REXROTH力士樂比例閥的工作原理如下在不制動時,活塞在感載彈簧通過杠桿施加的推力F的作用下,處 于左端極限位置,這時閥門離開閥座打開,使輸入輸出油路相通。當開始制動時,來自助力器的壓力為P1的制動液由進油口進入,并通過閥門從出油口輸至后制動管路.此時輸出液壓P,等于輸入液壓P1當制動踏板力增大時,P1和P2同步增大。但由于活塞左側(cè)承壓面積大于右側(cè),致使活塞左側(cè)受到的力也大于右側(cè).
Rexroth力士樂比例閥的結(jié)構(gòu)和其它參數(shù)一定的情況下,調(diào)節(jié)作用的初始控制壓力P·的值取決于感載的比例閥感載彈簧預(yù)緊力的大小,其變化范圍在1.35～2.7MPa之I閏.因此只要使彈簧預(yù)緊力隨汽車實際軸荷的變化而變化,就能實現(xiàn)感載調(diào)節(jié)。感載比例閥安裝在左后輪附近,其安裝方式使得軸荷增加時,感載彈簧被拉伸,折點液壓PS增大;軸荷減小時.PS減小.這樣就使Ps隨載荷變化,實現(xiàn)了感載調(diào)節(jié),使前后輪制動力分配更接近理想分配特性曲線。
德國力士樂Rexroth比例伺服閥4WRPEH10C3B100L-2X/G24K0/F1M
0811104103 DBT-XP2-1X/315
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0811404933 4WRBKE16W1-180SJ-1X/6ZG24EK31/A1D3M
0811404963 4WRBKE27W1-430SJ-1X/6ZG24EK31/A1D3M
0811405063 VT-VRRA1-527-20/V0/2STV
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0811405076 VT-VRPA1-527-20/V0/2/2V
0811405080 VT-VSPA2-525-10/V0/RTP
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0811405157 VT-VACAP-500-20/V0
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1834486001 VT3002-1-2X/32F
0811404801 4WRPEH10C3B100L-2X/G24K0/A1M
0811404613 4WRPEH6C4B40L-2X/G24K0/A1M
R910939192 AA10VSO140DFR/31R-PPB12N00
0510525311 AZPF-11-011LCB20MB
R900019521 VT11024-1X/
R900019567 VT11021-1X/
R900019568 VT11023-1X/
R900020153 VT3002-1-2X/32D
R900020154 VT3002-1-2X/48F
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