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    Exhaust gas purification by gas reaction in exhaust catalyst
    2.
    发明授权
    Exhaust gas purification by gas reaction in exhaust catalyst 失效
    废气净化废气中的气体反应催化剂

    公开(公告)号：US5765368A

    公开(公告)日：1998-06-16

    申请号：US735053

    申请日：1996-10-23

    申请人： Toshiki Matsumoto ,  Kinji Hodaira

    发明人： Toshiki Matsumoto ,  Kinji Hodaira

    IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/32 ,  F01N13/02 ,  F02D35/00 ,  F02D41/02 ,  F02D41/14

    CPC分类号： F01N3/222 ,  F01N13/0097 ,  F01N3/2006 ,  F01N3/22 ,  F01N3/323 ,  F02D35/0038 ,  F02D41/024 ,  F01N2430/06 ,  Y02T10/26

    摘要： In an engine, if a catalytic converter is not in the activated region, a fuel injection rate is corrected to increase, and a secondary air is introduced from a secondary air feed port into a catalytic converter. Even immediately after the cold start of the engine, the fuel injection rate is increased to be richer in fuel than the stoichiometric air/fuel ratio to feed the secondary air simultaneously, so that the temperatures of the catalytic converter and the exhaust gas can be kept over the activation temperature by the heat of the reaction of the increased fuel in the catalytic converter thereby to improve the exhaust gas purification.

    摘要翻译： 在发动机中，如果催化转化器不在激活区域中，则校正燃料喷射率增加，并且二次空气从二次空气进料口引入催化转化器。 即使在发动机冷启动之后，即使燃料喷射率增加，燃料比化学计量空气/燃料比还要富，同时供给二次空气，可以保持催化转化器和废气的温度 通过催化转化器中增加的燃料的反应热量超过活化温度，从而改善排气净化。

    Method and arrangement for controlling the supply of secondary air for an internal combustion engine
    4.
    发明授权
    Method and arrangement for controlling the supply of secondary air for an internal combustion engine 失效
    用于控制用于内燃机的二次空气供应的方法和装置

    公开(公告)号：US5444975A

    公开(公告)日：1995-08-29

    申请号：US218342

    申请日：1994-03-25

    申请人： Jochen Gohre ,  Winfried Moser

    发明人： Jochen Gohre ,  Winfried Moser

    IPC分类号： F01N3/22 ,  F01N3/32 ,  F01N9/00 ,  F01N11/00 ,  F02D35/00 ,  F02D41/14

    CPC分类号： F01N3/222 ,  F01N11/00 ,  F01N3/22 ,  F02D35/0038 ,  F01N2550/00 ,  F01N2550/14 ,  Y02T10/47

    摘要： The invention is directed to a method and an arrangement for controlling the supply of secondary air to the exhaust gas of an internal combustion engine. A method for diagnosing this arrangement is also provided. The arrangement includes an electrically operated secondary air pump which can be operated in at least two stages in dependence upon operating parameters of the engine. In this way, the supply of secondary air can be finely adapted to the actual value of the exhaust gas quantity supplied by the engine. This fine adaptation is determined by the number of stages. Resistors are switched into the current supply of the secondary air pump for the drive which has at least two stages.

    摘要翻译： 本发明涉及一种用于控制向内燃机的废气供应二次空气的方法和装置。 还提供了用于诊断该布置的方法。 该装置包括电动二次空气泵，其可以根据发动机的操作参数在至少两个阶段中操作。 以这种方式，二次空气的供应可以精细地适应于由发动机供应的排气量的实际值。 这种精细的适应性由阶段数量决定。 电阻器切换到具有至少两个级的驱动器的二次空气泵的电流源。

    Idle speed control system for a two-cycle engine
    6.
    发明授权
    Idle speed control system for a two-cycle engine 失效
    一个双循环发动机的空转速度控制系统

    公开(公告)号：US4969435A

    公开(公告)日：1990-11-13

    申请号：US383804

    申请日：1989-07-21

    申请人： Koji Morikawa ,  Hideo Watanabe

    发明人： Koji Morikawa ,  Hideo Watanabe

    IPC分类号： F02D41/14 ,  F02B75/02 ,  F02D31/00 ,  F02D35/00 ,  F02D41/00 ,  F02D41/16

    CPC分类号： F02D41/0007 ,  F02D31/008 ,  F02D35/0038 ,  F02B2075/025 ,  F02B2275/14 ,  F02D2400/04 ,  Y02T10/123 ,  Y02T10/144

    摘要： A two-cycle engine has a scavenge pump provided in an intake passage, and a fuel/air injector provided for injecting fuel directly in a cylinder of the engine together with air. A control unit has a calculator for calculating quantities of fuel and air injected from the fuel/air injector and for producing a fuel injection pulse width signal and an air injection pulse width signal based on the calculated quantities. Engine speed at idling state is compared with a desired idle speed and an error signal is produced. At least one of the pulse width signals is corrected with a correction value for controlling the injection quantity so as to cause the idle speed to converge to the desired idle speed.

