K19 wahie kaomi mea ike 2897690 no Cummins diesel engine lako

1. Semiconductor varistor type intake pressure sensor.

(1) Ana kumu o ka semiconductor piezoresistive pressure sensor Hoʻohana ka semiconductor piezoresistive pressure sensor i ka hopena piezoresistive o ka semiconductor e hoʻololi i ke kaomi i loko o ka hōʻailona voltage pili, a ua hōʻikeʻia kona kumukānāwai ma ka Figure 8-21.

ʻO Semiconductor strain gauge he ʻano mea koʻikoʻi e loli like ke kumukūʻai kūʻē i ka wā e huki ʻia a kaomi ʻia. Hoʻopili ʻia nā kānana kānana i ka diaphragm silicon a hoʻopili ʻia e hana i kahi alahaka Wheston. Ke hoʻololi ʻia ka diaphragm silicon, huki ʻia kēlā me kēia kānana kānana a hoʻololi ʻia kona kūʻē ʻana, a loaʻa i ke alahaka ka puka uila.

(2) Kūkulu o ka piezoresistive intake pressure sensor Hōʻike ʻia ka haku mele ʻana o ka semiconductor piezoresistive intake pressure sensor ma ke Kiʻi 8-22. Aia kahi diaphragm silicon i loko o ka mea hoʻololi kaomi o ka mea ʻike, a ʻo ka hoʻololi ʻana o ka hoʻoheheʻe ʻana o ka diaphragm silicon e hoʻopuka i nā hōʻailona uila. ʻO kekahi ʻaoʻao o ka diaphragm silicon he ʻūhā, a ʻo ka ʻaoʻao ʻē aʻe e hoʻokomo ʻia me ke kaomi paipu intake. Ke hoʻololi ke kaomi i loko o ka paipu intake, e loli ka deformation o ka diaphragm silicon e like me ia, a e hana ʻia kahi hōʻailona uila e pili ana i ke kaomi intake. ʻOi aku ka nui o ke kaomi inlet, ʻoi aku ka nui o ka deformation o ka diaphragm silicon a ʻoi aku ka nui o ke kaomi puka o ka sensor.

Loaʻa i ka semiconductor varistor type intake pipe pressure sensor ka maikaʻi o ka linearity maikaʻi, ka nui liʻiliʻi liʻiliʻi, ka pololei kiʻekiʻe a me nā ʻano pane maikaʻi.

1) ʻAno ʻike alapine: hoʻololi ke alapine oscillation o ke kaapuni oscillation me ka waiwai capacitance o ka mea paʻakikī paʻakikī, a ma hope o ka hoʻoponopono ʻana a me ka hoʻonui ʻana, hoʻopuka ʻia ka hōʻailona pulse me ke alapine e pili ana i ke kaomi.

2) ʻAno ʻike Voltage: ua hoʻololi ʻia ka hoʻololi ʻana o ka waiwai capacitance o ka mea pili i ke kaomi e ka nalu lawe a me ka kaapuni AC amplifier, hoʻoheheʻe ʻia e ka kaapuni ʻike, a laila kānana ʻia e ke kaapuni kānana i ka hōʻailona uila e pili ana i ka loli kaomi.