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Automatic transmission vehicle engine flameout control method and device

A technology of automatic transmission and control method, which is applied in the field of flameout prevention control device and engine flameout prevention control, and can solve problems such as engine flameout easily

Active Publication Date: 2021-06-29
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 flameout control method and device
  • Automatic transmission vehicle engine flameout control method and device

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Embodiment Construction

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

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

[0056] Please refer to figure 1 , figure 2 , figure 1 It is a control logic diagram of the engine flameout prevention control method for an automatic transmission vehicle provided by the present invention; figure 2 for sure figure 1 The control logic diagram for engine demand torque shown in .

[0057] The method for controlling engine flameout prevention for an automat...

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Abstract

The invention discloses an anti-stall control method for an engine of an automatic transmission vehicle, which includes: judging whether the vehicle is in the working condition of quickly stepping on the accelerator after shifting from neutral gear to a forward gear or a reverse gear; if the judging result is yes, then determining the base torque of the engine; When the torque limit request value of the gearbox is greater than the base torque of the engine, the engine ECU normally responds to the torque limit value sent by the TCU; torque value. The method can ensure that under various environmental working conditions, when the automatic transmission vehicle is shifted from neutral gear to D gear or R gear, the vehicle will not stall when the accelerator is quickly stepped on with various openings. The invention also discloses an anti-flame control device for an automatic transmission vehicle engine.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a flameout prevention control method of an engine matched with an automatic transmission. The invention also relates to a flameout prevention control device of an engine matched with an automatic transmission. Background technique [0002] Vehicles currently on the market that match the hydraulic automatic transmission (AT) and the mechanical continuously variable automatic transmission (CVT) can 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 torque limit request to the engine controller (ECU), and the ECU will respond immediately after receiving this request and reduce the torque output to ensure the stability and comfort of starting and prevent Lost speed. However, under the condition that the torque demand value issued by the TC...

Claims

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Application Information

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Patent Type & Authority Patents(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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