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公开(公告)号：US20190145305A1
公开(公告)日：2019-05-16
申请号：US15759517
申请日：2016-07-29
发明人： Yuusuke KIHARA , Yoshihiro SUKEGAWA , Kazuhiro ORYOJI , Kenichiro OGATA , Minoru OOSUGA , Masayuki SARUWATARI
摘要： An object of the invention is to form a highly homogeneous air-fuel mixture which is not influenced by an engine rotation speed. Therefore, the invention provides a fuel injection control device including a cylinder, a first injector disposed at an upper portion of the cylinder in the axial direction and a center portion thereof in the radial direction, an intake valve disposed at an upper portion of the cylinder in the axial direction and an outer portion thereof in the radial direction in relation to the first fuel injection device, and a second injector supplying fuel from an upper portion of the cylinder in the axial direction and at least an outer portion in the radial direction in relation to the intake valve, in which a rotation speed of the engine is high, a fuel supply amount ratio of the first injector with respect to the second injector is controlled to be larger than that of a case where the rotation speed is low.
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公开(公告)号：US20130110377A1
公开(公告)日：2013-05-02
申请号：US13660406
申请日：2012-10-25
IPC分类号： F02D41/34
CPC分类号： F02D41/345 , F02D13/0265 , F02D41/0062 , F02D2041/001 , F02M26/01 , Y02T10/44 , Y02T10/47
摘要： A fuel injection apparatus for an internal combustion engine of port injection type is configured to change a ratio between a fuel injection period in an exhaust stroke and one in an inlet stroke in accordance with an internal EGR rate.
摘要翻译： 一种用于端口喷射型内燃机的燃料喷射装置被配置为根据内部EGR率改变排气行程中的燃料喷射期间与入口行程中的燃料喷射期间之间的比率。
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公开(公告)号：US20210363937A1
公开(公告)日：2021-11-25
申请号：US17057272
申请日：2019-02-13
摘要： In an internal combustion engine, combustion stability is improved while exhaust gas emission is suppressed. For this purpose, a control device (1) for controlling an injector (103) is configured to include a control unit (21) that controls the injector (103) to perform a first fuel injection (1001) for injecting fuel at a first fuel pressure from the injector (103) in an intake stroke (S1) in one combustion cycle of an internal combustion engine (100) and a second fuel injection (1002) for injecting fuel at a second fuel pressure higher than the first fuel pressure from the injector (103) after the first fuel injection (1001) in the same one combustion cycle in the intake stroke (S1).
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公开(公告)号：US20210131372A1
公开(公告)日：2021-05-06
申请号：US16481304
申请日：2018-02-05
发明人： Tomoyuki HOSAKA , Taisuke SUGII , Eiji ISHII , Kazuki YOSHIMURA , Yoshihiro SUKEGAWA , Masayuki SARUWATARI
摘要： An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.
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公开(公告)号：US20190390591A1
公开(公告)日：2019-12-26
申请号：US16484043
申请日：2018-02-02
摘要： Provided is a piston for an internal combustion engine, the piston enabling both an improvement in heat efficiency and a reduction in emissions, and enabling the prevention of overheating of the piston to prevent the occurrence of knocking, pre-ignition, and a drop in air filling efficiency. This piston (100a) for an internal combustion engine constitutes a portion of a combustion chamber (9) of an internal combustion engine (200) and includes a substrate (103), a first film (101) provided on a section of the top surface of the substrate (103) contacting the combustion chamber (9), and a second film (102) provided on another section of the top surface. The piston for the internal combustion engine is characterized in that: the first film (101) has a lower heat conductivity and heat capacity than the substrate (103), and the second film (102) has a lower heat conductivity than the substrate (103) and a higher heat capacity than the first film (101).
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公开(公告)号：US20190211763A1
公开(公告)日：2019-07-11
申请号：US16328866
申请日：2017-08-02
CPC分类号： F02D41/06 , F02B2075/125 , F02D41/32 , F02D41/34 , F02D45/00
摘要： Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine.In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.
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公开(公告)号：US20190107041A1
公开(公告)日：2019-04-11
申请号：US16096071
申请日：2017-03-22
发明人： Yoshihiro SUKEGAWA , Yuusuke KIHARA
摘要： Stratified air-fuel mixture is stably formed around an ignition plug during a stratified charge combustion operation. For this reason, to solve the above problem, the present invention provides an internal combustion engine control device for controlling an internal combustion engine. The internal combustion engine includes: a fluid injection valve provided along an axial direction of an ignition plug; and a fuel injection valve formed separately from the fluid injection valve and provided in a direction intersecting with the axial direction of the fluid injection valve, and the internal combustion engine control device includes a control unit which controls the fluid injection valve and the fuel injection valve so as to inject fluid from the fuel injection valve after injecting fluid from the fluid injection valve in a compression stroke.
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公开(公告)号：US20180291833A1
公开(公告)日：2018-10-11
申请号：US15531490
申请日：2015-11-25
CPC分类号： F02D41/401 , F02D13/0203 , F02D13/0265 , F02D41/04 , F02D41/064 , F02D41/20 , F02D41/34 , F02D41/36 , F02D45/00 , F02D2041/001 , F02D2041/2055 , F02D2041/389 , F02D2200/0608 , F02M53/06 , F02P5/1502 , F02P5/152 , Y02T10/18 , Y02T10/44 , Y02T10/46
摘要： The purpose of the present invention is to provide a control device for an internal combustion engine with which it is possible to favorably control an engine even if there could occur a difference in temperatures of fuel injected into respective cylinders. The present invention is a control device for an internal combustion engine, for controlling an internal combustion engine provided with fuel injection valves for directly injecting fuel respectively to a plurality of cylinders, wherein: the control device is provided with a fuel temperature acquiring means for acquiring respective temperatures of fuel injected to each of the cylinders; and at least one of a fuel injection valve control amount, ignition control amount, and intake and exhaust valve control amount of each of the cylinders is set in accordance with the respective temperatures of fuel acquired by the fuel temperature acquiring means. Alternatively, the present invention is a control device for an internal combustion engine, for controlling an internal combustion engine provided with fuel injection valves for directly injecting fuel respectively to a plurality of cylinders, wherein the control device is provided with a valve-closing time detecting means for detecting a valve-closing time of a valve body of each of the fuel injection valves, and a fuel temperature estimating means for estimating the temperature of fuel on the basis of the valve-closing duration of the valves detected by the valve-closing time detecting means.
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