公开(公告)号：US20100122690A1

公开(公告)日：2010-05-20

申请号：US12617327

申请日：2009-11-12

申请人： Takao MIYAKE ,  Masahiro Toyohara ,  Tomohiro Ohisa ,  Yoshikazu Ishii

发明人： Takao MIYAKE ,  Masahiro Toyohara ,  Tomohiro Ohisa ,  Yoshikazu Ishii

IPC分类号： F02M69/54 ,  F02D41/30

CPC分类号： F02D41/3836 ,  F02D41/221 ,  F02D41/3854 ,  F02D41/3863 ,  F02D2200/0602 ,  F02D2250/31

摘要： In a control apparatus for an internal combustion engine, when a fuel pressure detected by the fuel pressure detecting unit is not smaller than a threshold P_a, the value opening time duration of a injector is increased to a value larger than its normal value, such control as to stop fuel injection from the injector is inhibited, the low pressure fuel pump is stopped, thus quickly lowering the fuel pressure. After the fuel pressure is lowered, the valve opening time duration of the injector is returned to the normal value, and a discharge quantity of the low pressure fuel pump is changed on the basis of a difference between the fuel pressure detected by the fuel pressure detecting unit and a target fuel pressure.

摘要翻译： 在用于内燃机的控制装置中，当由燃料压力检测单元检测到的燃料压力不小于阈值P_a时，喷射器的开启持续时间增加到大于其正常值的值，这样的控制 为了停止来自喷射器的燃料喷射被抑制，低压燃料泵停止，从而迅速降低燃料压力。 在燃料压力降低之后，喷射器的开阀持续时间恢复到正常值，并且基于由燃料压力检测检测到的燃料压力之间的差异来改变低压燃料泵的排出量 单位和目标燃油压力。

公开(公告)号：US20100263632A1

公开(公告)日：2010-10-21

申请号：US12763732

申请日：2010-04-20

申请人： Takao MIYAKE ,  Masahiro Toyohara ,  Yasunaga Hamada

发明人： Takao MIYAKE ,  Masahiro Toyohara ,  Yasunaga Hamada

IPC分类号： F02M51/00 ,  F02D41/00

CPC分类号： F02D41/20 ,  F02D2041/1431 ,  F02D2041/2044 ,  F02D2041/2055 ,  F02D2041/2058

摘要： Even when a current waveform and a current value of a current which is supplied to an injector is changed in order to extend a dynamic range of the injector, fuel injection quantity precision is maintained and enhanced. A correction time for correcting an opening/closing delay of the aforementioned injector is variably set by a valve response delay time calculating unit 103 and a selector unit 106 in accordance with change of setting of the current waveform and the current value.

摘要翻译： 即使为了延长喷射器的动态范围而改变提供给喷射器的电流的电流波形和电流值，也能够维持并提高燃料喷射量的精度。 根据电流波形和当前值的设定的变化，由阀响应延迟时间计算单元103和选择器单元106可变地设置校正上述喷射器的打开/关闭延迟的校正时间。

公开(公告)号：US20090177369A1

公开(公告)日：2009-07-09

申请号：US12339496

申请日：2008-12-19

申请人： Takao MIYAKE ,  Masahiro Toyohara ,  Takuya Mayuzumi ,  Tohru Ishikawa ,  Ryoichi Oura

发明人： Takao MIYAKE ,  Masahiro Toyohara ,  Takuya Mayuzumi ,  Tohru Ishikawa ,  Ryoichi Oura

IPC分类号： F02D41/30 ,  F02M51/00

CPC分类号： F02D41/20 ,  F02D2041/2044 ,  F02D2041/2058

摘要： To provide a fuel injection control apparatus capable of reducing the minimum quantity of fuel injection without reducing the maximum quantity of injection.For fuel injector valve opening, a driving circuit 56 supplies an electric current from a high-voltage power supply VH to the fuel injector 53, then after valve opening, switches the high-voltage power supply VH to a low-voltage power supply LV, and retains the open state of the valve. A microcomputer 57 is adapted such that for opening the valve of the fuel injector, the microcomputer, after supplying the current from the high-voltage power supply to the injector 53, discharges the current rapidly for a decrease below a first current level Ihold1 at which the open state of the valve cannot be retained, and then controls the supply current to the injector 53 so as to supply a current of a second current level Ihold2 at which the open state of the valve can be retained.

摘要翻译： 提供能够在不减少最大喷射量的情况下减少燃料喷射量的最小量的燃料喷射控制装置。 对于燃料喷射阀打开，驱动电路56将电流从高压电源VH供给到燃料喷射器53，然后在阀打开之后，将高压电源VH切换到低压电源LV， 并保持阀的打开状态。 微型计算机57适于打开燃料喷射器的阀，微型计算机在将来自高压电源的电流提供给喷射器53之后，迅速地将电流放电到低于第一电流水平Ihold1， 阀的打开状态不能被保持，然后控制到喷射器53的供应电流，以便提供可以保持阀的打开状态的第二电流水平Ihold2的电流。