Title:
METHODS FOR OPTIMIZING THE EFFICIENCY OF A SERIES HYBRID VEHICLE WITH MULTI-GEAR TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2011/084584
Kind Code:
A3
Abstract:
In a series hybrid vehicle, a system for determining a shift schedule for shifting a multi-gear transmission connected to a drive means is disclosed. A vehicle operator selects among a plurality of shift styles respectively representing a plurality of shift schedules variously optimized for performance or fuel economy. A performance-based shift schedule favors providing maximum power to the road by starting at the first (lowest) gear when accelerating from a stop and utilizing all available gears of the transmission. An economy based shift schedule favors energy efficiency by skipping the first gear and optionally one or more higher-numbered gears in order to bias operation of the drive means toward lower speeds and higher torque output while reducing shift frequency. The invention provides for maintaining the number of gear ratio choices provided by a transmission having relatively many distinct gear ratios, while providing for reduced frequency of shifting and driver choice of a shift schedule favoring either performance or economy.
More Like This:
Inventors:
GRAY CHARLES L JR (US)
Application Number:
PCT/US2010/060733
Publication Date:
July 02, 2015
Filing Date:
December 16, 2010
Export Citation:
Assignee:
US ENVIRONMENT (US)
International Classes:
F16H61/04; F16H59/10
Foreign References:
| US20060167610A1 | 2006-07-27 | |||
| US20030119630A1 | 2003-06-26 | |||
| US20080146407A1 | 2008-06-19 | |||
| JP2000055187A | 2000-02-22 | |||
| JP2007100762A | 2007-04-19 |
Attorney, Agent or Firm:
READ, David (NVFEL2565 Plymouth Rd, Ann Arbor MI, US)
Download PDF:
Previous Patent: MULTIFUNCTIONAL ADDITIVES IN ENGINEERING THERMOPLASTICS
Next Patent: DIHYDROETHIDINE ANALOGUES AND USES THEREOF
Next Patent: DIHYDROETHIDINE ANALOGUES AND USES THEREOF