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公开(公告)号：US12123803B2
公开(公告)日：2024-10-22
申请号：US17412834
申请日：2021-08-26
Applicant: University of Idaho
Inventor： Kamal Kumar
CPC classification number: G01M15/08 , G01M15/02 , G01M15/048 , G01M15/06
Abstract: A rapid compression machine (RCM) employs an electrical drive to move a piston disposed within a chamber housing. The electrical drive converts electrical power into linear motion of the piston, for example, to compress contents in a reaction chamber defined by the chamber housing and the piston. The temperature and pressure changes induced by the compression can cause reaction of contents within the chamber, for example, autoignition of the contents. The RCM can thus be used to study chemical kinetics. In some embodiments, the electrical drive can also rapidly move the piston in reverse to expand a volume of the reaction chamber, for example, to quench the compression-induced reaction therein. In such embodiments, the RCM may be considered a rapid compression-expansion machine (RCEM) and can be used for speciation studies.
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公开(公告)号：US11473994B2
公开(公告)日：2022-10-18
申请号：US17185719
申请日：2021-02-25
Applicant: Yantai Huazheng Instrument Co., Ltd.
Inventor： Zhigang Wang , Yanzhi Li , Tao Li
Abstract: It is provided a portable tester for leakage rate of a cylinder of an automobile engine. The portable tester includes a shell; wherein a circuit board and a manifold body are provided in the shell; a throttle hole is provided inside the manifold body, the shell includes a front shell and a rear shell; a display and a control key are provided respectively at an upper end of and at a middle part of the front shell; the circuit board is provided with a decoding drive electrically connected with the display, and a single chip microcomputer unit is provided on the decoding drive and electrically connected with the control key; an air inlet connecter and an air outlet connector are provided at the lower end of the front shell. Two ends of the manifold body are provided with sensors electrically connected with the single chip microcomputer unit.
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公开(公告)号：US11112333B2
公开(公告)日：2021-09-07
申请号：US15763602
申请日：2016-09-21
Applicant: DENSO CORPORATION
Inventor： Atsunori Okabayashi , Shinya Hoshi
IPC: G01M15/02 , F02D35/02 , F02D19/06 , F02D41/22 , F02B77/08 , F02B77/04 , G01M15/04 , G01M15/08 , G01M15/11 , F02M26/25
Abstract: A sensor failure diagnostic apparatus includes a first estimation unit to estimate a mixing ratio of each type of a molecular structure included in a fuel, based on combustion parameters when a combustion of an internal combustion engine is executed in different combustion conditions, among the combustion parameters sensed by a combustion sensor, a second estimation unit to estimate the mixing ratio, based on characteristic parameters sensed by a characteristic sensor, a combustion sensor diagnostic unit to determine whether a failure of the combustion sensor exists, based on a sensed value of the combustion sensor when the combustion is not executed, and a characteristic sensor diagnostic unit to determine whether a failure of the characteristic sensor exists, by comparing the mixing ratio estimated by the first estimation unit with the mixing ratio estimated by the second estimation unit when the combustion sensor diagnostic unit determines the combustion sensor is normal.
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公开(公告)号：US11035755B2
公开(公告)日：2021-06-15
申请号：US16589425
申请日：2019-10-01
Applicant: Caterpillar Inc.
Inventor： Bradley D. Hemmingsen , Justin D. Bushman
Abstract: An in-cylinder pressure sensor system and a pressure sensor adaptor that allows for the inclusion of a pressure sensor to monitor the pressure of an engine cylinder is provided. The pressure sensor adaptor includes a first end, a second end, a threaded section, a cylindrical midsection, and an annular section; and a pressure sensor channel that comprises an opening in the first end and an opening in a second end and spans from the first end to the second end through the threaded section, the cylindrical midsection, and the annular section. The pressure sensor may be housed in the pressure sensor channel of the pressure sensor adaptor.
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公开(公告)号：US10883897B2
公开(公告)日：2021-01-05
申请号：US15745516
申请日：2016-07-14
Applicant: INNIO Jenbacher GmbH & Co OG
Inventor： Herbert Kopecek , Klaus Zoeggeler , Markus Kroell , Thomas Weitzer , Moritz Froehlich
Abstract: A method for transmitting the cylinder pressure data of a plurality of cylinder pressure sensors to a central processing unit, characterized by the use of a communication system for isochronous data transmission comprising a data bus, whereby the plurality of cylinder pressure sensors and the central processing unit are connected via the data bus, whereby each of the plurality of cylinder pressure sensors are combined with a data acquisition unit and a data communication unit to form a measurement node, whereby the cylinder pressure data is transmitted from the measurement node to the central processing unit via a time-slot method.
