公开(公告)号：US07522987B2

公开(公告)日：2009-04-21

申请号：US11826686

申请日：2007-07-17

Applicant: Hiroto Fujii

Inventor： Hiroto Fujii

IPC: G06F19/00 ,  F02M51/00

CPC classification number: F02D41/402 ,  F02D41/1497 ,  F02D41/2096 ,  F02D41/2438 ,  F02D41/2467 ,  F02D41/247 ,  F02D41/3836 ,  F02D2200/0602 ,  F02M47/027 ,  Y02T10/44

Abstract: An apparatus aims at learning a deviation from a reference injection characteristic of a fuel injector provided for a cylinder of an engine having an output shaft. In the apparatus, a detecting unit is configured to detect a minimum interval between temporally adjacent fuel injection periods in the plurality of fuel injection periods based on a behavior of the output shaft during execution of the plurality of fuel injections. The minimum interval maintains the temporally adjacent fuel injection periods to be non-overlapped with each other. A learning unit is configured to learn the deviation from the reference injection characteristic of the fuel injector based on the detected minimum interval.

Abstract translation: 一种装置旨在学习与具有输出轴的发动机的气缸设置的燃料喷射器的基准喷射特性的偏差。 在该装置中，检测单元被配置为基于在执行多个燃料喷射期间输出轴的行为来检测多个燃料喷射周期中的时间上相邻的燃料喷射周期之间的最小间隔。 最小间隔保持时间上相邻的燃料喷射周期彼此不重叠。 学习单元被配置为基于检测到的最小间隔来了解与燃料喷射器的基准喷射特性的偏差。

公开(公告)号：US20080105767A1

公开(公告)日：2008-05-08

申请号：US11896935

申请日：2007-09-06

Applicant: Hiroto Fujii ,  Yuusuke Ootani

Inventor： Hiroto Fujii ,  Yuusuke Ootani

IPC: B05B1/32

CPC classification number: F02M61/1846 ,  F02M45/08

Abstract: A fuel injection apparatus includes a nozzle portion, into which fuel flows. The nozzle portion includes at least one nozzle hole. Fuel is injected through the at least one nozzle hole. Each of the at least one nozzle hole includes a nozzle hole outlet region. A cross-sectional area of the nozzle hole outlet region decreases continuously or stepwise in a direction opposite from a fuel flowing direction.

Abstract translation: 燃料喷射装置包括燃料流入的喷嘴部分。 喷嘴部分包括至少一个喷嘴孔。 燃料通过至少一个喷嘴孔注入。 所述至少一个喷嘴孔中的每一个包括喷嘴孔出口区域。 喷嘴孔出口区域的横截面积沿与燃料流动方向相反的方向连续地或逐步地减小。

公开(公告)号：US20080017173A1

公开(公告)日：2008-01-24

申请号：US11826686

申请日：2007-07-17

Applicant: Hiroto Fujii

Inventor： Hiroto Fujii

IPC: F02D41/38

CPC classification number: F02D41/402 ,  F02D41/1497 ,  F02D41/2096 ,  F02D41/2438 ,  F02D41/2467 ,  F02D41/247 ,  F02D41/3836 ,  F02D2200/0602 ,  F02M47/027 ,  Y02T10/44

Abstract: An apparatus aims at learning a deviation from a reference injection characteristic of a fuel injector provided for a cylinder of an engine having an output shaft. In the apparatus, a detecting unit is configured to detect a minimum interval between temporally adjacent fuel injection periods in the plurality of fuel injection periods based on a behavior of the output shaft during execution of the plurality of fuel injections. The minimum interval maintains the temporally adjacent fuel injection periods to be non-overlapped with each other. A learning unit is configured to learn the deviation from the reference injection characteristic of the fuel injector based on the detected minimum interval.

