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公开(公告)号：DE102012206305A1
公开(公告)日：2012-10-18
申请号：DE102012206305
申请日：2012-04-17
Applicant: DENSO CORP , NIPPON SOKEN
Inventor： MOTOO KOHEI , SASAKI SATORU , KURONITA TOKUJI , ITO MASAHARU
Abstract: Eine ECU 16 weist ein AGR-Ventil 15 dazu an, einen AGR-Durchlass 42 während des Einlasstakts einer Kraftmaschine zu öffnen/zu schließen. Dies erzeugt eine Schicht 61 hoher AGR-Konzentration und eine Schicht 62 niedriger AGR-Konzentration und führt diese bei unterschiedlichen Zeitgebungen zu einer Brennkammer 27 zu. Als ein Ergebnis wird dadurch ein Schichtungswachstum dieser Schichten 61 und 62 in der Brennkammer 27 gefördert. Eine Kontaktfläche zwischen den Schichten 61 und 62, die jeweils entlang der Achsrichtung der Brennkammer 27 gewachsen sind, wird im Wesentlichen gleich zu einer Querschnittsfläche, die senkrecht zu der Achsrichtung der Brennkammer 27 verläuft. Dies startet die Kraftstoffverbrennung zuerst an der Schicht 61 mit hoher AGR-Konzentration und verringert eine Verbrennungstemperatur des Kraftstoffs. Dadurch wird die Verbrennungstemperatur des Kraftstoffs verringert und die Zeitgebung zum Starten der Zündung in der Brennkammer 27 verzögert und damit werden eine Menge von NOx und Partikelstoffen sowie die Geräuschbildung reduziert.
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42.发明专利
公开(公告)号：DE102010043237A1
公开(公告)日：2011-06-09
申请号：DE102010043237
申请日：2010-11-02
Applicant: DENSO CORP
Inventor： MORIMOTO YOUHEI , ISHIZUKA KOJI , TAKASHIMA YOSHIMITSU , HIGUCHI KAZUHIRO , IKEDA SUMITAKA , NISHIMURA MITSUHIRO , ASANO MASAHIRO , SASAKI SATORU
IPC: F02D41/24
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公开(公告)号：DE102010043233A1
公开(公告)日：2011-05-05
申请号：DE102010043233
申请日：2010-11-02
Applicant: DENSO CORP
Inventor： TAKASHIMA YOSHIMITSU , ISHIZUKA KOJI , MORIMOTO YOUHEI , NISHIMURA MITSUHIRO , ASANO MASAHIRO , IKEDA SUMITAKA , HIGUCHI KAZUHIRO , SASAKI SATORU
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公开(公告)号：DE102008000069A1
公开(公告)日：2008-08-14
申请号：DE102008000069
申请日：2008-01-16
Applicant: DENSO CORP
Inventor： KURONITA TOKUJI , SASAKI SATORU
Abstract: An apparatus is provided to control injection of fuel into an engine with a combustion engine. The fuel is injected into the combustion chamber as a preliminary sub injection and a main injection following the preliminary sub injection. The preliminary sub injection repeats one or more times and is less in an amount of the fuel than the main injection. The apparatus comprises acquisition means and a control unit. The acquisition means acquires a parameter showing at least one of a state of an exhaust gas exhausted from the cylinder after the combustion of the fuel and a constituent of the exhaust gas. The control unit includes variably setting means for variably setting a mode of the preliminary sub injection depending on the parameter acquired by the acquisition means.
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公开(公告)号：FR2861808B1
公开(公告)日：2007-11-16
申请号：FR0411718
申请日：2004-11-03
Applicant: DENSO CORP
Inventor： SASAKI SATORU , KUBOSHIMA TSUKASA , NAKAMURA KANEHITO , KINUGAWA MASUMI , KARIYA YASUHIRO , KURONITA TOKUJI
IPC: F02B23/06 , F02D43/00 , F02D1/00 , F02D21/08 , F02D35/02 , F02D41/00 , F02D41/04 , F02D41/38 , F02M25/07 , F02M49/00 , F02M61/18
Abstract: A compression ignition engine injects fuel through injection holes of an injector at a substantially constant injection rate to atomize the fuel so that the fuel can be easily vaporized and to make the fuel penetrate an atmosphere inside a cylinder. A spatial distribution of the injected fuel in which mixing of the fuel and air is promoted as the fuel recedes from the injection hole and the fuel reaches a premixing space where the fuel is premixed with the air is provided. The engine controls oxygen concentration inside the cylinder and an ignition delay so that a ratio of a quantity of the fuel injected before a start of ignition to a total fuel injection quantity falls within a range from 25% to 50% and so that the premixed gas formed in the premixing space is combusted serially.
