US 4,098,144 AGranted

Drive assembly with energy accumulator

AssigneeMaschinenfabrik Augsburg-Nurnberg Aktiengesellschaft

InventorsGunter Besel, Karl Nikolaus Regar

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Abstract

A drive assembly including a prime mover, a primary energy accumulator, such as a flywheel, and an output shaft. Power distribution means, such as a differential gear arrangement, is provided for connecting the output shaft to both the energy accumulator and the prime mover. A clutch is provided for connecting the prime mover directly to the output shaft. A hydrostatic torque converter is operatively connected between the prime mover and the power distribution means, the torque converter including a hydraulic pump operated by the prime mover, a hydraulic unit in hydraulic circuit with the pump operable as both a pump and a motor, and a buffer energy accumulator connected to the unit. The prime mover may be an internal combustion engine or an electric motor, or the assembly may include both an engine and a motor alternatively connectable to the torque converter and to the output shaft.

Claims11

Dependent claims

A drive assembly for a machine having variable operating speeds, comprising

(a) a prime mover (1),
(b) a primary energy accumulator (6),
(c) an output shaft (10)
(d) a power distribution means (4) for connecting said output shaft to both said primary energy accumulator and said prime mover,
(e) clutch means (7) for directly connecting said prime mover to said output shaft, and
(f) a hydrostatic torque converter operatively connected between said prime mover and said power distribution means, said converter including
(I) a hydraulic pump (2) operable by said prime mover,
(II) a displacement hydraulic unit (3) operable as a pump or as a motor in each of its directions of rotation,
(III) means connecting said displacement hydraulic unit to said power distribution means,
(IV) hydraulic circuit means interconnecting said pump and said displacement hydraulic unit, and
(V) a buffer energy accumulator (9) hydraulically connected to said displacement hydraulic unit, said buffer energy accumulator communicating with said power distribution means only through said displacement hydraulic unit.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/670,590Filed 26 Mar 1976
Priority: DE 25150487 Apr 1975
Granted: 4 Jul 1978
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B60K 6/12
Prime-movers comprising combustion engines and mechanical or fluid energy storing means: by means of a chargeable fluidic accumulator
B60K 6/105
By means of a chargeable mechanical accumulator, e.g. flywheel: the accumulator being a flywheel
F16H 61/4096
Fluid exchange between hydrostatic circuits and external sources or consumers: with pressure accumulators
Y02T 10/62
Other road transportation technologies with climate change mitigation effect: hybrid vehicles