i

impact hardness

Glossary “impact hardness” Definition:
The hardening of a part caused by repeated impacts.

impact particle cleaning

Glossary “impact particle cleaning” Definition:
A method of cleaning parts using air-propelled glass beads.

immobilizer

Glossary “immobilizer” Definition:
The system in the automobile that keeps the vehicle from engine opperation by anyone but the athorized opperator. A required system in Germany

impact driver

Glossary “impact driver” Definition:
A screw driver like tool that is hit with a hammer to apply high forces to tighten or loosen screws. The body of the driver can be rotated to change the direction of the applied force, to loosen or tighten a fastener.

impact failure

Glossary “impact failure” Definition:
The failure of a part or assembly due to repeated impact or off-square seating.

I/M 240

Glossary “I/M 240” Definition:
A 240-second emissions-inspection program that used loaded-mode testing that simulates the federal urban test cycle for certifying new vehicle-emissions performance.

IMACA

Glossary “IMACA” Definition:
International Mobile Air Conditioning Association.

imbalance

Glossary “imbalance” Definition:
Improper weight distribution, or heavier on one side than the other. In a rotating component, often causes a vibration.