He kūpono no ka excavator PC200-6 hydraulic relief valve 702-75-01200

ʻO ka valve proportional electro-hydraulic ka solenoid proportional i loko o ka valve e like me ka hōʻailona voltage input e hana i kahi hana kūpono, no laila ka neʻe ʻana o ka valve spool displacement, hoʻololi ka nui o ka valve port a hoʻopau i ke kaomi a me ke kahe o ka puka e like me nā ʻāpana uila komo, Hiki ke hoʻoneʻe ʻia ka valve spool ma ke ʻano o ka mechanical, hydraulic a i ʻole ka manaʻo uila. No ka mea he ʻano ʻano like ʻole ka valve electro-hydraulic proportional, maʻalahi e hana i nā ʻano uila a me nā ʻōnaehana electro-hydraulic i hoʻokele ʻia e ka kamepiula, ka pololei o ka mana kiʻekiʻe, ka hoʻokomo ʻana a me ka hoʻohana ʻana, a me ka ikaika anti-pollution ikaika, ke hoʻonui ʻia nei ke kahua noi. I nā makahiki i hala iho nei, ua kūkulu ʻia ka valve proportional plug-in a me ka proportional multiway valve e noʻonoʻo pono i nā ʻano hoʻohana o nā mīkini hana. Loaʻa iā ia nā hana o ka hoʻokele pilote, ka ʻike ukana a me ka uku kaomi, a he mea nui kona helehelena i ka hoʻomaikaʻi ʻana i ka pae ʻenehana holoʻokoʻa o nā mīkini hydraulic mobile, ʻoi aku hoʻi i ka hana pailaka uila, ka mana mamao uea a me ka hana kaohi mamao uea.

I ka wā e hoʻohana ʻia ai ka mīkini hoʻoluhi kaomi electro-hydraulic valve manual pressure, e neʻe maʻamau ka mīkini hoʻoluhi kaomi lima me ka spool i nā manawa a pau, a aia ke kūpaʻa friction o ka sila, e pili ana i ka pololei o ka hana spool. I ka manawa like, paʻakikī ka hana ʻana i ka mīkini hoʻoluhi kaomi electro-hydraulic valve manual pressure.