据统计,目前全国排灌机械动力完好率约为70%左右,单位马力小时燃油的消耗量大部分都超过农用柴油机性能指标值。为了节约能源,各地正在开展技术革新活动,创造了不少柴油机简易节油措施,其中“消除正压,加大 According to statistics, at present, the complete power rate of the irrigation and drainage machinery in the country is about 70%, and most of the unit horsepower hour fuel consumption exceeds the value of the agricultural diesel engine performance index. In order to save energy, technological innovation activities are being carried out in various parts of the country and many simple fuel-saving measures for diesel engines have been created, including “eliminating positive pressure and increasing