Torque transmission device

• US 20040097316A1
• Filed: 07/31/2003
• Published: 05/20/2004
• Est. Priority Date: 07/31/2002
• Status: Active Grant

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Misu, Takahiro
• Granted Patent: US 6,863,633 B2
• Time in Patent Office: Days
• US Class Current: 475/5
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 30/18 Propelling the vehicle
• CPC Class Codes: B60Y 2200/15 Fork lift trucks, Industrial trucks
• CPC Class Codes: F16H 3/58 with sets of orbital gears, each consisting of two or more intermeshing orbital gears
• CPC Class Codes: F16H 3/725 with means to change ratio in the mechanical gearing
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/91 Orbital, e.g. planetary gears
• CPC Class Codes: Y10S 903/919 Stepped shift
• CPC Class Codes: Y10S 903/945 Characterized by control of gearing, e.g. control of transmission ratio

Abstract

A torque transmission device includes an engine, a motor, an output shaft, and a planetary gear mechanism. The engine and the motor generate driving torque, and the output shaft outputs the driving torque. The planetary gear mechanism includes a first rotating element rotating together with the engine, a second rotating element connected to the motor, and a third rotating element connected to the motor. The torque transmission device further includes a primary clutch, a secondary clutch, a primary brake, and a secondary brake. The primary clutch selectively transmits rotation of the second rotating element to the output shaft, and the secondary clutch selectively transmits rotation of the third rotating element to the output shaft. The primary brake selectively stops the rotation of the third rotating element, and the secondary brake selectively stops the rotation of the second rotating element.

Claims

1. A torque transmission device, comprising:

an engine and a motor for generating driving torque;

an output shaft outputting the driving torque;

a planetary gear mechanism including a first rotating element rotating together with the engine, and a second rotating element connected to the motor, and a third rotating element connected to the motor;

a primary clutch selectively transmitting rotation of the second rotating element to the output shaft;

a secondary clutch selectively transmitting rotation of the third rotating element to the output shaft;

a primary brake selectively stopping the rotation of the third rotating element; and

a secondary brake selectively stopping the rotation of the second rotating element.

2. A torque transmission device, according to claim 1, wherein the planetary gear mechanism is a double-pinion type planetary gear mechanism, the first rotating element corresponds to a sun gear, the second rotating element corresponds to a carrier, and the third rotating element corresponds to a ring gear.