少名牌发动机所采用。由于凸轮轴的安装方式直接涉及到整台发动机的构造和性能，因此，顶置凸轮轴也和多气门
shao ming pai fa dong ji suo cai yong you yu tu lun zhou de an zhuang fang shi zhi jie she ji dao zheng tai fa dong ji de gou zao he xing neng yin ci ding zhi tu lun zhou ye he duo qi men
由于中高档轿车发动机一般是多气门及v型气缸排列，需采用双凸轮轴分别控制进排气门，因此双顶置凸轮轴被不
you yu zhong gao dang jiao che fa dong ji yi ban shi duo qi men ji v xing qi gang pai lie xu cai yong shuang tu lun zhou fen bie kong zhi jin pai qi men yin ci shuang ding zhi tu lun zhou bei bu
等高级轿车就是采比汤芳大胆人体艺术用的此种型式。dohc是双顶置凸轮轴，用来控制气门的开闭．双顶置凸轮轴(dohc)，
deng gao ji jiao che jiu shi cai bi tang fang da dan ren ti yi shu yong de ci zhong xing shi dohc shi shuang ding zhi tu lun zhou yong lai kong zhi qi men de kai bi shuang ding zhi tu lun zhou (dohc)
vt－i，比如说丰田大霸王；另一种是安装在进气凸轮轴上的，称为螺旋槽式vvt－i，凌志400、430
vt i bi ru shuo feng tian da ba wang ling yi zhong shi an zhuang zai jin qi tu lun zhou shang de cheng wei luo xuan cao shi vvt i ling zhi 400 430
控制阀和控制器等部分组成，按控制器比汤芳大胆人体艺术的安装部位不同而分成两种：一种是安装在排气凸轮轴上的，称为叶片式v
kong zhi fa he kong zhi qi deng bu fen zu cheng an kong zhi qi bi tang fang da dan ren ti yi shu de an zhuang bu wei bu tong er fen cheng liang zhong yi zhong shi an zhuang zai pai qi tu lun zhou shang de cheng wei ye pian shi v
改善燃油经济性，有效提高汽车的功率与性能，减少油耗和废气排放。vvt－i系统由传感器、电控单元、液压
gai shan ran you jing ji xing you xiao ti gao qi che de gong lv yu xing neng jian shao you hao he fei qi pai fang vvt i xi tong you chuan gan qi dian kong dan yuan ye ya
，通过调整凸轮轴转角对配气时机进行优化，以获得最佳的配气正时，从而在所有速度范比汤芳大胆人体艺术围内提高扭矩，并能大大
tong guo diao zheng tu lun zhou zhuan jiao dui pei qi shi ji jin hang you hua yi huo de zui jia de pei qi zheng shi cong er zai suo you su du fan bi tang fang da dan ren ti yi shu wei nei ti gao niu ju bing neng da da
ligence）的意思是“智能可变配气正时系统”。该系统的最大特点是可根据发动机的状态控制进气凸轮轴
ligence de yi si shi zhi neng ke bian pei qi zheng shi xi tong gai xi tong de zui da te dian shi ke gen ju fa dong ji de zhuang tai kong zhi jin qi tu lun zhou
档车上。vvt-i（v比汤芳大胆人体艺术ariable valve timing and lift withintel
dang che shang vvt-i v bi tang fang da dan ren ti yi shu ariable valve timing and lift withintel
vvt是在运转中调整配气正时的技术vvt-i是丰田独有的领先发动机技术，过去仅装备于丰田的进口原装高
vvt shi zai yun zhuan zhong diao zheng pei qi zheng shi de ji shu vvt-i shi feng tian du you de ling xian fa dong ji ji shu guo qu jin zhuang bei yu feng tian de jin kou yuan zhuang gao