Power transmission device

• US 6,634,986 B2
• Filed: 11/01/2001
• Issued: 10/21/2003
• Est. Priority Date: 11/24/2000
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Kima, Yasuo
• Primary Examiner(s): Marmor, Charles A
• Assistant Examiner(s): ABDELNOUR, DENNIS J
• Application Number:
  US09/985,016
• Publication Number:
  US 20020065168A1
• Time in Patent Office: 719 Days
• Field of Search: 477/3, 477/107, 475/5, 475/209, 743/39
• US Class Current: 477/107
• CPC Class Codes: B60K 6/36 characterised by the transmission gearings
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/48 Parallel type
• 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 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• 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 2510/0695 Inertia
• CPC Class Codes: B60W 30/19 Improvement of gear change, e.g. by synchronisation or smoothing gear shift
• CPC Class Codes: F16H 2200/0043 the gear ratios comprising four forward speeds
• CPC Class Codes: F16H 2200/0047 the gear ratios comprising five forward speeds
• CPC Class Codes: F16H 3/006 power being selectively transmitted by either one of the parallel flow paths
• CPC Class Codes: F16H 3/126 using an electric drive
• CPC Class Codes: F16H 3/725 with means to change ratio in the mechanical gearing
• CPC Class Codes: F16H 61/0437 by using electrical signals F16H61/0403 and F16H61/061 take precedence
• CPC Class Codes: F16H 63/502 for smoothing gear shifts
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/903 having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/905 : Combustion engine
• CPC Class Codes: Y10S 903/906 : Motor or generator
• 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
• CPC Class Codes: Y10S 903/946 : Characterized by control of driveline clutch
• CPC Class Codes: Y10S 903/951 : Assembly or relative location of components
• CPC Class Codes: Y10T 74/19284 : Meshing assisters

Abstract

The invention reduces the shift shock of a device equipped with a plurality of prime movers, and provides a power transmission device of a device having a first prime mover (engine) 1 and a second prime mover (motor) 2 as drive sources, which is arranged so that in the process of shifting from the first speed stage to the second speed stage, the increase or decrease in the rotation speed of the first prime mover (engine) 1 is the reverse of the increase or decrease in the rotation speed of the second prime mover (motor) 2. Also, in the process of shifting from a first speed stage to a second speed stage, control is performed so that a torque, which cancels out the inertia torque of one prime mover (engine) 1, is output by the other prime mover (motor) 2.

Claims

1. A power transmission device of a device having a first prime mover and a second prime mover as drive sources, wherein said power transmission device is arranged so that respective inertia torques of the first prime mover and the second prime mover cancel each other out in a process of shifting from a first speed stage to a second speed stage, wherein in said process of shifting from the first speed stage to the second speed stage, an increase or decrease in a rotation speed of said first prime mover is a reverse of an increase or decrease in a rotation speed of said second prime mover.

2. A power transmission device as set forth in claim 1, wherein the shifting from the first speed stage to the second speed stage of said first prime mover and the shifting from the first speed stage to the second speed stage of said second prime mover are carried out substantially simultaneously.

3. A power transmission device as set forth in claim 1, wherein at least one of either said first prime mover or second prime mover is a motor and, in the process of shifting from the first speed stage to the second speed stage, the output torque of said motor is controlled so that the inertia torque of the first prime mover and the inertia torque of the second prime mover cancel each other out before and after the shift.

4. A power transmission device as set forth in claim 3, wherein the shifting from the first speed stage to the second speed stage of said first prime mover and the shifting from the first speed stage to the second speed stage of said second prime mover are carried out substantially simultaneously.

5. A power transmission device as set forth in claim 1, wherein in the process of shifting from said first speed stage to said second speed stage, control is performed so that a torque that cancels out the inertia torque of one of the prime movers is output by the other prime mover.

6. A power transmission device of a device having a first prime mover and a second prime mover as drive sources, wherein said power transmission device is arranged so that the respective inertia torques of the first prime mover and the second prime mover cancel each other out in a process of shifting from a first speed stage to a second speed stage, wherein a motor is the first prime mover and said power transmission device has a planetary gear set with a plurality of rotating elements, and the second prime mover, the motor, and an output shaft, each of which is connected to a respective rotating element of said prime mover, and

wherein in the process of shifting from the first speed stage to the second speed stage, an increase or decrease in a rotation speed of said second prime mover is in a reverse relationship with respect to an increase or decrease in a rotation speed of said motor and an output of said motor is controlled so that the inertia torques of said second prime mover and said motor cancel each other out.

7. A power transmission device of a device having a first prime mover and a second prime mover as drive sources, wherein said power transmission device is arranged so that the respective inertia torques of the first prime mover and the second prime mover cancel each other out in a process of shifting from a first speed stage to a second speed stage, wherein a motor is the first prime mover and said power transmission device is equipped with a planetary gear set, a first transmission part, the second prime mover which is connected to said planetary gear set via said first transmission part, the motor and a second transmission part which are connected to said planetary gear set, and an output shaft which is connected to said first transmission part and said second transmission part, and

wherein said planetary gear set has three rotating elements including a sun gear, a ring gear, and a carrier, and wherein said second transmission part is connected to one of the three rotating elements such that when said one rotating element is fixed, the other two rotating elements rotate in mutually opposite directions, and each of said second prime mover and said motor is connected to one of said other two rotating elements.

8. A power transmission device of a device having a first prime mover and a second prime mover as drive sources, wherein said power transmission device is arranged so that the respective inertia torques of the first prime mover and the second prime mover cancel each other out in a process of shifting from a first speed stage to a second speed stage, wherein said power transmission device is equipped with a planetary gear set, a first transmission part, the second prime mover which is connected to said planetary gear set via said first transmission part, a motor as the first prime mover and a second transmission part which are connected to said planetary gear set, and an output shaft which is connected to said first transmission part and said second transmission part,

wherein said planetary gear set has three rotating elements including a sun gear, ring gear, and a carrier, and said second transmission part is connected to one of the rotating elements such that when said one rotating element is fixed, the other two rotating elements rotate in mutually opposite directions, and each of said second prime mover and said motor is connected to one of said other two rotating elements, and

wherein in the process of shifting from the first speed stage to the second speed stage, said first transmission-part and said second transmission part are controlled so as to be actuated substantially simultaneously and the output of said motor is controlled so that the inertia torques of said second prime mover and said motor cancel each other out.