Dual clutch design for and electro-mechanical automatic transmission having a dual input shaft

• US 6,012,561 A
• Filed: 09/15/1998
• Issued: 01/11/2000
• Est. Priority Date: 09/15/1998
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Chrysler Corporation (Stellantis NV)
• Inventors: Carriere, Donald L., Reed, Richard G. Jr.
• Primary Examiner(s): Lorence, Richard M.
• Application Number:
  US09/153,424
• Time in Patent Office: 483 Days
• Field of Search: 192/48.2, 192/48.7, 192/48.8, 192/48.91, 192/70.27, 192/70.29, 192/40, 192/90, 192/84.6
• US Class Current: 192/48.2
• CPC Class Codes: F16D 2023/123 Clutch actuation by cams, ramps or ball-screw mechanisms
• CPC Class Codes: F16D 21/06 at least two driving shafts or two driven shafts being concentric
• CPC Class Codes: F16D 23/12 Mechanical clutch-actuating mechanisms arranged outside the clutch as such specific for combined clutches F16D21/00; mechanisms specific for synchronisation F16D23/02
• CPC Class Codes: F16D 27/004 with permanent magnets combined with electromagnets
• CPC Class Codes: F16D 28/00 Electrically-actuated clutches arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00
• CPC Class Codes: F16H 3/0915 with coaxial input and output shafts
• CPC Class Codes: F16H 61/32 Electric motors actuators or related electrical control means therefor
• CPC Class Codes: F16H 61/688 with two inputs, e.g. selection of one of two torque-flow paths by clutches

Abstract

A dual clutch system is provided for a transmission having dual input shafts. The dual clutch system includes first and second flywheels as well as first and second friction disk assemblies and first and second pressure plates for pressing against said first and second friction disk assemblies, respectively. The pressure plates are each operatively engaged by an electromechanical clutch actuator.

Claims

1. A transmission having a dual clutch system, comprising:

a first transmission input shaft including a plurality of drive gears mounted thereon;

a second transmission input shaft including a plurality of drive gears mounted thereon, said first and second transmission input shafts being concentric with one another;

a driven shaft having a plurality of gears mounted thereon in meshing engagement with said plurality of drive gears on said first and second transmission input shafts;

a first flywheel adapted to be mounted to an output shaft of an engine;

a first friction disk assembly mounted to said first transmission input shaft;

a first pressure plate adapted to be frictionally engaged with said first friction disk assembly and including a first linkage assembly for disengaging said first pressure plate from frictional engagement with said first friction disk assembly;

a second flywheel mounted to said first flywheel for rotation therewith;

a second friction disk assembly mounted to said second transmission input shaft;

a second pressure plate adapted to be frictionally engaged with said second friction disk assembly and including a second linkage assembly for disengaging said second pressure plate from frictional engagement with said second friction disk assembly.

2. The transmission according to claim 1, wherein said first friction disk assembly includes a central hub adapted to be engaged with the first input shaft of the transmission and said second friction disk assembly includes a central hub adapted to be engaged with the second input shaft of the transmission.

3. The transmission according to claim 1, further comprising a first spring device mounted between said first pressure plate and said second flywheel for biasing said first pressure plate into engagement with said first friction disk assembly.

4. The transmission according to claim 3, further comprising a rear clutch cover disposed adjacent to said second pressure plate and a second spring device mounted between said second pressure plate and said rear clutch cover for biasing said second pressure plate into engagement with said second friction disk assembly.

5. The transmission according to claim 1, wherein said first and second linkage assemblies are driven by electro-mechanical clutch actuators.