⚙Differential

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⚙Differential When a car is going straight, the left and right wheels rotate at the same speed. Rotation rate is usually expressed in rpm (revolutions per minute). rpm tells you how many revolutions per minute. At 500rpm, it is considered to be 500 revolutions per minute. Larger generators run at 1500rpm to produce a frequency of 50Hz. Excavator side panels work at 1800rpm. The left and right wheels rotate at the same speed as the car is moving When turning, the left and right wheels do not rotate at the same speed. When turning left, the left wheel spins slowly and the right wheel spins fast. When you turn right, the right wheel slows down and the left wheel spins fast. If both left and right wheels rotate at the same rpm, there is no way to turn. Due to this, it is not possible to connect the left and right wheels with the same shaft. Let me give you an example of a rear-wheel-drive car. In the rear seat, the front wheel is not connected to the engine. The power of the engine is...
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Check Engine Light

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Check Engine Light
Engine lights are part of the car's Onboard Diagnostic (OBD) system. The car's computer system constantly monitors and controls the car's performance, such as speed (rpm), air / fuel ratio, ignition timing, and autotransmission shifting. If there is a problem with the monitoring system, it is remembered as a Trouble code and displayed with a signal light. Once the signal light is detected, the problem can be identified by the OBD fault detection system. OBD systems have been installed in California since 1966 to control car exhaust emissions. Later, more complex and detailed OBD II systems emerged in accordance with automotive regulations and emission standards.


The engine light is directly related to the vehicle emission system. The troubleshooting code (Diagnostic code) is defined by the Society of Automotive Engineers (SAE) in accordance with US emission standards. There are four basic types of code. Power train (P), Body (B), Chassis (C) and Communication (U). Crabs starting with these four letters are 0 for Global and 1 for each car company. For example, the most common engine misfire code is P0300 and the EGR problem is P0401. If the ABS problem is C1201 (1 is Mitsubishi, etc.) I will continue to write Engine Check Check Light.


Car owners will definitely need to find the trouble code with the OBD II machine at the workshop when the check light comes on. Once you get the answer, you need to prioritize the part that needs to be fixed. There are two general types of engine lights. It flashes at the same time as the flickering light. Blinking is often a bigger problem than flashes. Being able to shine at the same time is not easy. Modern car computers have improved control systems, but the chassis lights have been lit to respond to problems, but the car's performance has not changed significantly. Sometimes the flames light up one day and disappear the next. You need to search for a solution. When traveling long distances, they are more likely to be concerned about a fire.
So I want to write about how to get started when the engine light comes on. If you see a flashing light while driving, park on the side of the road and look for clues.

The first other signal lights are the engine windshield light (shown when the engine windshield is dry) and the temperature indicator light (see the meter indicator). If both lights are on, the car must be stopped. Second, there is the problem of the engine light and the engine noise. Do not drive. Third, if the check light is on and the car is moving normally, you can continue. But it needs to be fixed soon. There are five basic reasons why an engine light comes on.
1. Oxygen sensor is bad.
2. Exhaust system malfunction.
3. Spark plug and plug wire is bad.
4. Poor airline censorship such as MAF / MAP.
5. The fuel tank cap is cracked / cracked.
All five focus on emission control. If the engine light comes on, check that there is something to check. The only reason the check light is on is that the OBD II test is the correct answer. :
Credit  Lin Htet (EEM)

အင္ဂ်င္ခ်က္မီး (Check Engine Light)

