Method for controlling engine stop based on gear position of automatic transmission vehicle

A vehicle controller and engine technology, applied in the direction of control devices, vehicle components, driver input parameters, etc., can solve complex, automatic transmission vehicle control engine shutdown and other problems

Active Publication Date: 2017-01-18
ZHEJIANG GEELY HOLDING (GROUP) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For automatic transmission vehicles, the ECU not only needs to collect relevant signals of the vehicle and engine to judge engine shutdown, but also needs to take into account relevant information such as oil pressure and gear selection in automatic transmission transmissions, which is more complicated than manual transmissions.
[0005] Throughout the control process, the ECU plays a vital role in judging the driver's intention, and its accuracy directly affects the driver's experience and safety. However, there is no such thing as automatic transmission vehicles in the prior art. controlled engine shutdown

Method used

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  • Method for controlling engine stop based on gear position of automatic transmission vehicle
  • Method for controlling engine stop based on gear position of automatic transmission vehicle

Examples

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Embodiment Construction

[0021] figure 1 It is a schematic flow chart according to an embodiment of the present invention. The method for controlling engine shutdown based on the gear position of an automatic transmission vehicle in this embodiment includes:

[0022] Step A: detecting the gear signal;

[0023] Step B: According to the different gear signals, different control strategies are used to control the engine shutdown, wherein,

[0024] When the gear position signal indicates that the vehicle transmission is in the D / M gear, at least the conditions that the vehicle speed is lower than the first predetermined value and the brake signal is turned on are met, and the engine is controlled to stop.

[0025] Consider the driving state of the vehicle in the forward gear D / M gear of the automatic transmission vehicle. When the vehicle speed is lower than the first predetermined value and the brake light is on, it is considered that the engine can be controlled to stop to achieve the effect of saving ...

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Abstract

The invention provides a method for controlling engine stop based on gears of an automatic-control vehicle. The method comprises the following steps: step A, detecting gear signals; step B, controlling engine stop by adopting different control strategies according to different gear signals, wherein when the gear signal indicates that a vehicle transmission is in a D / M gear state, engine stop is controlled when at least the following conditions are met: the speed of the vehicle is lower than a first preset value, and a brake signal is started. The invention aims at providing the method for performing engine stop control on the automatic-control vehicle.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for controlling engine shutdown based on the gear position of an automatic transmission vehicle. Background technique [0002] Comparing the engine start and stop of automatic transmission vehicles with the engine start and stop of manual transmission vehicles, there is a big difference in the realization of functions. The start and stop of the automatic transmission requires the cooperation of an automatic transmission control unit (TCU), an electronic control unit (ECU, Electronic Control Unit) and an electronic parking system (EPB, Electric Parking Brake). Its security issues especially need to be carefully considered. [0003] Manual transmission vehicles mainly use the gear switch, clutch position switch, brake pedal signal, vehicle speed signal, etc. to determine whether the current state meets the driver's engine shutdown requirements, and it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W10/04B60W10/101
CPCB60W10/06B60W10/11B60W30/18018B60W2520/10B60W2540/12B60W2540/16
Inventor 任颖睦金吉刚杨安志吴成明冯擎峰
Owner ZHEJIANG GEELY HOLDING (GROUP) CO LTD
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