US 2014/0179477 A1Published application

Vehicle

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsMasafumi YAMAMOTO, Atsushi TABATA, Koichi OKUDA, Keita IMAI, Keisuke OMURO

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Abstract

A vehicle using a first MG, a second MG, and an engine as drive sources includes an electric oil pump, a mechanical oil pump driven by power of the engine, and a hydraulic circuit. The hydraulic circuit includes first oil passages for supplying oil to the first MG, a second oil passage for supplying oil to the second MG, a switch-over valve capable of switching over states of communication of the first oil passage, and a switch control valve that outputs pilot hydraulic pressure to the switch-over valve. States of the switch-over valve are switched over in accordance with hydraulic pressure from the switch control valve and hydraulic pressure from the mechanical pump.

Claims7

Dependent claims

A vehicle including a first motor, a second motor, and an engine as drive sources, the vehicle comprising:

a mechanical pump that discharges oil using power from the engine;
an electric pump that discharges oil using electricity;
a first oil passage for supplying oil discharged from at least one of the mechanical pump and the electric pump to the first motor;
a second oil passage for supplying oil discharged from at least one of the mechanical pump and the electric pump to the second motor;
a switch-over valve provided on the first oil passage and capable of switching over to any of a first state in which the oil flowing through the first oil passage is allowed to be supplied to the first motor and a second state in which the oil flowing through the first oil passage is not allowed to be supplied to the first motor;
and
a switch control valve that outputs hydraulic pressure to the switch-over valve,
the switch-over valve being configured to switch over to any of the first state and the second state in accordance with hydraulic pressure from the switch control valve and hydraulic pressure from the mechanical pump.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/140,129Filed 24 Dec 2013
Priority: JP 2012-28092225 Dec 2012
Published: 26 Jun 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification38 codes

B60K 6/20
Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric…
B60K 6/12
Prime-movers comprising combustion engines and mechanical or fluid energy storing means: by means of a chargeable fluidic accumulator
B60K 6/445
Series-parallel type: differential gearing distribution type
B60K 6/547
Transmission for changing ratio: the transmission being a stepped gearing