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Patent Agency Ranking
公开(公告)号：US10774757B2
公开(公告)日：2020-09-15
申请号：US16134036
申请日：2018-09-18
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Elmar Millich , Lars Petersen , René Kleinhans , Andre Shurkewitsch , Jean-Sebastian Tempel
Abstract: A method for determining the quantity of filling components in a cylinder of an internal combustion engine. The cylinder is connected to an air supply via an inlet valve and to an exhaust gas conduit via an outlet valve. The method includes the steps of obtaining an exhaust gas back pressure at a specified point in time when the outlet valve is opened during a work cycle of the internal combustion engine and calculating the quantity of the filling components at the specified point in time on the basis of the obtained exhaust gas back pressure. A controller is also provided for carrying out the method and a motor vehicle is also provided that includes the controller.
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公开(公告)号：US10767592B2
公开(公告)日：2020-09-08
申请号：US16459969
申请日：2019-07-02
Applicant: Mazda Motor Corporation
Inventor： Shoji Fujiwara , Hidetoshi Hashimoto , Takuji Okumura , Shigeru Nakagawa , Yasushi Torii , Masayuki Kinoshita , Yuichiro Tsumura , Daisuke Tanaka , Taiki Maiguma
Abstract: A failure diagnosis device for an in-cylinder pressure sensor includes an in-cylinder pressure sensor, and a controller comprised of circuitry configured to execute a diagnosis module into which a signal of the in-cylinder pressure sensor is inputted and configured to diagnose a failure of the sensor based on the signal. The diagnosis module includes a reading module configured to read the signals of the in-cylinder pressure sensor at a first timing that is a timing retarded by a specific crank angle from a compression top dead center, and at a second timing that is a timing advanced by the specific crank angle from the compression top dead center, and a failure determining module configured to determine that the in-cylinder pressure sensor has failed when the failure determining module determines that a difference between signal values at the first timing and at the second timing exceeds a predefined threshold.
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公开(公告)号：US20200072150A1
公开(公告)日：2020-03-05
申请号：US16459969
申请日：2019-07-02
Applicant: Mazda Motor Corporation
Inventor： Shoji Fujiwara , Hidetoshi Hashimoto , Takuji Okumura , Shigeru Nakagawa , Yasushi Torii , Masayuki Kinoshita , Yuichiro Tsumura , Daisuke Tanaka , Taiki Maiguma
Abstract: A failure diagnosis device for an in-cylinder pressure sensor includes an in-cylinder pressure sensor, and a controller comprised of circuitry configured to execute a diagnosis module into which a signal of the in-cylinder pressure sensor is inputted and configured to diagnose a failure of the sensor based on the signal. The diagnosis module includes a reading module configured to read the signals of the in-cylinder pressure sensor at a first timing that is a timing retarded by a specific crank angle from a compression top dead center, and at a second timing that is a timing advanced by the specific crank angle from the compression top dead center, and a failure determining module configured to determine that the in-cylinder pressure sensor has failed when the failure determining module determines that a difference between signal values at the first timing and at the second timing exceeds a predefined threshold.
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公开(公告)号：US10393604B2
公开(公告)日：2019-08-27
申请号：US15529888
申请日：2015-11-27
Applicant: AVL LIST GmbH
Inventor： Felix Pfister , Stefan Jakubek
Abstract: In a test run, in order to easily provide a high-quality propulsion torque of a torque generator based on the partially low-quality measured variables available on the test bench, it is foreseen that an inner torque (Mi) of the torque generator (D) is measured and based on the measured inner torque (Mi), from an equation of motion, including the measured inner torque (Mi), a dynamic torque (Mdyn) and a shaft torque (Mw) measured on the output shaft of the torque generator (D), a correction torque ({circumflex over (M)}cor) is estimated, and from the estimated correction torque ({circumflex over (M)}cor) and the measured inner torque (Mi), the propulsion torque (Mv) according to the relation Mv={circumflex over (M)}cor+Mi is computed.
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公开(公告)号：US20180372587A1
公开(公告)日：2018-12-27
申请号：US15903441
申请日：2018-02-23
Applicant: DENSO CORPORATION
Inventor： Tomofumi YOSHIDA , Yoshiyasu FUTAMURA , Shinya NODA
Abstract: In adjustment processing executed at the same period as waveform analysis processing, a CPU of a microcomputer permits an execution of the waveform analysis processing on condition that the waveform analysis processing has been completed. Thus a period of non-execution of the waveform analysis processing is ensured between a completion of preceding waveform analysis processing to an execution of next waveform analysis processing. Since low priority processing, which has been disabled to be executed, is enabled to be executed, it is possible to stop continuation of disablement of execution of the low priority processing.
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