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公开(公告)号：US11333107B2
公开(公告)日：2022-05-17
申请号：US17012313
申请日：2020-09-04
发明人： Ola Rolandson
摘要： The exhaust gas recirculation (EGR) system provided herein utilizes a crossover (X) valve that is selectively activated at the direction of the electronic control module (ECM) to mix the high temperature (HT) and low temperature (LT) circuits of the EGR system under certain predetermined operating conditions. Thus, HT circuit fluid (at engine temperatures) is selectively fed into the LT circuit fluid (at ambient temperatures) to heat certain LT circuit components that are normally cooled by the LT circuit before starting the low pressure (LP) EGR in certain cold cycles. When this heating is finished, the X valve is closed to provide normal HT circuit/LT circuit fluid separation. The X valve can be controlled using a rotational actuator or the like. To avoid exposing the LT circuit to the high revolution-per-minute (RPM) operating conditions of the HT circuit, a HT bypass mechanism is provided.
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公开(公告)号：US20220112868A1
公开(公告)日：2022-04-14
申请号：US17070396
申请日：2020-10-14
申请人： Bogdan A. Nitu , Fadi Estefanous , Luron Zhong
发明人： Bogdan A. Nitu , Fadi Estefanous , Luron Zhong
摘要： An internal combustion engine system includes an engine, an air intake system configured to provide intake air to the engine, and an exhaust system configured to receive exhaust gas from the engine. The engine system further includes a secondary air system including a pump, an exhaust gas recirculation (EGR) system, and a valve system operably associated with the secondary air system and the EGR system. The valve system is configured to operate in a secondary air mode where the pump is utilized to supply secondary air to the exhaust system, and an EGR mode where the pump is utilized to supply EGR to the air intake system.
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公开(公告)号：US11236664B2
公开(公告)日：2022-02-01
申请号：US16975909
申请日：2019-02-28
申请人： TENNECO GMBH
IPC分类号： F02B37/18 , F02M26/05 , F02M26/06 , F02M26/07 , F02M26/15 , F02M26/23 , F02M26/35 , F02M26/42 , F01N3/031 , F01N3/035 , F01N3/10 , F01N3/20 , F02B47/08
摘要： The disclosure relates to an exhaust gas conduction system for a gasoline engine, comprising an exhaust gas line which can be connected to an exhaust manifold of the gasoline engine, an intake line which can be connected to an intake manifold of the gasoline engine, a charge air compressor which is arranged in the intake line, and a turbine which is arranged in the exhaust gas line. The exhaust gas line has at least one bypass line with a bypass throttle valve, said line branching off from the exhaust gas line upstream of the turbine and branching back into the exhaust gas line at an opening downstream of the turbine. At least one exhaust gas recirculation line with an EGR throttle valve is provided, said line opening into the intake line, wherein the exhaust gas recirculation line branches off from the bypass line at a branch, and the bypass throttle valve is arranged upstream of the branch of the exhaust gas recirculation line. At least one particle filter is arranged in the bypass line downstream of the branch of the exhaust gas recirculation line, and an exhaust gas valve is provided in the exhaust gas line upstream of the opening of the bypass line.
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公开(公告)号：US11111870B2
公开(公告)日：2021-09-07
申请号：US16781231
申请日：2020-02-04
发明人： Tomokuni Kusunoki
摘要： A method of determining an abnormality of a differential pressure sensor which is configured to detect a pressure differential between an upstream side and a downstream side of an EGR valve provided to an EGR passage of an engine, is provided. The method includes the steps of controlling an opening of the EGR valve based on an output value of the differential pressure sensor, determining the abnormality of the differential pressure sensor based on the output value of the differential pressure sensor, controlling at least a throttle valve of the engine toward a closed side so that the pressure differential is maintained at a given pressure or higher when determining, and prohibiting the execution of the abnormality determination when an engine speed is a given engine speed or higher, and permitting the execution of the abnormality determination when the engine speed is less than the given engine speed.
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公开(公告)号：US11067014B2
公开(公告)日：2021-07-20
申请号：US16036056
申请日：2018-07-16
申请人： Cummins Inc.
