公开(公告)号：US5848529A

公开(公告)日：1998-12-15

申请号：US933618

申请日：1997-09-08

Applicant: Kenji Katoh ,  Masato Gotoh ,  Takamitsu Asanuma

Inventor： Kenji Katoh ,  Masato Gotoh ,  Takamitsu Asanuma

IPC: F01L1/34 ,  F01N3/08 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  F02D13/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F01N3/00

CPC classification number: F02D13/0215 ,  F01L1/34 ,  F01N3/0842 ,  F02D13/0261 ,  F02D41/0002 ,  F02D41/0275 ,  F01L2201/00 ,  F02D2013/0292 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/42

Abstract: An apparatus for, and a method of, purifying exhaust gas emitted from an internal combustion engine reduces fuel consumption under a lean operating condition and generates high torque under a rich operating condition without deteriorating the cleanness of exhaust gas and the driveability of the engine. The apparatus and method improve the durability of a variable valve timing mechanism of the engine. The engine operation involves lean and rich operating conditions. The variable valve timing mechanism of the apparatus changes the open and close timing of at least one of intake and exhaust valves of the engine. The apparatus further has a catalytic converter in an exhaust system, to occlude NOx under the lean operating condition and discharge and reduce the occluded NOx under the rich operating condition. The apparatus also has a prohibition unit for prohibiting the variable valve timing mechanism from changing the valve open and close timing of the valves when the air-fuel ratio of the engine is changed from lean to rich to discharge and reduce the occluded NOx.

Abstract translation: 用于净化从内燃机排出的废气的装置和方法，在稀薄运行状态下降低燃料消耗，并且在丰富的运行状态下产生高扭矩，而不会降低排气的清洁度和发动机的驱动性。 该装置和方法提高了发动机的可变气门正时机构的耐久性。 引擎操作涉及精益和丰富的操作条件。 该装置的可变气门正时机构改变发动机的进气门和排气门中的至少一个的打开和关闭正时。 该装置还具有排气系统中的催化转化器，以在稀薄运行状态下封闭NOx，并在富运行条件下排放并减少封闭的NOx。 该装置还具有禁止单元，用于当发动机的空燃比从稀燃变为浓度以排出并且减少封闭的NOx时，禁止可变气门正时机构改变阀的开阀和关闭正时。

公开(公告)号：US5690071A

公开(公告)日：1997-11-25

申请号：US741063

申请日：1996-10-28

Applicant: Mrdjan J. Jankovic

Inventor： Mrdjan J. Jankovic

IPC: F01L1/34 ,  F02D41/00 ,  F02M7/00

CPC classification number: F02D41/0002 ,  F01L1/34 ,  F01L2201/00 ,  F02D2041/001 ,  Y02T10/42

Abstract: A method of compensating for torque variations resulting from camshaft motion in a variable camshaft timing system by adjusting the intake manifold mass air flow as a function of the camshaft schedule. The adjustment can be made using the air bypass valve, or by modifying the throttle command to an electronically controlled throttle if the vehicle is so equipped.

Abstract translation: 通过调节作为凸轮轴调度的函数的进气歧管质量空气流量来补偿由可变凸轮轴正时系统中的凸轮轴运动引起的转矩变化的方法。 如果车辆如此配备，则可以使用空气旁通阀进行调节，或者通过将节气门指令修改为电子控制节气门。

公开(公告)号：US5558051A

公开(公告)日：1996-09-24

申请号：US477250

申请日：1995-06-07

Applicant: Mamoru Yoshioka

Inventor： Mamoru Yoshioka

IPC: F01L13/00 ,  F01L1/34 ,  F02D13/02 ,  F02D41/08 ,  F02D41/12 ,  F02D43/00 ,  F02D45/00

CPC classification number: F02D13/0234 ,  F01L1/34 ,  F02D13/0261 ,  F02D41/086 ,  F02D41/123 ,  F01L2201/00 ,  F02B2275/18 ,  F02D2041/001 ,  F02D2041/002 ,  Y02T10/18

Abstract: A valve timing control device for an internal combustion engine comprises a variable valve timing mechanism capable of varying a valve overlap period. Fuel injection can be stopped in at least one predetermined engine operating condition and an optimal value of the valve overlap period in the current engine operating condition can be determined, on the basis of current engine speed, load, and temperature. The variable valve timing mechanism can be controlled such that the valve overlap period becomes larger than the optimal value when fuel injection is stopped. Accordingly, in the idle condition when the engine has not warmed up, intake air is heated sufficiently, by the valve overlap period, to more than the optimal value and an engine stall at this time is completely prevented by increasing the amount of intake air.

