CARA MENGGUNAKAN DAN MEMBACA GAS ANALYZER / ALAT UJI EMISI

Introduction

This tutorial provides a comprehensive guide on how to use and interpret the readings from a gas analyzer, specifically for measuring vehicle emissions. Understanding these readings is crucial for assessing engine efficiency and compliance with environmental standards.

Step 1: Understanding Gas Analyzer Measurements

Familiarize yourself with the key measurements provided by the gas analyzer:

• CO (Carbon Monoxide): Indicates combustion efficiency.
• CO² (Carbon Dioxide): Shows combustion results.
• HC (Hydrocarbons): Reflects unburned fuel in exhaust.
• O² (Oxygen): Indicates combustion completeness.
• Lambda: Represents the air-fuel ratio.

Step 2: Measuring CO Levels

1. Check the CO Reading:
   • Ideal for fuel injection engines is between 0.2% to 1.5% (ideal at 0.5%).
   • For carbureted engines, the ideal is 1% to 3.5% (ideal at 1-2%).
2. Interpret Results:
   • If CO levels exceed ideal values, inspect:
     • Clogged carburetor/injectors
     • Dirty air filter
     • Choke operation
     • Compression leaks

Step 3: Measuring CO² Levels

1. Check the CO² Reading:
   • Ideal CO² level should be above 12%.
2. Interpret Results:
   • Higher CO² indicates better combustion efficiency.
   • If below 12%, consider checking:
     • Air-fuel mixture
     • Combustion chamber cleanliness

Step 4: Measuring HC Levels

1. Check the HC Reading:
   • Ideal HC level should not exceed 300 ppm.
2. Interpret Results:
   • High HC levels can lead to reduced engine power and increased fuel consumption.
   • Solutions may include:
     • Checking compression in the combustion chamber
     • Inspecting ignition system

Step 5: Measuring O² Levels

1. Check the O² Reading:
   • Ideal O² level should be below 2%.
2. Interpret Results:
   • Excess O² indicates inefficient combustion.
   • If above 2%, check for:
     • Exhaust leaks
     • Incorrect fuel mixture settings

Step 6: Evaluating Lambda Values

1. Check Lambda Reading:
   • Ideal Lambda value is 1.
2. Interpret Results:
   • Values greater than 1 indicate a lean mixture.
   • Values below 0.95 suggest a rich mixture.
   • Analyze results:
     • Above 1.1: Fuel is too lean.
     • Below 0.85: Fuel is too rich.

Conclusion

Understanding and interpreting the readings from a gas analyzer is essential for optimizing engine performance and ensuring compliance with emission standards. Regular checks can help identify issues such as inefficient combustion or improper fuel mixtures. By monitoring these values, you can maintain engine efficiency and reduce harmful emissions. Consider conducting these tests periodically to keep your vehicle in optimal condition.