Engine torque control method and device for urgent acceleration of automatic gearbox

An engine torque, automatic transmission technology, applied in the direction of engine control, machine/engine, electrical control, etc., can solve problems such as large engine overshoot, speeding or shifting shock, flameout, etc., to reduce overshoot, avoid The impact of shifting gears is large, avoiding the effect of speeding or stalling

Active Publication Date: 2012-01-18
WUHU WANLIYANG TRANSMISSION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the communication delay and the response lag of the engine speed change relative to the torque control, when the above-mentioned engine torque control method is used for rapid acceleration, the output torque of the engine will have a large overshoot, which will cause flying or shifting. Big problem, even flameout problem

Method used

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  • Engine torque control method and device for urgent acceleration of automatic gearbox
  • Engine torque control method and device for urgent acceleration of automatic gearbox
  • Engine torque control method and device for urgent acceleration of automatic gearbox

Examples

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Embodiment 1

[0046] see figure 1 , the present embodiment provides an engine torque control method for rapid acceleration of an automatic transmission, the method specifically includes:

[0047] Step 101: Calculate the acceleration torque required for the engine speed to reach the target speed corresponding to the target gear, and control the output torque of the engine according to the acceleration torque.

[0048] Specifically, the target gear is the current vehicle speed calculated based on the universal characteristics of the engine and the optimal gear of the gearbox under accelerator.

[0049] Step 102: Using a PID controller to perform feedback control on the output torque of the engine to update the aforementioned acceleration torque.

[0050] Step 103: Perform delay compensation for the updated acceleration torque.

[0051] Step 104: Control the output torque of the engine according to the acceleration torque after delay compensation.

[0052] In the embodiment of the present i...

Embodiment 2

[0054] see figure 2 , the present embodiment provides a preferred example of an engine torque control method for rapid acceleration of an automatic transmission, the method specifically includes:

[0055] Step 201: Calculate the acceleration torque required for the engine speed to reach the target speed corresponding to the target gear, and control the output torque of the engine according to the acceleration torque.

[0056] Further, this step includes:

[0057] Step 2011: Obtain the current actual speed of the engine and calculate the target speed of the engine at the target gear. The target gear is the current vehicle speed calculated based on the universal characteristics of the engine and the best gear of the gearbox under the throttle.

[0058]Wherein, the current actual rotational speed of the engine may be acquired by a rotational speed sensor.

[0059] When the target gear is determined, the target speed corresponding to the target gear can be calculated from the c...

Embodiment 3

[0088] see image 3 , the present embodiment provides an engine torque control device for rapid acceleration of an automatic transmission, specifically comprising:

[0089] Calculation module 301, used to calculate the acceleration torque required for the engine speed to reach the target speed corresponding to the target gear;

[0090] A feedback control module 302, configured to use a PID controller to perform feedback control on the output torque of the engine to update the acceleration torque calculated by the calculation module 301;

[0091] A delay compensation module 303, configured to perform delay compensation on the acceleration torque updated by the feedback control module 302; and

[0092] The execution module 304 is configured to control the output torque of the engine according to the acceleration torque calculated by the calculation module 301 and the acceleration torque after delay compensation by the delay compensation module 303 .

[0093] In the embodiment ...

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PUM

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Abstract

The invention discloses an engine torque control method and an engine torque control method device for the urgent acceleration of an automatic gearbox, which belong to the field of automobile engine control. The method comprises the following steps of: calculating an acceleration torque required by a target rotation speed corresponding to a target gear reached by an engine rotation speed, and controlling the output torque of the engine according to the acceleration torque; performing feedback control on the output torque of the engine by using a port identification (PID) controller so as to update the acceleration torque; performing delay compensation on the updated acceleration torque; and controlling the output torque of the engine according to the acceleration torque subjected to delay compensation. The device comprises a computation module, a feedback control module, a delay compensation module and an execution module. By the method and the device, the problem of over modulation when a vehicle which is provided with the automatic gearbox is subjected to urgent acceleration can be solved.

Description

technical field [0001] The invention relates to the field of automobile engine control, in particular to an engine torque control method and device for rapid acceleration of an automatic transmission. Background technique [0002] With the rapid development of electronic technology and automatic control technology, automatic transmissions for automobiles are constantly being pushed to the market by domestic and foreign automobile manufacturers. Vehicles equipped with automatic transmissions have the function of automatic shifting. On the one hand, people can enjoy easy, comfortable and all-round driving pleasure during driving, and on the other hand, they have low fuel consumption and low emission performance. The advantages of these two aspects of automatic transmissions have been gradually recognized by drivers, and the loading rate of automatic transmissions in the market is getting higher and higher, and the scope of use is also wider and wider. [0003] The automatic t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/10
Inventor 倪斌
Owner WUHU WANLIYANG TRANSMISSION CO LTD
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