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1. 发明专利

JP2010048212A Direct injection type gasoline engine 审中-公开
标题翻译：直喷式汽油发动机
公开(公告)号：JP2010048212A
公开(公告)日：2010-03-04
申请号：JP2008214785
申请日：2008-08-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI JUNICHI , MATOHARA SHINYA
IPC分类号： F02B23/10 , F02B23/08 , F02D41/02 , F02D41/04 , F02D41/06 , F02F3/26 , F02M61/14
CPC分类号： Y02T10/125
摘要： PROBLEM TO BE SOLVED: To provide a high-output direct injection type engine capable of improving fuel economy, and capable of activating a catalyst early by reducing HC.
SOLUTION: A piston capable of keeping a tumble flow from an intake port is provided with a projection in a position nearly under an ignition plug. Spray from a multi-hole injector is directed to the projection part along the piston. When starting, injection is performed, dividing into an intake stroke and a compression stroke, and heavy air-fuel mixture is generated near the plug to improve ignition performance and combustion stability. In an ignition retard, the exhaust temperature is raised to activate catalyst early to reduce emission.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供能够提高燃料经济性并且能够通过降低HC而使催化剂早期活化的高输出直喷式发动机。解决方案：能够保持来自进气口的滚筒流动的活塞在几乎在火花塞下方的位置处设置有突起。从多孔喷射器的喷射被引导到沿活塞的突出部分。当起动时，进行喷射，分为进气冲程和压缩冲程，并且在塞附近产生重的空气 - 燃料混合物，以提高点火性能和燃烧稳定性。在点火延迟中，排气温度升高以提前催化催化剂以减少排放。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2010025091A Control device of cylinder injection type internal combustion engine 审中-公开
标题翻译：气缸喷射式内燃机的控制装置
公开(公告)号：JP2010025091A
公开(公告)日：2010-02-04
申请号：JP2008191189
申请日：2008-07-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATOGI KOZO , MATOHARA SHINYA , KANETOSHI KAZUHIKO , ICHIHARA TAKANOBU
IPC分类号： F02D41/14 , F02D41/02 , F02D41/22 , F02D41/34 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To correct an injection quantity characteristic of a fuel injection valve on an onboard basis so as to be capable of coping even with an individual difference and a secular change in the fuel injection valve.
SOLUTION: When an engine operation state satisfies a predetermined condition and the detecting air-fuel ratio is converged in the target air-fuel ratio, a fuel injection quantity arithmetically operated based on the engine operation state is equally divided, and an air-fuel ratio correction quantity provided by air-fuel ratio feedback control is also equally divided similarly to the fuel injection quantity, and divided injection is performed for successively supplying a divided driving pulse having a pulse width corresponding to an equally divided fuel injection quantity of adding the equally divided air-fuel ratio correction quantity to the equally divided fuel injection quantity to the fuel injection valve, and a deviation quantity ΔU50 from an ideal characteristic line of the fuel injection quantity on an equally divided driving pulse width, is determined based on the divided air-fuel ratio correction quantity provided until the detecting air-fuel ratio is converged in the target air-fuel ratio by the divided injection, and this deviation quantity ΔU50 is learnt.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了在燃料喷射阀的个体差异和长期变化的情况下，能够基于车载来校正燃料喷射阀的喷射量特性。解决方案：当发动机运转状态满足预定条件并且检测空燃比被收敛于目标空燃比时，基于发动机运转状态计算运算的燃料喷射量被等分，空气通过空燃比反馈控制提供的燃料比校正量也与燃料喷射量类似地分配，并且执行分割喷射以连续地提供具有对应于等分的燃料喷射量的相加的脉冲宽度的分频驱动脉冲基于等分的驱动脉冲宽度，对燃料喷射阀的等分燃料喷射量的等分空燃比校正量以及与燃料喷射量的理想特性线的偏差量ΔU50，基于分配空燃比校正量，直到检测空燃比收敛在容积中 t分配喷射的空燃比，并且学习该偏差量ΔU50。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2009167878A Gasoline engine 审中-公开
标题翻译：汽油发动机
公开(公告)号：JP2009167878A
公开(公告)日：2009-07-30
申请号：JP2008006007
申请日：2008-01-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI JUNICHI , MATOHARA SHINYA , INOUE MASAHIKO
IPC分类号： F02D41/34 , F02B17/00 , F02B23/10
CPC分类号： F02B17/00 , F02B23/101 , F02B23/104 , F02D41/3029 , F02D41/3094 , F02M69/046 , Y02T10/125
摘要： PROBLEM TO BE SOLVED: To provide a gasoline engine improved in output by effectively utilizing two injectors and enhancing uniformity of air-fuel mixture in high loading, and stably operated even when stratified charge combustion or weak stratified charge combustion is carried out. SOLUTION: One cylinder is equipped with a first injector 122a and a first injector 122b. A fuel is directly injected in the cylinder by these injectors. An ECU 201 performs the fuel injection in one combustion cycle using either one or both of two injectors according to the operating condition. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过有效地利用两个喷射器并提高高负荷的空气 - 燃料混合物的均匀性来提供改善输出的汽油发动机，并且即使进行分层充气燃烧或弱分层充气燃烧也能稳定运行。解决方案：一个气缸装备有第一喷射器122a和第一喷射器122b。燃料通过这些喷射器直接喷射到气缸中。 ECU201根据操作条件，使用两个喷射器中的一个或两个，在一个燃烧循环中进行燃料喷射。版权所有（C）2009，JPO＆INPIT

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