天然气可直接用来开动汽车和其他类似的车辆，但要把发动机改装一下。
Natural gas can be used directly to power cars and other similar vehicles by converting the engine .
一辆尚处于实验阶段的清洁能源汽车依靠天然气行驶。另一辆使用从谷物蒸馏而来的酒精。第三辆则装有由氢燃料电池提供能量的零排放发动机。
One experimental clean-energy car runs on natural gas. Another USES ethanol distilled from corn. A third has a zero-emissions electric motor powered by a hydrogen fuel cell.
目前天然气发动机的研究与开发正成为我国汽车发动机行业的一个热点。
Nowadays the research and development of CNG engine is coming into a hotspot in engine industry of our country.
试验结果表明：三种催化器都能使天然气掺氢发动机排放达到环境友好型汽车标准。
The results show that all the three types of catalytic converters can make the HCNG engine meet enhanced environmentally friendly vehicle (EEV) emission standard.
目前，我国的CNG汽车动力装置，除比例很小的纯天然气发动机之外，基本上是可以分别燃用天然气和汽油的两用燃料发动机。
At present, except the small proportion of the pure natural gas engines, CNG vehicle powered device is basically flexible-fuel engine that can use natural gas or gasoline dividedly.
在保持天然气汽车良好排放性与燃料经济性的情况下，使天然气发动机的功率由原来不足汽油发动机功率的80 %提高到95 %以上。
On the basis of keeping the exhaust emission and economy performance, the engine power is improved from 80% to 95% of that one's running on the gasoline fuel.
在保持天然气汽车良好排放性与燃料经济性的情况下，使天然气发动机的功率由原来不足汽油发动机功率的80 %提高到95 %以上。
On the basis of keeping the exhaust emission and economy performance, the engine power is improved from 80% to 95% of that one's running on the gasoline fuel.
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