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Automatic transmission vehicle engine anti-flameout control method and device

A technology of automatic transmission and control method, which is applied in the field of engine flameout prevention control and flameout prevention control device, and can solve the problem that the engine is prone to flameout and the like

Active Publication Date: 2019-12-24
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the condition that the torque demand value issued by the TCU is small and the resistance of the engine and transmission is relatively large, the engine is prone to flameout problems.

Method used

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  • Automatic transmission vehicle engine anti-flameout control method and device
  • Automatic transmission vehicle engine anti-flameout control method and device

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Embodiment Construction

[0054] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0055] Aiming at the problem that the existing automatic transmission vehicle is prone to flameout when the vehicle is shifted from neutral gear to D gear or R gear and then stepping on various accelerator pedals quickly, the present invention proposes a method to prevent the vehicle from stalling under this working condition. Anti-stall control method of engine.

[0056] Please refer to figure 1 , figure 2 , figure 1 The control logic diagram of the anti-flame control method for the automatic transmission vehicle engine provided by the present invention; figure 2 to be sure figure 1 The control logic diagram of the engine demand torque shown in .

[0057] The anti-flame control method of the automatic transmission vehicle en...

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Abstract

The invention discloses an automatic transmission vehicle engine anti-flameout control method. The automatic transmission vehicle engine anti-flameout control method comprises the steps that whether avehicle is under a working condition of rapidly stepping on an accelerator from a neutral gear or not after a D gear or an R gear is engaged is judged; if yes, the basic torque of an engine is determined; when the transmission torque limiting request value is greater than the basic torque of the engine, an engine ECU makes a normal response to the torque limiting value sent by a TCU; when the transmission torque limiting request value is less than the basic torque of the engine, the engine ECU ignores the torque limiting value sent by the TCU and makes a response to the basic torque value ofthe engine. The automatic transmission vehicle engine anti-flameout control method can ensure that under various types of environmental conditions, in an automatic transmission vehicle, the D gear orthe R gear is engaged from the neutral gear and then the accelerator at all the opening degrees is stepped on rapidly and the vehicle cannot flame out. The invention further discloses an automatic transmission vehicle engine anti-flameout control device.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an anti-stall control method of an engine matched with an automatic transmission. The invention also relates to an anti-stall control device for an engine matched with an automatic transmission. Background technique [0002] Vehicles currently on the market that match hydraulic automatic transmissions (AT) and mechanical continuously variable automatic transmissions (CVTs) quickly shift from neutral (N gear) to forward gear (D gear) or reverse gear (R gear). Under the condition of stepping on the accelerator, the transmission controller (TCU) will send a limit torque request to the engine controller (ECU), and the ECU will respond immediately after receiving this request, and reduce the torque output to ensure the smoothness and comfort of starting and prevent Speed ​​out of control. However, under the condition that the torque demand value issued by the TCU is small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/101B60W30/02
CPCB60W10/06B60W10/101B60W30/02
Inventor 仇杰王祝李勇林宝生鞠金宝
Owner SAIC MOTOR
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