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Patent Agency Ranking
公开(公告)号：US10590823B2
公开(公告)日：2020-03-17
申请号：US15878952
申请日：2018-01-24
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Perry Paielli
Abstract: An exhaust aftertreatment system includes a pump configured to circulate a reagent, an injector configured to deliver the reagent into an exhaust stream, a sensor configured to (i) measure an operating parameter of the aftertreatment system and (ii) output a signal that indicates a value of the measured operating parameter, and a control module configured to control the injector based on the signal outputted by the sensor. The control module includes a correction coefficient determination module configured to generate a correction coefficient based on the signal outputted by the sensor. The control module further includes an injector control module configured to receive an injector flow control signal, determine a pulse width modulation (PWM) signal based on at least the injector flow control signal, and generate an injector control signal that controls actuation of the injector based on at least the correction coefficient and the PWM signal.
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公开(公告)号：US20180328444A1
公开(公告)日：2018-11-15
申请号：US16044922
申请日：2018-07-25
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Perry Paielli
CPC classification number: F16F9/341 , B60G13/08 , B60G17/06 , B60G2202/24 , B60G2500/11 , F16F9/325 , F16F9/3271 , F16F9/34 , F16F9/5126 , F16F2230/32
Abstract: A valve assembly includes a first valve plate defining at least one first opening and at least one second opening. A valve element located above the first valve plate has a central portion, and at least one tab extending outwards from the central portion. The at least one tab includes a narrow portion axially aligned with the at least one first opening such that the narrow portion at least partially covers the at least one first opening. The at least one tab is selectively provided with electrical energy to melt the narrow portion to form an orifice. The orifice is fluidly coupled with the at least one first opening.
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公开(公告)号：US10746248B2
公开(公告)日：2020-08-18
申请号：US16044922
申请日：2018-07-25
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Perry Paielli
Abstract: A valve assembly includes a first valve plate defining at least one first opening and at least one second opening. A valve element located above the first valve plate has a central portion, and at least one tab extending outwards from the central portion. The at least one tab includes a narrow portion axially aligned with the at least one first opening such that the narrow portion at least partially covers the at least one first opening. The at least one tab is selectively provided with electrical energy to melt the narrow portion to form an orifice. The orifice is fluidly coupled with the at least one first opening.
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公开(公告)号：US10648385B2
公开(公告)日：2020-05-12
申请号：US15890409
申请日：2018-02-07
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Perry Paielli
Abstract: A DEF injector is configured to inject DEF into an exhaust system of a vehicle. A DEF pump includes an electric motor configured to drive a compression mechanism and pumps the DEF to the DEF injector. A pressure sensor is configured to measure a pressure of the DEF output from the DEF pump. A sampling module is configured to, based on a rotational position of an output shaft of the electric motor, selectively output samples of the pressure. A measurement module is configured to determine a measured pressure at the pressure sensor based on a present one of the samples and a last one of the samples output before the present one of the samples. A pump control module is configured to apply power from a power source to the electric motor based on a difference between the measured pressure and a target pressure.
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公开(公告)号：US10473015B2
公开(公告)日：2019-11-12
申请号：US15727976
申请日：2017-10-09
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Perry Paielli
Abstract: A pressure sensor includes: a housing; a substrate that is fixed within the housing, that includes a first side that is in contact with a fluid of an exhaust aftertreatment system, and that flexes based on a pressure of the fluid; a first voltage divider that is connected between a first reference potential and a ground potential and that varies a first potential based on flexing of the substrate; and a second voltage divider connected in parallel with the first voltage divider between the first reference potential and the ground potential and that varies a second potential based on flexing of the substrate. A pressure control module is configured to selectively switch switches to connect and disconnect different reference potentials to and from an amplifier, to sample an output of the amplifier, and to convert samples of the output of the amplifier into corresponding digital values.
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