Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Internal combustion engine control for improved fuel efficiency










Image Number 7 for United States Patent #8131447.

A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, selected combustion events are skipped during operation of the internal combustion engine so that other working cycles can operate at a better thermodynamic efficiency. In one aspect of the invention, an engine is controlled to operate in a variable displacement mode. In the variable displacement mode, fuel is not delivered to the working chambers (e.g. cylinders) during selected "skipped" working cycles. During active ("non-skipped") working cycles, a maximum (e.g., unthrottled) amount of air and an optimized amount of fuel is delivered to the relevant working chambers so that the fired working chambers can operate at efficiencies closer to their optimal efficiency. A controller is used to dynamically determine the chamber firings required to provide the engine torque based on the engine's current operational state and conditions. The chamber firings may be sequenced in real time or in near real time in a manner that helps reduce undesirable vibrations of the engine.








 
 
  Recently Added Patents
White polyester film and surface light source therewith
Configurable memory controller/memory module communication system
Micromechanical component, device for beam deflection of monochromatic light, and spectrometer
Power or voltage oscillation damping in a power transmission system
Method and system for scaling usage of a social based application on an online social network
Organic light emitting device connection methods
Method of manufacturing nitride semiconductor and nitride semiconductor element
  Randomly Featured Patents
Apparatus and method for accessing a plurality of computer devices having a common address
Bicycle stem
Error correcting method and device
Catalyst systems containing an organic disulfide carboxylates and/or organic complex compounds of metals, and basic amines for the oxidative hardening of plastics precursors containing mercapt
SERS diagnostic platforms, methods and systems microarrays, biosensors and biochips
Rigging system for an endless oil mop
Connector element with means for reducing effects of radial void in electrical connection
System and method for providing a window management mode
Benzotriazine compounds
Combined cup and plate holder