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公开(公告)号：US20190331035A1
公开(公告)日：2019-10-31
申请号：US16476952
申请日：2017-02-01
摘要： An intake control method for an internal combustion engine equipped with a low-pressure EGR system includes setting a target intake pressure, which is a target value of an intake pressure in an intake passage between a negative pressure generating valve and an intake throttle valve, necessary for performing EGR control in a state of an exhaust pressure determined for each operating point, setting a target total opening area, which is a sum of a target opening area of an EGR valve and a target opening area of the negative pressure generating valve, on the basis of the target intake pressure, a target fresh air amount, and a target EGR gas amount, setting a target EGR valve opening area, which is an opening area of the EGR valve for achieving the target EGR gas amount, assuming that the negative pressure generating valve is fully open, and setting a value obtained by subtracting the target EGR valve opening area from the target total opening area to be a target negative pressure generating valve opening area, which is a target value of an opening area of the negative pressure generating valve.
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公开(公告)号：US20220274060A1
公开(公告)日：2022-09-01
申请号：US17612769
申请日：2019-05-22
摘要： A catalytic converter is provided with: an inlet-side diffuser part; an outlet-side diffuser part; a case including an upstream-side cylindrical part and a downstream-side cylindrical part; an inner liner provided in the upstream-side cylindrical part; a first catalyst retained inside the inner liner; and a second catalyst retained inside the downstream-side cylindrical part. An end face of the second catalyst faces a peripheral surface of the inner liner. An annular flow path is provided between the upstream-side cylindrical part and the inner liner, and the first catalyst is insulated from heat by the annular flow path. A part of exhaust flows into the second catalyst via the annular flow path.
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公开(公告)号：US20190234328A1
公开(公告)日：2019-08-01
申请号：US16330934
申请日：2016-09-07
摘要： A basic opening (A0) of an EGR control valve (22) is set, based on a current engine operation state. A differential pressure (ΔP1) across the EGR control valve (22) is calculated, based on an actual exhaust system temperature (T1) sensed by an exhaust temperature sensor (33). A reference differential pressure (ΔP0) is calculated, which is a differential pressure across the EGR control valve (22) in a steady state corresponding to the current engine operation state. A reference pulsation amplitude (D) is calculated, which is an amplitude of pulsation of the reference differential pressure (ΔP0). The basic opening (A0) is corrected, based on the differential pressure (ΔP1), the reference differential pressure (ΔP0), and the reference pulsation amplitude (D).
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公开(公告)号：US20220412294A1
公开(公告)日：2022-12-29
申请号：US17620825
申请日：2019-06-21
发明人： Ryo UCHIDA , Takayuki HAMAMOTO , Yuta KANASHIMA
摘要： The intake air cooling device 100A constitutes a heat exchange device that performs heat exchange of the intake air of the internal combustion engine 6. The intake air cooling device 100A includes the heat exchange part 1A configured to perform heat exchange between the cooling liquid W that is introduced thereto and the intake air that is passing therethrough, and the intake air control valve 2 configured to perform control of the intake air that passes through the heat exchange part 1A. The cooling liquid introduction port 13 of the heat exchange part 1A and the intake air control valve 2 are provided at positions opposing each other with respect to the heat exchange part 1A.
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5.发明申请公开(公告)号：US20190353109A1
公开(公告)日：2019-11-21
申请号：US16476946
申请日：2017-01-16
摘要： A control method for an internal combustion engine including: setting a target valve opening degree of the first throttle valve in accordance with a load, sensing a valve opening degree of the second throttle valve, judging whether or not the valve opening degree of the second throttle valve is an opening degree on a closing side relative to a predetermined set valve opening degree, and correcting the valve opening degree of the first throttle valve to the opening degree on the closing side relative to the target valve opening degree when it is judged that the valve opening degree of the second throttle valve is the opening degree on the closing side relative to the predetermined set valve opening degree.
