Automatic transmission control system

Abstract

The automatic transmission control device of the present invention detects the accelerator operation amount generated by the driver's stepping on the accelerator pedal, detects the engine speed corresponding to the detected accelerator operation amount, and has the following functions: the accelerator operation amount and the engine speed According to the specified speed change table, the transmission is automatically accelerated or decelerated according to the speed change table. The driver can know the switching point of the speed change table according to the stepping operation of the accelerator pedal, which can prevent unnecessary deceleration. Or the sluggishness of acceleration and the ability to drive efficiently.

Description

technical field [0001] The present invention relates to an automatic shifting control device for automatically controlling a transmission according to a traveling state detected while a vehicle is running. An automatic transmission control device that prevents the occurrence of unnecessary deceleration or delays in acceleration and enables efficient driving by switching points. Background technique [0002] In the conventional automatic transmission control device, each gear stage of the transmission has a shift map defined by the accelerator operation amount and the engine speed (or vehicle speed), and the shift point is determined based on the shift map. The speed change map sets the engine speed (or vehicle speed) so that it is easy to decelerate and difficult to accelerate when the driver's accelerator operation amount is large, or conversely, it is difficult to decelerate and easy to accelerate when the accelerator operation amount is sma...

AI Technical Summary

Problems solved by technology

[0004] However, in such a conventional automatic transmission control device, since an upslope is estimated to be a small increase in the engine speed relative to a predetermined accelerator operation amount, and a shift table set for upslope travel is selected, the actual The vehicle on board starts to drive on an uphill road, and then determines that it is an uphill and selects a shift map to slow down the deceleration time, and there is a situation where the driving force of the engine is insufficient

In addition, the length and gradient of the uphill road cannot be known in advance. For example, although the current gear stage is sufficient to go uphill, it is often slowed down.

[0005] In addition, in large commercial vehicles such as trucks and buses, since the vehicle is heavy and the driving force of the engine is insufficient, the driver often pushes the accelerator pedal to the bottom and travels. Even when driving on a flat road, Unnecessary deceleration often occurs automatically, or sluggish acceleration occurs

Therefore, there is a case where the driver does not realize the driving at a high engine speed, and the economical driving may not be possible.

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