CHAPTER 4CHAPTER 4

FRICTIONFRICTION

CLUTCH AND ITS APPLICATIONS

Learning GoalsLearning Goals

1.1. Understand the function of Understand the function of clutches and its variation.clutches and its variation.

2.2. Understand basic clutch analysisUnderstand basic clutch analysis

3.3. Solve problems related to clutch Solve problems related to clutch and its applications.and its applications.

What is Clutch?What is Clutch?

1.0 Introduction to Clutches1.0 Introduction to Clutches

Clutch is a mechanical device used to Clutch is a mechanical device used to engage or disengaged the driving and engage or disengaged the driving and driven shaft instantaneously without driven shaft instantaneously without stopping it using clutch pedal.stopping it using clutch pedal.

Used in automobiles and automation Used in automobiles and automation industry.industry.

Types of ClutchTypes of Clutch

1. Single Plate Clutch 1. Electromagnetic Clutch

Types of ClutchTypes of Clutch

1. Multi Plate Clutch in CR-V Honda

1. Clutch Plate

How Clutch Works?How Clutch Works?

1. Clutch in Automobiles

How Clutch Works?How Clutch Works?1. Clutch in Automobiles

The flywheel is a large steel or aluminum disc. It acts as a balance weight for the engine, dampening engine vibrations caused by the firing of each cylinder and provides a surface that the clutch can contact .

The clutch disc is a steel plate, covered with a frictional material that is sandwiched between the flywheel and the pressure plate. When the clutch is engaged, the disc is "squeezed" between the flywheel and pressure plate, and power from the engine is transmitted by the disc's hub to the input shaft of the transmission.

When the clutch pedal is disengaged, the "Throw-out bearing" pushes the pressure plate's release fingers. The pressure plate pulls away from the clutch disc, disengaging the clutch, thus interrupting power flow. (See Video)

Clutch Analysis and Clutch Analysis and ExampleExample

Refer to File 1

Do It Yourself Question Do It Yourself Question in Classin Class

A multi plate clutch is to transmit 12 kW at 1500 rpm. The inner and outer radii for the plates are 50 mm and 100 mm respectively. The maximum axial spring force is restricted to 1 kN. Calculate the necessary number of pairs of surfaces if and assuming constant wear. What will be the necessary axial force?

(Ans: 3, 970 N)

QUESTION 1

Readability Analysis- Readability Analysis- Assignment 4Assignment 4

1.1. Explain clearly the operation principle of engage Explain clearly the operation principle of engage and disengage of a single plate clutch. Do a and disengage of a single plate clutch. Do a brief explanation of two types of clutches;brief explanation of two types of clutches;a) Electromagnetic clutcha) Electromagnetic clutchb) Hydraulic Operated Clutchb) Hydraulic Operated ClutchInclude diagrams and pictures where necessary.Include diagrams and pictures where necessary.

2.2. Refer to BDA 2033 Module, do questions Refer to BDA 2033 Module, do questions number 5, 9 and 10 of page 88number 5, 9 and 10 of page 88

Due submission : Due submission : 10 March 2008 before 6 10 March 2008 before 6 pmpm..

Last But Not LeastLast But Not Least

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