- I -

In-line Steering Gear

A type of integral system.

In-phase

The in-line relationship between the forward coupling-shaft yoke and the drive-shaft slip yoke of a two-piece drive line.

In-vehicle Sensor

A term used for in-car sensor.

In-vehicle Temperature Sensor

A term used for in-car sensor or in-car temperature sensor.

Inactive Spring Coil

Inactive coils located at the end of a spring introduce force into the spring when a wheel strikes a road irregularity.

Inadequate Crush

An insufficient crush on a pair of bearing shells allowing excessive clearance between the bearings and the shaft.

Inadequate Joint Penetration

Joint weld penetration that is sufficient to properly bond the base metals.

Inboard

Toward the centerline of the vehicle.

Incandescence

Glowing due to heat.

Incandescent

That which gives light or glows at a white heat.

Incandescent Lamp

An electric lamp or bulb containing a thin wire or filament of infusible conducting material.

Inch Pound

The amount of work required to rase one pound one inch.

Inch-pound

An English measure of torque.

Inches Of Mercury (in-Hg)

A term used to designate a vacuum on the English scale.

Inches Of Water Column (in-H2O)

An engineering term used to designate pressure such as inches of mercury or kilo Pascals.

Inclined Surface

1. A slope or slanted surface 2. A valve rotator.

Included Angle

1. Sum of the kingpin or ball-joint inclination angle and the camber angle of a vehicle's front wheel. 2. The sum of the camber angle added to the steering axis-inclination angle. 3. The angle included between the outer surfaces of the link-plate contours of a silent chain that meshes with the sprocket tooth form.

Incomplete Joint Penetration

Joint penetration that is unintentionally less than the thickness of the weld joint.

Incompressible

A volume of liquid that remains the same under pressure.

Independent Front Suspension (IFS)

A suspension-system method of supporting the chassis on the wheels without the use of rigid axles where the movements of the two front wheels are not interdependent; one wheel does not force the other wheel to change its plane of rotation.