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
Method of generating integrated circuit model
Medical imaging probe with rotary encoder
Rear bumper for an automobile
Storage device having clock adjustment circuitry with firmware-based predictive correction
Polishing composition
Particle-loaded membrane for solid-phase-extraction and method for performing SALDI-MS analysis of an analyte
Direct file transfer between subscribers of a communications systems
  Randomly Featured Patents
Gate turn-off thyristor
Bump-on-lead flip chip interconnection
Process for the partial solubilization of phosphate rock and obtaining phosphate fertilizers therefrom
Lightweight global distribution mechanism
Video-tape recording
Method and system for locating objects in an image
Method and apparatus for proportionately multiplexing data streams onto one data stream
System and method for providing a security check on a credit card
Adaptive controller and adaptive control method that can adaptively control a plurality of variable high frequency devices at high speed
Bandwidth conservation by reallocating unused time scheduled for a radio to another radio