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Patent Agency Ranking
公开(公告)号：DE60014813T2
公开(公告)日：2006-03-09
申请号：DE60014813
申请日：2000-08-30
Applicant: DENSO CORP
Inventor： KATO MASAAKI , SASAKI SATORU
Abstract: A fuel injection device (1) is composed of a valve member (21 to 25) to open and close an injection hole (12b), a high pressure passage (50 to 53) for generating a basic pressure force to urge the valve member in a direction of opening the injection hole, an electromagnetic valve (30), first and second springs (15,16) for generating biasing forces to urge the valve member in a direction of closing the injection hole, and first and second control chambers (60,65) disposed in the fuel passages. The respective control chambers are communicated with the high pressure passage when the electromagnetic valve is not actuated and respective fuel pressure in the first and second control chambers urge the valve member in a direction of closing the injection hole, and the respective control chambers are communicated one after another at different timings to a low pressure conduit to reduce fuel pressure therein when the electromagnetic valve is actuated. With the device mentioned above, the valve member may be stepwise lifted to achieve variable fuel injection rate by controlling the control chambers in order to change a force balance with the basic pressure force and the biasing force.
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公开(公告)号：JP2013024197A
公开(公告)日：2013-02-04
申请号：JP2011162065
申请日：2011-07-25
Applicant: Nippon Soken Inc , 株式会社日本自動車部品総合研究所 , Denso Corp , 株式会社デンソー
Inventor： WATANABE HIROKI , ITO MASAHARU , SASAKI SATORU
CPC classification number: F02D41/402 , F02D41/3845 , F02D2041/3881 , F02D2200/0602 , F02M55/02 , F02M55/025 , F02M63/029 , Y02T10/44
Abstract: PROBLEM TO BE SOLVED: To provide a fuel injection control device of an internal combustion engine achieving compatibility between a reduction in noises and NOx and a reduction in PM contained in discharge air.SOLUTION: The pressure of a fuel supplied to an injector 12 in pilot injection is set to be lower than the pressure of the fuel supplied to the injector 12 in main injection. Thus, the fuel jetted from the injector 12 in the pilot injection generates a thick mixture around the injector 12. Therefore, the ignitability of the fuel is improved even with a small amount of the pilot injection. On the other hand, in the main injection and after injection, the injector 12 jets the fuel at a pressure higher than that in the pilot injection. Therefore, the atomized fuel is supplied to a combustion chamber 18 that becomes high in pressure by the combustion of the fuel, and the combustion of the fuel is uniformized. Thus, the reduction in the noises and NOx and the reduction in the PM contained in the discharge air in the main injection and the after injection are achieved.
Abstract translation: 要解决的问题：提供一种内燃机的燃料喷射控制装置，其实现噪声降低和NOx之间的兼容性以及排放空气中所含的PM的减少。 解决方案：在先导喷射中供给到喷射器12的燃料的压力被设定为低于在主喷射中供给到喷射器12的燃料的压力。 因此，在引燃喷射器中从喷射器12喷射的燃料在喷射器12周围产生浓稠的混合物。因此，即使少量的引燃喷射，燃料的点火性也提高。 另一方面，在主喷射和喷射之后，喷射器12以高于先导喷射的压力喷射燃料。 因此，通过燃料的燃烧将雾化的燃料供给到变成高压的燃烧室18，燃料的燃烧均匀化。 因此，实现主喷射和后喷射中的排出空气中所含的噪声和NOx的降低以及PM的减少。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2012145042A
公开(公告)日：2012-08-02
申请号：JP2011004120
申请日：2011-01-12
Applicant: Denso Corp , 株式会社デンソー
Inventor： HOSHI MASAYA , SASAKI SATORU
CPC classification number: F02D41/405 , F02D35/023 , F02D35/026 , Y02T10/44
Abstract: PROBLEM TO BE SOLVED: To provide a fuel injection control device for reducing smoke during emission, independently of operating conditions.SOLUTION: The fuel injection control device acquires a target value of a combustion parameter as a ratio of a cylinder oxygen amount to an after-injection amount at an ignition timing for after-injection (S402). The fuel injection control device calculates the ignition timing for the after-injection and a heat generation amount from a heat generation rate (S412, S414), and calculates a value (X_now) of an actual combustion parameter in the current combustion cycle from the cylinder oxygen amount and the after-injection amount calculated from a cylinder oxygen concentration at the ignition timing of the after-injection (S420). When a difference ΔX between a target value (X_target) of the combustion parameter and the actual value (X_now) of the combustion parameter is a predetermined threshold value or greater (S424:No), the fuel injection control device sets an after-injection amount and a main injection amount in the next combustion cycle for zeroing the difference ΔX to reduce smoke (S426, S428).
