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目前,已经确定汽油机供油系统有如下两条发展途径:改进汽化器系统和采用电控喷油系统。对比这两种系统时,必须指出,现时价格不是起决定性作用的因素。如今一方面,电子技术日臻完善,另一方面石油产品价格上涨,因而保证发动机油耗最低、排放毒性最小和运转性能良好已成为选择未来供油系统的主要标准。因此,燃油-空气-废气的比例与每缸每一连续循环中的最佳比值精确地一致,应该是未来供油系统的主要特征。在发动机特性与理想特性总有差别的现实条件下,正是符合这一给定比值所达到的精度,实际上完全决定着汽油机供油系统的前途。在注意上述标准条件下进行对比时,最
At present, gasoline engine oil supply system has been identified as the following two ways of development: to improve the carburetor system and the use of electronic fuel injection system. When comparing these two systems, it must be pointed out that the current price is not a decisive factor. Nowadays, on the one hand, the electronic technology is improving day by day. On the other hand, the prices of petroleum products have risen. Therefore, it has become the major standard to choose the future oil supply system with the lowest fuel consumption, the least discharge toxicity and the good running performance. Therefore, the exact ratio of fuel-air-to-exhaust gas to the optimum ratio in each successive cycle of each cylinder should be a key feature of future fueling systems. Under the realistic conditions that there are always differences between the engine characteristics and the ideal characteristics, exactly the accuracy achieved by meeting this given ratio actually decides the future of the gasoline supply system. In the attention of the standard conditions for comparison, the most