Protective control device for automatic transmission

A technology of automatic transmission and protection control, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as oil temperature rise, prevent oil temperature from rising again, and prevent oil temperature from rising. , the effect of preventing discomfort
CN103363093BActive Publication Date: 2016-02-10HONDA MOTOR CO LTD
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HONDA MOTOR CO LTD
Publication Date
2016-02-10

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The protection control device of the automatic transmission is provided, which can reliably prevent the oil temperature of the automatic transmission from rising. When the vehicle speed is above the 1st vehicle speed and the oil temperature is above the 1st oil temperature, the gear change unit forcibly upshifts from the current gear, so that the input speed in the automatic transmission can be reduced by upshifting to prevent oil temperature fluctuations. rise. And after the forced upshift is performed, the shift limiting unit restricts the downshift shift based on the automatic shift as well as the driver's operation, so it is possible to prevent a situation where the input rotation speed in the automatic transmission increases due to the downshift, so that the oil temperature rises again . Moreover, when the oil temperature reaches the second oil temperature higher than the first oil temperature and the maximum vehicle speed is above the second vehicle speed higher than the first vehicle speed, the maximum vehicle speed limiting unit limits the maximum vehicle speed to the third vehicle speed, so even at the current Even when the gear is the highest gear and it is not expected to reduce the oil temperature by forced upshifting, it is also possible to prevent the oil temperature from rising by limiting the maximum vehicle speed.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a protective control device for an automatic transmission that lowers the oil temperature by limiting automatic upshifting or downshifting when the oil temperature of the automatic transmission rises. Background technique

[0002] According to the following Patent Document 1, there is known a protective control device for an automatic transmission that automatically upshifts a shift gear when the oil temperature of the automatic transmission rises, and prevents As a result, when the oil temperature drops, the drop is permitted on the condition that predetermined running conditions such as the accelerator opening being below a predetermined value and the vehicle speed being below a predetermined value, or the engine speed being below a predetermined value are satisfied. files.

[0003] [Patent Document 1] Japanese Patent Laid-Open No. 2009-281511

[0004] However, in the protective control device of the above-mentioned...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More