Suspension Systems Chapter 6

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Name: ______________________ Class: _________________ Date: _________ ID: A Suspension Systems Chapter 6 True/False Indicate whether the statement is true or false. 1. Semi-independent suspensions are used on the rear of many front-wheel drive cars. 2. Springs carry the weight of the vehicle and absorb shock forces. 3. Leaf springs typically accompany MacPherson strut suspensions. 4. The motion of compression and extension, in a shock absorber, is converted into heat energy and dissipated into the atmosphere. 5. Lateral acceleration is the measurement of the vehicles ability to accelerate in a straight line. Multiple Choice Identify the choice that best completes the statement or answers the question. 6. What occurs when a wheel hits a dip or hole and moves downward? a. jounce c. deflection b. free length d. rebound 7. What controls the up-and-down movement of a vehicle as it moves down a bumpy road? a. struts c. both “struts” and “shock absorbers” b. shock absorbers d. neither “struts” nor “shock absorbers” 8. Coil spring designs and ratings are being discussed. Technician A says coil springs may have a linear rate. Technician B says coil springs may have a variable rate. Who is correct? a. A only c. both A and B b. B only d. neither A nor B 9. Strut designs are being discussed. Technician A says in the conventional MacPherson strut, the coil spring surrounds the upper part of the strut. Technician B says in the modified MacPherson strut, the coil spring is located between the control arm and frame/unibody. Who is correct? a. A only c. both A and B b. B only d. Neither A or B 10. _____ occurs when the wheel hits a dip or hole and moves downward. a. Jounce c. Compression b. Rebound d. Deflection 11. All of the following are included in a MacPherson strut assembly EXCEPT: a. shock c. ball joint b. spring d. upper steering pivot 1 Name: ______________________ ID: A 12. What is the purpose of a stabilizer bar? a. To reduce jounce c. To reduce body roll b. To reduce rebound d. Both A and B are correct 13. The coil springs of the vehicle ______. a. support the weight of the vehicle c. respond to wheel rebound b. respond to wheel jounce d. all answers are correct 14. A typical SLA suspension system has ______. a. an upper short arm and a lower long arm b. two arms of equal length c. a lower short arm and an upper long arm d. none of these answers is correct 15. Torsion bar suspension is usually found on ______. a. high-performance cars c. economy cars b. luxury cars d. 4WD trucks and SUVs Completion Complete each statement. 16. The ____________________ bar provides directional stability by reducing body roll. 17. ____________________ occurs when the wheel hits a bump and moves up. 18. ____________________ occurs when the wheel hits a dip or hole and moves downward. 19. The amount of force it takes to compress or twist a spring a certain amount is called __________ __________. 20. The wheel and tire assembly is considered _____________ weight. 2.

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Suspension System Need of Suspension
Suspension system Need of Suspension • Support the weight of the frame, body, engine, transmission, drive train, passengers, and cargo. • Provide a smooth, comfortable ride by allowing the wheels and tires to move up and down with minimum movement of the vehicle. • Work with the steering system to help keep the wheels in correct alignment. • Keep the tires in firm contact with the road, even after striking bumps or holes in the road. • Allow rapid cornering without extreme body roll (vehicle leans to one side). • Allow the front wheels to turn from side to side for steering. • Prevent excessive body squat (body tilts down in rear) when accelerating or carrying heavy loads. • Prevent excessive body dive (body tilts down in the front) when braking. 08-05-2020 2 Suspension system 08-05-2020 3 Types of suspensions • The type of suspension springs used in automobile are • Metal springs Laminated or leaf Coil Torison bar • Rubber springs • Pneumatic springs Commonly used are leaf springs and coil springs • Leaf springs are mostly used in dependent suspension system. • Coil springs and torsion bar are used in mostly in independent suspension system. • Coil springs can store about twice as much energy per unit volume compared to that of leaf spring. Thus for the same job coil springs need weight only about half that of leaf spring. • Leaf springs both cushion the shock and guide the cushioned motion. • Coil springs can serve the both provided sway bars are used along with. 08-05-2020 4 Suspension system as a two mass system 08-05-2020 5 Leaf Spring suspension • These springs are made by placing several flat strips one over the other.
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Sidecar Torsion Bar Suspension
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Suspension Strut Bearings: Rolling Bearings and Components For
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Analysis of Hollow Torsion Bar Made of E- Glass Fiber Reinforced Composite Material
Volume III, Issue V, May 2016 IJRSI ISSN 2321 – 2705 Analysis of Hollow Torsion Bar Made of E- Glass Fiber Reinforced Composite Material 1 2 M.Prakash , R.Sureshkumar 1 PG student, Gnanamani College of Technology, Namakkal 2 Assistant Professor, Gnanamani College of Technology, Namakkal Abstract: The purpose of this study is to investigate stress values of composite torsion bar suspension system. In this analytical study, round solid composite bar is taken. The analytical was carried out on a ANSYS, which was built specifically to investigate the static characteristics of torsion bar used in vehicle suspension system. This paper provides fundamental knowledge of structural test and significant parameters such as stress, total deformation, equivalent stress are highlighted. Thus the deflections were obtained analytically. The results of this study could provide a better light weight torsion suspension system. Keywords: Torsion bar, Ansys, Total deformation , Stress I. INTRODUCTION Fig 1 position of torsion bar torsion bar suspension, also known as a torsion spring manufacturing process. Torsion bars are used as automobile A suspension or torsion beam suspension, is a general term suspension. They offer easy adjustment on ride height for any vehicle suspension that uses a torsion bar as its main depending on the weight of the car. Torsion bars are weight bearing spring. One end of a long metal bar is attached essentially metal bars that function as a spring. At one end, firmly to the vehicle chassis; the opposite end terminates in a the torsion bar is fixed firmly in place to the chassis or frame lever, the torsion key, mounted perpendicular to the bar, that is of the vehicle.
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