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LPG, chemically simple and pure hydrocarbon, is a clean fuel with a very low sulfur content that is completely combustible.
This clean characteristic of LPG allows for an extremely low emission of regulated exhaust gases such as nitrogen oxide (NOx), carbon monoxide (CO), and hydrocarbon (HC). Moreover, it emits no particulate matters (PM10) that are the cause of various respiratory diseases and lung cancer, which is why LPG is recognized as the optimal solution to the improvement of air quality.
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Compared with gasoline and diesel-fueled vehicles, LPG vehicles also emit drastically lower amounts of unregulated toxic gases that cause direct and indirect damage over an extended period. LPG therefore causes less harm to the atmospheric environment, mitigating the effect on global warming, smog and acid rain.
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Gasoline |
LPG |
Diesel |
| Direct toxic damage |
CO |
100 |
50 |
35 |
| NO2 |
100 |
1000 |
| PM |
50 |
700 |
| HCHO,CH3CHO,Acrolein |
50 |
500 |
| Long-term toxic damage |
PAH(Polynuclear Aromatic Hydrocarbons) |
60 |
600 |
| BTX(Benzene, Toluene, Xylene) |
5 |
8 |
| HCHO,CH3CHO,Acrolein |
50 |
500 |
| Environmental effect |
Summer smog (ethylene) |
50 |
45 |
| Winter smog (SO2,PM10) |
50 |
700 |
| Acidification (Acid rain: NOx ,SO2) |
60 |
350 |
| Global warming (based on CO2) |
87 |
89 |
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