在阻风碟片内；由于四冲发动机的进气吸力较大，发动机高速状态下关闭油门将使进汽喉管内的真空度提高很多，
zai zu feng die pian nei you yu si chong fa dong ji de jin qi xi li jiao da fa dong ji gao su zhuang tai xia guan bi you men jiang shi jin qi hou guan nei de zhen kong du ti gao hen duo
路和调整： １、真空膜化油器的怠速出油孔在化油器里有三个，当手动阻风碟片关闭时，有个大点的怠速出油孔
lu he diao zheng zhen kong mo hua you qi de dai su chu you kong zai hua you qi li you san ge dang shou dong zu feng die pian guan bi shi you ge da dian de dai su chu you kong
空室的密封也很重要，有点漏气就会方寸大乱。 〔二〕、等压真空膜化油器内的怠速油
kong shi de mi feng ye hen zhong yao you dian lou qi jiu hui fang cun da luan er deng ya zhen kong mo hua you qi nei de dai su you
那只弹簧就很关键，建议一般车迷不要轻易去动它，免得压力改变影响到柱塞与主油针的匹配开度。橡胶膜片与真
na zhi dan huang jiu hen guan jian jian yi yi ban che mi bu yao qing yi qu dong ta mian de ya li gai bian ying xiang dao zhu sai yu zhu you zhen de pi pei kai du xiang jiao mo pian yu zhen
作用；有ｄｉｙ条件的话，最好是把它改成手控的。既然是由负压真空来控制柱塞与主油针的开度，橡胶膜片上的
zuo yong you tiao jian de hua zui hao shi ba ta gai cheng shou kong de ji ran shi you fu ya zhen kong lai kong zhi zhu sai yu zhu you zhen de kai du xiang jiao mo pian shang de
风门”。平常冷车时是开启状态，这使得发动机在启动时化油器内真空负压不会很高，对开启负压燃油开关有消极
feng men ping chang leng che shi shi kai qi zhuang tai zhe shi de fa dong ji zai qi dong shi hua you qi nei zhen kong fu ya bu hui hen gao dui kai qi fu ya ran you kai guan you xiao ji
有燃油在输出消耗的情况。 4、真空膜化油器启动辅助用的是“电热加浓”，就是人们常说的那种“电子
you ran you zai shu chu xiao hao de qing kuang 4 zhen kong mo hua you qi qi dong fu zhu yong de shi dian re jia nong jiu shi ren men chang shuo de na zhong dian zi
闭油门继续滑行时，气缸吸气泊头吧所造成的过高真空负压会使那个怠速油孔被过度吸油，形成车辆关闭油门滑行状态还
bi you men ji xu hua hang shi qi gang xi qi bo tou ba suo zao cheng de guo gao zhen kong fu ya hui shi na ge dai su you kong bei guo du xi you xing cheng che liang guan bi you men hua hang zhuang tai hai
油孔还在阻风片的后面；（还有两个低速出油孔在阻风片的前面。）由于怠速油孔在阻风片的后面，所以当车辆关
you kong hai zai zu feng pian de hou mian hai you liang ge di su chu you kong zai zu feng pian de qian mian you yu dai su you kong zai zu feng pian de hou mian suo yi dang che liang guan
空膜化油器的怠速油路系统与传统碟阀式泊头吧化油器雷同，当阻风片（油门）关到最小位置时，有个可调出油量的怠速
kong mo hua you qi de dai su you lu xi tong yu chuan tong die fa shi bo tou ba hua you qi lei tong dang zu feng pian you men guan dao zui xiao wei zhi shi you ge ke diao chu you liang de dai su
低开度，当发动机转速高时主油针柱塞会自动提升开度，直到喉管内负压与主油针柱塞开度平衡。 3、真
di kai du dang fa dong ji zhuan su gao shi zhu you zhen zhu sai hui zi dong ti sheng kai du zhi dao hou guan nei fu ya yu zhu you zhen zhu sai kai du ping heng 3 zhen
度是人工控制的油门开度，主油针柱塞的开度由化油器中段的真空负压来控制，当发动机转速低时主油针柱塞会降
du shi ren gong kong zhi de you men kai du zhu you zhen zhu sai de kai du you hua you qi zhong duan de zhen kong fu ya lai kong zhi dang fa dong ji zhuan su di shi zhu you zhen zhu sai hui jiang
柱塞后面，故进气量由阻风碟片的开度（油门开度泊头吧）和膜片柱塞的开度(自动控制)共同决定。其中阻风碟片的开
zhu sai hou mian gu jin qi liang you zu feng die pian de kai du you men kai du bo tou ba he mo pian zhu sai de kai du ( zi dong kong zhi ) gong tong jue ding qi zhong zu feng die pian de kai
贫油熄火的局面，但因此而带来了发动机提速略慢的缺点。 2、该油门（阻风碟片）位置在化油器主油针
pin you xi huo de ju mian dan yin ci er dai lai le fa dong ji ti su lue man de que dian 2 gai you men zu feng die pian wei zhi zai hua you qi zhu you zhen
。这类结构的泊头吧好处是主油针柱塞可以自动随负压大小变化开度，防止驾车人急开油门造成化油器失去负压使发动机
zhe lei jie gou de bo tou ba hao chu shi zhu you zhen zhu sai ke yi zi dong sui fu ya da xiao bian hua kai du fang zhi jia che ren ji kai you men zao cheng hua you qi shi qu fu ya shi fa dong ji
控制化油器里面的阻风碟片的开度，再由阻风碟片前的进气真空负压来吸动橡胶膜片提升带动含有主油针的柱塞体
kong zhi hua you qi li mian de zu feng die pian de kai du zai you zu feng die pian qian de jin qi zhen kong fu ya lai xi dong xiang jiao mo pian ti sheng dai dong han you zhu you zhen de zhu sai ti
与出油状态： 1、真空膜化油器的油门线不是泊头吧直接控制化油器里的柱塞与主油针，而是
yu chu you zhuang tai 1 zhen kong mo hua you qi de you men xian bu shi bo tou ba zhi jie kong zhi hua you qi li de zhu sai yu zhu you zhen er shi
不同的地方，故在此补充一些内容，以便版友自学调试这种化油器。。 [一]、真空膜化油器内部的负压
bu tong de di fang gu zai ci bu chong yi xie nei rong yi bian ban you zi xue diao shi zhe zhong hua you qi [ yi ] zhen kong mo hua you qi nei bu de fu ya
月二十八泊头吧号发出的专帖“对踏板车上国产负压膜片化油器的初步印象”。由于这种化油器有些与常规柱塞式化油器
yue er shi ba bo tou ba hao fa chu de zhuan tie dui ta ban che shang guo chan fu ya mo pian hua you qi de chu bu yin xiang you yu zhe zhong hua you qi you xie yu chang gui zhu sai shi hua you qi
最近有许多版友问及有关等压真空膜化油器怠速调节的内容，关于等压真空膜化油器的初步内容，可查阅本版在八
zui jin you hu duo ban you wen ji you guan deng ya zhen kong mo hua you qi dai su diao jie de nei rong guan yu deng ya zhen kong mo hua you qi de chu bu nei rong ke cha yue ben ban zai ba