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Apparatus for controlling automatic transmission

A transmission, main transmission technology, applied in the direction of transmission, transmission control, elements with teeth, etc., to achieve the effect of eliminating the impact situation

Inactive Publication Date: 2008-06-11
NISSAN DIESEL MOTOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, when the vehicle is parked from normal driving, there are many instances where the gear adapter shifts into a high gear
Correspondingly, when the vehicle is started, there is a high possibility that the gear adapter must change from high gear to low gear without the main gear, the main shaft, and the gear adapter gear rotating, so the above-mentioned problem is easy to happen

Method used

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  • Apparatus for controlling automatic transmission
  • Apparatus for controlling automatic transmission
  • Apparatus for controlling automatic transmission

Examples

Experimental program
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Embodiment Construction

[0056] FIG. 1 shows an automatic transmission control device according to a first embodiment of the present invention.

[0057] The engine 10 and the gear transmission 14 (hereinafter referred to as "transmission") are installed in series via a friction clutch 12 (hereinafter referred to as "clutch") to form a vehicle running system. Moreover, the engine 10 is equipped with a fuel injection pump 18 capable of controlling the fuel injection amount through the engine control unit 16 combined with a microcomputer, and the engine 10 also has an engine speed sensor 20 for detecting the rotational speed Ne of the engine. The clutch 12 has an output shaft of a clutch pusher 22 connected thereto as a driving means of the clutch, while a clutch stroke sensor 24 for detecting the clutch stroke L is mounted to the clutch.

[0058] On the other hand, on the transmission 14 is mounted an actuator 30 (transmission shifting device) that shifts gears using a working fluid through a solenoid v...

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Abstract

In an automatic transmission having a clutch and a gear transmission, when it is determined that a driver has an intention to stop, the clutch is disengaged and the gear transmission is shifted to a neutral position. Thereafter, the clutch maintains its disengaged state, and when the accelerator opening amount is greater than or equal to a predetermined value, the geared transmission shifts to a gear position according to the vehicle running speed and engages the clutch. In the case of the driver's intention to decelerate the vehicle, when the engine is determined to be idle and the vehicle speed is detected to be less than a predetermined value, shifting of the geared transmission to its neutral position occurs. Whether the engine is idle or not is determined by the amount of fuel injected. In a multi-stage transmission in which the split-shift auxiliary transmission is connected to the main transmission, and the change of the auxiliary transmission occurs when the main transmission is held in its neutral position, during the vehicle stop, if the change of the auxiliary transmission occurs at the predetermined At this point, a determination is made that a bump situation has occurred in the auxiliary transmission and a gear change through the main transmission is initiated.

Description

[0001] This application is a divisional application of the following application: [0002] International filing date of the original application: October 21, 2003 [0003] Application number of the original application: 200380101728.3 (International application number: PCT / JP2003 / 013445) [0004] Title of invention of the original application: Control device for automatic transmission technical field [0005] The present invention relates to a control device of a gear-type automatic transmission, and more particularly, to an improvement in response speed of a clutch-equipped automatic transmission. Moreover, the present invention also relates to a technique for smooth parking during idle control. In addition, the present invention also particularly relates to a technique for eliminating a bump situation of a synchromesh mechanism of an auxiliary transmission in a gear change control device of a multi-stage transmission in which the auxiliary transmission is connected to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/10F16H61/08F16H61/02
CPCF16H37/043
Inventor 北村俊夫市川雄一林哲久冈本勲矶边修
Owner NISSAN DIESEL MOTOR CO