Controller for automatic speed changer
A technology of automatic transmission and control device, which is applied to the improvement of response speed, the impact situation of synchronous meshing mechanism, and the smooth parking field, so as to achieve the effect of eliminating the impact situation
Active Publication Date: 2005-12-07
NISSAN DIESEL MOTOR CO
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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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Embodiment Construction
[0052] figure 1 The automatic transmission control device according to the first embodiment of the present invention is shown.
[0053] The engine 10 and the gear type 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 travel system. Moreover, the engine 10 is equipped with a fuel injection pump 18 which can control the fuel injection amount through the engine control unit 16 combined with a microcomputer. The engine 10 also has an engine speed sensor 20 for detecting the engine rotation speed Ne. The clutch 12 has an output shaft of a clutch propeller 22 connected to it as a driving device of the clutch, and a clutch stroke sensor 24 for detecting the clutch stroke L is mounted on the clutch.
[0054] On the other hand, an actuator 30 (transmission shifting device) is installed on the transmission 14. The actuator 30 uses a working fluid to switch gears through a so...
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In an automatic speed changer having a clutch and a gear-type speed changer, when a driver is determined that he / she has an intension to stop a vehicle, the clutch is disengaged and the gear-type speed changer is shifted to a neutral position. After that the clutch is held in a disengaged state, and when an accelerator opening is more than a predetermined value, the gear-type speed changer is shifted to a speed stage corresponding to a vehicle speed so as to engage the clutch. When the conditions that the driver has an intension to decelerate, an engine is determined that it is in an idle-up state, and a vehicle speed is less than a predetermined value are satisfied, the gear-type speed changer is shifted to the neutral position. Whether the engine is in the idle-up state or not is determined by the amount of fuel injection. In a multiple stage speed changer where a range-type auxiliary speed changer is connected to the output side of a main speed changer and the speed change of the auxiliary transmission is performed when the main speed changer is in an neutral state, when speed change operation of the auxiliary speed changer is not completed within a predetermined time in a vehicle stop state, the auxiliary speed changer is determined that it has a butting state, and gear engaging operation of the main speed changer is started.
Description
Technical field [0001] The present invention relates to a control device of a gear-type automatic transmission, and more particularly to an improvement in the response speed of an automatic transmission equipped with a clutch. Moreover, the present invention also relates to a technique for smoothly stopping during idling control. In addition, the present invention particularly relates to a technique for eliminating the collision of the synchromesh mechanism of the auxiliary transmission in the gear change control device of the multi-speed transmission in which the auxiliary transmission is connected to the output side of the main transmission. Background technique [0002] In recent years, a mechanical automatic transmission has been applied, which automatically changes gears according to operating conditions by applying electronic technology to control friction clutches and gear transmissions. In a mechanical automatic transmission, since there is ...
Claims
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IPC IPC(8): F16H61/02
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