Abstract translation: 用于内燃机的气门正时控制装置包括能够改变气门重叠周期的可变气门正时机构。 可以在至少一个预定的发动机运转状态下停止燃料喷射，并且可以基于当前的发动机转速，负载和温度来确定当前发动机运行状态下的阀重叠周期的最佳值。 可以控制可变气门正时机构，使得当重新启动燃料时，气门重叠周期大于最佳值。 因此，在发动机未加热的怠速状态下，通过阀重叠期间将进气充分地加热到超过最佳值，并且通过增加进气量来完全防止此时的发动机失速。

公开(公告)号：US5529034A

公开(公告)日：1996-06-25

申请号：US334709

申请日：1994-11-04

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

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

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

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

Abstract: 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.

Abstract translation: 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：US5517955A

公开(公告)日：1996-05-21

申请号：US457421

申请日：1995-06-01

Applicant: Mamoru Yoshioka

Inventor： Mamoru Yoshioka

IPC: F01L13/00 ,  F01L1/344 ,  F02D13/02 ,  F02D41/04 ,  F02D41/06 ,  F01L1/34

CPC classification number: F02D13/0234 ,  F01L1/34406 ,  F02D13/0261 ,  F01L2201/00 ,  F02D2013/0292 ,  F02D2041/001 ,  F02D2041/002 ,  Y02T10/18

Abstract: A valve timing control device for an internal combustion engine. The device comprises first determination means for determining a first optimal value of the valve overlap period in the current engine operating condition, on the basis of the current engine speed and load, second determination means for determining a second optimal value of the valve overlap period in the current engine operating condition by reducing the first optimal value when the engine has not warmed up, and valve overlap period control means for controlling a valve overlap period using the first optimal value when the current degree of opening of the throttle valve is larger than a predetermined value, even if the engine has not warmed up. A back-flow of exhaust gas does not occur when the degree of the throttle valve is relatively large so that the valve overlap period at this time is made larger and a higher engine torque can be obtained to increase the trapping efficiency and the scavenging efficiency, even if the engine has not warmed up.

Abstract translation: 一种用于内燃机的气门正时控制装置。 该设备包括：第一确定装置，用于根据当前发动机转速和负载确定当前发动机工作状态下的气门重叠周期的第一最佳值;第二确定装置，用于确定阀重叠周期的第二最佳值， 当发动机未加热时通过减小第一最佳值的当前发动机运转状态;以及当重合节流阀的当前开度大于a时，利用第一最优值控制气门重叠周期的气门重叠时段控制装置 即使发动机没有升温也是预定值。 当节流阀的程度相对较大时，不会发生废气的回流，从而使得此时的阀重叠时间更大，并且可以获得更高的发动机转矩以提高捕集效率和清除效率， 即使发动机没有升温。

公开(公告)号：US5462022A

公开(公告)日：1995-10-31

申请号：US348185

申请日：1994-11-29

Applicant: Masayasu Ushida

Inventor： Masayasu Ushida

IPC: F02B77/08 ,  F01L1/344 ,  F02D13/02 ,  F02D45/00 ,  F02P7/067 ,  F02P17/00 ,  F01L1/34

CPC classification number: F02D13/0219 ,  F01L1/344 ,  F02D13/0238 ,  F01L2201/00 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18

Abstract: A transmitting device is operative for transmitting a rotational force from a crankshaft to a camshaft. A rotational phase adjusting device is operative for adjusting a relative rotational phase between the crankshaft and the camshaft. A crank angle sensor is operative for detecting a rotational angle of the crankshaft, and outputting a rotational angle detection signal indicative thereof. At least one signal inducing member is provided on the camshaft. A cam angle sensor cooperating with the signal inducing member is operative for outputting a cam signal each time the camshaft reaches a predetermined rotational angle. A phase controlling device is operative for monitoring a phase difference between the cam signal and the rotational angle detection signal determined while an arbitrarily-chosen angle of the crankshaft is used as a reference, and for determining an amount of the adjustment by the rotational phase adjusting device so that the monitored phase difference will be equal to a target value. A cylinder discriminating device is operative for setting a discrimination angular range with respect to the rotational angle detection signal outputted by the crank angle sensor. The discrimination angular range is smaller than an angle of 360 degrees of the crankshaft and greater than at least an angular range corresponding to a range of the phase adjustable by the rotational phase adjusting device. The cylinder discrimination device is also operative for discriminating cylinders on the basis of a presence and an absence of the cam signal synchronous with the discrimination angular range.