Abstract translation: 要解决的问题：提供一种用于在发射期间减少烟雾的燃料喷射控制装置，而与操作条件无关。 解决方案：燃料喷射控制装置获取燃烧参数的目标值，作为后喷射点燃正时时的气缸氧量与后喷射量之比（S402）。 燃料喷射控制装置根据发热量计算后续喷射的点火正时和发热量（S412，S414），并计算当前燃烧循环中的实际燃烧参数的值（X_now） 氧量和后喷射量的后喷射量（S420）的汽油氧浓度计算出来（S420）。 当燃烧参数的目标值（X_target）与燃烧参数的实际值（X_now）之间的差ΔX为预定阈值或更大时（S424：否），燃料喷射控制装置设定后喷射量 以及下一个燃烧循环中的主喷射量，用于使差ΔX归零以减少烟雾（S426，S428）。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2011094586A
公开(公告)日：2011-05-12
申请号：JP2009251864
申请日：2009-11-02
Applicant: Denso Corp , 株式会社デンソー
Inventor： MORIMOTO YOHEI , ISHIZUKA KOJI , TAKASHIMA YOSHIMITSU , HIGUCHI KAZUHIRO , IKEDA SUMITAKA , NISHIMURA MITSUHIRO , ASANO MASAHIRO , SASAKI SATORU
IPC: F02D45/00
CPC classification number: F02D41/1401 , F02D2041/1434 , F02D2041/2048
Abstract: PROBLEM TO BE SOLVED: To provide an engine control apparatus, reducing burdens of conformance test work and map preparation work, avoiding degradation in controllability caused by mutual interference, and making engine output values get closer to request values even when controlled variables are restricted not to exceed a range of use.
SOLUTION: Correlation between a plurality of sorts of combustion parameters and a plurality of sorts of controlled variables is defined by a controlled variables arithmetic expression 32 to calculate combinations of command values of the plurality of sorts of controlled variables with respect to target values of the plurality of sorts of combustion parameters by the controlled variables arithmetic expression 32, so that the burden of conformance test work is reduced. Even if the command value of the controlled variables calculated by using the controlled variables arithmetic expression 32 is restricted to be an upper limit value or a lower limit value because the instruction value exceeds the range of use, other controlled variables not restricted are feedback-corrected to make the plurality of sorts of combustion parameters get closer to the target values, so that the engine output values are controlled to get closer to the request values.
COPYRIGHT: (C)2011,JPO&INPITAbstract translation: 要解决的问题：为了提供一种发动机控制装置，减少一致性测试工作和地图准备工作的负担，避免相互干扰导致的可控性的降低，并且即使控制变量是引擎输出值也接近请求值 限制不超过使用范围。 解决方案：通过受控变量算术表达式32来定义多种燃烧参数和多种控制变量之间的相关性，以计算多种控制变量相对于目标值的命令值的组合 通过受控变量算术表达式32的多种燃烧参数，使得一致性测试工作的负担降低。 即使由于指示值超过使用范围而使用受控变量算术表达式32计算出的受控变量的指令值被限制为上限值或下限值，所以其他被限制的受控变量被反馈校正 以使多种燃烧参数变得更接近目标值，从而控制发动机输出值以更接近于请求值。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2009144528A
公开(公告)日：2009-07-02
申请号：JP2007319699
申请日：2007-12-11
Applicant: Denso Corp , 株式会社デンソー
Inventor： KURONITA TOKUSHI , SASAKI SATORU
IPC: F02D45/00
CPC classification number: G01N33/2829
Abstract: PROBLEM TO BE SOLVED: To provide a fuel property detecting apparatus and a fuel property detecting method capable of improving the accuracy in detecting a cetane number of used fuel.
SOLUTION: In cetane number detection processing, when all of an operation index, an environment index and an intake index are satisfied (S140: YES), a pre-injection is performed with an initial setting quantity Qpf used as an injection quantity Qp and if a factor of non-generation exists, correction coefficient calculation processing is performed (S190). In the correction coefficient calculation processing, a temperature correction coefficient is acquired according to the factor of non-generation. When a factor of non-generation does not exist (or is eliminated), the injection quantity Qp is increased by a variation ΔQp (S180), torque sensitivity is derived according to a generated torque value acquired by a pre-injection at the increased injection quantity Qp and an increment of the injection quantity Qp at the pre-injection (S210), an estimated cetane number can is detected based on the derived torque sensitivity (S220) and then a cetane number with the estimated cetane number corrected is derived (S230).
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：提供一种能够提高检测用过的燃料的十六烷值的精度的燃料特性检测装置和燃料特性检测方法。 解决方案：在十六烷值检测处理中，当满足操作指数，环境指标和摄入指标全部（S140：是）时，以初始设定量Qpf作为喷射量进行预喷射 Qp，如果存在非代数因子，则执行校正系数计算处理（S190）。 在校正系数计算处理中，根据非生成因子获取温度校正系数。 当不存在（或消除）不产生的因素时，喷射量Qp增加变化ΔQp（S180），根据在增加的喷射中通过预喷射获得的产生的扭矩值导出转矩灵敏度 数量Qp和预喷射时的喷射量Qp的增量（S210），基于导出的转矩灵敏度来检测估计的十六烷值罐（S220），然后导出校正了估计的十六烷值的十六烷值（S230 ）。 版权所有（C）2009，JPO＆INPIT
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