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11. 发明专利

JP2012241640A Fuel injection control device 有权
标题翻译：燃油喷射控制装置
公开(公告)号：JP2012241640A
公开(公告)日：2012-12-10
申请号：JP2011113437
申请日：2011-05-20
申请人： 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
发明人： TODA NAOKI , ITO MASAHARU , MASUDA MAKOTO
IPC分类号： F02D41/38 , F02D35/00 , F02D41/40 , F02D45/00
CPC分类号： Y02T10/44
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of reducing a discharge amount of emission.SOLUTION: The fuel injection control device driving and controlling a fuel injection valve performing pilot injection prior to main injection into a cylinder of a diesel engine, includes a combustion position detecting means and an injection control means. The combustion position detecting means detects a combustion position of pilot spray (S4). The injection control means controls injection timing of the pilot injection so that the combustion position of the pilot spray comes to an appropriate position (S6) when the combustion position of the pilot spray is not at the appropriate position high in combustion efficiency of main spray (S5:NO). Thus, a fire source made by the pilot spray is ignited in a condition in which the main spray and air are mixed adequately.
摘要翻译：要解决的问题：提供能够减少排放量的燃料喷射控制装置。解决方案：燃料喷射控制装置驱动和控制在主喷射到柴油发动机的气缸之前执行先导喷射的燃料喷射阀包括燃烧位置检测装置和喷射控制装置。燃烧位置检测装置检测先导喷射的燃烧位置（S4）。喷射控制装置控制先导喷射的喷射正时，使得先导喷雾的燃烧位置不在主喷雾的燃烧效率高的适当位置时，先导喷雾的燃烧位置达到适当的位置（S6） S5：NO）。因此，在主喷雾和空气充分混合的条件下，由先导喷雾器制成的火源点燃。版权所有（C）2013，JPO＆INPIT

12. 发明专利

JP2012041839A Fuel injection device 审中-公开
标题翻译：燃油喷射装置
公开(公告)号：JP2012041839A
公开(公告)日：2012-03-01
申请号：JP2010182276
申请日：2010-08-17
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： TODA NAOKI , ITO MASAHARU , MASUDA MAKOTO
IPC分类号： F02M47/00 , F02M47/02 , F02M61/10
摘要： PROBLEM TO BE SOLVED: To achieve an injection characteristic in a single fuel supply system in which a low-pressure injection is performed at a pilot injection and a high-pressure injection is performed at a main injection.SOLUTION: At a low lift range of nozzle needle 43, since an opening area between a seat part 431 and a valve seat 411 is small, a pressure of a suck part 414 is significantly lower than a fuel pressure of a common rail 3, so that a practical injection pressure is lower. Consequently, a communicating path 441 for communicating a fuel accumulating chamber 413 with a control chamber 46 is provided so that an opening area of the communicating path 441 becomes smaller accompanying movement of the nozzle needle 43 to a valve opening direction. Thereby, at the low lift range (a range before the penetrating hole 441 is fully closed), since a high pressure fuel is supplied from both of a high pressure supply path 415 and the penetrating hole 441 to the control chamber 46, a moving speed of the nozzle needle 43 becomes slower and a time period within the low lift range becomes longer than the conventional configuration. Then, an injection time period within the low lift range is utilized as a pilot injection time period.
摘要翻译：要解决的问题：在主喷射下执行低压喷射并且在主喷射下执行高压喷射的单燃料供给系统中实现喷射特性。解决方案：在喷嘴针43的较低升程范围内，由于座部431和阀座411之间的开口面积小，所以吸入部414的压力明显低于共轨的燃料压力 3，使得实际的注射压力较低。因此，设置有用于使燃料积存室413与控制室46连通的连通路径441，使得随着喷嘴针43向阀打开方向的移动而使连通路441的开口面积变小。因此，在低升程范围（贯通孔441全闭之前的范围）中，由于从高压供给路径415和贯通孔441向控制室46供给高压燃料，因此，喷嘴针43的速度变慢，并且在低提升范围内的时间段变得比常规结构长。然后，利用低升程范围内的喷射时间段作为引燃喷射时间。版权所有（C）2012，JPO＆INPIT

13. 发明专利

JP2011001831A Fuel reaching distance estimating device and fuel injection control device 有权
标题翻译：燃油接收距离估算装置和燃油喷射控制装置
公开(公告)号：JP2011001831A
公开(公告)日：2011-01-06
申请号：JP2009143349
申请日：2009-06-16
申请人： Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社日本自動車部品総合研究所
发明人： YAMASHITA YUTO , TODA NAOKI , ITO HIROKAZU
IPC分类号： F02D41/38 , F02M51/00
摘要： PROBLEM TO BE SOLVED: To control fuel injection by estimating a reaching distance of a liquid-phase part of fuel while suppressing an excess calculation load.SOLUTION: In this device, a density and temperature in a cylinder of an internal combustion engine are detected as an cylinder inside condition, and injection speeds from a fuel injection valve from a fuel injection start at predetermined time intervals are estimated. Depending on the cylinder inside condition and injection speed, an evaporation life, which is a time until the fuel completely evaporates in the cylinder, is estimated. Depending on the estimated injection speed and evaporation life, a liquid-phase reaching position where the liquid-phase part of the fuel reaches is estimated on each time. In addition, a maximum liquid-phase reaching position as a maximum value is detected out of the estimated reaching positions of the liquid-phase part, and it is determined whether the maximum liquid-phase reaching position is a distance reaching an inner wall surface of the cylinder. When it is determined that the maximum liquid-phase reaching position is the position reaching the inner wall surface of the cylinder, the fuel injection speed is corrected and reduced.
摘要翻译：要解决的问题：通过在抑制过量的计算负荷的同时估计燃料的液相部分的到达距离来控制燃料喷射。解决方案：在该装置中，内燃机的气缸中的密度和温度被检测为汽缸内部条件，并且估计来自燃料喷射阀的从预定时间间隔的燃料喷射开始的喷射速度。根据气缸内部条件和喷射速度，估计蒸发寿命，直到燃料在气缸中完全蒸发的时间。根据估计的喷射速度和蒸发寿命，每次估计燃料到达的液相部分的液相到达位置。此外，从液相部分的估计到达位置中检测出最大液相到达位置为最大值，并且确定最大液相到达位置是否到达达到内壁表面的距离气瓶。当确定最大液相到达位置是到达气缸的内壁表面的位置时，燃料喷射速度被校正和减小。

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