CALA Automotive Systems and Terminology 5 — Questions and Answers
Question 1: What distinguishes a 'CVT' (Continuously Variable Transmission) from a traditional automatic transmission?
- A CVT uses a dual-clutch system instead of a torque converter
- A CVT provides an infinite range of gear ratios using a belt and pulley system rather than fixed gear steps (Correct answer)
- A CVT is a type of manual transmission that shifts automatically under load
- A CVT uses hydraulic pressure to select from six or more preset gear ratios
Correct answer: A CVT provides an infinite range of gear ratios using a belt and pulley system rather than fixed gear steps
A CVT uses a variable-diameter pulley and belt system to provide seamless, stepless gear ratio changes across a continuous range, unlike fixed-ratio automatic transmissions.
Question 2: When evaluating a vehicle with a damaged 'subframe,' what concern does this raise for a loss adjuster?
- Subframe damage only affects cosmetic appearance and panel alignment
- The subframe is a major structural component that mounts the engine, transmission, and suspension, so damage may indicate significant hidden structural issues (Correct answer)
- Subframe damage exclusively affects the exhaust system routing
- A damaged subframe primarily signals airbag system compromise
Correct answer: The subframe is a major structural component that mounts the engine, transmission, and suspension, so damage may indicate significant hidden structural issues
The subframe (or cradle) is a critical structural member that supports the powertrain and suspension; damage to it can indicate severe structural compromise and affect repairability.
Question 3: What is 'brake fade,' and when is it most likely to occur?
- Gradual brake pad wear over time requiring periodic adjustment
- A reduction in braking effectiveness due to heat buildup in the braking system, common after repeated hard stops (Correct answer)
- The tendency of brakes to pull to one side when the rotor is warped
- Brake fluid absorption of moisture causing spongy pedal feel in cold weather
Correct answer: A reduction in braking effectiveness due to heat buildup in the braking system, common after repeated hard stops
Brake fade occurs when excessive heat reduces friction between pads and rotors or causes brake fluid to vaporize, significantly reducing stopping power.
Question 4: A damaged vehicle has a destroyed 'front impact bar' (also called a bumper reinforcement bar). What is its primary safety function?
- To provide a mounting point for the front bumper cover and grille
- To distribute and absorb low-speed impact energy before it reaches the vehicle frame rails (Correct answer)
- To trigger frontal airbag deployment in moderate to severe crashes
- To protect the radiator and cooling system from road debris
Correct answer: To distribute and absorb low-speed impact energy before it reaches the vehicle frame rails
The bumper reinforcement bar is a rigid beam behind the bumper cover designed to absorb and spread low-speed collision energy across its width before reaching structural frame rails.
Question 5: In automotive terminology, what is a 'direct injection' fuel system?
- A system that injects fuel directly into the intake manifold before the intake valve
- A system that injects fuel directly into the combustion chamber at high pressure (Correct answer)
- A carbureted system where fuel is metered directly into the throttle body
- A diesel-only system that uses mechanical injector pumps
Correct answer: A system that injects fuel directly into the combustion chamber at high pressure
Direct injection (GDI/DISI) sprays fuel at very high pressure directly into the combustion chamber rather than the intake port, improving efficiency and power.
Question 6: What does the 'MSRP' of a vehicle represent, and how is it used in total loss evaluations?
- Market Salvage and Recovery Price; the value the insurer recovers from the salvage auction
- Manufacturer's Suggested Retail Price; the original sticker price used as a baseline reference for vehicle valuation (Correct answer)
- Minimum State Registration Price; the taxable value assigned by the DMV
- Motor Safety Rating Protocol; a federal safety score that affects depreciation calculations
Correct answer: Manufacturer's Suggested Retail Price; the original sticker price used as a baseline reference for vehicle valuation
MSRP is the manufacturer's suggested retail price (sticker price) and serves as a historical reference point in total loss valuations, though actual market value is used for settlement.
Question 7: Which type of 4-wheel drive system automatically distributes torque between front and rear axles without driver input?
- Part-time 4WD with a manual transfer case lever
- Full-time AWD (All-Wheel Drive) with an active center differential (Correct answer)
- Selectable 4WD requiring the driver to engage 4-Low or 4-High manually
- Rear-wheel drive with a limited-slip differential
Correct answer: Full-time AWD (All-Wheel Drive) with an active center differential
Full-time AWD systems use an active center differential or multi-plate clutch to automatically vary torque distribution between axles based on traction conditions without driver intervention.
CALA Automotive Systems and Terminology 5
What distinguishes a 'CVT' (Continuously Variable Transmission) from a traditional automatic transmission?