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公开(公告)号：USRE31906E
公开(公告)日：1985-06-04
申请号：US382692
申请日：1982-05-27
CPC分类号： F02D41/187 , F02D41/1479 , F02D41/182 , F02D41/24
摘要： A control system including a microprocessor for controlling the controlled variables of an internal combustion engine, especially, the flow rate of fuel is disclosed. An air flow meter provides an output signal having such a non-linear characteristic relative to the flow rate of intake air that the signal level increases in the region of the small flow rate of intake air. The microprocessor carries out necessary digital computation on the basis of the output signal of the air flow meter to provide a fuel flow rate control signal. This digital control signal is converted into a signal having a linear characteristic proportional to the flow rate of intake air, or after having been produced from the microprocessor, converted into a signal including information proportional to the flow rate of intake air.
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公开(公告)号：US4381668A
公开(公告)日：1983-05-03
申请号：US178597
申请日：1980-08-15
CPC分类号： G01F1/684 , G01F1/6842 , G01F5/00
摘要： An intake barrel connected to an intake pipe of an internal combustion engine is provided therein with a venturi member. Openings are formed in the wall of the intake barrel at the upstream and downstream sides of the venturi member. A bypass passage forming member provided with a groove of a length greater than the distance between said openings is fixed to the outside of the intake barrel. A bypass passage is formed by these openings and the groove. A spacer is interposed between the intake barrel and the bypass passage forming member. The cross-sectional area of the bypass passage can be varied by varying the thickness of the spacer.
摘要翻译： 连接到内燃机的进气管的进气筒在其中设置有文氏管部件。 在文丘里管构件的上游侧和下游侧的入口管壁形成开口。 设置有大于所述开口之间的距离的槽的旁路通道形成构件被固定到进气筒的外部。 这些开口和凹槽形成旁路通道。 间隔件设置在进气筒和旁路通路形成部件之间。 可以通过改变间隔件的厚度来改变旁路通道的横截面面积。
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公开(公告)号：US4612895A
公开(公告)日：1986-09-23
申请号：US647660
申请日：1984-09-06
IPC分类号： F02D41/34 , F02D41/00 , F02D43/00 , F02D45/00 , F02M69/00 , F02M69/52 , G01F1/684 , G01F1/69 , G01F1/698 , F02B3/00
CPC分类号： G01F1/69 , F02D43/00 , G01F1/684 , G01F1/6842 , G01F1/698 , F02D2200/0606
摘要： In order to take into consideration the different response by a hot wire sensor to changes in temperature of air as opposed to changes in temperature of fuel, the circuit configuration of a hot wire sensor for fuel flow detection differs from that for air flow detection in that an additional resistance is connected in series with the flow measuring resistance in the bridge circuit of the fuel flow detector, while the additional resistance is connected in series with the temperature compensating resistance in the bridge circuit of the air flow detector.
摘要翻译： 为了考虑到与热燃料温度变化相反的热线传感器对空气温度变化的不同响应，用于燃料流量检测的热线传感器的电路结构与用于气流检测的电路结构的电路结构不同 附加电阻与燃料流量检测器的桥式电路中的流量测量电阻串联连接，而附加电阻与空气流量检测器的桥式电路中的温度补偿电阻串联。
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公开(公告)号：US4562731A
公开(公告)日：1986-01-07
申请号：US438773
申请日：1982-11-03
CPC分类号： G01F1/684 , G01F1/6842 , G01F1/698 , G01F5/00
摘要： An air flow meter comprises an air velocity measuring resistor and a temperature compensating resistor and is installed in a bypass passage provided at an intake passage running through an air horn. The air velocity measuring resistor and the temperature compensating resistor are supported by lead wires whose portions exposed in the bypass passage have the same length. A cover forming the bypass passage is made of heat insulating synthetic resin material to prevent heats from being transmitted to the resistors.
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公开(公告)号：US4558678A
公开(公告)日：1985-12-17
申请号：US465342
申请日：1983-02-09
IPC分类号： F02D41/34 , F02B75/02 , F02M51/02 , F02M69/18 , F02M69/32 , F02M69/48 , G01F1/684 , G01F1/72 , G01F5/00 , F02M51/00
CPC分类号： F02M69/32 , F02M51/02 , F02M69/18 , F02M69/48 , G01F1/6842 , G01F1/72 , G01F5/00 , F02B2075/027
摘要： A fuel feeding apparatus for internal combustion engines, of the type having a heat-type air flow meter disposed in a bypass air passage detouring an air-intake passage, an air metering valve adapted to be actuated by a proportional type electromagnetic device to control the flow rate of air in the bypass air passage substantially at a constant level in response to the output signal from the heat-type air flow meter, and a fuel metering valve adapted to be actuated by the proportional type electromagnetic device simultaneously with the control of air flow rate by the air metering valve. A pulsation suppressing means is disposed in the bypass air passage to suppress the pulsation of air pressure in the latter thereby to decrease the measurement error in the heat-type air flow meter.
