Patent ID: 7479091
Filing Date: 2009-01-20
Classification: B60K,B60L,B60W,F02N,Y02T,Y10T

Abstract:
1. A power system of controllable transmission, the power system incorporated with an engine that controls the engine to run at a substantially fixed speed or approaching a fixed speed within an rpm range with higher BSFC (braking specific fuel consumption) when the engine is started up from static status and in an acceleration from low to high rpm, an output end of the engine is provided to drive a controllable front-end gearbox that is capable of actively controlling and executing variable or invariable gearshift so to activate the output end to execute the acceleration from lower to higher rpm; meanwhile, in the course of the start-up and the acceleration from lower to higher rpm and in driving operation, the engine runs in an rpm range with higher BSFC for saving fuel, wherein: the engine ( a clutch ( the controllable front-end gearbox ( the active control device ( the rear-end output gearbox ( a manual operation interface ( the drive control interface ( wherein said power system as described above upon starting the engine (