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1.发明公开公开(公告)号：US20240353292A1
公开(公告)日：2024-10-24
申请号：US18642646
申请日：2024-04-22
IPC分类号： G01M15/09
CPC分类号： G01M15/09
摘要： A system for diagnosing a crankcase ventilation system of an internal combustion engine. The system includes an internal combustion engine with at least one combustion chamber. The combustion chamber is bounded by a cylinder head, a cylinder in an engine block, and a piston. The piston is connected via a connecting rod to a crankshaft, which is disposed in a crankcase. An air supply system feeds fresh air into the combustion chamber of the internal combustion engine. At least one aeration line connects the air supply system to the crankcase. At least one vent line, which is different from the aeration line, connect the crankcase to the air supply system. A pressure sensor is disposed in the crankcase or the aeration line. A method for diagnosing a crankcase ventilation system and a control device for carrying out such a method are also provided.
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公开(公告)号：US11761853B2
公开(公告)日：2023-09-19
申请号：US17858816
申请日：2022-07-06
发明人： Haijun Liu , Ninglu Wang , Fei Ma , Baoyu Liu , Lei Li
摘要： An engine piston is provided. A first sealing structure, including a first sealing rubber ring and a first annular groove, is provided at a head of the engine piston. The first sealing rubber ring has a U-shaped section with a reserved space at the top of the first sealing rubber ring, and a gap for circulating hydraulic oil is provided between a ring bank, above the first sealing rubber ring, of the engine piston and a simulated cylinder liner of a fatigue testing apparatus for an engine piston. In a case that the hydraulic oil is introduced into the fatigue testing apparatus for the engine piston to simulate pressure loading under a high-explosion pressure, when the hydraulic oil enters into the reserved space from the gap for circulating the hydraulic oil, an inner wall of the reserved space is squeezed and the first sealing rubber ring is deformed.
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公开(公告)号：US20180156692A1
公开(公告)日：2018-06-07
申请号：US15872675
申请日：2018-01-16
发明人： Shikui Kevin CHEN , Allan J. KOTWICKI , Joel D. VAN ESS , Robert S. BAILEY , Mohammad R. PIRJABERI
CPC分类号： G01M15/05 , F02M35/1038 , G01M15/09
摘要： A variety of methods, diagnostic modules and other arrangements for detecting air induction faults during operation of an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored with the intake pressure being read for each induction opportunity. Induction faults may be detected based at least in part on a comparison of the manifold pressure readings for sequential induction opportunities. In some embodiments, an induction fault is identified when the difference between the manifold pressure associated with an induction opportunity and the immediately preceding induction opportunity exceeds an induction fault threshold.
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公开(公告)号：US09863356B2
公开(公告)日：2018-01-09
申请号：US15193897
申请日：2016-06-27
申请人： Robert Stack , Jonathan D Stoffer
发明人： Robert Stack , Jonathan D Stoffer
CPC分类号： F02D41/222 , F02D41/123 , F02D41/26 , F02D2041/223 , F02D2041/228 , F02D2200/0602 , F02M65/003 , G01M15/09
摘要： A first computer-implemented diagnostic method can run in response to an imminent deceleration fuel cutoff (DFCO) event. A second computer-implemented diagnostic method can run on engine shutdown. Both diagnostic methods involve controlling fuel injectors and a fuel pump to make the fuel rail pressure change from a desired minimum to a desired maximum. Measurements from the fuel rail pressure sensor at these endpoints can then be used to detect a fault of the fuel rail pressure sensor. One or both diagnostic methods can be implemented.
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公开(公告)号：US09856814B2
公开(公告)日：2018-01-02
申请号：US14493072
申请日：2014-09-22
IPC分类号： F02D41/22 , F01N13/00 , F02D41/00 , F02D41/18 , F02D41/14 , F02M26/06 , F02M26/49 , G01M15/05 , G01M15/09 , F02M35/10
CPC分类号： F02D41/22 , F01N13/008 , F02D41/0007 , F02D41/0052 , F02D41/0072 , F02D41/1456 , F02D41/146 , F02D41/18 , F02D2200/0614 , F02M26/06 , F02M26/49 , F02M35/10386 , G01M15/05 , G01M15/09 , Y02T10/47
摘要： A system for detecting a leakage/failure in in an intake line of an internal combustion engine comprising an intake line (IL) and an exhaust line (EL), means (HFM) for measuring or for estimating a quantity of fresh air ({dot over (m)}HFM) entering said intake line (IL), means for measuring or for estimating a quantity of fuel ({dot over (m)}FUEL) injected in the engine (E), measurement or estimation means (λ and/or NOx), on the exhaust line, adapted to provide a first value (λmeasured) of an air/fuel ratio introduced in the internal combustion engine (E), the system comprising processing means (ECU) adapted to calculate a second value (λexp) of said air/fuel ratio, calculated on the basis of the measured and estimated quantities of fresh air ({dot over (m)}HFM) and fuel ({dot over (m)}FUEL) to calculate an error (λerr) between the first and the second value (λmeasured−λexp) and to detect a condition of leakage/failure if said error is outside a predefined interval [λerr−, λerr+] containing the value zero.
