US 2014/0277892 A1Published application

Hybrid drive system

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsTaku Harada, Masatoshi Ito, Kazuyuki Shiiba

Life of this patent

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Abstract

In order to provide a hybrid drive system that suppresses a useless change of a pump driving path and that has a high durability, a plurality of drive sources, an output mechanism that outputs rotational power to an outside on the basis of those operation states, a control device that controls the operation states of the drive sources, an oil pump, and a pump input selecting mechanism that causes the oil pump to be driven with one of a plurality of rotary shafts to which power from the corresponding drive sources is inputable, are included, and the control device controls the rotation speeds (V1, V2) of the plurality of rotary shafts to unequal speeds by controlling the operation state of one of the plurality of drive sources.

Claims9

Dependent claims

A hybrid drive system including:

a plurality of mutually different drive sources;
an output mechanism configured to output rotational power from at least one of the plurality of drive sources to an outside on the basis of operation states of the plurality of drive sources;
a control device configured to control the operation states of the plurality of drive sources;
an oil pump including a pump rotor that rotates so as to pressurize and discharge oil;
and a pump input selecting mechanism including a plurality of rotary shafts to which rotational power from each of the drive sources is inputable and configured to cause the pump rotor to rotate with the use of one of the rotary shafts, having a higher rotation speed,
wherein the control device changes the operation state of one of the plurality of drive sources such that the rotation speeds of the plurality of rotary shafts are returned to fall outside a preset equal speed region on the condition that the rotation speeds of the plurality of rotary shafts fall within the equal speed region.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/355,883Filed 11 Nov 2011
Published: 18 Sep 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B60W 10/26
Including control of energy storage means: for electrical energy, e.g. batteries or capacitors
B60K 6/445
Series-parallel type: differential gearing distribution type
B60W 10/06
Including control of propulsion units: including control of combustion engines
B60W 10/08
Including control of propulsion units: including control of electric propulsion units, e.g. motors or generators

Family

US 9,180,869 B2Related patent
US 2014/0277892 A1This patent

From the US filing history. Foreign family members aren’t listed.

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