ASE Auto Maintenance and Light Repair
Terms & Definitions
Practice Test
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AWD
Usually the top two rings in the piston, they form a seal between the piston and cylinder wall to compress the air fuel mixture in the cylinder.
A colorless, odorless, non-combustible gas, heavier than air; can be compressed into a super cold solid known as dry ice; changes from solid to vapor at- 78.5C.
All-wheel drive
A suspension device made up of a flexible bladder containing compressed air. The airspring takes the place of a conventional coil or leaf spring. Air is supplied by onboard compressor, usually with auxiliary equipment two cents vehicle height modify the pressure in the air spring as needed.