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
Image reading apparatus
Phase-amplitude 3-D stereo encoder and decoder
Apparatus and method to simulate a power trip to a disk drive
Random access point (RAP) formation using intra refreshing technique in video coding
Catalytic pyrolysis using UZM-44 aluminosilicate zeolite
Method of manufacturing III-nitride crystal
Treatment of influenza
  Randomly Featured Patents
Method and apparatus for developing a metadata-infused software program for controlling a robot
Cosmetic skin conditioning compositions containing a salicyloxy .alpha.-carboxy acid
Soybean variety XB33B10
Print system motion sensor with feedback control
Golf ball
Method of monitoring and controlling laser shock peening using an in plane deflection test coupon
Nozzle arrangement with a movable roof structure
Surface acoustic wave device
Support device for a curtain movable in two mutually orthogonal directions
Torque indicating device