The air pollution problem caused by transportation
vehicles, heavy or light machineries have been addressed in our
research. The excess emission of waste gases has resulted in the
"greenhouse effect", which will aftfect the environment.
According to information collected by the Earth
Committee of the World, developed countries had discharged more
than 16 billion tons of carbon monoxide by 1972. However, the amount
had increased to 23 billion tons by 1994. If the situation continues
to develop at this rate, 46 billion tons of carbon monoxide will
be produced by 2070.
At present, 23 billion ton of carbon monoxide have
been emitted by developed countries formed "greenhouse gases"
in the atmosphere, resulting in a temperature rise of one degree.
Ice mountains in the South Pole have started to melt at an alarming
rate. It is difficult to imagine the harm being caused by the rise
of the sea level.
Adverse effects are caused when we add ening oils
that do not meet the needs of the consumers and environmental protection.
Even though many types of engine oils and additives have been invented
to prolong engine life and reduce harmful emissions, the benefits
are very limited. Generally speaking, prolonging life of engine
oil does not contribute to the reduction of pollution. We are still
far from obtaining a satisfactory solution.