Resources Contact Us Home
Air/fuel control including lean cruise operation

Image Number 3 for United States Patent #5787380.

A control method is described for an engine having a throttle body coupled to the engine intake manifold and a bypass air passageway coupled to the throttle body via an electronically controllable bypass valve. A single measurement of air inducted through both the throttle body and the bypass air passageway is provided by an air flow meter. Fuel is delivered to the intake manifold in relation to the single air measurement. An air flow correction value is generated from a functional relationship between engine torque and air/fuel ratio during lean air/fuel operating conditions. Air flow through the bypass passageway is increased by the air flow correction value to compensate for engine torque loss resulting from such lean operation.

  Recently Added Patents
Nonvolatile semiconductor memory device and method for controlling the same
Systems and methods for unchoked control of gas turbine fuel gas control valves
Generating agricultural information products using remote sensing
Reverse mapping method and apparatus for form filling
Article based on a composition containing a crosslinked blend of elastomers
Battery loading and unloading mechanism
Curable sublimation marking material and sublimation transfer process using same
  Randomly Featured Patents
Nucleic acid sequences and expression system relating to Enterococcus faecium for diagnostics and therapeutics
Circuits that use a postamble signal to determine phase and frequency errors in the acquisition of a preamble signal
Cosmetic case
Data extracting circuit
Tire with belt structure including a pair of lateral bands
Computer printable jigsaw puzzle
Method and system for the modular design and layout of integrated circuits
Low distortion cooled mirror
Angle grinder
Packaging machine for wrapping books or the like