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1.发明公开
公开(公告)号：EP3767098A1
公开(公告)日：2021-01-20
申请号：EP20183618.6
申请日：2020-07-02
发明人： NISHIDA, Masami , MIYAMAE, Toru , YAMASHITA, Shigeki , TAKEMOTO, Kazuhiro , ITO, Michio , NISHIMURA, Kazuhiro , KAWAI, Yusuke , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro
摘要： A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configured to open and close a suction port, is provided. When a pressurizing cycle consists of a period of pressurizing stroke in which the volume of the pressurizing chamber is reduced to allow fuel to be pressurized and a period of suction stroke in which the volume of the pressurizing chamber is increased to allow fuel to be drawn into the pressurizing chamber, , a closing cycle of the on-off valve is controlled so that a ratio of the closing cycle to the pressurizing cycle becomes smaller in a second combustion mode where a partial compression-ignition combustion is performed than in a first combustion mode where SI combustion is performed.
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公开(公告)号：EP3734049A1
公开(公告)日：2020-11-04
申请号：EP20162968.0
申请日：2020-03-13
发明人： INOUE, Atsushi , KAWAI, Yusuke , CHIKADA, Tetsuya
摘要： A control device for an engine is provided, which includes variable intake and exhaust valve operating mechanisms, a supercharger provided to an intake passage and configured to boost intake air introduced into a cylinder, and a controller. The controller drives the supercharger when the engine operates in a boosted range. The controller controls the variable intake and exhaust valve operating mechanisms so that a valve overlap period during which intake and exhaust valves open simultaneously is formed, when the engine operates in a low-speed boosted range of the boosted range where the engine speed is less than a reference speed. The controller controls the variable exhaust valve operating mechanism so that the open timing of the exhaust valve is more advanced when the engine operates in a high-speed boosted range of the boosted range where the engine speed is greater than or equal to the reference speed.
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3.发明公开
公开(公告)号：EP3572655A1
公开(公告)日：2019-11-27
申请号：EP19174813.6
申请日：2019-05-16
发明人： SUEOKA, Masanari , INOUE, Atsushi , MARUYAMA, Keiji , OHURA, Takuya , NISHIDA, Tomohiro , KAWAI, Yusuke , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro
摘要： A control system for a compression-ignition engine which performs SPCCI combustion in which mixture gas is ignited with a spark plug to be partially combusted by SI combustion and the rest of mixture gas self-ignites to be combusted by CI combustion, is provided. When the engine is operated at least in a given first operating range, a controller of the device controls an intake variable mechanism so that an A/F lean environment where an air-fuel ratio in a cylinder becomes higher than a stoichiometric air-fuel ratio is formed, while causing the spark plug to perform spark ignition at a given timing so that the mixture gas combusts by SPCCI combustion, and controls so that, under the same engine load condition, an intake valve close timing is more retarded as the engine speed decreases, within a range where an amount of air inside the cylinder decreases by retarding the close timing.
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4.发明公开
公开(公告)号：EP3572652A1
公开(公告)日：2019-11-27
申请号：EP19174790.6
申请日：2019-05-16
发明人： SUEOKA, Masanari , INOUE, Atsushi , MARUYAMA, Keiji , OHURA, Takuya , NISHIDA, Tomohiro , KAWAI, Yusuke , CHIKADA, Tetsuya , TOKUNAGA, Tatshuhiro
摘要： A method of implementing control logic of a compression ignition engine is provided. The engine includes a injector, a variable valve operating mechanism, an ignition plug, at least one sensor, and a processor. The processor outputs the signal to the ignition plug in a specific operating state so that unburnt mixture gas combusts by self ignition after the ignition plug ignites the mixture gas inside a combustion chamber. The method includes determining a geometric compression ratio ε of the engine, and determining control logic defining a valve opening angle CA of an intake valve. The valve opening angle CA (deg) is determined so that the following expression is satisfied, if the geometric compression ratio ε is ε -10 NE 3 -1.0×10 -6 NE 2 +7.0×10 -4 NE.
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公开(公告)号：EP3421766A1
公开(公告)日：2019-01-02
申请号：EP17873437.2
申请日：2017-08-24
发明人： MATSUMOTO, Kota , URUSHIHARA, Tomonori , INOUE, Atsushi , KAWAI, Yusuke , MIYAMOTO, Toru , KOSHIRO, Yudai
IPC分类号： F02D45/00 , F02D43/00 , F02D41/04 , F02P5/15 , F02B23/10 , F02B11/00 , F02D21/08 , F02D13/02 , F02D23/00 , F02M26/01 , F02B31/00
摘要： A control apparatus for an engine includes an engine (1), a state quantity setting device (23, 24, 43, 48, 54), a spark plug (25), and a controller (ECU 10). The spark plug ignites air-fuel mixture at predetermined ignition timing so that unburned air-fuel mixture combusts by autoignition after start of combustion of the air-fuel mixture by the ignition, and the controller adjusts a heat amount ratio in accordance with an operation state of the engine through change of the ignition timing, the heat amount ratio representing an index associated with a ratio of an amount of heat generated when the air-fuel mixture combusts by flame propagation with respect to a total amount of heat generated when the air-fuel mixture combusts in the combustion chamber (17).
