Toyota Jidosha Kabushiki Kaisha

Keijiro Oshima

Hiroshi Hata

Masatoshi Adachi

Ryuji Ibaraki

Masahiro Kojima

Haruhisa Suzuki

Koichi Kondo

Kouichi Kondou

A hybrid vehicle may run with only the power from a motor MG, while an engine is at a stop. In this state, the control procedure drives a motor MGto 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 MG, an observed temperature of the motor MG, an observed revolving speed of the motor MG, and an observed revolving speed of the motor MGis 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.

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

An oil pressure generator 20 includes a drive gear 30, a driven gear 32, and a crescent 34, which constitute a gear pump unit, as well as one-way clutches 36 and 38 that respectively interlock with two rotating shafts 42 and 46 when the rotating shafts 42 and 46 rotate in an identical direction relative to the drive gear 30. In case that both the rotating shafts 42 and 46 rotate in the interlocking direction, the corresponding one-way clutch interlocks with the rotating shaft having a greater revolving speed, thereby driving the drive gear 30. This structure enables the oil pressure generator 20 to produce an oil pressure through rotation of the rotating shaft having a greater revolving speed out of the two rotating shafts 42 and 46.

Oil pressure generator having at least two coaxial rotating power

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Toyota, Japan

Keijiro Oshima