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Idle speed control method, device, vehicle and storage medium

An idle speed control and vehicle technology, applied in the fields of devices, vehicles and storage media, and idle speed control methods, can solve the problems of inability to diagnose automobile monitoring items, inability to reduce the speed of generators, etc.

Active Publication Date: 2022-05-27
上海元城汽车技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, traditional internal combustion engine vehicles directly provide vehicle power through the engine. When the vehicle stops and the accelerator pedal is released, the EMS will directly control the engine speed to decrease and enter the idling condition. However, for electric vehicles equipped with range extenders, it will When the electric energy of the vehicle is insufficient, the engine and generator in the range extender jointly provide power for the battery of the vehicle to ensure the power of the vehicle. At this time, the vehicle speed and accelerator are unbound from the engine in the range extender. The speed of the generator cannot be reduced to enter the idling condition when the throttle is used, so the monitoring item diagnosis of the car cannot be performed

Method used

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  • Idle speed control method, device, vehicle and storage medium
  • Idle speed control method, device, vehicle and storage medium
  • Idle speed control method, device, vehicle and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 This is a flowchart of an idle speed control method provided in Embodiment 1 of the present invention. This embodiment can be applied to an electric vehicle equipped with a range extender. The speed of the engine enters the idling condition, so it is impossible to diagnose the monitoring item of the vehicle, but the application scenario is not limited to this. The idle speed control method provided in this embodiment may be executed by the idle speed control device provided in this embodiment of the present invention, and the device may be implemented in software and / or hardware, and integrated in a vehicle that executes the method, and the vehicle may be configured with Electric cars with range extenders.

[0028] Specifically, refer to figure 1 , the method may include the following steps:

[0029] S110. Detect the current running state of the vehicle according to the idle speed request of the vehicle for which the monitoring item needs to be diagnosed.

...

Embodiment 2

[0051] figure 2 This is a flowchart of an idle speed control method provided in Embodiment 2 of the present invention, and this embodiment is optimized on the basis of the foregoing embodiment. Specifically, as figure 2 As shown, this embodiment provides a detailed explanation for the specific process of generating the idle speed request of the vehicle and the range extender exiting the idle speed condition.

[0052] optional, as in figure 2 As shown, the idle speed control method provided by this embodiment may include the following steps:

[0053] S210, if the parameters related to the monitoring item of the vehicle meet the preset monitoring item diagnostic condition, generate an idle speed request of the vehicle.

[0054] Specifically, the relevant parameters of the monitoring items of the vehicle can be detected by the VCU. When the relevant parameters of the monitoring items of the vehicle meet the preset diagnostic conditions of the monitoring items, the EMS will ...

Embodiment 3

[0085] image 3 This is a flowchart of an idle speed control method provided in Embodiment 3 of the present invention, and this embodiment is optimized on the basis of the foregoing embodiment. Specifically, as image 3 As shown, this embodiment provides a detailed explanation of the specific process of performing the diagnosis of the target monitoring item pointed to by the monitoring item diagnosis condition.

[0086] optional, as in image 3 As shown, the idle speed control method provided by this embodiment may include the following steps:

[0087] S310 , if the parameters related to the monitoring items of the vehicle meet the preset monitoring item diagnostic conditions, generate an idle speed request of the vehicle.

[0088] S320: Detect the running state of the vehicle at the current moment according to the idle speed request of the vehicle.

[0089] S330 , if the current operating state satisfies a preset idle speed entry condition, control the range extender of t...

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PUM

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Abstract

The invention discloses an idle speed control method, device, vehicle and storage medium. Detect the current running state of the vehicle according to the idle speed request of the vehicle that needs to be diagnosed by the monitoring item; if the current running state meets the preset idle speed entry condition, control the range extender of the vehicle to enter the idle speed working state. The technical solution of the embodiment of the present invention solves the problem that the vehicle equipped with a range extender cannot enter the idling condition, and the vehicle cannot be diagnosed with monitoring items, so that the vehicle equipped with a range extender can only pass through the vehicle. The idle speed request is used to detect the current running state of the vehicle, and the range extender can be automatically controlled to jump from the current running state to the idle speed state, and the diagnostic operation of the monitoring items is performed to meet the requirements of the national emission regulations for the monitoring items.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle control, and in particular, to an idle speed control method, device, vehicle, and storage medium. Background technique [0002] According to the requirements of "Light Vehicle Pollutant Emission Limits and Measurement Methods (China Phase VI)", the monitoring and diagnosis of the catalytic converter and the monitoring and diagnosis of the crankcase ventilation (Positive Crankcase Ventilation, PCV) system must be carried out for the models with fuel engines. [0003] Without adding additional components, the Engine Management System (EMS) usually diagnoses the monitoring items of the vehicle under idling conditions, such as the monitoring and diagnosis of the catalytic converter and the monitoring and diagnosis of the PCV system. [0004] At present, traditional internal combustion engine vehicles directly provide vehicle power through the engine. When the vehicle stops and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W20/10B60W10/06B60W10/08B60W2710/0666B60W2710/081Y02T10/62
Inventor 杜月鑫陈领平戴西槐熊华锋夏广范邵新峰赵兵牛胜福
Owner 上海元城汽车技术有限公司