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ChapteI:

x.

Model.495''[

Diesel Engine.:

..

for·:Tractor·"

1.

Constructional

Features

,"

Being

served

as

the

power

of

the

tractor

,model

495T

diesel

is

a

version

of

the

model

495

engine.

TIle

main

specification,

con-

struction,

adjustments

and

maintenances

of

this

version

are

the

same

as

those

of

model

495

diesel

engine.

Hence

only

its

construc-

tional

features

and

the

relevant

affairs

in

operation

and

mainte-

nance

which

differs

fronl

other

versions

will be

d'escribed

in

this

chapter.

Model

495T

diesel

engIne

IS

provided

with

a

model

K

1317

A

air

cleaner

of

two

-

stage

dry

type.

It

consists

mainly

of

upper

cas-

ing,

guide

vanes,

paper

filter

element

and

lower

casing,

etc,

as

shown

in

Fig.

36.

The

air

cleaner

IS

fitted

011

the

air

intake

manifolcl

which

In-

takes

air

from

one

of

its

ends.

Being

provided

with

a

dry

type

cyclone,

this

air

cleaner

is

good

in

performace

of

rough

filtering-

It

is

especially

suitable

to

be

used

in

the

dusty

and

dry

working

ambient.

While

the

engine

is

iri

operation,

the

air

entering

into

the

up-

per

casing

through

its

inlet

port

along

the

tangential

direction

froms

a

swirl

movement,

which

grows

very

strong

and

flows

down-

wards

after

passing

through

the

guide

vanes.

The

dust

particles

contained

in

the

air

are

separated

out

under

the

action

of

the

cen-

trifugal

force

and

fall

into

the

bottom

of

the

lower

casing

..

A..t

this

time,

the

air

stream

changes

its

moving

direction,

arld

enters

into

the

inner

space

of

the

filter

element

from

its

outside

to

complete

its

further

filtration.

112

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