公开(公告)号：US06237567B1

公开(公告)日：2001-05-29

申请号：US09249771

申请日：1999-02-16

申请人： Futoshi Nakano ,  Suzuhiro Saiki ,  Tadashi Uchiyama

发明人： Futoshi Nakano ,  Suzuhiro Saiki ,  Tadashi Uchiyama

IPC分类号： F02M3304

CPC分类号： F02D41/008 ,  F02D41/2412 ,  F02D41/2416 ,  F02D41/2432 ,  F02D41/2467 ,  F02D41/3809 ,  F02M57/025

摘要： A fuel-injection system for an engine is disclosed in which a standard conductive duration of the individual injectors required for a desired volume of fuel injected per cycle may be easily provided by correcting a standard conductive duration to a solenoid-operated valve, which has been found depending on a standard fuel-injection characteristic. A controller unit is stored with a standard fuel-injection characteristic A that is used for obtaining a standard actuating pulse width Pws for the standard conductive duration corresponding to a desired volume Qf of the injected fuel, which is required depending on the operating conditions of the engine. A specified operating point (Q1, Pw1) is a known data that has been previously observed for the individual injectors. The actuating pulse width Pw necessary for determining the desired volume Qf of injected fuel is given by multiplying the standard actuating pulse width Pw1 by a correction coefficient that is a ratio of the standard actuating pulse width Pws1 to the specified actuating pulse width Pw1. The correction coefficient is computed at plural selected pressure ranges of a hydraulically actuated fluid while the process of interpolation provides the correction coefficient at the residual pressure ranges. This makes it possible to eliminate the stoop change of the correction coefficient K with the result of the protection of the engine from torque-shock.

摘要翻译： 公开了一种用于发动机的燃料喷射系统，其中通过将电磁阀的标准导电持续时间校正到一个电磁阀，可以容易地提供每循环喷射所需体积的燃料所需的各个喷射器的标准导电持续时间 根据标准燃料喷射特性而发现。 控制器单元被存储有标准燃料喷射特性A，其用于获得与所喷射燃料的期望体积Qf相对应的标准导电持续时间的标准致动脉冲宽度Pws，这取决于所述喷射燃料的操作条件 发动机。 指定的工作点（Q1，Pw1）是先前针对各个喷射器观察到的已知数据。 通过将标准致动脉冲宽度Pw1乘以作为标准致动脉冲宽度Pws1与规定的起动脉冲宽度Pw1的比的校正系数来确定用于确定喷射燃料的期望体积Qf所需的启动脉冲宽度Pw。 在液压致动流体的多个选定压力范围内计算校正系数，而在内插过程中提供残余压力范围内的校正系数。 这使得可以消除校正系数K的弯曲变化，结果是保护发动机免受扭矩冲击。

公开(公告)号：US06032645A

公开(公告)日：2000-03-07

申请号：US256476

申请日：1999-02-23

申请人： Suzuhiro Saiki ,  Tadashi Uchiyama

发明人： Suzuhiro Saiki ,  Tadashi Uchiyama

IPC分类号： F02D45/00 ,  F02D29/00 ,  F02D41/04 ,  F02D41/08 ,  F02D41/38 ,  F02D41/40 ,  F02D31/00

CPC分类号： F02D41/083 ,  F02D41/3827

摘要： An electronic fuel injection apparatus for a diesel engine comprising a driving state detection means for detecting a driving state of a vehicle associated with an automatic transmission and a controller for periodically determining a target injection quantity based on the driving state. The target injection quantity at a time when a gearshift position is in a driving position is set to a driving target injection quantity which is obtained by adding a predetermined correction quantity to a target injection quantity at a time when the gearshift position is in a non-driving position. When the change of the gearshift position from the non-driving position to the driving position is detected, the target injection quantity is increasingly corrected to the driving target injection quantity.

摘要翻译： 一种用于柴油发动机的电子燃料喷射装置，包括用于检测与自动变速器相关联的车辆的驾驶状态的驱动状态检测装置和用于基于驾驶状态周期性地确定目标喷射量的控制器。 当换档位置处于驱动位置时的目标喷射量被设定为通过在换档位置处于非驱动位置时将预定校正量与目标喷射量相加而获得的驱动目标喷射量， 驾驶位置 当检测到换档位置从非驾驶位置到驾驶位置的变化时，目标喷射量越来越多地被校正到驾驶目标喷射量。

公开(公告)号：US6050240A

公开(公告)日：2000-04-18

申请号：US256475

申请日：1999-02-23

申请人： Suzuhiro Saiki ,  Tadashi Uchiyama

发明人： Suzuhiro Saiki ,  Tadashi Uchiyama

IPC分类号： F02D45/00 ,  F02D41/06 ,  F02D41/38 ,  F02D41/40 ,  F02D31/00

CPC分类号： F02D41/061 ,  F02D41/3827

摘要： An electronic fuel injection apparatus for a diesel engine comprising a driving state detection means for detecting a driving state of a vehicle and a controller for periodically determining a target injection quantity based on the driving state. When the driving state detection means indicates a state in a short time after engine start, a correction quantity which is preset to be added to the target injection quantity according to the engine temperature detected as the driving state is decreased, depending on time after engine start.