摘要翻译： 一种用于内燃机的燃料供给装置，其具有设置在旁通空气通道中的热式空气流量计，迂回进气通道，适于由比例型电磁装置致动的空气计量阀，以控制 响应于来自热式空气流量计的输出信号，旁通空气通道中的空气的流量基本上处于恒定水平，以及适于由比例型电磁装置致动的燃料计量阀，同时控制空气 通过空气计量阀的流量。 旁通空气通道中设置有脉动抑制装置，以抑制空气压力的脉动，从而降低热式空气流量计的测量误差。
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公开(公告)号：US4527423A
公开(公告)日：1985-07-09
申请号：US461556
申请日：1983-01-27
摘要： Air flowing through an air cleaner is passed through a main passage and drawn into an internal-combustion engine, with a part of the air flowing through the main passage flowing into a by-pass passage having an air flow sensor mounted therein. A length of the by-pass passage is substantially three or more times longer than that of a part of the main passage corresponding thereto. Accordingly, even when the internal-combustion engine is operated with a throttle nearly totally open and the air in the main passage is pulsated, the average flow rate in the by-pass passage increases due to the inertial lag effect obtained by lengthening the by-pass passage, so that it is possible to prevent the output of the flow sensor from being undesirably lowered.
摘要翻译： 流过空气滤清器的空气通过主通道并被吸入内燃机，其中一部分空气流过主通道流入其中安装有空气流量传感器的旁路通道。 旁路通道的长度比对应于其的主通道的一部分的长度大大多三倍以上。 因此，即使内燃机在节气门几乎完全打开并且主通道中的空气脉动的情况下操作时，旁通通道中的平均流量由于通过延长旁通通道而获得的惯性滞后效应而增加， 从而可以防止流量传感器的输出不期望地降低。
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公开(公告)号：US4201166A
公开(公告)日：1980-05-06
申请号：US952737
申请日：1978-10-19
申请人： Yutaka Nishimura , Yoshishige Oyama
发明人： Yutaka Nishimura , Yoshishige Oyama
IPC分类号： F02D41/04 , F02B1/04 , F02D35/00 , F02D41/14 , F02D41/18 , F02M3/09 , F02M7/24 , F02M7/28 , F02M7/12
CPC分类号： F02D41/1487 , F02D35/0007 , F02D41/1479 , F02D41/18 , F02M3/09 , F02M7/24 , F02B1/04
摘要： An air to fuel ratio control system for an internal combustion engine having a fixed venturi type carburetor is disclosed. The air to fuel ratio control system comprises a device for extracting an atmospheric pressure within a venturi or a pressure corresponding to a relieved venturi vacuum, a device for extracting a static fuel pressure downstream of a main jet provided in a fuel path, a device for comparing those pressures directly or indirectly and a device for controlling the static fuel pressure in accordance with an output of the detecting device. Control is made such that the difference between those pressures is always maintained substantially constant. The air to fuel ratio control system may further comprise a device for detecting composition of exhaust gas of the engine. An output of the composition detecting device is applied to a control device which controls the static fuel pressure based on the output of the differential pressure detecting device and the output of the composition detecting device.
摘要翻译： 公开了一种具有固定文丘里型化油器的内燃机的空燃比控制系统。 空气/燃料比控制系统包括用于提取文氏管内的大气压力或对应于减压文丘里真空的压力的装置，用于提取设置在燃料路径中的主喷射下游的静态燃料压力的装置，用于 直接或间接地比较这些压力，以及根据检测装置的输出控制静态燃料压力的装置。 进行控制使得这些压力之间的差异始终保持基本恒定。 空燃比控制系统还可以包括用于检测发动机排气成分的装置。 构图检测装置的输出应用于基于差压检测装置的输出和构图检测装置的输出来控制静态燃料压力的控制装置。
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公开(公告)号：US06343585B1
公开(公告)日：2002-02-05
申请号：US09709404
申请日：2000-11-13
IPC分类号： F02B1700
CPC分类号： F02D13/023 , F01L1/267 , F01L9/04 , F01L13/0036 , F01L2201/00 , F01L2800/00 , F02B3/06 , F02B17/005 , F02B19/12 , F02B23/101 , F02B2023/102 , F02B2023/108 , F02B2075/125 , F02B2275/40 , F02D11/105 , F02D13/0261 , F02D29/02 , F02D33/00 , F02D35/023 , F02D37/02 , F02D41/0225 , F02D41/023 , F02D41/1446 , F02D41/1475 , F02D41/149 , F02D41/1497 , F02D41/187 , F02D41/3029 , F02D41/307 , F02D41/3082 , F02D41/34 , F02D41/3809 , F02D41/3845 , F02D41/402 , F02D2041/001 , F02D2041/002 , F02D2041/389 , F02D2200/0602 , F02D2250/18 , F02F2001/241 , F02M26/55 , F02M26/57 , F02M45/02 , F02M69/045 , F02M2026/002 , F02M2026/003 , F16H61/0213 , F16H61/14 , F16H63/502 , F16H2061/0018 , Y02T10/12 , Y02T10/123 , Y02T10/125 , Y02T10/18 , Y02T10/42 , Y02T10/44 , Y10T477/663 , Y10T477/677 , Y10T477/68
摘要： The engine disclosed features an engine cylinder provided with an air intake valve, an injector having a fuel injection port which is directed towards an interior of the engine cylinder, and a control unit which is connected to the air intake valve and to the injector, the control unit effecting changes in the air intake amount by controlling the degree of opening of the air intake valve, and, also, controls the air/fuel ratio by changing the amount of fuel supplied by the injector. The engine also has an exhaust valve in the engine cylinder such that the control unit controls the intake valve and the exhaust valve so that an opening period of the intake valve is overlapped with an opening period of the exhaust valve at least when the opening period of the intake valve is maximum. The period of the overlap is longer when a relatively large amount of air is required than when a relatively small amount of air is required. According to such a scheme, the amount of the air can be changed by the lift of the intake valve. By changing the lift, the overlap with an exhaust valve is also changed. During the high-output or power operation, the period of overlap between the exhaust valve and the intake valve is made longer. When engine torque decreases to a level lower than the target engine torque, the air amount is adjusted by the cam or the throttle valve.
