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    • 4. 发明授权
    • Combined split engine and feedback controlled engine operations
    • 组合分裂发动机和反馈控制发动机操作
    • US4263782A
    • 1981-04-28
    • US052431
    • 1979-06-26
    • Junichiro MatsumotoHaruhiko IizukaFukashi Sugasawa
    • Junichiro MatsumotoHaruhiko IizukaFukashi Sugasawa
    • F02D41/02F01N3/20F01N9/00F01N13/02F02D17/02F02D41/00F02D41/04F02D41/14F02D41/36F01N3/15F02D17/00
    • F02D41/1443F01N13/009F01N3/20F01N9/00F02D41/0087F01N2430/02F01N2430/06Y02T10/47
    • A control system for a multi-cylinder internal combustion engine comprises a split engine control unit for operating the engine on partial cylinders when reduced engine power can adequately operate the vehicle, and first and second exhaust conduits for directing exhaust gases from first and second group cylinders respectively to a common junction to which a common exhaust conduit is connected for directing the gases to the atmosphere. A first set of an exhaust gas sensor and catalytic converter is disposed in the second conduit to be exposed to the stream of gases exhausted from the second group cylinders which are activated at all times and a second set of an exhaust gas sensor and catalytic converter is disposed in the common conduit to be exposed to the stream of gases exhausted from the first group cylinders directed through the first conduit and to the gases passed through the upstream side catalytic converter in the second conduit. Feedback mixture control operation is effected on the basis of the signal from the first exhaust gas sensor during the partial cylinder mode and a full cylinder mode in which the second gas sensor is still below its normal operating temperature. The signal from the second gas sensor is utilized for the feedback operation in the full cylinder mode in which the temperature of the latter sensor is above its normal operating point.
    • 一种用于多气缸内燃机的控制系统,包括用于在减少的发动机功率能够充分地操作车辆时在部分气缸上操作发动机的分体式发动机控制单元,以及用于引导来自第一和第二组气缸的废气的第一和第二排气导管 分别连接到连接有公共排气导管以将气体引导到大气中的公共接头。 第一组废气传感器和催化转化器设置在第二导管中以暴露于从第二组气缸排出的气体,该气体始终被激活,第二组废气传感器和催化转化器是 设置在公共管道中以暴露于从通过第一管道引导的第一组气缸排出的气体流和通过第二管道中的上游侧催化转化器的气体。 基于在部分气缸模式期间来自第一排气传感器的信号和第二气体传感器仍然低于其正常工作温度的全气缸模式进行反馈混合控制操作。 来自第二气体传感器的信号用于全气缸模式中的反馈操作,其中后者传感器的温度高于其正常工作点。
    • 5. 发明授权
    • Stoichiometric and enrichment mixture control during different split
engine modes
    • 不同分体式发动机模式下的化学计量和浓缩混合物控制
    • US4245471A
    • 1981-01-20
    • US48156
    • 1979-06-13
    • Fukashi SugasawaHaruhiko IizukaJunichiro Matsumoto
    • Fukashi SugasawaHaruhiko IizukaJunichiro Matsumoto
    • F02D41/02F01N3/20F01N3/22F01N9/00F01N13/02F02D17/02F02D21/08F02D41/00F02D41/14F02D41/36F01N3/15F02D17/00
    • F02D17/02F01N13/009F01N3/20F01N3/22F01N9/00F02D41/0087F01N2430/02Y02T10/47
    • A control system for a multi-cylinder internal combustion engine comprises a split engine control unit for operating the engine on partial cylinders when reduced engine power can adequately operate the vehicle, and first and second upstream exhaust conduits for directing exhaust gases from first and second group cylinders respectively to a common junction to which a common downstream exhaust conduit is connected for emitting the gases to the atmosphere. A first catalytic converter is disposed in the second exhaust conduit to be exposed to the stream of gases exhausted from the second group cylinders which are activated at all times and a second catalytic converter is disposed in the common downstream conduit to be exposed to the stream of gases exhausted from the first group cylinders directed through the first conduit and to the gases passed through the first catalytic converter. An exhaust gas sensor is provided in the common exhaust conduit upstream of the downstream converter. A feedback control circuit is responsive to signals from the gas sensor to effect closed loop mixture control in which the air-fuel mixture supplied to all the cylinders during the full cylinder mode is controlled to the stoichiometric point so that both converters each promote simultaneous reduction of the NOx component and oxidation of the HC and CO components. A feedback control disabling circuit is provided which is effective during the partial cylinder mode for controlling the air-fuel ratio to the rich side of the stoichiometric point to promote reduction of the NOx component in the first converter and oxidation of the HC and CO components in the second converter.
