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Engine starting control method and device, vehicle and storage medium

A control method and engine technology, applied in the direction of engine starting, engine motor starting, engine components, etc., can solve the problems of large power battery power, generator torque, consumption, etc., and achieve the effect of improving performance

Pending Publication Date: 2022-08-02
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to consider the NVH (noise, vibration and harshness) when starting, it is generally necessary to quickly drag the engine to a higher speed (beyond the upper limit of the engine resonance speed), which requires more energy consumption than the normal starting speed. Great battery power and generator torque
If the vehicle is started at a standstill, since the drive motor does not share the power of the power battery with the generator, the power of the power battery is completely used for starting, and the starting effect of the vehicle is relatively good, but when the vehicle is driving or in winter When the discharge of the ion power battery drops or the capacity of the generator is limited, how to choose the starting method is a difficult problem for the hybrid power of the dual-motor configuration

Method used

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  • Engine starting control method and device, vehicle and storage medium
  • Engine starting control method and device, vehicle and storage medium
  • Engine starting control method and device, vehicle and storage medium

Examples

Experimental program
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Embodiment 1

[0061] figure 1 The first embodiment of the present invention provides a flowchart of an engine start control method. This embodiment can be applied to the situation of controlling the engine start of a dual-motor hybrid power. The method can be executed by an engine start control device. The engine start control device may be implemented in the form of hardware and / or software, and the engine start control device may be configured in the vehicle. like figure 1 As shown, the method includes:

[0062] S110 , query the relationship table between the temperature, the starting torque and the starting power according to the engine water temperature, and obtain the starting torque threshold value and the starting power threshold value.

[0063] Among them, the starting torque is the torque provided by the power battery and / or the generator when the engine reaches the starting condition, and the starting power is the power when the starting torque is provided by the power battery a...

Embodiment 2

[0094] figure 2This is a flowchart of an engine starting control method provided in Embodiment 2 of the present invention, and this embodiment is a refinement of the above-mentioned embodiment. like figure 2 As shown, the method includes:

[0095] S210. Obtain the engine water temperature.

[0096] In this embodiment, the starting torque and starting power are related to the engine water temperature. Under different engine water temperature conditions, the starting torque and starting power are different. You can use the sensor to obtain the engine water temperature by setting the temperature sensor, etc.

[0097] Optionally, the engine water temperature is close to the ambient temperature around the engine, and the collected ambient temperature can be used to approximate the engine water temperature.

[0098] S220. Determine the target temperature that is closest to the engine water temperature in the relationship table between temperature and starting torque and starti...

Embodiment 3

[0122] image 3 This is a schematic structural diagram of an engine starting control device provided in Embodiment 3 of the present invention. like image 3 As shown, the apparatus includes: a starting torque threshold value and starting power threshold value acquisition module 310 , a starting mode determination module 320 and a starting speed control module 330 .

[0123] The starting torque threshold value and starting power threshold value acquisition module 310 is used to query the relationship table between temperature, starting torque and starting power according to the engine water temperature, and obtain the starting torque threshold value and starting power threshold value .

[0124] Optionally, the relationship table between temperature and starting torque and starting power is generated by testing the relationship between temperature and starting torque and starting power of the engine.

[0125] Optionally, the starting torque threshold value and starting power ...

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Abstract

The invention discloses an engine start-up control method and device, a vehicle and a storage medium, and the method comprises the steps: querying a relation table of temperature, start-up torque and start-up power according to the water temperature of an engine, and obtaining a start-up torque threshold value and a start-up power threshold value; determining a starting mode of the engine according to the starting torque threshold value and the starting power threshold value; and in response to the start-up request, the start-up rotating speed of the engine is determined according to the start-up mode, and the engine is controlled to start up according to the start-up rotating speed. According to the engine starting control method, whether the capacity of the power battery or the generator is sufficient or not is determined by looking up the table, when the capacity is sufficient, the high-rotating-speed starting mode is used, the whole vehicle has the good NVH performance, and when the capacity is insufficient, the low-rotating-speed starting mode is used, so that the vehicle can be started successfully.

Description

technical field [0001] The present invention relates to the technical field of automobiles, and in particular, to an engine starting control method, device, vehicle and storage medium. Background technique [0002] For a two-motor hybrid vehicle, the vehicle system typically uses a generator to start the engine. In order to consider the NVH (noise, vibration and harshness) when starting the engine, it is generally necessary to quickly drag the engine to a higher speed (exceeding the upper limit of the engine resonance speed), which requires consumption compared with the normal starting speed. Great power battery power and generator torque. If the vehicle is started when the vehicle is stationary, since the driving motor does not share the power of the power battery with the generator, the power of the power battery is completely used for starting the vehicle, and the starting effect of the whole vehicle is relatively good. When the discharge of the ion power battery decrea...

Claims

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Application Information

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IPC IPC(8): F02N11/08
CPCF02N11/08F02N2200/042F02N2200/041F02N2300/102F02N2300/2002Y02T10/62
Inventor 尹建坤马艳红李川刘建康
Owner CHINA FIRST AUTOMOBILE