Fuel injection system controlling air/fuel ratio by intake manifold gas sensor
Air/fuel ratio for an internal combustion engine controlled by gas sensor in intake manifold
Air-fuel mixture control for automobile engine having fuel injection system
Exhaust gas recirculation control means for multiple cylinder engine having means for controlling air-fuel ratio in accordance with a signal from an exhaust gas sensor
Method and apparatus for controlling the composition of the combustible mixture of an engine
Exhaust gas recirculation system for internal combustion engine
Air/fuel ratio detector
Engine exhaust gas recirculation control system Patent #: 4614175
ApplicationNo. 06/916146 filed on 10/07/1986
US Classes:123/704, Air/fuel ratio prior to combustion responsive means123/568.26, Having electromechanical actuator control of EGR valve204/425With impressed current means
ExaminersPrimary: Wolfe, Willis R. Jr.
Attorney, Agent or Firm
International ClassesF02D 21/00 (20060101)
F02D 21/08 (20060101)
Foreign Application Priority Data1985-10-09 JP
AbstractIn an exhaust gas recirculation control system for an internal combustion engine, intake air at the same pressure as that of a mixed gas flowing in an intake duct 2 and free from the exhaust gas is introduced to a reference air chamber 5 of an oxygen sensor 4. Any detecting errors due to a pressure difference between the mixed gas in the intake duct and the reference gas in the air chamber are thus eliminated.