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Ignition timing

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In a spark ignition internal combustion engine, Ignition timing refers to the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke. [1]

52 relations: Air–fuel ratio, Back-fire, Car controls, Carburetor, Centrifugal force, Chrysler, Combustion, Contact breaker, Crankshaft, Dead centre (engineering), Dino (automobile), Distributor, Dynamometer, Electric spark, Emission standard, Engine control unit, Engine knocking, Fiat Dino, Firing order, Four-stroke engine, Fuel injection, Graph of a function, Ignition coil, Ignition system, Inertia, Internal combustion engine, Manifold vacuum, Membrane, Motronic, Octane rating, Operating temperature, Original equipment manufacturer, Poppet valve, Porsche 911 (classic), Pressure, Real-time computing, Revolutions per minute, Robert Bosch GmbH, Rotational speed, Spark plug, Spark-ignition engine, Stroke (engine), Temperature, Throttle, Timing light, Timing mark, Turbocharger, Two-stroke engine, Valve timing, Volumetric efficiency, ..., Wasted spark, Wide open throttle. Expand index (2 more) »

Air–fuel ratio

Air–fuel ratio (AFR) is the mass ratio of air to a solid, liquid, or gaseous fuel present in a combustion process.

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Back-fire

A back-fire or backfire is combustion or an explosion produced by a running internal combustion engine that occurs in the air intake or exhaust system rather than inside the combustion chamber.

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Car controls

Car controls are the components in automobiles and other powered road vehicles, such as trucks and buses, used for driving and parking.

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Carburetor

A carburetor (American English) or carburettor (British English; see spelling differences) is a device that mixes air and fuel for internal combustion engines in the proper ratio for combustion.

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Centrifugal force

In Newtonian mechanics, the centrifugal force is an inertial force (also called a "fictitious" or "pseudo" force) directed away from the axis of rotation that appears to act on all objects when viewed in a rotating frame of reference.

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Chrysler

Fiat Chrysler Automobiles US LLC (commonly known as Chrysler) is the American subsidiary of Fiat Chrysler Automobiles N.V., an Italian-American automobile manufacturer registered in the Netherlands with headquarters in London, U.K., for tax purposes.

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Combustion

Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

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Contact breaker

A contact breaker (or "points") is a type of electrical switch, and the term typically refers to the switching device found in the distributor of the ignition systems of spark-ignition internal combustion engines.

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Crankshaft

A crankshaft—related to crank—is a mechanical part able to perform a conversion between reciprocating motion and rotational motion.

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Dead centre (engineering)

In a reciprocating engine, the dead centre is the position of a piston in which it is farthest from, or nearest to, the crankshaft.

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Dino (automobile)

Dino was a marque for mid-engined, rear-drive sports cars produced by Ferrari from 1968 to 1976.

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Distributor

A distributor is an enclosed rotating shaft used in spark-ignition internal combustion engines that have mechanically-timed ignition.

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Dynamometer

A dynamometer or "dyno" for short, is a device for measuring force, torque, or power.

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Electric spark

An electric spark is an abrupt electrical discharge that occurs when a sufficiently high electric field creates an ionized, electrically conductive channel through a normally-insulating medium, often air or other gases or gas mixtures.

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Emission standard

Emission standards are the legal requirements governing air pollutants released into the atmosphere.

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Engine control unit

An engine control unit (ECU), also commonly called an engine control module (ECM), is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance.

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Engine knocking

Knocking (also knock,, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.

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Fiat Dino

The Fiat Dino (Type 135) was a front-engine, rear-wheel-drive sports car produced by Fiat from 1966 to 1973.

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Firing order

This is achieved by sparking of the spark plugs in a gasoline engine in the correct order, or by the sequence of fuel injection in a Diesel engine.

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Four-stroke engine

A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft.

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Fuel injection

Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector.

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Graph of a function

In mathematics, the graph of a function f is, formally, the set of all ordered pairs, and, in practice, the graphical representation of this set.

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Ignition coil

An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system that transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel.

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Ignition system

An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines oil-fired and gas-fired boilers, rocket engines, etc.

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Inertia

Inertia is the resistance of any physical object to any change in its position and state of motion.

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Internal combustion engine

An internal combustion engine (ICE) is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit.

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Manifold vacuum

Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere.

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Membrane

A membrane is a selective barrier; it allows some things to pass through but stops others.

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Motronic

Motronic is the trade name given to a range of digital engine control units developed by Robert Bosch GmbH (commonly known as Bosch) which combined control of fuel injection and ignition in a single unit.

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Octane rating

An octane rating, or octane number, is a standard measure of the performance of an engine or aviation fuel.

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Operating temperature

An operating temperature is the temperature at which an electrical or mechanical device operates.

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Original equipment manufacturer

An Original Equipment Manufacturer (OEM) is a company that produces parts and equipment that may be marketed by another manufacturer.

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Poppet valve

A poppet valve (also called mushroom valve) is a valve typically used to control the timing and quantity of gas or vapour flow into an engine.

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Porsche 911 (classic)

The original Porsche 911 (pronounced nine eleven, Neunelfer) was a luxury sports car made by Porsche AG of Stuttgart, Germany.

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Pressure

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

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Real-time computing

In computer science, real-time computing (RTC), or reactive computing describes hardware and software systems subject to a "real-time constraint", for example from event to system response.

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Revolutions per minute

Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min) is the number of turns in one minute.

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Robert Bosch GmbH

Robert Bosch GmbH, or Bosch, is a German multinational engineering and electronics company headquartered in Gerlingen, near Stuttgart, Germany.

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Rotational speed

Rotational speed (or speed of revolution) of an object rotating around an axis is the number of turns of the object divided by time, specified as revolutions per minute (rpm), cycles per second (cps), radians per second (rad/s), etc..

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Spark plug

A spark plug (sometimes, in British English, a sparking plug, and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine.

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Spark-ignition engine

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

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Stroke (engine)

In the context of an Internal combustion engine, the term stroke has the following related meanings.

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Temperature

Temperature is a physical quantity expressing hot and cold.

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Throttle

A throttle is the mechanism by which fluid flow is managed by the constriction or obstruction.

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Timing light

A timing light is a stroboscope used to dynamically set the ignition timing of an Otto cycle or similar internal combustion engine equipped with a distributor.

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Timing mark

A timing mark is an indicator used for setting the timing of the ignition system of an engine, typically found on the crankshaft pulley (as pictured) or the flywheel, being the largest radius rotating at crankshaft speed and therefore the place where marks at one degree intervals will be farthest apart.

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Turbocharger

A turbocharger, or colloquially turbo, is a turbine-driven forced induction device that increases an internal combustion engine's efficiency and power output by forcing extra air into the combustion chamber.

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Two-stroke engine

A two-stroke (or two-cycle) engine is a type of internal combustion engine which completes a power cycle with two strokes (up and down movements) of the piston during only one crankshaft revolution.

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Valve timing

In a piston engine, the valve timing is the precise timing of the opening and closing of the valves.

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Volumetric efficiency

Volumetric efficiency (VE) in internal combustion engine engineering is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold.

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Wasted spark

The wasted spark system is an ignition system used in some four-stroke cycle internal combustion engines.

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Wide open throttle

Wide open throttle (WOT) refers to an internal combustion engine's maximum intake of air and fuel that occurs when the throttle plates inside the carburetor or throttle body are "wide open", providing the least resistance to the incoming air.

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References

[1] https://en.wikipedia.org/wiki/Ignition_timing

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