摘要翻译： 一种用于柴油发动机的电子燃料喷射装置，包括用于检测车辆的驾驶状态的驱动状态检测装置和用于基于驾驶状态周期性地确定目标喷射量的控制器。 当驾驶状态检测装置在发动机起动后的短时间内指示状态时，根据发动机起动时检测到的发动机温度，预先设定为与目标喷射量相加的修正量根据发动机起动后的时间而减少 。

公开(公告)号：US06220218B1

公开(公告)日：2001-04-24

申请号：US09253751

申请日：1999-02-22

申请人： Suzuhiro Saiki

发明人： Suzuhiro Saiki

IPC分类号： F02D908

CPC分类号： F02D41/3827 ,  F02D31/008 ,  F02D2250/02

摘要： An engine operation control device which sets higher than the target revolution speed for the idling state the target revolution speed of the engine immediately after the engine operation has shifted to the idling state, to prevent troubles caused by bubbles in the working fluid. When the engine operation shifts to the idling state at time t2, the count value Cnt of the idling counter starts counting. When the count value Cnt reaches the set value Cnt1, the revolution speed correction amount And is added to the target revolution speed for the idling state. The correction amount And progressively decreases with the elapse of time after the engine operation has shifted to the idling state. Because the fuel injection is performed in such a manner as to produce a higher target revolution speed than normal, it is possible to suppress the generation or expansion of bubbles that would otherwise occur under reduced pressure in the injectors used in the fuel injection system as a result of engine operation shift to the idling state.

摘要翻译： 一种发动机运转控制装置，其将发动机运转后的发动机的目标转速设定为比空转状态的目标转速转移到空转状态，以防止工作液体中的气泡引起的故障。 当发动机运转在时间t2转移到空转状态时，空转计数器的计数值Cnt开始计数。 当计数值Cnt达到设定值Cnt1时，将转速校正量And加到怠速状态的目标转速上。 校正量随着发动机操作转移到怠速状态之后的时间而逐渐减小。 由于燃料喷射的执行方式使得能够产生比正常情况更高的目标转速，所以可以抑制在燃料喷射系统中使用的喷射器中在减压下发生的气泡的产生或膨胀，作为 发动机运转结果转向空转状态。

公开(公告)号：US06374800B2

公开(公告)日：2002-04-23

申请号：US09839216

申请日：2001-04-23

申请人： Suzuhiro Saiki

发明人： Suzuhiro Saiki

IPC分类号： F02D4100

CPC分类号： F02D41/3827 ,  F02D31/008 ,  F02D2250/02

摘要： An engine operation control device which sets higher than the target revolution speed for the idling state the target revolution speed of the engine immediately after the engine operation has shifted to the idling state, to prevent troubles caused by bubbles in the working fluid. When the engine operation shifts to the idling state at time t2, the count value Cnt of the idling counter starts counting. When the count value Cnt reaches the set value Cnt1, the revolution speed correction amount Nad is added to the target revolution speed for the idling state. The correction amount Nad progressively decreases with the elapse of time after the engine operation has shifted to the idling state. Because the fuel injection is performed in such a manner as to produce a higher target revolution speed than normal, it is possible to suppress the generation or expansion of bubbles that would otherwise occur under reduced pressure in the injectors used in the fuel injection system as a result of engine operation shift to the idling state.

摘要翻译： 一种发动机运转控制装置，其将发动机运转后的发动机的目标转速设定为比空转状态的目标转速转移到空转状态，以防止工作液体中的气泡引起的故障。 当发动机运转在时间t2转移到空转状态时，空转计数器的计数值Cnt开始计数。 当计数值Cnt达到设定值Cnt1时，转速修正量Nad与空转状态的目标转速相加。 校正量Nad随着发动机操作已经转移到怠速状态之后的时间逐渐减小。 由于燃料喷射的执行方式使得能够产生比正常情况更高的目标转速，所以可以抑制在燃料喷射系统中使用的喷射器中在减压下发生的气泡的产生或膨胀，作为 发动机运转结果转向空转状态。