97 与93 汽油的区别

97 与93 汽油的区别 97#与93#汽油的区别 汽车使用的燃料，大多是汽油和轻柴油。 汽油发动机燃用汽油，柴油发动机燃用轻柴 油。它们都是从石油中提炼出来的产品。但 大家现在对燃油的问，很多人的理解进入 了误区，认为对于发动机来说高标号的汽油肯定比低标号的好，其实并不是这样，什么样的发动机有不同的压缩比，可以选择相适用的标号汽油。 日益上升的油价让消费者不得不重视油耗问题。就汽油来说，97#于93#相比是否会更省油,两种燃油不小心混用有什么后果,相信大家都很想知道。 fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui 一、 要理解93#和97#的区别，有必要先了解一些基本概念: 1、压缩比: 汽车选择汽油标号的首要就是发动机的压缩比，也是当代汽车的核心节能指标。引擎的运行是由汽缸的“吸气--压缩--燃烧--排气--吸气”这样周而复始的运动所组成，活塞在行程的最远点和最近点时的汽缸体积之比就是压缩比。降低油耗的成本最低效果最好的方法就是提高发动机的压缩比。提高压缩比只是改变活塞行程，混合油气压缩得越厉害，它燃烧的反作用也越大，燃烧越充分。但压缩比不是轻易能动的，因为得有另一个指标配合，即汽油的抗爆性指标，亦称辛烷值，即汽油标号。 2、爆震与抗爆性: fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui 一般认为，活塞在行程的上止点后10度左右，燃烧产生最大压力时，推动活塞的力度最大(就象是荡秋千，在到达最高点后一点使劲秋千最快)。比如1000转的时候，燃烧过程相当于曲轴转角的20度，就是说提前10度点火，引擎最有力。而到了4000转，活塞运动得快了，燃烧过程就相当于曲轴转角的60度了，就需要提前50度点火，就这样随转速的提高，点火是越来越提前。最终会达到一个转速，还没点火油气就烧起来了，这就是爆震。 汽油的标号决定了爆震点的早晚，其实也就是决定了引擎的功率大小。燃油的抗爆震性能随它的组成而异。燃油的抗爆震性越高，发动机的压缩比也可能高些，发动机的经济性和动力性都会得到提高。 确定燃油的抗爆震性是很困难的，因为燃油的抗爆震性不仅取决于燃油的性质，还随发动机的型式、空燃比、冷却水温、进气温度、点火 fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui 提前角、气门定时等而变化。 3、辛烷值--标号: 为评定燃油的抗爆震性能，一般采用两种方法:马达法和研究法。评定工作一般在一台专门的可变压缩比的单缸发动机上进行。 马达法规定试验工况为:进气温度149?，冷却水温度100?，发动机转速900 r/min,点火提前角为上止点前14?~26?。试验时，先用被测定燃油工作，逐渐改变压缩比，直到爆震仪上指出标准爆震强度为止。然后，保持压缩比等条件不变，换用标准燃油工作。标准燃油是由抗爆性很高的异辛烷C8H18(定其辛烷值为100)和易爆燃的正庚烷(定其辛烷值为0)的混合液。逐渐改变异辛烷和正庚烷的比例，直到标准燃油所产生的爆燃强度与上述被测燃油相同时为止。这时标准燃油中所含异辛烷的体积百分数就是被测燃油的辛烷值。辛烷值高，燃油的抗爆 fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui 震性就好，反之抗暴性就差。 例如:某燃油辛烷值为80，这就是说该燃油与含异辛烷80%和正庚烷20%的混合液的抗爆性相同。这就是对燃油抗爆性的评价标准。 研究法与马达法的试验方法相同，只是规定的试验条件不同而已。研究法规定的工况为:进气温度为51.7?，冷却水温度为100?，发动机转速600 r/min，点火提前角为13?。 由于马达法规定的条件比研究法苛刻，因此所测出的辛烷值比较低。同一种燃油用马达法测出的辛烷值为85时，相当于研究法辛烷值为92;马达法为90时，研究法为97。现在加油站用的是研究法辛烷值。 一般来说，工厂提高汽油辛烷值的途径有三个:一是选择良好的原料和改进加工工艺，例如采用催化裂化、重整等二次加工工艺。二是向 fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui 产品中调入抗爆性优良的高辛烷值成分，例如异辛烷、异丙苯、烷基苯 等。三是加入抗爆剂。 fast boat. "Moon Pro Power pole and offshore to quickly open bow. See trailing people around the Lake called "shake up, us a lift boat!......" Shen Yuezhen stood in the bow, holding a small pistol, briskly humming "Bella Ciao". Person she wanted to send guns to the Jiangsu Taihu anti-Japanese volunteer station, look for a long time never met comrade ... ... (13) Qian Guibao intensive care wounded soldiers during the war, Zhu Xi Yao bang Tao Yuan San Min, based in this village, where good mass base. In May 1939, Zhu Xi transfer 9 wounded guerrilla, Yao bang due to injury. Qian Guibao, consciously take on the task of caring for the wounded villagers, they are wounded daily diet, taken care of. A few days later, 3 injured from wounds, medical treatment failed, died. Qian Guibao, arranged to buy the coffin, washing the bodies, buried on the spot. After 10 days, the remaining number of wounded was ordered to transfer to other places. Qian Guibao, villagers ' enthusiasm to take care of the wounded, reflect the people's support of anti-Japanese patriotism. (14) mountain Bao Dai Xiuchang, eager to help the underground resistance movement in May 1939, the party member Zhuang Shaozhen according to instructions, came to the Tomb area car dam the resistance movement. He organized the Wujiang administrative team, run evening classes, to introduce youth to turn, the army's case against Japan, revolutionary Outlook on life education; by teaching the Feng Yang, the nation, said song, the sword marches such as songs and organize cultural tours and other activities, mobilize the masses, unite against Japan. Scope of activities in the joy Temple works, Miao and Hui