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公开(公告)号：EP3779155A1
公开(公告)日：2021-02-17
申请号：EP19795976.0
申请日：2019-04-23
发明人： MATSUMOTO, Kota , URUSHIHARA, Tomonori , MARUYAMA, Keiji , SUEOKA, Masanari , ONO, Ryohei , HARADA, Yuji , MIYAMOTO, Toru , INOUE, Atsushi , TOKUNAGA, Tatsuhiro , OHURA, Takuya , KAWAI, Yusuke , NISHIDA, Tomohiro , ARAI, Keita , YAMAGUCHI, Yodai
摘要： The control apparatus according to the present invention is applied to a compression-ignition type engine capable of carrying out partial compression ignition combustion in which some of air-fuel mixture is subjected to SI combustion by spark ignition while the rest of the air-fuel mixture is subjected to CI combustion by self-ignition. This control apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be higher when an engine speed is high than when the engine speed is low.
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7.发明公开
公开(公告)号：EP3690219A1
公开(公告)日：2020-08-05
申请号：EP20153010.2
申请日：2020-01-22
发明人： INOUE, Atsushi , KAWAI, Yusuke
摘要： A control device for a compression ignition engine is provided. At least in a high-load range where an engine load is higher than a given value, among an operating range where a partial compression ignition combustion is performed, an EGR valve is opened, and a first injection in which fuel is injected at least from an intake stroke to the first half of a compression stroke is carried out. While an engine body is operated in the high-load range, when a torque down request and a request for reducing external EGR gas amount introduced into the cylinder are issued, the opening of the EGR valve is reduced, and a second injection in which fuel is injected in the second half of the compression stroke is carried out, and a ratio of a fuel amount of the second injection to the total fuel amount injected in a combustion cycle is increased.
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公开(公告)号：EP3647574A1
公开(公告)日：2020-05-06
申请号：EP18848257.4
申请日：2018-08-23
IPC分类号： F02D41/02 , F02B11/00 , F02B23/02 , F02B23/10 , F02D13/02 , F02D21/08 , F02D23/00 , F02D43/00 , F02M26/22 , F02P5/04
摘要： When the geometric compression ratio of an engine body (2) is set to 13 or more and the engine body operates in a preset high load region, the effective compression ratio of the engine body is set to 12 or more with a difference from the geometric compression ratio being within 2, a gas to be introduced into a combustion chamber (17) is supercharged by a supercharging system (49), fuel is injected at least in a compression stroke by an injector (6), and after the fuel injection is finished, an air-fuel mixture in the combustion chamber is ignited by an ignition plug (25) before the compression top dead center and is thus burned by flame propagation in the engine body, and then the unburned air-fuel mixture is burned by compression ignition.
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9.发明公开
公开(公告)号：EP3572656A1
公开(公告)日：2019-11-27
申请号：EP19174815.1
申请日：2019-05-16
发明人： INOUE, Atsushi , SUEOKA, Masanari , MARUYAMA, Keiji , OHURA, Takuya , NISHIDA, Tomohiro , CHIKADA, Tetsuya , TOKUNAGA, Tatsuhiro , KAWAI, Yusuke
摘要： A compression-ignition engine control system is provided, which includes an intake phase-variable mechanism and a controller. Within a first operating range and a second operating range on a higher engine load side, the controller controls the variable mechanism to form a gas-fuel ratio (G/F) lean environment in which an air-fuel ratio inside a cylinder is near a stoichiometric air-fuel ratio and burnt gas remains inside the cylinder, and controls a spark plug to spark-ignite mixture gas inside the cylinder to combust in a partial compression-ignition combustion. The controller controls the variable mechanism to retard the intake valve open timing on an advancing side of TDC of an exhaust stroke, as the engine load increases within the first range, and advance the intake valve close timing on a retarding side of TDC of intake stroke, as the engine load increases within the second range.
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公开(公告)号：EP4043711A1
公开(公告)日：2022-08-17
申请号：EP21217831.3
申请日：2021-12-27
发明人： URUSHIHARA, Tomonori , SUEOKA, Masanari , KAWAI, Yusuke , INOUE, Atsushi , HIDAKA, Masatoshi , MATSUMOTO, Kota , TANII, Tota , KAWANO, Michiharu , MIYAMOTO, Toru , ITO, Tsubasa
摘要： An internal combustion engine is provided, which includes a variable phase mechanism configured to change rotational phases of intake and exhaust camshafts so that a valve overlap is made. An intake cam lobe is formed such that an open period of the intake valve is 210° or larger and 330° or smaller of a crank angle. The exhaust cam lobe is formed such that, during the overlap period with the rotational phase of the intake camshaft advanced to the maximum and the rotational phase of the exhaust camshaft retarded to the maximum, an effective valve lift amount (Lift(CA)) of the exhaust valve which is a function of a crank angle from the open timing (CA IVO ) of the intake valve to a middle timing (CA center ) of the overlap period, an inner circumferential length (L_ex) of a valve seat, and a swept volume (V) per cylinder satisfy the following formula: 0.015 ≤ L _ ex V × ∫ CA IVO CA center Lift CA dCA .
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