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公开(公告)号：US09757748B2
公开(公告)日：2017-09-12
申请号：US14425126
申请日：2013-07-30
发明人： Martin A. P. Sykes , Alasdair Mitchel , Nick Smith
IPC分类号： B05B1/24 , B05B9/04 , H01F7/18 , F02D41/20 , F02D41/22 , F01N3/20 , B05B3/00 , G01R31/00 , G01R31/28 , H03K17/0814 , H03K17/082 , H03K17/18 , F02M51/04 , F02M59/10
CPC分类号： B05B9/0413 , B05B3/001 , F01N3/2066 , F01N3/208 , F01N2610/02 , F01N2610/11 , F01N2610/146 , F02D41/20 , F02D41/221 , F02D2041/2034 , F02D2041/2041 , F02D2041/2051 , F02D2041/2058 , F02D2041/2068 , F02D2041/2089 , F02M51/04 , F02M59/10 , G01R31/006 , G01R31/2829 , H01F7/06 , H01F7/1811 , H03K17/08142 , H03K17/0822 , H03K17/18 , Y02A50/2325 , Y02T10/24 , Y02T10/40 , Y10T29/49002
摘要： A fluid injector comprising a coil arranged to drive a pump from a first state to a second state when energized, so as to pump a dosing fluid; a PN junction electrically arranged across the coil to discharge energy stored in the coil when the voltage across the coil is above a threshold. In one particular embodiment, the fluid injector is a selective catalytic reduction dosing fluid injector.
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公开(公告)号：US09618557B2
公开(公告)日：2017-04-11
申请号：US14420451
申请日：2013-07-30
发明人： Martin A. P. Sykes
CPC分类号： G01R31/006 , F01N3/2066 , F01N11/00 , F01N2550/05 , F01N2900/0422 , F01N2900/1821 , F02D41/20 , F02D41/221 , F02D2041/2034 , F02D2041/2041 , F02D2041/2051 , F02D2041/2058 , F02D2041/2068 , F02D2041/2089 , G01R31/025 , H01F7/1844 , Y02A50/2325 , Y02T10/24 , Y02T10/40 , Y02T10/47
摘要： A diagnostic circuit arranged to measure an electrical characteristic in a drive circuit of a coil of a fluid injector and compare the measured electrical characteristic with another electrical characteristic to determine whether a PN junction is working to discharge electrical energy in the coil of the fluid injector, in particular a selective catalytic reduction dosing injector.
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