing box are thus dispensed with.
n
An alternator powered by a steam turbine.
n
A device consisting of a pump and a turbine mounted on the same shaft.
n
A type of sports car engine that has two overhead camshafts within the cylinder head, resulting in more horsepower than a standard single cam engine.
n
(automotive) A four-stroke twin-cylinder engine with an altered firing order designed to give power pulses similar to a single-cylinder four-stroke engine.
adj
(of an engine) having two cylinders
adj
(mechanical) Of or relating to a design of internal combustion engine, the working cycle of which is completed during two strokes of the piston.
n
An engine that works on the two-stroke principle.
adj
(automotive) Of internal combustion engine designs, having piston diameter less than its stroke distance.
adj
Alternative form of under square [(automotive) Of internal combustion engine designs, having piston diameter less than its stroke distance.]
n
A two-cylinder internal combustion engine with the cylinders arranged in a configuration resembling the letter V.
n
(mechanical engineering) An internal combustion engine with sixteen cylinders in two banks of eight in a V-formation.
n
(automotive, engineering) An internal combustion engine with four piston cylinders arranged in two rows of two, arranged in a V-shape.
n
An internal combustion engine with eight cylinders forming a V shape.
n
A device that regulates the rotational speed of a shaft
n
A kind of piston engine where three or four cylinder banks use the same crankshaft, resembling the letter W when viewed from the front.
n
A rotary internal combustion engine, without pistons, using instead an epitrochoid-shaped housing.
n
(automotive, aviation) The process of squirting a small amount of water, in the form of a fine spray, into the air/fuel mixture going into a gasoline piston engine, in order to cool the engine cylinders, and, thereby, reduce detonation or knocking in high performance engines, especially when using a high compression ratio.
n
A device for converting wind power into electricity.
adj
Equipped with hidden electronic eavesdropping devices.
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