    摘要翻译： 双循环发动机具有设置在进气通道中的清扫泵，以及用于将燃料与空气一起直接喷射到发动机气缸中的燃料/空气喷射器。 控制单元具有计算器，用于计算从燃料/空气喷射器喷射的燃料和空气的量，并且用于基于计算的量产生燃料喷射脉冲宽度信号和空气喷射脉冲宽度信号。 将怠速状态下的发动机转速与期望的怠速进行比较，产生误差信号。 用用于控制喷射量的校正值来校正脉冲宽度信号中的至少一个，以使怠速速度收敛到期望的怠速。

    System for introducing secondary air into an internal combustion engine
    7.
    发明授权
    System for introducing secondary air into an internal combustion engine 失效
    将二次空气引入内燃机的系统

    公开(公告)号：US4087964A

    公开(公告)日：1978-05-09

    申请号：US733167

    申请日：1976-10-18

    申请人： Hideo Miyagi

    发明人： Hideo Miyagi

    IPC分类号： F01N3/22 ,  F02D35/00 ,  F01N3/10

    CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N3/227 ,  F02D35/0038 ,  Y02T10/22

    摘要： A system for introducing secondary air into gas exhausted from an internal combustion engine of the carburetor type, provided with a three-way catalytic converter in the exhaust system of the engine. The system includes a flow control valve having a diaphragm operated valve member for controlling the amount of secondary air in accordance with electric signals from a .lambda.-sensor arranged in an exhaust system of the engine so that excess air ratio .lambda. of the exhaust gas, which is introduced into the three-way catalytic converter, is controlled near 1.0. Therefore, effective cleaning operation of the three-way catalytic converter is expected.

    摘要翻译： 一种用于将二次空气引入从化油器类型的内燃机排出的气体的系统，在发动机的排气系统中设置有三元催化转化器。 该系统包括流量控制阀，其具有隔膜操作的阀构件，用于根据布置在发动机的排气系统中的λ传感器的电信号来控制二次空气的量​​，使得排气的过量空气比λ 被引入三元催化转化器，控制在1.0附近。 因此，期望三效催化转化器的有效清洗操作。

    Apparatus for the control of air admission to the exhaust system of an internal combustion engine including a safety circuit means
    9.
    发明授权
    Apparatus for the control of air admission to the exhaust system of an internal combustion engine including a safety circuit means 失效
    用于控制进入包括安全电路装置的内燃机的排气系统的空气的装置

    公开(公告)号：US4024707A

    公开(公告)日：1977-05-24

    申请号：US575995

    申请日：1975-05-09

    申请人： Peter Jurgen Schmidt ,  Harald Kizler

    发明人： Peter Jurgen Schmidt ,  Harald Kizler

    IPC分类号： F01N3/22 ,  F02D35/00 ,  F02D41/14 ,  F01N3/10

    CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N3/227 ,  F02D35/0038 ,  F02D41/1454

    摘要： An internal combustion engine which is provided with an exhaust gas treatment system, such as thermal or catalytic reactors, includes a primary regulating system for admitting fresh air to the exhaust system for the chemical processes taking place in the reactors. This fresh air regulation depends on the engine rpm and on the induction tube pressure. There is also provided a secondary air control system, including a three-way valve and an electronic controller and an oxygen probe, located in the exhaust manifold. The probe supplies the controller with a signal related to the oxygen concentration in the exhaust gas and the controller uses this signal to actuate the three-way valve which admits either induction tube pressure or, alternatively, exhaust system pressure, to a control chamber in the primary regulating system, thereby influencing the quantity of fresh air supplied to the exhaust manifold of the engine.

    摘要翻译： 设置有诸如热或催化反应器的废气处理系统的内燃机包括用于将新鲜空气引入排气系统以用于在反应器中进行的化学过程的初级调节系统。 这种新鲜空气调节取决于发动机转速和感应管压力。 还提供了二次空气控制系统，其包括位于排气歧管中的三通阀和电子控制器以及氧气探头。 探头向控制器提供与排气中的氧气浓度相关的信号，并且控制器使用该信号来致动三通阀，其将感应管压力或可选的排气系统压力引导到控制室中 主调节系统，从而影响供应给发动机排气歧管的新鲜空气量。