အင္ဂ်င္ခ်က္မီး ဆိုတာဟာ ကားရဲ႕ Onboard Diagnostic (OBD) စနစ္မွ အစိတ္အပိုင္း တစ္ခုပါ။ ကားရဲ႕ computer စနစ္ဟာ speed (rpm), Air/Fuel Ratio, Ignition timing, Autotransmission shifting စသည္ျဖင့္ ကားစြမ္းေဆာင္ရည္ကို အစဥ္ တိုင္းတာျပီး ထိန္းေက်ာင္းေပးပါတယ္။ အဲ့ ေစာင့္ၾကည့္ ထိန္းေက်ာင္းတဲ့စနစ္မွာ ျပသနာ ျဖစ္တာနဲ႔ Trouble code အျဖစ္ memory မွတ္ထားကာ အခ်က္ျပမီး နဲ႔ ျပေပးပါတယ္။ အခ်က္ျပမီး ေတြ႔တာနဲ႔ OBD အျပစ္ရွာ စနစ္ျဖင့္ ျပသနာကို အတိအက်သိရမွာျဖစ္ပါတယ္။ OBD စနစ္ဟာ California ကေန car exhaust emission ကို ထိန္းခ်ဳပ္ရန္ 1966 မွ စတင္ တပ္ဆင္ ခဲ့ပါတယ္။ ေနာက္ပိုင္းမွာေတာ့ ေမာ္ေတာ္ယာဥ္ ဆိုင္ရာ ျပဌာန္းခ်က္မ်ား Emission standard မ်ား အရ ပိုမိုရႈပ္ေထြးျပီး အေသးစိတ္တဲ့ OBD II စနစ္ ေပၚလာပါတယ္။

 

အင္ဂ်င္ခ်က္မီးဟာ Vehicle emission system နဲ႔ တိုက္ရိုက္ သက္ဆိုင္ပါတယ္။ Trouble code ေခၚ (Diagnostic code) ျပသနာ code ေတြကိုေတာ့ Society of Automotive Engineer (SAE) အဖြဲ႕က အေမရိကန္ emission standard နဲ႔ ညွိျပီး သတ္မွတ္ပါတယ္။ Code ေတြကို အေျခခံအားျဖင့္ ၄ မ်ိဳးခြဲထားပါတယ္။ Power train (P), Body (B), Chassis (C) နဲ႔ Communication (U) တို႔ု ျဖစ္ပါတယ္။ အဲ့ အကၡရာ ၄ ခုနဲ႔ စ ျပီး ကပ္လ်က္ ကဏန္း ေတြမွာ 0 ဆိုရင္ ေယ်ဘုရ (Global) ျဖစ္ျပီး 1 ဆိုရင္ ကား company အလိုက္ျဖစ္ ပါတယ္။ ဥပမာ အေတြ႕မ်ားတဲ့ Engine misfire code ဆိုရင္ P0300 ျဖစ္ျပီး EGR ျပသနာဆိုရင္ P0401 ပါ။ ABS ျပသနာဆို C1201 (1 ဟာ Mitsubishi, စသည္ျဖင့္ပါ) အင္ဂ်င္ ခ်က္မီး Check Engine Light ကို ဆက္ေရးပါ့မယ္။

 

ကားပိုင္ရွင္မ်ားအေနနဲ႔ ခ်က္မီးလင္းလာတဲ့အခါ ေသခ်ာတာကေတာ့ Work shop မွာ OBD II စက္နဲ႔ trouble code ရွာရပါမယ္။ အေျဖရ ေတာ့မွသာ ျပဳျပင္ရမယ့္အပိုင္းကို ဦးစားေပးအဆင့္နဲ႔ ျပင္သြား ရမွာပါ။ အင္ဂ်င္ခ်က္မီး လင္းရာမွာ ေယ်ဘုရ အားျဖင့္ ၂ မ်ိဳးရွိပါမယ္။ ခ်က္မီး မွိတ္တုတ္ မွိတ္တုတ္ လင္းတာ နဲ႔ တစ္သတ္မွတ္တည္း လင္းေနတာပါ။ မွိတ္တုတ္ မွိတ္တုတ္ ဟာ တစ္သတ္မွတ္ထဲ လင္းေနတာထက္ ျပႆနာ ပိုႀကီးေလ့ရွိပါတယ္။ တစ္သတ္မွတ္တည္း လင္းေနတာကိုလည္း ေပါ့လို႔ေတာ့မရပါဘူး။ ယေန႔ ေခတ္ေပၚကား ကြန္ပ်ဴတာေတြမွာက ထိန္းခ်ဳပ္မႈ စနစ္ေတြပိုမို ေကာင္းမြန္လာေတာ့ ျပႆနာ ေပၚေနတဲ့ စနစ္ေတြကိုလိုက္လံ ျဖည့္ဆည္း ေပးျခင္းျဖင့္ ခ်က္မီး လင္းလာေသာ္လည္း ကားရဲ႕စြမ္းေဆာင္ရည္ သိသိ သာသာမေျပာင္းလဲ သြားတာေတြရွိပါတယ္။ တစ္ခါ တစ္ေလလည္း ခ်က္မီးက တစ္ေန႔လင္းလာလိုက္ ေနာက္ေန႔ ေပ်ာက္သြားလိုက္လည္း ရွိပါတယ္။ စက္ထိုးျပီး အေျဖရွာဖို႔လိုပါတယ္။ ခရီးေဝးသြားေနရင္း ခ်က္မီးေပၚလာရင္ ပိုျပီး စိုးရိမ္တတ္ၾကပါတယ္။
ဒါဆို အင္ဂ်င္ခ်က္မီး ေပၚလာရင္ ဘယ္လို 'စ လုပ္မလဲ ဆိုတာေလး ေရးခ်င္ပါတယ္။ ကားေမာင္းေနရင္း ခ်က္မီးလင္းလာရင္ လမ္းေဘးဆင္း ကားရပ္ျပီး ေပၚေပၚထင္ထင္ ျဖစ္ေနတဲ့ အရာေတြအရင္ဆံုးရွာပါ။

