Engine start-stop control method and device, vehicle-mounted equipment and storage medium

A control method and engine technology, applied in motor vehicles, hybrid vehicles, transportation and packaging, etc., can solve the problems of high clutch control requirements, inability to achieve control effects, and complex three-motor control, and achieve timely and effective control and guarantee. Control the effect of continuity

Active Publication Date: 2020-09-15
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the three-clutch module including the CO motor in the P2 configuration is complicated, and the requirements for clutch control are relatively high. The power split configuration of the double-motor planetary gear has not been promoted, and the control of the three-motor is relatively complicated.
In addition, due to the changeable working conditions of the whole vehicle, which involves frequent engine start-stop control, the existing engine start-stop control cannot achieve the ideal control effect and realize clear logic control

Method used

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  • Engine start-stop control method and device, vehicle-mounted equipment and storage medium
  • Engine start-stop control method and device, vehicle-mounted equipment and storage medium
  • Engine start-stop control method and device, vehicle-mounted equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 1 This is a flowchart of an engine start-stop control method provided in the first embodiment of the present invention. This embodiment can be applied to the case of controlling the engine start-stop of a hybrid vehicle with a dual-motor hybrid configuration. The method can be started by the engine. The shutdown control device is implemented, which can be implemented in the form of software and / or hardware. It includes the following steps:

[0042] S110: After receiving the serial drive mode request, control the engine to enter the engine drag state and output the serial target engine torque.

[0043] Among them, the serial drive mode request is used to request the entire vehicle drive mode to switch to the serial drive mode, and the serial drive mode request can be issued by the entire vehicle drive mode management module.

[0044] It can be understood that, before the serial drive mode request is received, the drive mode of the entire vehicle may be in a pure electri...

Embodiment 2

[0062] figure 2 This is a flowchart of an engine start-stop control method provided in the second embodiment of the present invention. This embodiment is optimized based on the foregoing embodiment.

[0063] Correspondingly, the method of this embodiment specifically includes:

[0064] The engine start-up is divided into two stages.

[0065] The first stage of engine start: engine tractor control. When the vehicle drive mode control module sends a serial drive mode request, the vehicle controller uses the generator to output positive torque to drag the engine speed above the resonance speed (resonance speed is greater than 500rpm). After the engine completes timing synchronization, The vehicle controller sends a fuel injection enable command to the engine, and gradually increases the engine request torque from 0 to the series target engine torque. After the engine is ignited and combusted and the series target engine torque is output, the engine is considered to be successful, tha...

Embodiment 3

[0076] image 3 This is a structural diagram of an engine start-stop control device provided in the third embodiment of the present invention. This embodiment can be applied to the case of engine start-stop control of a hybrid vehicle with a dual-motor hybrid configuration.

[0077] Such as image 3 As shown, the device includes: an engine tractor state control module 310, an engine operating point adjustment control module 320, and a mode control module 330, where:

[0078] The engine tractor state control module 310 is used to control the engine to enter the engine tractor state and output the series target engine torque after receiving the serial drive mode request;

[0079] The engine operating point adjustment control module 320 is configured to control the engine operating point for adjustment based on the series target engine torque, and control the whole vehicle to be in series drive mode or the engine to enter the engine stop state according to the adjustment result;

[0080] ...

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Abstract

The embodiment of the invention discloses an engine start-stop control method and device, vehicle-mounted equipment and a storage medium. The method comprises the steps that: after a series driving mode request is received, an engine is controlled to enter an engine dragging state, and series target engine torque is output; an engine working point is controlled to be adjusted based on the series target engine torque, and a whole vehicle is controlled to be in a series driving mode or the engine is controlled to enter an engine shutdown state according to an adjustment result; and if the wholevehicle is in the series driving mode or the engine enters the engine shutdown state, a pure electric driving mode request is received to control the whole vehicle to be switched into a pure electricdriving mode. According to the technical schemes of the embodiment of the invention, the start-stop control continuity of the engine is ensured, and the start-stop control of the engine is timely andeffectively completed.

Description

Technical field [0001] The embodiment of the present invention relates to the technical field of new energy vehicle control, in particular to an engine start-stop control method, device, on-board equipment, and storage medium. Background technique [0002] With the advent of the world energy revolution, today when petroleum resources are increasingly scarce, in the face of increasingly stringent fuel consumption regulations, traditional purely internal combustion engine-driven vehicles are increasingly costly and difficult to reduce fuel consumption. Hybrid vehicles have With the assistance of an electric motor, it has great potential in reducing fuel consumption. [0003] At present, the P2 configuration represented by European manufacturers and the dual-motor planetary gear power split configuration represented by Toyota have been mass-produced, and have achieved good fuel consumption performance, which has won the favor of mass consumers. However, the three-clutch module of the...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B60W10/06B60W20/15
CPCB60W10/06B60W20/15B60W2710/0666Y02T10/62
Inventor祝浩徐家良
OwnerCHINA FIRST AUTOMOBILE