WE CAN EMISSION TEST ANY GAS VEHICLE FOR : 

                           $20.00    

  With this test we can see if your 02 sensors are working, your catalytic convertor is operating efficiently, and also check that you are getting the best possible gas mileage. You may need to make some minor adjustments or repairs to see improvements but we will certainly advise you of steps you can do.           

POLLUTANT INFORMATION

• Black Smoke

• White Smoke

• Carbon Monoxide

• Standards

• Improving Efficiency

Black Smoke:

Black smoke is a small particle of carbon deposit which exhausts from vehicles particularly those that use diesel engines such as buses, pick-up trucks and other large vehicles. Black smoke could also result from other sources such as industrial plants.

Causes of Black Smoke

1. Inefficient fuel injection engines

2. Dirty air filters

3. Vehicles carrying extra weight

4. Poorly maintained vehicles

5. High speed drivers

The Dangers of Black Smoke :

To human's health: black smoke can cause lung cancer and respiratory diseases. To the engines: black smoke can have an effect on fuel efficiency. It increases fuel consumption, decreases the engine efficiency and shortens the life of the engine.

Fleet Maintenance

1. Change engine oil periodically.

2. Tune up the vehicle's engine as often as specified in the owner's manual, changing sparkplugs and air filters as needed.

3. Check the engine's compression regularly. Changing the piston ring and cylinders help improve fuel efficiency.

4. Adjust the injection valves as specified to provide smoother idle.

5. Set the engine's fuel injection at different rpm (rounds per minute) to increase fuel efficiency and reduce emissions.

6. Remove unnecessary weight from the vehicle and practice steady, moderate acceleration and smooth braking.

White Smoke

Today, motorcycles are one of the most popular means of transportation throughout the country. In cities such as Bangkok where there is a lot of traffic, a vehicle that is convenient and serviceable is necessary. There are two types of motorcycles: two-cycles and four-cycles. Two-cycles are more popular compare to four-cycles motorcycles because they are more efficient, smaller, weight less and easier to repair.

White smoke is a group particles of partly burned lubricating oil. When these particles are emitted into the atmosphere which has a lower temperature, they form into a cloud of white smoke.

Causes of White Smoke

Essentially motorcycles use lubrication oil to lubricate several of their parts such as the axis, cylinders and pistons. When the vehicle is in use, a mixture of lubrication oil and gasoline are drawn into the engine room. When heat is generated, this mixture of lubrication oil and gasoline will be drawn into the combustion room. Mineral oil such as bright stock which is the main component of lubrication oil will not be burned along with gasoline. A group particles of the partly burned lubrication oil will remain in the combustion room while some will be blown out of the exhaust pipe. When these particles are emitted into the atmosphere which has a lower temperature, they form into a cloud of white smoke. Generally, high quality lubrication oil should not generate carbon deposits that block the exhaust pipe and thus do not emit white smoke. However, ordinary lubrication oil usually consist of mineral oil which although give good performance, repeatedly clog the exhaust pipe and produce an array of white smoke. Today, service and manufacturing firms are required to use standardized low smoke lubrication oil which generate less than 90 percent of white smoke.

The Dangers of White Smoke

To human's health: in addition to eyes irritation and failure of the respiratory system, white smoke is one of the causes of the brake down of the nervous system and cancer.

To the environment: a cloud white smoke can cause visual pollution.

To the engines: white smoke can block the exhaust pipes which increases the engine's fuel consumption, decreases its efficiency and raises the repair bills.

Ways to Reduce White Smoke
Improve the quality of lubrication oil as well as the engine's parts. Decrease or substitute the primary elements of mineral oil with polyisobutene which can give the same performance and do not generate as much white smoke.
Fleet Maintenance

1. Do not modify the lubricant valves apart from what had been specified in the owner's manual.

2. Use low smoke oil which meets the ISO standard.

3. Do not put lubrication oil in the fuel tank.

4. Tune up the vehicle's engine as often as specified in the owner's manual

Physical/Chemical Information

SULPHUR DIOXIDE

In continental regions, atmospheric sulphur dioxide results mainly from fossil fuel combustion. The oxidation of sulphur dioxide leads to the production of sulphuric acid, which contributes to acid precipitation. Its atmospheric lifetime with respect to oxidation is typically a few days. However, the rate of oxidation is variable, since it may occur both in aqueous droplets (eg. clouds), and in the gaseous phase where the sulphuric acid itself may condense to form condensation nuclei. Since sulphuric acid is very hygroscopic, these nuclei can grow rapidly by adsorption of water, and are therefore classed as cloud condensation nuclei.

NITROGEN OXIDES (nitric oxide and nitrogen dioxide)

Nitrogen oxides are released into the atmosphere mainly in the form of nitric oxide, as a result of fossil fuel combustion. Nitric oxide is readily oxidised to nitrogen dioxide by reaction with ozone. Elevated levels of nitrogen oxides are generally observed in urban environments under stable meteorological conditions, when the airmass is unable to disperse. Together with hydrocarbons, they play an important role in the formation of ozone in the atmosphere, as described below. Nitrogen oxides have a lifetime of approximately 1 day with respect to conversion to nitric acid, which is removed from the atmosphere by direct deposition to the ground, or tranfer to aqueous droplets (eg. cloud or rainwater), thereby contributing to acid deposition.

CARBON MONOXIDE

Carbon monoxide is both emitted into the atmosphere as a result of combustion processes, and is formed from the oxidation of hydrocarbons and other organic compounds. The highest concentrations are found close to combustion sources. It has an atmospheric lifetime of approximately one month with respect to further oxidation to form carbon dioxide.

OZONE

The formation of ozone requires the presence of three ingredients: hydrocarbons, nitrogen oxides and sunlight. The sunlight provides the energy for the whole process to begin through near ultra-violet radiation which is able to dissociate certain stable molecules, leading to the formation of reactive species known as free radicals. In the presence of nitrogen oxides, these free radicals catalyse the oxidation of hydrocarbons to carbon dioxide and water vapour. Partially oxidised organic species such as aldehydes, ketones and carbon monoxide are intermediate oxidation products, and ozone is generated as a by-product. Since ozone itself is photodissociated to form free radicals, it promotes the oxidation chemistry, thereby catalysing its own formation (ie. it is an autocatalyst). Consequently, high levels of ozone are generally observed under sunny, summertime conditions in locations where the airmass has previously collected emissions of hydrocarbons and nitrogen oxides. Because of the time required for chemical processing, ozone formation tends to be downwind of pollution centres (ie. it is usual for the highest ozone levels to be in suburban or rural locations).

PM10

PM10 is defined as the total mass (per unit volume of air) of particles of median aerodynamic diameter less than 10 micro metre, sometimes referred to as "fine" particulate matter. Larger particles are not readily inhaled , and are removed comparatively efficiently from the air by sedimentation. Sources of fine particulate matter are numerous, and their chemical compositions highly variable. The particles are often classed as either primary (those emitted directly into the atmosphere) or secondary (those formed or modified in the atmosphere from condensation and growth). A major source of fine primary particles results from combustion processes, in particular diesel combustion, where the transport of hot exhaust vapour into a cooler tailpipe or stack can lead to spontaneous nucleation of "carbon" particles prior to emission. Secondary particles are typically formed when low volatility products are generated in the atmosphere, for example the oxidation of sulphur dioxide to sulphuric acid referred to above. The atmospheric lifetime of particulate matter is a strong function of particle size, but may be as long as 10 days for particles of about 1micro metre in diameter.