Basic Vehicle Technologies 2: Chassis Exam Questions And Answers

What's the purpose of benchmarking in the vehicle manufacturing process? - ANS 1. Identify competitive strengths and weaknesses of competitive vehicles. 2. Manufacturers set standards by which they will judge their own new vehicle. What three functions should tire tread design provide on a wet surface? - ANS 1. Provide the actual grip. 2. Channel away most of the water via large grooves in the tread. 3. Mop up remaining water through channels and small slits in the tread. What does Active Understeer Control do? - ANS 1. Makes it easier for the vehicle to follow the course the driver intends. 2. Uses Vehicle Dynamic Control to gently apply the brakes to the inside wheels. How do run-flat tires work? - ANS Use reinforced sidewalls to support vehicle weight if there's loss of air pressure What does the structural rigidity of a chassis affect? - ANS 1. Reduces squeaks and rattles caused by chassis flex. 2. Contributes to noise reduction. 3. Allows the body's crumple zones to absorb impact energy in a controlled manner. What are the advantages of electric power-assisted steering? - ANS 1. Compact design allows for smaller engine bay. 2. Varies the amount of power assist based on vehicle speed. How does Active Trace Control help enhance steering response? - ANS Uses Vehicle Dynamic Control to selectively apply brake pressure. What does the Utili-track system do? - ANS Customize cargo area by varying attachment points within tie-down range What is the advantage of a 4-wheel independent suspension? - ANS A disturbance in one wheel has no limited effect on the opposite wheel What are the features of power steering? - ANS 1. Includes speed-sensitive function for ease of steering. 2. Reduces steering effort, especially in low-speed turns and parking maneuvers. What do stabilizer bars do? - ANS 1. Help keep the vehicle level during cornering. 2. Transfer force from the one side of the body to the other. 3. Link the left and right sides of the suspension together. What does an independent strut front suspension do? - ANS 1. Combines a coil spring and shock absorber / strut into one unit. 2. Provides the most comfortable ride on a wide variety of road Surfaces. 3. Provides excellent durability and takes up little space. What are Noise, and Harshness (NVH) countermeasures that Nissan uses? - ANS 1. Gas-filled struts used as hydraulic body dampers. 2. Tuned intake systems that use resonators. 3. Asphalt sheeting, glass wool, PET or composite fibers and soft foam. Why are Nissan designed to understeer? - ANS A limited amount can make a vehicle's handling easier for the driver to predict. What are the advantages of disc brakes compared to drum brakes? - ANS 1. Dissipate heat more rapidly. 2. Break pads wipe water away from rotor as it spins. 3. Provide more effective stopping action. Which vehicles should not be flat towed with all four wheels on the ground? - ANS Those with automatic transmission. What are the basic types of trailer hitches? - ANS Fixed-ball, receiver, and bed-mount Shock absorbers are attached to the _______ and _______. - ANS Chassis; suspension How do Drum brakes work? - ANS Hydraulic pressure through wheel cylinders forces brake shoes against drum What does electronically driven hydraulic power steering do? - ANS 1. Uses electricity instead of engine power to run the steering pump.