Vehicle drive device

Patent metadata

Field	Value
Publication number	US-10267218-B2
Application number	US-201715706075-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	Nov 4, 2011
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A vehicle drive includes a speed change mechanism connected to a rotary electric machine; an output member connected to the speed change mechanism and wheels; an engagement device changes a state of engagement between an input member connected to an engine and the speed change mechanism; a hydraulic pump driven by the engine or the rotary electric machine; a first pressure control device that controls pressure supplied from the pump and supplies the pressure to the speed change mechanism; a second, separate hydraulic pressure control device that controls the pressure supplied from the pump and supplies the pressure to the engagement device; and a case that houses the rotary electric machine, speed change mechanism, engagement device, and pump. At least the engagement device is housed in a space formed by the case, and the second hydraulic pressure control device is provided at a part of the case forming the space.

First claim

What is claimed is:

1. A vehicle drive device comprising:
an input shaft drivingly connected to an internal combustion engine;
a rotary electric machine;
a transmission drivingly connected to the rotary electric machine and configured to change a speed ratio between the rotary electric machine and an output shaft;
the output shaft being drivingly connected between the transmission and wheels;
an engagement coupling configured to change a state of engagement between the input shaft and the transmission;
a first hydraulic pressure control valve that supplies hydraulic pressure to the transmission;
a second hydraulic pressure control valve that is provided separately from the first hydraulic pressure control valve, and that supplies hydraulic pressure to the engagement coupling;
a first case portion that houses the rotary electric machine and the engagement coupling;
a second case portion that houses the transmission; wherein
the first hydraulic pressure control valve is provided at a lower portion of the second case portion, and
the second hydraulic pressure control valve is provided at a lower portion of the first case portion.

Assignees

• Aisin Aw Co
• Toyota Motor Co Ltd

Inventors

• Iwase Mikio
• Suyama Daiki
• Jinnai Naoya
• Wada Kensuke
• Inoue Yuji
• Ideshio Yukihiko

Classifications

• F16D2048/0287

  Hydraulic circuits combining clutch actuation and other hydraulic systems · CPC title

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D2048/0209

  characterised by fluid valves having control pistons, e.g. spools · CPC title

• F16D48/02

  Control by fluid pressure · CPC title

• F16D33/02

  controlled by changing the flow of the liquid in the working circuit, while maintaining a completely filled working circuit · CPC title