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6.发明申请公开(公告)号：US20180252167A1
公开(公告)日：2018-09-06
申请号：US15760389
申请日：2015-09-18
CPC分类号： F02D9/02 , F02D9/105 , F02D41/0007 , F02D41/005 , F02D2009/0272 , F02D2009/0276 , F02D2041/0017 , F02D2200/0404 , F02M26/15 , F02M2026/009 , Y02T10/47
摘要： An internal combustion engine includes an intake passage of the internal combustion engine, an exhaust passage of the internal combustion engine, and an EGR passage connecting the intake passage and the exhaust passage. The internal combustion engine further includes a throttle valve provided downstream of a connected part to the EGR passage in the intake passage, and configured to control an intake air quantity toward a downstream side of the connected part, and an intake throttle valve provided upstream of the connected part to the EGR passage in the intake passage. In a control device of the internal combustion engine, an opening degree of the intake throttle valve is determined on the basis of an opening degree of the throttle valve.
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公开(公告)号：US20220268222A1
公开(公告)日：2022-08-25
申请号：US17639470
申请日：2019-09-06
摘要： An EGR valve is provided in an EGR passage circulating a part of an exhaust gas of an exhaust pipe in an intake pipe as an EGR gas, the EGR valve adjusting an EGR gas amount flowing in the EGR passage when an engine is in an EGR region, a differential pressure device is provided in the intake pipe, the differential pressure device adjusting a differential pressure of the EGR valve, a control unit is provided to control the EGR valve and the differential pressure device, and the EGR control method includes switching whether to adjust the EGR gas amount using the EGR valve and the differential pressure device or to adjust the EGR gas amount using the EGR valve only on the basis of an exhaust gas pressure of an inlet portion of the EGR passage.
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8.发明申请公开(公告)号：US20180258871A1
公开(公告)日：2018-09-13
申请号：US15759913
申请日：2015-09-18
发明人： Takayuki HAMAMOTO
摘要： An internal combustion engine includes an intake passage of the internal combustion engine, an exhaust passage of the internal combustion engine, an EGR passage connecting the intake passage and the exhaust passage. The internal combustion engine further includes a throttle valve provided downstream of a connected part to the EGR passage in the intake passage, and configured to control a quantity of intake air flowing into the internal combustion engine, and an intake throttle valve provided upstream of the connected part to the EGR passage in the intake passage. A control device controls the internal combustion engine, in which device an opening degree of the intake throttle valve is determined on the basis of an intake air quantity.
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公开(公告)号：US20170234202A1
公开(公告)日：2017-08-17
申请号：US15504356
申请日：2014-09-03
CPC分类号： F01N13/10 , F01N3/24 , F01N3/2892 , F01N2340/02 , F01N2470/18 , F01N2470/20 , F02F1/42 , F02F1/4264
摘要： In inline four cylinder internal combustion engine (1), exhaust ports for a #2 cylinder and a #3 cylinder merge inside cylinder head (3) and form an opening serving as a single collective exhaust port. Exhaust manifold (5) has individual exhaust pipes (6, 7) for #1 and #4 cylinders and collective exhaust pipe (8), and the leading ends of these three exhaust pipes (6, 7, 8) are connected to catalytic converter (11). Exhaust gas introduction angle (θ2) of each of individual exhaust pipes (6, 7) is larger by 30-60 degrees than exhaust gas introduction angle (θ1) of collective exhaust pipe (8). Consequently, flow velocity distribution and temperature distribution in a catalyst carrier become uniform.
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公开(公告)号：US20230056691A1
公开(公告)日：2023-02-23
申请号：US17794309
申请日：2020-01-23
IPC分类号： B60K11/04
摘要： A vehicle cooling device includes a first heat exchanger and a second heat exchanger. The first heat exchanger is a water-cooled intercooler that is configured to cool supercharged intake air. The second heat exchanger is a water-cooled EGR gas cooler that is configured to cool EGR gas. The first heat exchanger and the second heat exchanger are arranged in series on a cooling water circuit such that cooling water flowing out of the first heat exchanger flows into the second heat exchanger. The second heat exchanger is arranged in a position relatively lower than a height position of the first heat exchanger when the cooling device has been installed in a vehicle. Due to this height difference, the cooling water in the second heat exchanger has high pressure, and boiling of the cooling water is suppressed.
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