公开(公告)号：US4034730A

公开(公告)日：1977-07-12

申请号：US613314

申请日：1975-09-15

申请人： John A. Ayres ,  William H. Holl

发明人： John A. Ayres ,  William H. Holl

IPC分类号： F02D41/30 ,  F02M37/08 ,  F02M39/00

CPC分类号： F02M37/08 ,  F02D41/3082 ,  F02M2037/085 ,  Y10S261/74

摘要： In an internal combustion engine with exhaust means and a carburetor including a fuel bowl, means are provided for delivering fuel to the fuel bowl at a pressure varying in response to the output signal of an air-fuel ratio sensor in the exhaust means to maintain a substantially constant air-fuel ratio to the engine. The fuel supply means may comprise, for example, an electric fuel pump whose input power is varied according to the sensor signal.

摘要翻译： 在具有排气装置的内燃机和包括燃料碗的化油器中，设置有用于将燃料以对应于排气装置中的空燃比传感器的输出信号变化的压力输送到燃料碗的装置，以维持 与发动机基本恒定的空燃比。 燃料供给装置可以包括例如其输入功率根据传感器信号而变化的电动燃料泵。

公开(公告)号：US4999781A

公开(公告)日：1991-03-12

申请号：US380435

申请日：1989-07-17

申请人： William H. Holl ,  Wei-Ming Wang

发明人： William H. Holl ,  Wei-Ming Wang

IPC分类号： F02D41/00 ,  F02D41/18 ,  F02D41/24

CPC分类号： F02D41/0052 ,  F02D41/18 ,  F02D41/2412 ,  F02D2200/0406 ,  F02D2200/703 ,  Y02T10/47

摘要： Mass air flow into an internal combustion engine is measured as a function of throttle opening. The mass air flow rate is expressed as an idle offset constant and the product of gain and effective air intake area which is a function of throttle position. During idle, the idle offset term is updated in response to an exhaust oxygen sensor feedback and during part throttle operation the gain is similarly updated to achieve stoichiometry. For subsonic air flow the mass air flow is further modified as a function of the ratio of manifold pressure to the pressure upstream of the throttle. At the same time the manifold dilution is controlled via an EGR valve to a predetermined schedule.

摘要翻译： 作为节气门开度的函数测量进入内燃机的大量空气流。 质量空气流量表示为空闲偏移常数，增益和有效进气面积的乘积作为节气门位置的函数。 在空闲期间，响应于排气氧传感器反馈来更新空闲偏移项，并且在部分节流操作期间，增益被类似地更新以实现化学计量。 对于亚音速气流，质量空气流被进一步修改为歧管压力与节气门上游压力之比的函数。 同时，歧管稀释通过EGR阀控制到预定的时间表。

公开(公告)号：US3982517A

公开(公告)日：1976-09-28

申请号：US623966

申请日：1975-10-20

申请人： Douglas I. Fales ,  William H. Holl

发明人： Douglas I. Fales ,  William H. Holl

IPC分类号： F02M31/06 ,  F02M31/00

CPC分类号： F02M31/06 ,  Y02T10/126

摘要： A combustion engine with a carburetor and exhaust means is provided with an atmospheric air heater such as an exhaust stove. A metering valve supplies a variable mixture of heated air from the exhaust stove and cooler atmospheric air to the carburetor. The changing temperature and hence density of the air supplied to the carburetor produces a changing air-fuel ratio to the engine; and an oxygen sensor in the exhaust system generates a signal indicative of this ratio, which signal is applied through a feedback control system to actuation means for the metering valve to maintain the engine air-fuel ratio at a substantially constant predetermined level.

摘要翻译： 具有化油器和排气装置的内燃机设置有诸如排气炉的大气空气加热器。 计量阀将来自排气炉的加热空气和较冷的大气空气混合到可化油器。 供应给化油器的空气的温度变化和密度随之增加，从而产生与发动机不等的空燃比; 并且排气系统中的氧传感器产生指示该比率的信号，该信号通过反馈控制系统施加到用于计量阀的致动装置，以将发动机空燃比保持在基本上恒定的预定水平。