Glossary
- 120,000 miles of driving. By comparison, a vehicle certified to the Federal Tier 2 Bin 5 California LEV II emissions standards currently in effect emits about 29 pounds over the same 120,000 miles. To achieve a PZEV rating, a vehicle must meet certain criteria, including:
- Meet the Super Ultra Low Emissions Vehicle (SULEV II) standards for tailpipe pollution
- Demonstrate zero fuel-based evaporative emissions
- The manufacturer’s warranty must ensure that emissions-related components are covered for 15 years or150,000 miles, whichever comes first(1)
- Weight of the actual cargo and occupant(s) carried by a vehicle
- Payload capacities are computed by subtracting the curb weight of the vehicle from its specified Gross Vehicle Weight Rating (GVWR)
- Addition of any optional equipment or passengers adds to the vehicle weight and subtracts from the allowable payload
- Trucks with a GVWR of Class 6 or higher calculate payload by simply subtracting the weight of the completed vehicle from the GVWR to determine payload
Pillars are the vertical beams that support the roof and separate passenger compartment windows. A-pillar — First, or most forward, roof support pillar located on either side of the windshield. Also known as “windshield pillar” or “A-post” B-pillar — Center roof support that divides the front and rear doors on 4-door and wagon models. On2-door models, the B-pillar separates the door and rear quarter window/panel. On vans and wagons, the B-pillar is behind the front doors C-pillar — Rear roof supporting member on most vehicles. On CUVs/SUVs, this pillar separates the rear doors and quarter panel glass D-pillar — Vertical, or sometimes diagonal, roof support member at the extreme rear of the roof or greenhouse structure on mini vans, CUVs/SUVs and some sedan body styles
- Cylindrical component, closed at one end, and attached to the crankshaft by a connecting rod
- The force of an explosion in the cylinder’s combustion chamber forces the closed end of the piston down, causing the connecting rod to move the crankshaft
- Rotation along an imaginary lateral or transverse axis situated between the front and rear wheels of a vehicle causing the vehicle to move up or down on the side-to-side axis.
- Often, during hard braking, the vehicle’s nose will pitch down — this is called “dive” or “diving”
- During acceleration, the rear of the vehicle’s pitch is lower. This motion is called “squat” or “squatting”
Chamber between the throttle body and the passages of an intake manifold used to help promote the even
distribution of the intake charge and to enhance airflow and engine performance.