Bbns Flashcards

Lubrication

1
Q

Lubrication systems ဘယ္ႏွမ်ိဳး?

A

Multi lubrication system
Wet sump lubrication system
Dry sump lubrication system

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2
Q

Purposes of lubrication system ??

A

Oil reduce ware

Oil pick up heat

Fill clearance

Oil gas-tight seal

Oil cleaning

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3
Q

Cooling system ရဲ႕ purpose??

A

1 speedနဲ႔ operationအေျခအေနအားလံုးအတြက္ engine ကို လံုေလာက္တဲ့ အပူခ်ိန္မွာထားေပးရန္

  1. burning fuelကေနထုတ္လိုက္တဲ့အပူေတြကengine၇ဲ့ အစိတ္အပိုင္းေတြကို မဖ်တ္ဆီးခင္ ဖယ္ထုတ္ေပးရန္
  2. serval operation temperature ကို ယူေဆာင္လာေပးျခင္းျဖင့္ကူညီေပးရန္
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4
Q

Types of cooling systems?

A

Direct or air cooling system

Indirect or liquid cooling system

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5
Q

Water cooling system ကို ဘယ္္ႏွမ်ိဳးခြဲ??

A

Open type cooling system

Close type cooling system

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6
Q

Open cooling system ကို ဘယ္ႏွမ်ိဳးခြဲ??

A

Wast water system

Recirculated water aystem

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7
Q

Properties of antifreeze ??

A
1 ေရမွာလြယ္လြယ္ေပ်ာ္၀င္ရမယ္
2 ေစ်းေပါရမယိယ္
3 အေငြ႕မပ်ံရ
4 အနည္မထိုင္ရ
5 cooling system ကို သြားရန္မျပဳရ
6 system ကို သြားမဖ်တ္စီးရ
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8
Q

Air cooled system ရဲေကာင္းက်ိဳးဆိုးက်ိဳး??

A

Pump မရိွလို႔ေပါ့

ေရမရိွလို႔ ေရယို( leakcage)မရိွ

Coolantလို႔ေခၚတဲ့antifreeze မလို

ရာသီဥတု ေအးတဲ့အခ်ိန္မွာသံုးႏိုင္ရမယ္

ဆိုးက်ိဳး

Effi:နည္း
Engineကိုေလထဲထုတ္ထားရတာမို႔ ဆိုငိကယ္နဲ႔ေလယာဥ္ေတြမွာပဲသံုး….

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