Hybrid drive system
AssigneeAvl Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof. Dr. Dr.h.c. Hans List
InventorsWolfgang Kriegler, Michael Rasser, Erwin Reisinger
Life of this patent
Estimating the term…
Abstract
A propulsion system includes an internal combustion engine predominantly operating in a steady-state mode and a driving engine operating in a transient mode, which act on the output shaft of a planetary gear train by first and second drive shafts. To obtain independent speed and torque values at the driven shaft, an additional transiently operating engine is provided which has a fixed r.p.m. ratio with the first drive shaft or the driven shaft of the planetary gear train. The two transient engines are configured as hydraulic engines or electric engines connected to a control device, a unit being provided for hydraulic or electric power flow between the two transient engines, which in turn is provided with an energy storage.
Claims9
A hybrid drive system which comprises:
- a planetary gear train having an output shaft,
- a primary internal combustion engine capable of steady-state operation,
- a primary drive shaft operatively connected between said primary internal combustion engine and said planetary gear train to rotate said output shaft,
- a first auxiliary engine capable of transient operation,
- a first auxiliary drive shaft operatively connected between said first auxiliary engine and said planetary gear train to rotate said output shaft,
- a second auxiliary engine capable of transient operation at a fixed rpm ratio relative to an rpm of one of said primary drive shaft and said output shaft,
- a second auxiliary drive shaft operatively connected between said second auxiliary engine and one of said primary drive shaft and said output shaft to rotate said output shaft,
- a first control means connected to said primary internal combustion engine and each of said first and second auxiliary engines to control operation thereof, and
- a second control means connected between said first and second auxiliary engines to control power flow therebetween, said second control means including an energy storage means.
Dependencies are inferred from the claim text.