汽车差速器中英文对照外文翻译文献

汽车差速器中英文对照外文翻译文献 Failure

analysis

of

an

automobile

differential

pinion

shaftAbstract

Differential

is

used

to

decrease

the

speed

and

to

provide

moment

increase

for

transmitting

the

coming

from

the

engine

to

the

wheels

by

turning it

according to

the

suitable angle

in

vehicles and

to

provide that

inner

and

outer

turn

differently. Pinion

gear

and

shaft

at

the

entrance

are

manufactured as

a

single

part

whereas

they

are

in

different

forms

according

to

automobile

Mirror

gear

which

will

work

with

this

gear

should

become

familiar before

the

assembly. In

case

of

any

breakdown, they

should

be

changed

as

a

pair.

Generally, in

these

systems

there

are

wear

damages

in

gears.

The

gear

inspected in

this

study

has

damage

as

a

form

of

shaft

fracture.In

this

study,

failure

analysis

of

the

differential

pinion

shaft

is

carried

out.

Mechanical

characteristics of

the

material

are

obtained

first.

Then,

the

microstructure and

chemical

compositions

are

determined.

Some

fractographic

studies

are

2020

Elsevier

Ltd.

All

rights

reserved.Keywords: Differential;

Fracture;

Power

transfer;

Pinion

shaft

1.

Introduction

The

final-drive

gears

be

directly

or

indirectly driven

from

the

output

gearing

of

the

gearbox.

Directly

driven

final

drives

are

used

when

the

engine

and

transmission units

combined

together

to

form

an

integral

construction. Indirectly

driven

final

drives

are

used

at

the

rear

of

the

vehicle

being

either

sprung

and

attached

the

body

structure

or

unsprung

and

incorporated in

the

rear-axle

casing.

The

final-drive gears

are

used

in

the

transmission system

for

the

following

reasons

(a)

to

redirect

the

drive

from

the

gearbox

or

propeller shaft

through

90°and,(b) to

provide

a

permanent gear

reduction between

the

engine

and

the

road-wheels. In

vehicles,

differential is

the

main

part

which

transmits

the

movement

coming

from

the

engine

to

the

wheels

On

a

smooth

road,

the

comes to

both

wheels evenly. The

inner wheel should turn

less

and

the

outer wheel should turn

more

to

do

the

turning without lateral

slipping

and

being

flung.

Differential, which

is

generally

placed

in

the

middle

part

of

the

rear

bridge,

consists

of

pinion

gear,

mirror

gear,

differential box,

two

axle

gear

and

two

pinion

spider

gears.A

schematic

illustration of

a

differential is

given

in

Fig,

1.

The

technical

drawing

of

pinion

the

fractured

shaft

is

also

given

in

Fig,

2,

Fig.

3

shows

the

photograph

of

the

fractured

pinion

shaft

and

the

fracture

section

is

indicated.In differentials,

and

pinion

gear

are

made

to

get

used

to

each

other

during

manufacturing and

the

same

serial

number

is

given.

Both

of

them

are

on

condition that

there

are

any

problems. In

these

systems, the

common

damage

is

the

wear

of

gears

[2-4].

In

this

study,

the

pinion

of

the

differential of

a

minibus

has

been

inspected. The

minibus

is

a

diesel

vehicle

driven

at

the

rear

axle

and

has

a

passenger

of

15

people.

Maximum

engine

power

is

90/4000

HP/rpm,

and

maximum

torque

is

205/1600

Nm/rpm.

Its

transmission box

has

manual

system

(5

forward,

1