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Gear change control system of automatic transmission

A technology of automatic transmission and control system, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., can solve problems such as difficulty in moving shift protrusions with good efficiency

Inactive Publication Date: 2013-02-20
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case where the interval L1 between the pair of claws 121 is increased as in JP-A-2001-304411, the force P1 pushing the claws 121 in the shifting direction is reduced, and it becomes difficult to move between the claws 121 with good efficiency. Shift projection connected to claw 121 in shift direction

Method used

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  • Gear change control system of automatic transmission
  • Gear change control system of automatic transmission
  • Gear change control system of automatic transmission

Examples

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Embodiment Construction

[0045] The following will combine figure 1 and 2 A shift control system of an automatic transmission as an embodiment of the present invention will be described.

[0046] like figure 1 As shown, the automatic transmission 1 is a double clutch automatic transmission and comprises two clutches 2, 3, two main shafts 4, 5 and two layshafts 6, 7 arranged concentrically with each other. Power is transmitted to the first main shaft 4 from the driving force transmission shaft 9 transmitting the driving force from the engine 8 via the first clutch 2 , and power is transmitted from the driving force transmission shaft 9 to the second main shaft 5 via the second clutch 3 . It should be noted that the two clutches are controlled for engagement and disengagement by control circuits not shown, such as hydraulic, electric or mechanical control circuits.

[0047] The first secondary shaft 6 and the second secondary shaft 7 are spaced apart from each other such that their axes are paralle...

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PUM

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Abstract

A gear change control system of an automatic transmission, includes: a shift member, including a shaft portion having a selection axis oriented in a selecting direction, and a pair of arm portions formed on the shaft portion and projecting therefrom; shift rail members, having rail shaft portions, and having a shift axis oriented in a shifting direction; shift fork portions, formed on the rail shaft portions; shift lug members, formed on the rail shaft portions and including pillar-shaped portions. The arm portions swing about the selection axis to apply a pressure in the shifting direction from one side of the pillar-shaped portion by one of the arm portions to cause the shift fork portion to make a shifting operation, and to apply a pressure in the shifting direction from the other side of the pillar-shaped portion by the other arm portion to make a shift withdrawing operation.

Description

technical field [0001] The present invention relates to a shift control system of an automatic transmission provided on a drive train of a vehicle. Background technique [0002] There is a mechanical automatic transmission that does not use a torque converter as a transmission provided on a drive train of a vehicle. [0003] The mechanical automatic transmission performs shift control (selection and execution of shifting) and the engagement and disengagement of a clutch without requiring a torque converter. In a manual transmission, the clutch is engaged and disengaged by an actuator. For example, as shown in FIGS. 8A and 8B , the shift control system of an automatic transmission includes a shift shaft 100 movable in a shift direction sf and a selection direction se, respectively formed on a plurality of shift rails provided in the selection direction se. On a part of the shift rail 110, a shift protrusion 120 protruding radially outward, and shift forks 131, 132, 133 integ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/20
CPCF16H63/20F16H61/32F16H2063/025F16H2061/2892F16H2063/208F16H61/688F16H2063/3083F16H2063/3086Y10T74/20104Y10T74/19279Y10T74/20177F16H63/30F16H63/02
Inventor 新谷昌则藤本将司
Owner MITSUBISHI MOTORS CORP