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6.发明申请公开(公告)号：US20170328810A1
公开(公告)日：2017-11-16
申请号：US15590097
申请日：2017-05-09
发明人： Toru YAEO
CPC分类号： G01M15/02 , F02M35/10163 , G01M15/00 , G01M15/09 , Y02T10/144
摘要： An electronic control unit diagnoses leakage abnormality in an intake system downstream from a supercharger provided in the intake system of the engine. The electronic control unit sets, as a supercharging region monitoring value, a ratio between a first air amount obtained from a detection value of an air flowmeter and a second air amount obtained from a detection value of an intake pressure sensor, the ratio being the ratio obtained when the engine is operated in a supercharging region. The electronic control unit also sets, as a non-supercharging region monitoring value, a ratio obtained when the engine is driven in a non-supercharging region. The electronic control unit determines the presence of the leakage abnormality in the intake system when the ratio of the supercharging region monitoring value to the non-supercharging region monitoring value is larger than a predetermined specified value.
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公开(公告)号：US09752548B2
公开(公告)日：2017-09-05
申请号：US14272980
申请日：2014-05-08
发明人： DavideGiuseppe Patti , Mario Paparo
CPC分类号： F02P17/12 , F02D35/021 , F02D35/024 , F02D41/22 , F02D41/2422 , F02D41/2425 , G01M15/042 , G01M15/09 , Y02T10/40
摘要： The pressure in the combustion chamber of an electronically controlled spark plug ignition engine may be estimated in real time mode without specific sensors by processing sensed ionization current data to calculate features of the current waveform proven to be correlated to the pressure inside the engine cylinders and correlating them on the basis of a look up table of time invariant correlation coefficients generated through a calibration campaign of tests on a test engine purposely equipped with sensors. A mathematical model of the electrical and physical spark plug ignition system and combustion chamber of the engine is refined during calibration by iteratively testing the interactive performance of correlation coefficients of related terms of a mathematical expression of the model and comparing the expressed pressure value with the real pressure value as measured by a sensor.
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公开(公告)号：US09632009B2
公开(公告)日：2017-04-25
申请号：US14001424
申请日：2012-02-22
申请人： Hartmut Berger
发明人： Hartmut Berger
摘要： Functional faults of a turbo-machine are determined by operating the turbo-machine as a test object in a test stand using one or more gas pressure pulses which are not superimposed onto a substantially constant gas flow and detecting dynamic behavior of the test object using measuring devices, a measuring and control system and an evaluation unit.
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公开(公告)号：US20160305358A1
公开(公告)日：2016-10-20
申请号：US15193897
申请日：2016-06-27
申请人： Robert Stack , Jonathan D. Stoffer
发明人： Robert Stack , Jonathan D. Stoffer
CPC分类号： F02D41/222 , F02D41/123 , F02D41/26 , F02D2041/223 , F02D2041/228 , F02D2200/0602 , F02M65/003 , G01M15/09
摘要： A first computer-implemented diagnostic method can run in response to an imminent deceleration fuel cutoff (DFCO) event. A second computer-implemented diagnostic method can run on engine shutdown. Both diagnostic methods involve controlling fuel injectors and a fuel pump to make the fuel rail pressure change from a desired minimum to a desired maximum. Measurements from the fuel rail pressure sensor at these endpoints can then be used to detect a fault of the fuel rail pressure sensor. One or both diagnostic methods can be implemented.
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公开(公告)号：US20160266000A1
公开(公告)日：2016-09-15
申请号：US14645861
申请日：2015-03-12
申请人： Ying-Chieh Liao , Yu-Kuo Liao
发明人： Ying-Chieh Liao , Yu-Kuo Liao
IPC分类号： G01M3/02
CPC分类号： G01M3/025 , G01M3/2815 , G01M15/09
摘要： An automobile turbocharger examination device is provided. A connection tube set connects an outlet tube of a turbocharger and an inlet tube of an engine to define a detection channel which includes a hard tube portion and a flexible tube portion which is provided for being connected among the hard tube portion, the outlet tube and the inlet tube. The examination device is for being connected between the hard and flexible tube portions. A first connection end of a connection tubular body includes at least one connection tube. One of the at least one connection tube of the first connection end is for being communicably connected with the flexible tube portion, and a second connection end of the connection tubular body is for being communicably connected with the hard tube portion. A pressure-detecting channel is for detecting pressure.
摘要翻译： 提供汽车涡轮增压器检查装置。 连接管组连接涡轮增压器的出口管和发动机的入口管，以限定检测通道，该检测通道包括硬管部分和柔性管部分，柔性管部分设置成连接在硬管部分，出口管和 入口管。 检查装置用于连接在硬和柔性管部分之间。 连接管体的第一连接端包括至少一个连接管。 第一连接端的至少一个连接管中的一个用于与柔性管部分可通信地连接，并且连接管状体的第二连接端用于与硬管部分可通信地连接。 压力检测通道用于检测压力。
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