主要特点: 动力强,低油耗,欧四排放技术。 采用先进技术含量的多点电控燃油喷射系统。其结构形式是:4气缸、直列、水冷、多点电喷燃油喷射。 与同类产品相比,具有体积小、质量轻、噪声小、排放低的优点,具有较高的动力性和较好的燃油经济性。 由于采用先进的加工工艺,实施科学的质量管理,因此,491系列发动机具有优良,稳定的产品质量,具有较强的市场竞争力。 The Features of the Engine: Strong power, low fuel consumption, EURO IV Multi-pointECISystem, 4 cylinders in-line, water-cooled High in power, good in fuel economy; Small in size, light in weight, little in noise, low in emission 491series of engine is very competitive due to its excellent and stable quality and performance. 4.1.10检查气门座的磨损情况及有无损伤。必要时应修整气门座,此时首先应检查气门导管的磨损情况,如已磨