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    • 5. 发明申请
    • FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 内燃机燃油供应装置
    • US20140163843A1
    • 2014-06-12
    • US14233543
    • 2011-09-02
    • Susumu Kojima
    • Susumu Kojima
    • F02D41/30
    • F02D41/3094F02D41/20F02D41/22F02D2041/2089F02M65/00F02M2200/21
    • A drive circuit (52) that is commonly provided with respect to two fuel injection valves (24R and 24L) for the same cylinder, and drive the two fuel injection valves (24R and 24L) for the same cylinder on the basis of a command from an ECU (40), is provided. An electric conduction line (52) that electric current supplied to the two fuel injection valves (24R and 24L) flows through, is provided. The electric conduction line (52) includes a common section (56a) one end of which is connected to the drive circuit (52), and branch sections (56b) which are sections following the other end of the common section (56a) that the electric conduction line (56) branches off at and on which the two fuel injection valves (24R and 24L) for the same cylinder are respectively installed. The electric current value I flowing through the common section (56a) is detected. An electric resistance (58) that is inserted in the branch section (56b) for the fuel injection valve (24L), is provided. A fuel injection valve, at which an occurrence of abnormality concerning electric conduction is recognized, out of the two fuel injection valves (24R and 24L) for the same cylinder, is detected on the basis of the magnitude of the electric current value I.
    • 驱动电路(52),其相对于同一气缸的两个燃料喷射阀(24R和24L)共同提供,并且基于来自相同气缸的命令驱动相同气缸的两个燃料喷射阀(24R和24L) 提供ECU(40)。 设置供给两个燃料喷射阀(24R,24L)的电流流过的导电线(52)。 导电线(52)包括其一端连接到驱动电路(52)的公共部分(56a)和与公共部分(56a)的另一端之后的部分的分支部分(56b) 导线(56)在其上分别安装相同气缸的两个燃料喷射阀(24R和24L)。 检测流过公共部分(56a)的电流值I。 设置插入燃料喷射阀(24L)的分支部(56b)的电阻(58)。 基于电流值I的大小来检测从相同气缸的两个燃料喷射阀(24R和24L)中识别到关于导电异常的发生的燃料喷射阀。
    • 6. 发明申请
    • FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
    • 内燃机燃油喷射控制系统
    • US20140123955A1
    • 2014-05-08
    • US14129194
    • 2011-07-01
    • Susumu Kojima
    • Susumu Kojima
    • F02D41/30
    • F02D41/30F02D41/3845F02D41/3854F02D2041/1409F02D2200/0602F02M37/0041F02M37/0047F02M59/366
    • A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery pressure of a low pressure fuel pump is caused to decrease when an amount of change per unit time of an integral term shows a decreasing tendency or zero, whereas the delivery pressure of the low pressure fuel pump is caused to increase when the amount of change per unit time of the integral term shows an increasing tendency. In cases where an increase in the integral term resulting from a change in the target delivery pressure of the high pressure fuel pump has occurred, the increase in the delivery pressure of the low pressure fuel pump is prohibited.
    • 一种用于内燃机的燃料喷射控制系统,其中通过使用基于高压燃料泵的输送压力与其目标压力之间的差异的比例积分控制来计算用于高压燃料泵的驱动信号。 当积分项的每单位时间的变化量显示减小趋势或零时,使低压燃料泵的输送压力降低,而当低压燃料泵的输送压力 积分项的每单位时间的变化显示出增加的趋势。 在发生高压燃料泵的目标输送压力的变化引起的积分项的增加的情况下,禁止低压燃料泵的输送压力的增加。
    • 7. 发明申请
    • FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
    • 内燃机燃油喷射控制系统
    • US20130138327A1
    • 2013-05-30
    • US13814759
    • 2010-10-27
    • Susumu Kojima
    • Susumu Kojima
    • F02D41/30
    • F02D41/3005F02D41/3845F02D41/3854F02D2041/1409F02D2200/0602F02D2250/02F02M59/366
    • An object of the invention is to provide a technology that enables to make the feed pressure as low as possible without inviting a misfire or a deviation of the air-fuel ratio, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. According to the invention, to achieve the object, in a fuel injection control system for an internal combustion engine in which fuel discharged from a low pressure fuel pump is supplied to a fuel injection valve with its pressure boosted by a high pressure fuel pump, while a lowering process of lowering feed pressure or the discharge pressure of a the low pressure fuel pump, the lowering process is suspended and restarted with reference to the tendency of change in an integral term used in a proportional-integral control of the duty cycle of the high pressure fuel pump.
    • 本发明的目的是提供一种技术,其能够在配备有低温的内燃机的燃料喷射控制系统中使得进料压力尽可能低而不引起空燃比的失火或偏差 高压燃油泵和高压燃油泵。 根据本发明,为了达到上述目的,在内燃机的燃料喷射控制装置中,由低压燃料泵排出的燃料以高压燃料泵升压的方式供给燃料喷射阀,同时 降低低压燃料泵的进料压力或排出压力的降低过程,参照在比例积分控制中使用的积分项的变化趋势来暂停并重启降低过程 高压燃油泵。