Abstract translation: 一种装置旨在学习与具有输出轴的发动机的气缸设置的燃料喷射器的基准喷射特性的偏差。 在该装置中，检测单元被配置为基于在执行多个燃料喷射期间输出轴的行为来检测多个燃料喷射周期中的时间上相邻的燃料喷射周期之间的最小间隔。 最小间隔保持时间上相邻的燃料喷射周期彼此不重叠。 学习单元被配置为基于检测到的最小间隔来了解与燃料喷射器的基准喷射特性的偏差。

公开(公告)号：US07305971B2

公开(公告)日：2007-12-11

申请号：US11334748

申请日：2006-01-19

Applicant: Hiroto Fujii

Inventor： Hiroto Fujii

IPC: F02M57/02 ,  F02M51/00

CPC classification number: F02D41/3836 ,  F02D41/1498 ,  F02D41/20 ,  F02D2041/2058 ,  F02D2200/0604 ,  F02M47/027 ,  F02M63/0225

Abstract: A common rail fuel injection apparatus for an engine is provided which is equipped with a rail pressure sensor working to measure the pressure of fuel in a common rail, fuel injectors, and a controller. When the operation state of the rail pressure sensor monitored to be unusual, the controller changes the value of electricity supplied to an actuator of one of the fuel injectors to induce a change in a preselected operation characteristic of the engine. Upon appearance of such a change, the controller estimates the value of the rail pressure using the changed value of the electricity and a physical property of balance among forces acting on a valve of one of the fuel injectors which has induced the change in operation characteristic of the engine. The estimated value of the rail pressure is used for subsequent injections of the fuel into the engine.

Abstract translation: 提供一种用于发动机的共轨燃料喷射装置，其配备有用于测量共轨中的燃料压力的轨道压力传感器，燃料喷射器和控制器。 当轨道压力传感器的操作状态被监视为异常时，控制器改变供给到其中一个燃料喷射器的致动器的电力的值，以引起发动机的预选操作特性的改变。 在出现这样的变化时，控制器使用电力的变化值和作用在一个燃料喷射器的阀的力之间的平衡的物理性质估计轨道压力的值，这引起了操作特性的变化 引擎。 轨道压力的估计值用于随后将燃料喷射到发动机中。

公开(公告)号：US07222608B2

公开(公告)日：2007-05-29

申请号：US11216183

申请日：2005-09-01

Applicant: Hiroto Fujii

Inventor： Hiroto Fujii

IPC: F02M37/04

CPC classification number: F02M47/027 ,  F02M45/00

Abstract: An injector has a housing, a command piston, a control chamber, a needle, a nozzle chamber, a fuel inflow passage, a fuel discharge passage and an electric valve. The housing slidably supports the command piston and the needle. The housing and one end face of the command piston enclose the control chamber. The needle is disposed at the other end face side of the command piston. The housing and a leading end portion of the needle enclose the nozzle chamber to accumulate the high-pressure fuel therein. The housing is provided with an injection hole, which is opened and blocked by the needle. The fuel discharge passage opens at a fuel discharge port to the control chamber to discharge the high-pressure fuel out of the control chamber. The fuel discharge port is close to an uppermost position of the command piston.

Abstract translation: 喷射器具有壳体，指令活塞，控制室，针，喷嘴室，燃料流入通道，​​燃料排出通道和电动阀。 外壳可滑动地支撑指挥活塞和针头。 指挥活塞的壳体和一个端面包围控制室。 针位于指令活塞的另一端面。 所述壳体和所述针的前端部包围所述喷嘴室以在其中积蓄高压燃料。 外壳设有一个注射孔，打开和关闭针头。 燃料排出通道在燃料排放口处通向控制室，以将高压燃料排出控制室。 燃料排出口靠近指令活塞的最上部位置。

公开(公告)号：US20060090733A1

公开(公告)日：2006-05-04

申请号：US11262898

申请日：2005-11-01

Applicant: Hiroto Fujii

Inventor： Hiroto Fujii

IPC: F02M57/02

CPC classification number: F02M47/027 ,  F02D41/2438 ,  F02D41/247 ,  F02D41/3809 ,  F02D41/403 ,  F02D2250/04 ,  F02M63/0225

Abstract: A common rail injection system for internal combustion diesel engines is provided which is designed to correct a limit of width of an ineffective injection command pulse signal which is to be applied to each fuel injector, but causes the injector to produce no spray of fuel in order to minimize a variation in quantity of fuel injected to the engine between the injectors arising from the individual variability or aging of the injectors. The system works to changes the width of a pilot injection command pulse signal to search a value thereof when an engine operation variation such as a change in speed of the engine exceeds or decreases below a threshold at which the injector may be viewed as having sprayed the fuel actually or stopped spraying the fuel actually and determines the limit of width of the ineffective injection command pulse signal using the searched value.