全国30多个城市实施的空气质量监测结果表明，迅速增加的机动车成为重要污染源。记者近日从有关部门获悉一个令人欣喜的信息，一种新型环保汽车发动机──清洁燃料甲酸发动机试验成功，首批两台发动机已运送至山西省装车运行。据了解，该项目是由中科院工程热物理所和北京内燃 The results of air quality monitoring conducted in more than 30 cities across the country show that the rapidly increasing number of motor vehicles has become an important source of pollution. Recently, the reporter learned from the relevant departments an encouraging message that a new type of environmentally friendly car engine, the clean fuel formic acid engine, has been successfully tested and the first two engines have been delivered to Shanxi Province for loading. It is understood that the project is conducted by the Institute of Engineering Thermophysics of the Chinese Academy of Sciences and Beijing Internal Combustion