发明人： Marten H. Dane , J. Steven Kolhouse , Thomas M. Yonushonis , J. Stephen Wills , Samuel C. Geckler
IPC分类号： F02D41/00 , F02B29/04 , F02D13/02 , F02M45/02 , F02M26/06 , F02M26/15 , F02M26/25 , F02M26/27 , F02M26/28 , F02M26/24 , F02M26/33 , F02D41/04 , F02D9/04 , F02D35/02
摘要： A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value.
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公开(公告)号：US10920683B2
公开(公告)日：2021-02-16
申请号：US16624446
申请日：2018-06-04
发明人： Takafumi Arakawa , Kunihiko Suzuki , Yoichi Iihoshi , Haoyun Shi , Toshio Hori , Yoshikuni Kurashima
摘要： Provided is a novel control device of an internal combustion engine capable of estimating an EGR rate in a transient state with high accuracy. Thus, in the present invention, unit spaces are formed by dividing a reference space of the intake passage into a plurality of spaces along a streamline through which the gas mixture of the intake air and the EGR gas flows, a physical model based on an advection equation for estimating the EGR rate of the gas mixture is established so as to correspond to each of the unit spaces, and the EGR rate at which the gas mixture flows into the combustion chamber is estimated by sequentially estimating the EGR rates of the unit spaces connected to head unit spaces from the head unit spaces by the physical model.
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公开(公告)号：US10920661B2
公开(公告)日：2021-02-16
申请号：US16109581
申请日：2018-08-22
IPC分类号： F02B37/18 , F02D41/02 , F02D23/00 , F02D41/00 , F02M26/00 , F01N13/08 , F01N13/10 , F02B39/10 , F02B39/04 , F02M26/07 , F02M26/06 , F02B39/00 , F01N13/00 , F02M26/05 , F02B37/10 , F02M26/42 , F02B37/04 , F02B37/00 , F01N3/00
摘要： Disclosed is a turbine bypass for an engine with a driven turbocharger. During engine cold start, or periods of idle or low load engine operation, the bypass can be utilized to direct hot exhaust gasses directly to an exhaust aftertreatment. This provides higher temperatures to the exhaust aftertreatment, increasing the ability to eliminate harmful emissions such as NOx. The driven turbocharger can still provide boost to the engine through supercharging, so that engine torque and power can be maintained while the turbine bypass is in operation.
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公开(公告)号：US10808630B2
公开(公告)日：2020-10-20
申请号：US16485849
申请日：2018-01-31
发明人： Naoki Yoneya , Masayuki Saruwatari
摘要： There is a problem of a difficulty in estimating the temporal change of the MBT for each of cylinders with light calculation load and high accuracy. An object of the present invention is to provide a control device capable of detecting a temporal change in the fuel efficiency optimum ignition timing (MBT) for each of cylinders. Therefore, the control device for internal combustion engine includes a control unit (CPU) that estimates an optimum ignition timing of each of cylinders from the relationship between the phase angle (θTmax) at which the torque peaks and the phase angle (θPmax) at which the in-cylinder pressure peaks with respect to the ignition timing of the cylinder.
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公开(公告)号：US10794338B2
公开(公告)日：2020-10-06
申请号：US16002899
申请日：2018-06-07
摘要： Methods and systems are provided for managing condensate within an inlet of a turbine. In one example, a method or system may include using a channel shape along a wall of an inlet. The channel shape transporting condensate to deliver the condensate to a wheel or rotor.
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10.发明申请公开(公告)号：US20200232423A1
公开(公告)日：2020-07-23
申请号：US16251162
申请日：2019-01-18
发明人： Ola ROLANDSON
摘要： The exhaust gas recirculation (EGR) system provided herein utilizes a crossover (X) valve that is selectively activated at the direction of the electronic control module (ECM) to mix the high temperature (HT) and low temperature (LT) circuits of the EGR system under certain predetermined operating conditions. Thus, HT circuit fluid (at engine temperatures) is selectively fed into the LT circuit fluid (at ambient temperatures) to heat certain LT circuit components that are normally cooled by the LT circuit before starting the low pressure (LP) EGR in certain cold cycles. When this heating is finished, the X valve is closed to provide normal HT circuit/LT circuit fluid separation. The X valve can be controlled using a rotational actuator or the like. To avoid exposing the LT circuit to the high revolution-per-minute (RPM) operating conditions of the HT circuit, a HT bypass mechanism is provided.
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