● 再就目前国内外正大力发展的乙醇汽油车而言。
国际上美国和巴西等国，与我国一样，均在大力发展乙醇汽油车。此车是将乙醇掺燃汽油。目前乙醇汽油中乙醇所掺比例，一般是10%。在此，将乙醇汽油车与董银谈的余热制氢发动机装配成的EH氢汽车技术对比如下——
1、燃料成本：乙醇汽油车所掺烧的乙醇是无水乙醇，它是用市面上95o含水乙醇，提纯为含量99.8o的无水乙醇才能掺烧汽油。无水乙醇价格不菲，比汽油要高出许多；而醇氢汽车所使用的仅是含量65o的含水乙醇，其价格比汽油低，约为无水乙醇的一半。
2、代用量： 前者代用汽油量为10%（巴西可达到20～25%）；后者的代用量——汽车一起步就达35%，而且其代用量可在0～85%间任意调配。
3、动力：前者汽车动力下降；后者动力提高15%
4、尾汽污染：前者减少30～50%；后者减少90%以上。
仅从以上四点比较，孰优孰劣，不言而喩。
另外，由于甲醇的成本比乙醇低得多，如果董银谈的醇氢汽车，以甲醇裂解制氢行驶，其燃料成本比汽油车会更低。这里，需要说明的，甲醇对汽车发动机缸体等部件具有较强的腐蚀性，国内外一直未能很好解决此技术问题。但董银谈的醇氢汽车，由于是用醇裂解制氢，醇不直接进入气缸，不存在甲醇对汽车缸体等主要部件的腐蚀。
根据以上分析比较，用余热制氢发动机组合而成的醇氢汽车，在实用性上，在市场产业化条件上，在发展前景上，远优于其它氢能源汽车和以醇直接掺燃烧的乙醇汽油车（或甲醇汽油车）。
从国际节能环保汽车发展的最新动向看，国际热点是混合动力汽车；而余热制氢发动机专利技术，一旦与之对接即可发展成为能源效率最高、污染排放最低、造价成本低廉、利用可再生能源醇为原料的氢混合动力汽车。
华译网上海翻译公司曾经翻译过大量有关国内外正大力发展的乙醇汽油车资料文件，Beijing Chinese Subtitling Translation Service Agency has translated many technical documents about Ethanol gasoline vehicles is developing vigorously at home and abroad.
● The ethanol gasoline motors actively developed home and abroad
The United States, Brazil, and some other countries, like China, are vigorously developing ethanol petrol vehicles that burn ethanol-mixed petrol. Currently ethanol generally takes 10% of the mixture. Here is a technical comparison made between the ethanol petrol vehicles and the EH hydrogen vehicles equipped with the ethanol hydrogen engines invented by Dong Yintan ——
1. Cost of fuel: it is purified ethanol that is used for ethanol gasoline vehicles. The ethanol has to be purified to 99.8 o from 95o available in the market before being mixed with gasoline for combustion. Purified ethanol is expensive with a price much higher than gasoline; while the ethanol hydrogen vehicles use only 65o ethanol at a price about half of purified ethanol and lower than gasoline.
2. Amount of ethanol: the amount of ethanol in the former version of petrol vehicles is 10% (in Brazil, it could reach 20 to 25 per cent); while in the latter, it is up to 35% since start-up, and randomly adjustable between 0 ~ 85%.
3. Power: Power of the former automobile decreases while the latter increases by 15%.
4. Discharge pollution: discharge of the former is reduced by 30 to 50 % while the latter is reduced by more than 90%.
Seen from the above four points, it is easy to tell which one is better.
In addition, since the cost of methanol is much lower than ethanol, if the ethanol hydrogen vehicles with the idea of Dong Yintan can be driven by hydrogen produced through methanol cracking, the cost of fuel will be much lower than petrol vehicles. Here, it needs to be clarified that methanol is strongly corrosive to car components such as engine cylinder. There is no good solution to this issue yet home and abroad. But for the ethanol-hydrogen vehicles of Dong Yintan, hydrogen is produced through ethanol cracking while ethanol doesn’t enter the cylinder directly. Therefore, no corrosion of cylinder is involved.
The above analysis shows that the ethanol-hydrogen vehicles equipped with ethanol-hydrogen engines are far better than the other kinds of hydrogen vehicles and ethanol gasoline vehicles (or methanol gasoline vehicles) in practice, industrialization and development prospects.
The latest development trends of international energy conservation and environment friendly vehicles show that the international hotspot is the hybrid vehicle; once the patented technology of ethanol hydrogen engines is connected with it, a new kind of hydrogen hybrid vehicles with renewable ethanol as raw material will be developed with the highest energy efficiency and the least discharge pollution at a low production cost.
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