US 7,000,718 B2Granted

Power output apparatus and hybrid vehicle with power output apparatus mounted thereon

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsMasatoshi Adachi, Masahiro Kojima, Koichi Kondo, Hiroshi Hata, Keijiro Oshima

Life of this patent

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Abstract

A hybrid vehicle may run with only the power from a motor MG2, while an engine is at a stop. In this state, the control procedure drives a motor MG1 to rotate a crankshaft at an idling engine speed for a predetermined time period, when at least one of an observed oil temperature in a sump, an observed temperature of the motor MG1, an observed temperature of the motor MG2, an observed revolving speed of the motor MG1, and an observed revolving speed of the motor MG2 is not less than a corresponding preset value. Rotation of the crankshaft at the idling engine speed results in driving an oil pump to feed a supply of lubricating oil to mechanical part of the power output apparatus including a power distribution integration mechanism.

Claims16

Dependent claims

A power output apparatus, that outputs power to a drive shaft, said power output apparatus comprising:

an internal combustion engine;
a drive shaft motor that is capable of inputting and outputting power to and from said drive shaft;
a three-shaft-type power input output mechanism connecting with an output shaft of said internal combustion engine, said drive shaft, and a rotating shaft, where settings of power input and output to and from any two shafts among said three shafts automatically specify a setting of power input and output to and from a residual shaft among said three shafts;
a rotating shaft motor that is capable of inputting and outputting power to and from said rotating shaft;
a battery that transmits electric power to and from said drive shaft motor and said rotating shaft motor;
a lubricating oil feed pump that is linked to said output shaft of said internal combustion engine via a damper and is driven by power of said output shaft of said internal combustion engine to feed a supply of lubricating oil to at least a portion of mechanical part of said power output apparatus;
and
a controller that, when a starter switch for starting said power output apparatus is an ON operation and a, predetermined condition for temperature status in said power output apparatus is fulfilled in an operation stop state of said internal combustion engine, controls actuation of said rotating shaft motor to drive said lubricating oil feed pump with the power output to said output shaft of said internal combustion engine via said three-shaft-type power input output mechanism.

5 more elements

A power output apparatus that outputs power to a drive shaft, said power output apparatus comprising:

an internal combustion engine;
a drive shaft motor that is capable of inputting and outputting power to and from said drive shaft;
a three-shaft-type power input output mechanism connecting with an output shaft of said internal combustion engine, said drive shaft, and a rotating shaft, where settings of power input and output to and from any two shafts among said three shafts automatically specify a setting of power input and output to and from a residual shaft among said three shafts;
a rotating shaft motor that is capable of inputting and outputting power to and from said rotating shaft;
a battery that transmits electric power to and from said drive shaft motor and said rotating shaft motor;
a lubricating oil feed pump that is linked to said output shaft of said internal combustion engine via a damper and is driven by power of said output shaft of said internal combustion engine to feed a supply of lubricating oil to at least a portion of mechanical part of said power output apparatus;
and
a controller that, when a condition that said drive shaft motor is outputting power to said drive shaft is fulfilled and a predetermined condition for either one of temperature status in said power output apparatus and revolving status in said power output apparatus is fulfilled in an operation stop state of said internal combustion engine, controls actuation of said rotating shaft motor to drive said lubricating oil feed pump with the power output to said output shaft of said internal combustion engine via said three-shaft-type power input output mechanism.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/725,085Filed 2 Dec 2003 · continuation
Priority: JP 2001-25851328 Aug 2001
Published: US 2004/0108149 A110 Jun 2004
Granted: 21 Feb 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification29 codes

B60W 20/10
Control systems specially adapted for hybrid vehicles: controlling the power contribution of each of the prime movers to meet required power demand
B60K 6/26
Characterised by apparatus, components or means specially adapted for HEVs: characterised by the motors or the generators
B60K 6/445
Series-parallel type: differential gearing distribution type
B60W 10/30
Conjoint control of vehicle sub-units of different type or different function: including control of auxiliary equipment, e.g. air-conditioning…