Abstract translation: 传动装置用于将旋转力从曲轴传递到凸轮轴。 旋转相位调节装置用于调节曲轴和凸轮轴之间的相对旋转相位。 曲柄角传感器用于检测曲轴的旋转角度，并输出指示曲轴的旋转角度检测信号。 在凸轮轴上设置有至少一个信号感应构件。 与信号感应构件配合的凸轮角度传感器可用于每当凸轮轴达到预定旋转角度时输出凸轮信号。 相位控制装置用于监视在使用曲轴的任意选择的角度作为基准时确定的凸轮信号和旋转角度检测信号之间的相位差，并且用于通过旋转相位调整来确定调整量 器件，使得所监视的相位差将等于目标值。 气缸识别装置用于设定相对于由曲柄角传感器输出的旋转角检测信号的判别角度范围。 鉴别角度范围小于曲轴360度的角度，并且大于对应于由旋转相位调节装置调节的相位范围的至少一个角度范围。 气缸识别装置还可以基于与鉴别角度范围同步的凸轮信号的存在和不存在来识别气缸。

公开(公告)号：US5445123A

公开(公告)日：1995-08-29

申请号：US345344

申请日：1994-11-21

Applicant: Mitsuo Hitomi ,  Shunji Masuda ,  Toshihiko Hattori ,  Kenji Kashiyama ,  Junsou Sasaki

Inventor： Mitsuo Hitomi ,  Shunji Masuda ,  Toshihiko Hattori ,  Kenji Kashiyama ,  Junsou Sasaki

IPC: F01L1/26 ,  F01L1/34 ,  F02B1/04 ,  F02B23/08 ,  F02B41/02 ,  F02B47/08 ,  F02B75/18 ,  F02B75/22 ,  F02D13/02 ,  F02D15/04 ,  F02F1/42 ,  F02B29/00

CPC classification number: F02D13/0261 ,  F01L1/265 ,  F01L1/34 ,  F02B41/02 ,  F02B47/08 ,  F02B75/22 ,  F02D13/0219 ,  F02D13/0257 ,  F02D13/0265 ,  F02D13/0276 ,  F02D15/04 ,  F02F1/4221 ,  F01L2201/00 ,  F02B1/04 ,  F02B2075/1824 ,  F02B2275/08 ,  F02B2275/18 ,  F02B2275/48 ,  F02D2041/001 ,  Y02T10/121 ,  Y02T10/125 ,  Y02T10/18

Abstract: A spark ignition type reciprocating engine of a natural intake system with an ignition plug arranged to face a combustion chamber defined and delimited by a piston inserted into a cylinder so as to move in a reciprocating way, which has:a bore size of the cylinder ranging from approximately 45 mm to 67 mm;a volume of a single chamber of the cylinder ranging from approximately 110 cc to 340 cc;a ratio of a stroke of the piston to the bore size of the cylinder being larger than 1; anda compression ratio of the engine being 11 or larger.

Abstract translation: 一种具有火花塞的火花点火式往复式发动机，其具有火花塞，其布置成面对由插入到气缸中的活塞限定和界定的燃烧室，以便以往复运动的方式移动，所述活塞具有：气缸范围的孔径 从大约45mm到67mm; 气缸的单室的体积范围为约110cc至340cc; 活塞的冲程与气缸的内径大小之比大于1; 发动机的压缩比为11以上。

公开(公告)号：US5400747A

公开(公告)日：1995-03-28

申请号：US158737

申请日：1993-11-30

Applicant: Taro Tabata ,  Masaaki Shinojima

Inventor： Taro Tabata ,  Masaaki Shinojima

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02 ,  F16D3/10

CPC classification number: F16D3/10 ,  F01L1/34406 ,  F02D13/0238 ,  F02D13/0261 ,  F01L2001/34443 ,  F01L2201/00 ,  F02D2041/001 ,  Y02T10/18