    • 一种用于多气缸内燃机的控制系统,包括用于在减少的发动机功率能够充分地操作车辆时将发动机运行在部分气缸上的分体式发动机控制单元,以及用于引导来自第一组和第二组的废气的第一和第二上游排气导管 气缸分别连接到共同的下游排气导管连接到公共接头,以将气体排放到大气中。 第一催化转化器设置在第二排气管道中以暴露于从第二组气缸排出的气体,该气体始终被激活,并且第二催化转化器设置在公共下游管道中以暴露于 从第一组气缸排出的气体通过第一导管和通过第一催化转化器的气体排出。 排气传感器设置在下游转换器上游的公共排气管道中。 反馈控制电路响应于来自气体传感器的信号来实现闭环混合控制,其中在全气缸模式期间供应到所有气缸的空气 - 燃料混合物被控制到化学计量点,使得两个转化器均可同时减少 HC和CO组分的NOx成分和氧化。 提供反馈控制禁止电路,其在部分气缸模式期间有效,用于控制到化学计量点的浓侧的空燃比,以促进第一转化器中的NOx组分的降低和HC和CO组分的氧化 第二个转换器。
    • 9. 发明授权
    • Combined split engine and closed loop mixture control operation with
enriched fuel during partial cylinder mode
    • 在部分气缸模式下,组合分体式发动机和闭环混合控制操作与浓缩燃料
    • US4274373A
    • 1981-06-23
    • US46350
    • 1979-06-07
    • Fukashi SugasawaHaruhiko IizukaJunichiro Matsumoto
    • Fukashi SugasawaHaruhiko IizukaJunichiro Matsumoto
    • F02D41/14B01D53/94F01N3/20F01N3/22F01N9/00F01N13/02F02D17/02F02D21/08F02D41/02F02D41/04F01N3/15
    • B01D53/9454B01D53/9495F01N13/009F01N3/20F01N3/22F01N9/00F02D17/02F01N2430/02Y02T10/22Y02T10/47
    • A control system for a multi-cylinder internal combustion engine comprises a split engine control unit for operating the engine on partial cylinders when reduced engine power can adequately operate the vehicle, and first and second upstream exhaust conduits for directing exhaust gases from first and second group cylinders respectively to a common junction to which a downstream exhaust conduit is connected for emitting the gases to the atmosphere. A first set of an exhaust gas sensor and catalytic converter is disposed in the first conduit to be exposed to the stream of gases exhausted from the second group cylinders which are activated at all times and a second set of an exhaust gas sensor and catalytic converter is disposed in the common downstream conduit to be exposed to the stream of gases exhausted from the first group cylinders directed through the first conduit and to the gases passed through the upstream catalytic converter in the second conduit. A feedback control circuit is responsive selectively to a signal from the first gas sensor during the partial cylinder operation for correcting the mixture ratio to a rich side of stoichiometry to promote reduction of the NOx component in the upstream converter and oxidation of HC and CO components in the downstream converter, and to a signal from the second gas sensor during the full cylinder operation for correcting the mixture ratio to a point at or near stoichiometry to promote simultaneous reduction and oxidation processes in both of the converters.
    • 一种用于多气缸内燃机的控制系统,包括用于在减少的发动机功率能够充分地操作车辆时将发动机运行在部分气缸上的分体式发动机控制单元,以及用于引导来自第一组和第二组的废气的第一和第二上游排气导管 气缸分别连接到连接下游排气导管以将气体排放到大气中的公共连接点。 第一组排气传感器和催化转化器设置在第一管道中,以暴露于从第二组气缸排出的气体,其始终被激活,第二组排气传感器和催化转化器是 设置在公共下游导管中,以暴露于从第一组气缸排出的气体引导通过第一导管和通过第二导管中的上游催化转化器的气体。 反馈控制电路在部分气缸操作期间选择性地响应来自第一气体传感器的信号,以将混合比率校正为化学计量浓度的一侧,以促进上游转化器中的NOx组分的降低和HC和CO组分的氧化 下游转换器,以及来自第二气体传感器的信号,用于在整个气缸操作期间将混合比率校正为化学计量或接近化学计量点,以促进两个转换器中的同时还原和氧化过程。