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簡要描述：SMC直通型速度控制閥@SMC位置氣缸SMC直通(tong)(tong)型速(su)(su)度控制閥(fa)裝在(zai)(zai)節(jie)汽門旁通(tong)(tong)空氣孔上，由怠速(su)(su)控制器依據點火信號，在(zai)(zai)引(yin)(yin)擎轉速(su)(su)低于750RPM時，即使怠速(su)(su)控制閥(fa)動作，以提(ti)升引(yin)(yin)擎轉速(su)(su)，
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SMC直通型速度控制閥@SMC位置氣缸
SMC直通(tong)型速(su)度控(kong)制(zhi)閥裝在(zai)節汽門旁通(tong)空氣孔上，由怠速(su)控(kong)制(zhi)器(qi)依(yi)據(ju)點火(huo)信號，在(zai)引擎轉(zhuan)速(su)低于750RPM時，即使怠速(su)控(kong)制(zhi)閥動作(zuo)，以提升引擎轉(zhuan)速(su)，
在引(yin)(yin)擎轉速超過1050RPM后,則停(ting)止動(dong)作(zuo)(zuo)。在配備冷氣系統(tong)的(de)車種，又將此控(kong)制閥(fa)(fa)稱為怠(dai)速提速閥(fa)(fa)后因冷氣壓縮機動(dong)作(zuo)(zuo)后，產生(sheng)引(yin)(yin)擎負(fu)載，使引(yin)(yin)擎怠(dai)速降低，而怠(dai)速控(kong)制閥(fa)(fa)隨之動(dong)作(zuo)(zuo)，以維持(chi)怠(dai)速的(de)穩定(ding)性。
SMC直(zhi)通(tong)型速(su)度控制(zhi)閥(fa)主要部件有(you)*磁鐵、電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)和(he)(he)(he)旋(xuan)(xuan)轉(zhuan)(zhuan)滑(hua)(hua)閥(fa)等(deng)以及螺旋(xuan)(xuan)回位彈簧、電(dian)(dian)(dian)(dian)(dian)(dian)刷(shua)及引線(xian)(xian)等(deng)組(zu)成(cheng)(cheng)，滑(hua)(hua)閥(fa)固裝在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)軸(zhou)(zhou)上(shang)(shang)，與電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)軸(zhou)(zhou)一起(qi)轉(zhuan)(zhuan)動，用以控制(zhi)流過旁通(tong)氣道的(de)空氣量(liang)。*磁鐵固裝在(zai)外殼上(shang)(shang)，其(qi)間形成(cheng)(cheng)磁場。電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)位于*磁鐵的(de)磁場中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)鐵心上(shang)(shang)纏有(you)兩(liang)(liang)組(zu)繞向相(xiang)反的(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)(xian)圈(quan)(quan)W1和(he)(he)(he)W2。當線(xian)(xian)圈(quan)(quan)W1通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)帶動旋(xuan)(xuan)轉(zhuan)(zhuan)滑(hua)(hua)閥(fa)順時(shi)針偏轉(zhuan)(zhuan)，空氣旁通(tong)道關小；當線(xian)(xian)圈(quan)(quan)W2通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)帶動旋(xuan)(xuan)轉(zhuan)(zhuan)滑(hua)(hua)閥(fa)逆針偏轉(zhuan)(zhuan)，空氣旁通(tong)道截(jie)面開大。W1和(he)(he)(he)W2的(de)兩(liang)(liang)端與電(dian)(dian)(dian)(dian)(dian)(dian)刷(shua)集(ji)電(dian)(dian)(dian)(dian)(dian)(dian)環(huan)相(xiang)連(lian)，經(jing)電(dian)(dian)(dian)(dian)(dian)(dian)刷(shua)引出與ECU相(xiang)連(lian)接(jie)。如圖3－26所示，電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)軸(zhou)(zhou)上(shang)(shang)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)刷(shua)集(ji)電(dian)(dian)(dian)(dian)(dian)(dian)環(huan)，類似電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)換向器(qi)結構(gou)，它由三段滑(hua)(hua)片圍(wei)合而成(cheng)(cheng)，其(qi)上(shang)(shang)各有(you)一電(dian)(dian)(dian)(dian)(dian)(dian)刷(shua)與之接(jie)觸。電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)線(xian)(xian)圈(quan)(quan)W1和(he)(he)(he)W2的(de)兩(liang)(liang)端分別焊接(jie)在(zai)相(xiang)應(ying)的(de)滑(hua)(hua)片上(shang)(shang)。當點火開關旋(xuan)(xuan)至“ON"時(shi)，接(jie)線(xian)(xian)插頭“2"上(shang)(shang)即(ji)有(you)蓄電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓，電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(shu)線(xian)(xian)圈(quan)(quan)W1和(he)(he)(he)W2是否通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)，則由ECU中(zhong)控制(zhi)W1和(he)(he)(he)W2搭鐵的(de)三極(ji)管(guan)(guan)VT2和(he)(he)(he)VT1的(de)通(tong)斷狀態決定。由于占空比(bi)控制(zhi)信號和(he)(he)(he)三極(ji)管(guan)(guan)VT1的(de)基(ji)極(ji)之間接(jie)有(you)反相(xiang)器(qi)，故三極(ji)管(guan)(guan)VT1
和VT2集(ji)電極輸出的(de)相(xiang)(xiang)位(wei)相(xiang)(xiang)反。因此，旋轉(zhuan)滑(hua)閥式(shi)怠速控制閥上的(de)兩個電樞線(xian)圈總是(shi)交替地通(tong)過電流，又因兩組線(xian)圈繞向相(xiang)(xiang)反，致使電樞上交替產生方向相(xiang)(xiang)反的(de)電磁(ci)力矩。
SMC直通型速度控制閥@SMC位置氣缸
AS1000-M3 M3*0.5 21 0.3 21 0.3
AS1000-M5 M5*0.8 90 1.4 80 1.2
AS2000-01 1/8 340 5.2 250 3.8
AS2000-02 1/4 340 5.2 250 3.8
; AS3000-02 1/4 810 12.3 810 12.3
; AS3000-03 3/8 810 12.3 810 12.3
AS4000-02 1/4 1670 25.5 1670 25.5
AS4000-03 3/8 1670 25.5 1670 25.5
AS4000-04 1/2 1670 25.5 1670 25.5
AS5000-02 1/4 2840 44 2840 44 ;
AS5000-03 3/8 4270 66 4270 66
AS5000-04 1/2 4270 66 4270 66
AS1000-M3 M3*0.5 21 0.3 21 0.3
AS1000-M5 M5*0.8 90 1.4 80 1.2
AS2000-01 1/8 340 5.2 250 3.8
AS2000-02 1/4 340 5.2 250 3.8
AS3000-02 1/4 810 12.3 810 12.3
AS3000-03 3/8 810 12.3 810 12.3
AS4000-02 1/4 1670 25.5 1670 25.5
AS4000-03 3/8 1670 25.5 1670 25.5
AS4000-04 1/2 1670 25.5 1670 25.5
AS5000-02 1/4 2840 44 2840 44
; AS5000-03 3/8 4270 66 4270 66
AS5000-04 1/2 4270 66 4270 66
：胡
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