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公开(公告)号：US10711676B2
公开(公告)日：2020-07-14
申请号：US16069106
申请日：2017-01-12
Applicant: Cummins, Inc.
Inventor： Bharath Sundar , Apurva Arvind Chunodkar , Michael Haas , Astha Kukreja
Abstract: An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status.
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公开(公告)号：US11286827B2
公开(公告)日：2022-03-29
申请号：US16927727
申请日：2020-07-13
Applicant: Cummins Inc.
Inventor： Bharath Sundar , Apurva Arvind Chunodkar , Michael Haas , Astha Kukreja
Abstract: A system has a pump and an injector coupled to the pump. The system further comprises a controller coupled to the pump and the injector. The controller is structured to: determine a change of reductant flow relative to a change of pump rate of the pump; and generate a status command indicative of at least one of an under-restricted injector or an over-restricted injector in response to the determination of the change of reductant flow relative to the change of pump rate of the pump.
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公开(公告)号：US20200340381A1
公开(公告)日：2020-10-29
申请号：US16927727
申请日：2020-07-13
Applicant: Cummins Inc.
Inventor： Bharath Sundar , Apurva Arvind Chunodkar , Michael Haas , Astha Kukreja
Abstract: A system has a pump and an injector coupled to the pump. The system further comprises a controller coupled to the pump and the injector. The controller is structured to: determine a change of reductant flow relative to a change of pump rate of the pump; and generate a status command indicative of at least one of an under-restricted injector or an over-restricted injector in response to the determination of the change of reductant flow relative to the change of pump rate of the pump.
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公开(公告)号：US20190003362A1
公开(公告)日：2019-01-03
申请号：US16069106
申请日：2017-01-12
Applicant: Cummins, Inc.
Inventor： Bharath Sundar , Apurva Arvind Chunodkar , Michael Haas , Astha Kukreja
CPC classification number: F01N3/208 , F01N3/106 , F01N11/00 , F01N11/002 , F01N13/009 , F01N2550/05 , F01N2550/14 , F01N2610/02 , F01N2610/144 , F01N2610/146 , F01N2900/1812 , F01N2900/1821 , F01N2900/1822 , Y02T10/24 , Y02T10/47
Abstract: An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status.
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