公开(公告)号：US5529034A

公开(公告)日：1996-06-25

申请号：US334709

申请日：1994-11-04

申请人： Shigeru Sone ,  Tadahisa Naganawa ,  Senji Kato ,  Kouji Endou ,  Nobuhisa Ohkawa ,  Atsushi Gotou

发明人： Shigeru Sone ,  Tadahisa Naganawa ,  Senji Kato ,  Kouji Endou ,  Nobuhisa Ohkawa ,  Atsushi Gotou

IPC分类号： G01M15/04 ,  F01L1/34 ,  F01L1/344 ,  F02B1/04 ,  F02B3/06 ,  F02B77/08 ,  F02D13/02 ,  F02D41/22

CPC分类号： F02D13/0261 ,  F01L1/34406 ,  F02D13/0215 ,  F02D41/221 ,  F01L2001/0537 ,  F01L2201/00 ,  F02B1/04 ,  F02B3/06 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/40

摘要： A cam shaft of an engine is provided with a timing change mechanism (VVT) which is driven by hydraulic pressure to alter the timing of a intake valve (valve timing). This VVT is controlled to change the valve overlap of the intake valve and an exhaust valve, thereby adjusting the suction and exhaust in and from a combustion chamber. To control the VVT, an electronic control unit (ECU) computes a target value for the valve timing in accordance with the running condition of the engine and controls the supply of the hydraulic pressure to the VVT based on the target value. The ECU determines the level of the actual hydraulic pressure given to the VVT. When the actual valve timing does not lie in a predetermined range with respect to the target value, the ECU determines that an abnormality has occurred in the VVT, and executes a predetermined fail safe routine. When the hydraulic pressure is equal to or smaller than a reference value, the ECU suppresses WT malfunction determinations.

摘要翻译： 发动机的凸轮轴设置有由液压驱动以改变进气门的正时（气门正时）的定时改变机构（VVT）。 该VVT被控制以改变进气门和排气阀的阀重叠，从而调节来自燃烧室的吸入和排出。 为了控制VVT，电子控制单元（ECU）根据发动机的运行状况计算出阀正时的目标值，并根据目标值控制对VVT的液压供给。 ECU确定给予VVT的实际液压压力水平。 当实际气门正时相对于目标值不在预定范围内时，ECU判定VVT中发生了异常，并执行预定的故障安全程序。 当液压等于或小于参考值时，ECU抑制WT故障确定。

公开(公告)号：US5537961A

公开(公告)日：1996-07-23

申请号：US552817

申请日：1995-11-03

申请人： Sone Shigeru ,  Tadahisa Naganawa ,  Senji Kato ,  Kouji Endou ,  Nobuhisa Ohkawa ,  Atsushi Gotou

发明人： Sone Shigeru ,  Tadahisa Naganawa ,  Senji Kato ,  Kouji Endou ,  Nobuhisa Ohkawa ,  Atsushi Gotou

IPC分类号： G01M15/04 ,  F01L1/34 ,  F01L1/344 ,  F02B1/04 ,  F02B3/06 ,  F02B77/08 ,  F02D13/02 ,  F02D41/22

CPC分类号： F02D13/0261 ,  F01L1/34406 ,  F02D13/0215 ,  F02D41/221 ,  F01L2001/0537 ,  F01L2201/00 ,  F02B1/04 ,  F02B3/06 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/40

摘要： A cam shaft of an engine is provided with a timing change mechanism (VVT) which is driven by hydraulic pressure to alter the timing of a intake valve (valve timing). This VVT is controlled to change the valve overlap of the intake valve and an exhaust valve, thereby adjusting the suction and exhaust in and from a combustion chamber. To control the VVT, an electronic control unit (ECU) computes a target value for the valve timing in accordance with the running condition of the engine and controls the supply of the hydraulic pressure to the VVT based on the target value. The ECU determines the level of the actual hydraulic pressure given to the VVT. When the actual valve timing does not lie in a predetermined range with respect to the target value, the ECU determines that an abnormality has occurred in the VVT, and executes a predetermined fail safe routine. When the hydraulic pressure is equal to or smaller than a reference value, the ECU suppresses VVT malfunction determinations.

摘要翻译： 发动机的凸轮轴设置有由液压驱动以改变进气门的正时（气门正时）的定时改变机构（VVT）。 该VVT被控制以改变进气门和排气阀的阀重叠，从而调节来自燃烧室的吸入和排出。 为了控制VVT，电子控制单元（ECU）根据发动机的运转状况计算出阀正时的目标值，并根据目标值控制对VVT的液压供给。 ECU确定给予VVT的实际液压压力水平。 当实际气门正时相对于目标值不在预定范围内时，ECU判定VVT中发生了异常，并执行预定的故障安全程序。 当液压等于或小于参考值时，ECU抑制VVT故障确定。

公开(公告)号：US5694912A

公开(公告)日：1997-12-09

申请号：US704166

申请日：1996-08-28

申请人： Atsushi Gotou ,  Senji Kato

发明人： Atsushi Gotou ,  Senji Kato

IPC分类号： F02D45/00 ,  F01L1/344 ,  F02D13/02 ,  F02D41/00 ,  F02D41/04 ,  F02D41/14 ,  F02D41/24 ,  F01L1/34

CPC分类号： F02D41/2441 ,  F01L1/34406 ,  F02D41/0002 ,  F02D41/2448 ,  F02D41/2454 ,  F01L2001/0537 ,  Y02T10/42

摘要： A fuel injection amount control apparatus for an engine comprises injectors for injecting fuel to an engine and an electronic control unit (ECU) for controlling the injectors. The ECU learns the deviation between the air-fuel ratio of a flammable mixture to be supplied to the engine and the target value. The ECU controls the amount of fuel injection to the engine by reflecting the learning value on the computation of the injection amount. The engine has intake valves, exhaust valves and an apparatus for altering the open/close characteristics of the intake valves. The ECU computes the learning value of the air-fuel ratio in accordance with the behavior of the characteristic altering apparatus and the running conditions of the engine. When the coolant temperature of the engine is low and the learning value is not renewed, the ECU compensates the already updated learning value to a smaller value. The ECU performs this compensation based on the ratio of the real valve characteristic to the valve characteristic for the engine in a fully warmed-up state.

摘要翻译： 用于发动机的燃料喷射量控制装置包括用于向发动机喷射燃料的喷射器和用于控制喷射器的电子控制单元（ECU）。 ECU了解要提供给发动机的易燃混合物的空燃比与目标值之间的偏差。 ECU通过反映计算注入量的学习值来控制向发动机的燃料喷射量。 发动机具有进气门，排气门和用于改变进气门的打开/关闭特性的装置。 ECU根据特征改变装置的行为和发动机的运行条件来计算空燃比的学习值。 当发动机的冷却剂温度低且学习值不更新时，ECU将已经更新的学习值补偿为较小的值。 ECU根据实际阀特性与发动机在完全预热状态下的阀门特性的比例执行该补偿。