Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Crankshaft rotation control in a hybrid electric vehicle










Image Number 3 for United States Patent #6453864.

A method of controlling engine crankshaft motion in a hybrid electric drive system having an internal combustion engine and a motor-generator operatively connected to a crankshaft of the engine is disclosed. The steps include monitoring the crankshaft position, forecasting a crankshaft stall position; comparing the forecast stall position with a target range; and if the forecast crankshaft stall position is outside the target range, operating the motor-generator to modify the forecast stall position to be within the target range. These steps properly position the crankshaft for re-initiating engine start-up. The method further includes the steps of calculating an effective lube interval time once the crankshaft speed is zero; comparing the effective lube interval time to a critical time; and if the effective lube interval time is greater than the critical time, pulsing the motor-generator to rock the crankshaft for a pulse time to redistribute a lubricant film.








 
 
  Recently Added Patents
Wristwatch
Method and system for remotely testing a wireless device
Extreme ultraviolet light source device and method for generating extreme ultraviolet light
Organic light emitting diode device and fabrication method thereof
Determination of statistical upper bound for estimate of noise power spectral density
Semiconductor devices and methods for changing operating characteristics and semiconductor systems including the same
Method and system for prioritizing points of interest for display in a map using category score
  Randomly Featured Patents
Process for the fabrication of a composition formed by thermocompression
Faucet for a wash basin or other sanitary equipment which opens and closes automatically
Polyareneazole/thermoplastic pulp and methods of making same
Cellular user interface
Method of selecting a frequency band of an output audio signal by a computer
Culinary whisk with coated wires and handle
Dual operating system operation and configuration
Method for improving the quality of an SiC crystal and an SiC semiconductor device
Packaging for audio video cable
Cover device for a micro-optomechanical component, and manufacturing method for such a cover device