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ContinuouslyVariable

Transmission

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 Contents

 Manual Transmission

 Automatic Transmission

2

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Transmission System

• Function of transmission:- It is used to transmit engine torque to the dri

heels to drive the vehicle on the road!

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Transmission System # $ayou

%

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Manual Transmission # Ty&e

'%

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Continuously Variable Transmissi

(CVT)

• CVT &rovides in*nitenumber of gear ratios(beteen a minimum + ama,imum)!

• Shifts automatically ith anin*nite number of ratios

• Seamless &oer

delivery- no torqueinterru&tion + &oer loss

".

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CVT: Construction

 /ses a &air of a,iallyad0ustable sets of &ulley halves(Variators)

 1oth &ulleys have one*,ed and onead0ustable &ulley halve

 A belt3 is used totransfers the engine4s&oer from one shaftto another

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CVT 1elt

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CVT: Functioning•  The transmission ratio is varied by

ad0usting the s&acing beteen the&ulleys in line ith the circumferenceof the ta&ered &ulley halves!

•  The variators are

Ad0usted hydraulically!

•  5hen one &ulley is varied- the  other&ulley must ada&t itself

inversely since the length ofthe belt is *,ed!

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Advantage•There is improved acceleration due to the lower power 

  loss experienced.• Stepless transmission.•It delivers maximum torque.•Provides a smoother ride than automatic transmission

6isdvantage•Higher cost•Belt-driven CTs !"P s#stem$ have a limited amount

o% torque.

•Transmitting motion %riction causes greater wear •'equire special oil and other materials

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