How do you measure exhaust emissions?
A probe is placed in the tailpipe of the car and the exhaust gases are measured following a strict procedure. The exhaust gas analyser is used for measuring 4 gases, oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2) and hydrocarbons (HC) as well as calculating lambda (λ) a measure of air/fuel ratio.
What is an exhaust emission tester?
Exhaust Emission analyzers, also known as gas analyzers, are devices that measure the amount of air pollutants that a certain engine or industry emit into the air.
What is a good HC reading?
HC. 0 – 35 ppm. Lambda. .995 – 1.005. readings that would indicate a properly functioning engine, but a converter that is not lighting off, due to contamination or physical damage.
What is a good CO2 tailpipe reading?
The higher the CO2 level, the more efficient the engine is running. Optimum CO2 is 12% to 15 %. CO2 can be used as an efficiency meter of the engines combustion efficiency. When there is a problem that affects the combustion process, the CO2 will drop below 12%.
What tool is used to test emissions?
System1® OBD II Fast, accurate and easy-to-use plug-in system to check the vehicle’s emission systems and components are working correctly.
What are the measures for vehicle emission control?
The emissions from vehicles are generally depends upon the air–fuel ratio. The control techniques for exhaust gas emissions are engine modifications, fuel pretreatment, fuel additives, exhaust gas recirculation (EGR), positive crankcase ventilation (PCV) and an application of catalytic converters.
How does an exhaust analyzer work?
The key components are an infrared source, a light tube, an interference (wavelength) filter, and an infrared detector. The gas is pumped or diffuses into the light tube, and the electronics measures the absorption of the characteristic wavelength of light. Sensors are most often used for measuring carbon monoxide.
What information can an exhaust gas analyser provide?
In their most simple form, exhaust gas analyzers effectively sample and measure the various gasses present and provide the operator with an end reading. When it comes to exhaust pipe systems, exhaust gas analyzers can locate carbon monoxide and identify sources that may lead to fire if fuel is inadvertently released.
What causes high HC emissions?
What causes high HC emissions? Excessive HC results from ignition misfire or misfire due to excessively lean or rich air/fuel mixtures.
What information can an exhaust gas Analyser provide?
Analysis of exhaust gas from combustion engines can help evaluate engine performance and diagnose problems. A Nova portable engine exhaust gas analyzer can measure Oxygen (O2), Carbon Monoxide (CO), Carbon Dioxide (CO2), Nitrogen Oxide (NO), Nitrogen Dioxide (NO2), and Hydrocarbons (HC’s).