Abstract: A valve timing control apparatus in an internal combustion engine, designed to improve its controllability by deciding a control value by taking into consideration the number of the internal combustion engine and the direction to which the valve timing is to be changed, said valve timing control apparatus which changes the valve timing by changing the rotational phase of the camshaft with respect to the crankshaft comprising: means for detecting the operating condition of the internal combustion engine; means for deciding an optimum timing of the valve from the operating condition detected; means for grasping the present timing of the valve by detecting a phase difference of the camshaft from the crankshaft; and means for causing the present timing to become the optimum timing, wherein there is further provided means for discriminating the direction (advance, retard) to which the valve timing is to be changed from a phase difference between the present timing and the optimum timing in order that the change of direction is reflected in the decision of the control value.

Abstract translation: 一种内燃机中的气门正时控制装置，其特征在于，所述气门正时控制装置被设计为通过考虑内燃机的数量和气门正时的变化方向决定控制值来提高其可控性，所述气门正时控制装置 其通过改变凸轮轴相对于曲轴的旋转相位来改变气门正时，包括：用于检测内燃机的运行状态的装置; 用于从所检测的操作条件确定所述阀的最佳定时的装置; 通过检测凸轮轴与曲轴的相位差来掌握阀的当前正时的装置; 以及用于使当前定时成为最佳定时的装置，其中进一步提供了用于从当前定时和最佳定时之间的相位差鉴别气门正时要改变的方向（提前，延迟）的装置， 指示方向的变化反映在控制值的决定中。

公开(公告)号：US5245968A

公开(公告)日：1993-09-21

申请号：US924811

申请日：1992-08-04

Applicant: Tom T. Kolias ,  Hsien C. Pao

Inventor： Tom T. Kolias ,  Hsien C. Pao

IPC: F01L1/34 ,  F02B75/18 ,  F02D13/02 ,  F02D41/02 ,  F02D41/34 ,  F02D45/00 ,  F02P7/06 ,  F02P7/067 ,  F02P7/077 ,  F02P15/00

CPC classification number: F02D41/009 ,  F01L1/34 ,  F02P15/008 ,  F02P7/061 ,  F02P7/0675 ,  F02P7/0775 ,  F01L2201/00 ,  F02B2075/1832 ,  F02D2041/001 ,  F02D2041/0092

Abstract: A detection system and method for determining the phase relationship between a crankshaft and one or more independently phase shiftable camshafts which the system integrates into camshaft and cylinder identification sensors for determining both cam location for variable cam phasing, and for generating a cylinder identification signal uniquely identifying one of the cylinders, for sequential fuel injection, thus reducing: (i) the number of sensors needed to operate the system to a single crankshaft sensor and a single sensor for each camshaft; and (ii) the number of high-speed inputs needed on the on-board engine control unit microprocessor. The number of sensing teeth on the independent cam wheels vary depending upon the number of cylinders and the number of independently phase shiftable camshafts in the engine. Each sensing tooth is associated with one of the engine's cylinders and one cam wheel contains an extra cylinder identification tooth associated with a selected cylinder.

公开(公告)号：US5222465A

公开(公告)日：1993-06-29

申请号：US859019

申请日：1992-03-30

Applicant: Katsuhiko Sakamoto ,  Toshiya Kan

Inventor： Katsuhiko Sakamoto ,  Toshiya Kan

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02

CPC classification number: F02D13/0238 ,  F01L1/34406 ,  F02D13/0261 ,  F01L2201/00 ,  F02D2041/001 ,  Y02T10/18

Abstract: A valve timing control system for varying a valve timing determines whether an engine operating condition falls within a specific valve timing range established for a specific valve timing or a standard valve timing range, other than the specific valve timing range, established for a standard valve timing. A valve timing device is activated so as to change a valve timing to the standard valve timing when the engine operates in the standard valve timing range. The valve timing device is also deactivated so as to change a valve timing to the specific valve timing when the engine operates in the specific valve timing range.

Abstract translation: 用于改变气门正时的气门正时控制系统确定发动机工作状态是否落在为特定的气门正时设定的特定气门正时范围内，或标定气门正时范围以外的标准气门正时范围 。 当发动机在标准气门正时范围内工作时，启动气门正时装置以将气门正时改变为标准气门正时。 气门正时装置也被停用，以便当发动机在特定气门正时范围内工作时，将气门正时改变为特定气门正时。