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Control device for automatic transmission

A technology for automatic transmissions and control devices, which is applied in transmission control, transmission parts, multi-ratio transmissions, etc. It can solve problems such as oil pump discharge loss, lubricating oil stirring resistance and dragging resistance, and prevent friction coefficient changes. , Suppress shock, suppress the effect of speed change shock

Pending Publication Date: 2021-03-05
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the heat generated by the friction plate varies depending on the driving state of the vehicle. If the lubricating oil is supplied based on the state with the highest heat generation, agitation resistance due to the lubricating oil in the friction engagement elements and Drag resistance, discharge loss of oil pump

Method used

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  • Control device for automatic transmission
  • Control device for automatic transmission
  • Control device for automatic transmission

Examples

Experimental program
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Embodiment Construction

[0057] Hereinafter, the specific content of the automatic transmission 10 according to the embodiment of the present invention will be described.

[0058] figure 1 It is a schematic diagram showing the structure of the automatic transmission 10 of this embodiment. The automatic transmission 10 is connected to a driving source such as an engine without passing through a fluid transmission device such as a torque converter. The automatic transmission 10 has an input shaft 12 connected to a driving source and arranged on the driving source side (left side in the figure) and an output shaft 13 arranged on the opposite side of the driving source (right side in the drawing) in a transmission case 11 . The automatic transmission 10 is a vertical type for a front engine rear drive (Front Engine Rear Drive) vehicle in which an input shaft 12 and an output shaft 13 are arranged on the same axis.

[0059] On the axes of the input shaft 12 and the output shaft 13, the first, second, thi...

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Abstract

The present disclosure provides a control device for an automatic transmission, capable of controlling supply of lubricant to a friction engagement element of the automatic transmission as necessary according to a traveling state of a vehicle, and realizing a smooth gear change. The control device for an automatic transmission (10) is provided with friction engagement elements (BR1, BR2, CL1 - CL3), a shift control unit (210) for controlling shift by feeding and discharging hydraulic oil for forming a shift gear to the friction engagement elements (BR1, BR2, CL1 - CL3), a lubricating oil supply control unit (220) for controlling the amount of lubricating oil supplied to the friction engagement elements (BR1, BR2, CL1 - CL3) in accordance with the operating state of a vehicle, and a controlunit (200) that performs control such that the shift operation and the switching operation of the supply amount of lubricating oil do not coincide with each other.

Description

technical field [0001] The invention relates to a control device of an automatic transmission mounted on a vehicle such as an automobile, and particularly belongs to the technical field of a lubrication structure of a friction engagement element of an automatic transmission. Background technique [0002] As is well known, an automatic transmission mounted on a vehicle has a plurality of friction engagement elements for switching power transmission paths and a hydraulic pressure control device including a plurality of solenoid valves (solenoid valves) for controlling the supply and discharge of operating oil to these friction engagement elements. The operation of the solenoid valve is controlled by a signal from the control unit, thereby realizing a shift speed corresponding to the running state of the vehicle. [0003] When the friction engagement elements of such an automatic transmission change gears from the disengaged state to the engaged state, there is a difference bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04F16H61/00F16D25/12
CPCF16H57/0446F16H57/0473F16H61/0025F16D25/123F16D25/14F16H2061/0037F16H57/043F16H57/0435F16H57/0441F16H2061/0046F16H2200/006F16H2200/2012F16H2200/2043F16H57/0409F16H61/04F16H2061/0455F16H57/0439F16H57/01F16H59/72F16H61/4165F16H2057/014F16H2059/725
Inventor 木下友和原翔太郎安部祥司白砂俊明
Owner MAZDA MOTOR CORP
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