 

ပထမဆံုး အျခား အခ်က္ျပမီးေတြျဖစ္တဲ့အင္ဂ်င္ဝိုင္မီး (အင္ဂ်င္ဝိုင္ခန္းေနရင္ျပမယ္) နဲ႔ အပူခ်ိန္ျပမီး (မီတာတံနဲ႔ ျပရင္ မီတာကိုၾကည့္) ။ အဲ့ မီး ၂ခုလံုး ျပရင္ေတာ့ ကားကို ရပ္နားမွ ရပါမယ္။ ဒုတိယကေတာ့ ခ်က္မီးလင္းျပီး အင္ဂ်င္သံ ဆူညံ လာတာမ်ိဳး ဆိုရင္လည္း ျပသနာရွိပါတယ္။ ဆက္မေမာင္းသင့္ပါ။ တတိယအေနနဲ႔ ခ်က္မီးလင္း လာတာပဲရွိျပီး ကားက ပံုမွန္ပဲ သြားေနတယ္ ဆိုရင္ေတာ့ ဆက္သြားလို႔ရပါတယ္။ ဒါေပမယ့္ မၾကာခင္ေတာ့ ျပင္ရပါမယ္။ အင္ဂ်င္ခ်က္မီး လင္းလာရျခင္းရဲ႕ အေၾကာင္းျပခ်က္ အေျခခံ ၅ ခုရွိပါတယ္။
၁။ Oxygen sensor မေကာင္းျခင္း။
၂။ Exhaust system မေကာင္းျခင္း။
၃။ Spark plug and plug wire မေကာင္းျခင္း။
၄။ MAF / MAP စတဲ့ ေလလိုင္း ဆင္ဆာ မေကာင္းျခင္း။
၅။ ဆီတိုင္ကီ အဖံုး ဟ ေနျခင္း/ ကြဲေနျခင္း တို႔ျဖစ္ပါတယ္။
အဆိုပါ ၅ ခ်က္လံုးဟာ emission control ကိုပဲ ဦးတည္ပါတယ္။ ဒါေလာက္ဆို အင္ဂ်င္ခ်က္မီး လင္းလာရင္ စစ္ေဆးစရာရွိတာစစ္ျပီး ေမာင္းလို႔ ရရင္ ဆက္ေမာင္းရမွာျဖစ္သလို ရပ္ထားရ ရင္လည္း ရပ္ထားကာ workshop နွင့္ဆက္သြယ္ ရပါမယ္။ ခ်က္မီးဘာေၾကာင့္လင္းရသလဲ ဆိုတာကေတာ့ OBD II စက္ထိုးျပီး စစ္ေဆးျခင္း သည္သာ အေျဖမွန္္ျဖစ္ပါေၾကာင္း။ ။

Credit  Lin Htet (EEM)

 

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