摘要翻译： 所公开的发动机具有设置有进气阀的发动机气缸，具有朝向发动机气缸内部的燃料喷射口的喷射器，以及连接到进气阀和喷射器的控制单元， 控制单元通过控制进气阀的开度来实现进气量的变化，并且还通过改变由喷射器供应的燃料量来控制空气/燃料比。 发动机还在发动机气缸中具有排气阀，使得控制单元控制进气门和排气门，使得进气门的打开时段至少与排气门的打开时段重叠，至少在打开期间 进气阀最大。 当需要相对大量的空气时，与需要相对少量的空气相比，重叠的时间段更长。 根据这种方案，可以通过进气门的升程来改变空气量。 通过改变电梯，与排气阀的重叠也改变。 在高输出或动力运行期间，排气阀和进气阀之间的重叠时间较长。 当发动机扭矩降低到低于目标发动机扭矩的水平时，空气量由凸轮或节流阀调节。
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公开(公告)号：US4751907A
公开(公告)日：1988-06-21
申请号：US906949
申请日：1986-09-15
申请人： Tadahiro Yamamoto , Eiichi Ohnishi , Tadaki Oota , Hiroaki Oogane , Minoru Osuga , Yoshishige Oyama
发明人： Tadahiro Yamamoto , Eiichi Ohnishi , Tadaki Oota , Hiroaki Oogane , Minoru Osuga , Yoshishige Oyama
IPC分类号： F02D35/00 , F02D41/14 , G01N27/406 , G01N31/22
CPC分类号： G01N27/4065 , F02D35/003 , F02D41/2441 , F02D41/2474 , F02D41/2454
摘要： In an A/F ratio sensor of mixture supplied for an internal combustion engine, which has a detector for detecting the concentration of residual oxygen in exhaust gas and determines the A/F ratio by retrieving an air excess ratio table with an output of the detector, there is further provided an additional air introducing device, which introduces a predetermined quantity of air into the engine for a certain period of time, under the condition that the velocity of air flowing through a throttle valve is equal to the sonic velocity. The oxygen concentration detector is calibrated by the comparison of the outputs thereof before and after introduction of the additional air. According to this invention, the A/F ratio of the mixture can be detected accurately without the influence of the aged deterioration of the oxygen concentration.
摘要翻译： 在供给用于内燃机的混合物的A / F比传感器中，其具有用于检测废气中的残余氧浓度的检测器，并且通过用检测器的输出检索空气过剩率表来确定A / F比 进一步提供了一种额外的空气引入装置，其在流过节流阀的空气的速度等于声速的条件下，将预定量的空气引入发动机中一段时间。 通过在引入附加空气之前和之后的输出的比较来校准氧浓度检测器。 根据本发明，可以准确地检测混合物的A / F比，而不会受到氧浓度老化的影响。
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公开(公告)号：US4748953A
公开(公告)日：1988-06-07
申请号：US932375
申请日：1986-11-20
申请人： Minoru Osuga , Yoshishige Oyama
发明人： Minoru Osuga , Yoshishige Oyama
CPC分类号： F02D41/1483 , F02D41/1479 , F02D41/1456
摘要： In feedback control for the air/fuel ratio based on a sensor producing an output signal proportional to a change in the air/fuel ratio, a control constant modifier is operative to vary the proportional component and the integration component in a feedback system in accordance with an air/fuel ratio set for controlling, thereby assuring stability of ultimate fuel control.
摘要翻译： 在基于产生与空气/燃料比的变化成比例的输出信号的传感器的空燃比的反馈控制中，控制常数修正器用于根据反馈系统改变反馈系统中的比例分量和积分分量 设定用于控制的空气/燃料比，从而确保最终燃料控制的稳定性。
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