Glossary “inertia weight” Definition:
A small, steel flywheel used to dampen drive-line vibrations on certain applications; generally located on the slip yoke, drive pinion yoke, or near an end of the drive shaft.
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inertial scavenging
Glossary “inertial scavenging” Definition:
An exhaust system that uses the momentum of flowing gases to pull more gasses through.
inert gas shield
Glossary “inert gas shield” Definition:
An inert gas shield (argon, helium or CO2) is applied over the arc during welding to prevent oxidation of the metal.
inertia
Glossary “inertia” Definition:
1). The property of a moving object that causes it to resist any change in speed or direction. 2). The tendency of an object in motion to keep moving and the tendency of an object at rest to remain at rest.
induction hardening
Glossary “induction hardening” Definition:
A process of hardening the surface of a part by placing electric coils next to it.
inductive pick-up
Glossary “inductive pick-up” Definition:
The pickup for an electrical meter that wraps around the wire or cable being sensed and measures current flowing through the circuit, using the princples of magnetism.
inductive reactance
Glossary “inductive reactance” Definition:
An opposing current or voltage created in a conductor whenever there is a charging current flow in that conductor.
inductive reluctance
Glossary “inductive reluctance” Definition:
A statement of a material’s ability to strengthen the magnetic field around it
inert gas
Glossary “inert gas” Definition:
A gas that normally does not combine chemically with materials.
induction backfire
Glossary “induction backfire” Definition:
Momentary or brief series of “popping” sounds from the intake system. Can be caused by incorrect A/F mixture, ignition spark timing, valve timing, or valve leakage.
induction coil
Glossary “induction coil” Definition:
An electrical device that receives low battery voltage in its primary winding and delivers pulsating high voltage in its secondary winding as the primary field is energized and collapsed by use of a set of points.
induction hardened valve seats
Glossary “induction hardened valve seats” Definition:
Integral valve seats that are harder that the surrounding area of a cylinder head.
indirect injection (IDI)
Glossary “indirect injection (IDI)” Definition:
A system in which fuel is injected into a prechamber, where it is ignited before entering the main combustion chamber.
Indium
Glossary “Indium” Definition:
Chemical element, symbol In. With three electrons in its valance shell, it is used as a doping agent to create a “P” type semiconductor.
inductance
Glossary “inductance” Definition:
The capability of a coil to store energy in a magnetic field surrounding it which results in a property that tends to oppose any change in the existing current flow in the coil.
induction
Glossary “induction” Definition:
1). Intake. 2). Process whereby an electromagnet or electrically charged object transmits magnetism or an electric current to a nearby object without making physical contact. 3). Process by which a voltage is induced into a conductor by a changing magnetic field.
indicated mean effective pressure (IMEP)
Glossary “indicated mean effective pressure (IMEP)” Definition:
The average of the pressures developed in the cylinders during the four-stroke cycle, intake, combustion, exhaust, and compression.
indicated speed
Glossary “indicated speed” Definition:
Vehicle speed as indicated on a speedometer.
indicated torque
Glossary “indicated torque” Definition:
Torque as calculated from the indicated mean effective pressure, which is an actual indication of output developed within the cylinders.
indirect damage
Glossary “indirect damage” Definition:
Damage caused by the shock of the collision forces traveling through the body and inertial forces acting upon the rest of the unibody.