Multi-gear hybrid power system control method capable of reducing power change impacting

A technology of a hybrid power system and a control method, which is applied in the field of multi-speed hybrid power system control for improving the impact of power changes, can solve problems such as affecting drivability, vehicle frustration, lack of power, etc., so as to improve ride comfort and fuel economy. , the effect of improving ride comfort

Inactive Publication Date: 2020-11-24
DONGFENG MOTOR CORP HUBEI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing multi-mode hybrid power transmission system can realize multiple operating modes, it ignores the power switching between different operating modes and the impact on ride comfort and fuel economy due to power interruption during the shift operation. Problems, such as the multi-mode hybrid power transmission system is switched from the drive motor to the first gear of the engine. In this process, due to the direct switching of the power source, there will be no power at the moment of switching, which will cause the vehicle to feel frustrated, affect the drivability and also cause the vehicle to fail. NVH (NVH: Noise, Vibration, Harshness) problems bring complaints from customers; or the power source is switched from the first gear of the engine to the second gear of the engine. During this process, due to the separation and combination of the clutch, the vehicle will instantly lose power, which will lead to Vehicle stuttering

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-gear hybrid power system control method capable of reducing power change impacting
  • Multi-gear hybrid power system control method capable of reducing power change impacting
  • Multi-gear hybrid power system control method capable of reducing power change impacting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] pass below Figure 1 ~ Figure 3 As well as listing some optional embodiments of the present invention, the technical solutions (including preferred technical solutions) of the present invention are further described in detail. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] The invention discloses a control method for a multi-speed hybrid power system that improves the impact of power changes. 1 When -δ and the throttle opening ≤ β and other signals), the total torque T remains constant, and the engine power is connected to couple the engine power with the driving motor power, and the engine torque T 1 ε to reach the total torque T 1 After that, the driving motor is disconnected, and the eng...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a multi-gear hybrid power system control method capable of reducing power change impacting. When the conditions of the speed and the like of a hybrid electric vehicle reach thepower switching or gear shifting condition, an extra power source intervenes in advance and is coupled with an original power source, when the power source power obtained after switching reaches a preset value, power is switched, vehicle power change smoothness is achieved, and the problems of vehicle impacting and NVH brought by power changes are avoided.

Description

technical field [0001] The invention belongs to the technical field of automobile hybrid power systems, and specifically discloses a control method for a multi-speed hybrid power system that improves the impact of power changes. Background technique [0002] At present, with the popularity of hybrid vehicles, multi-mode hybrid powertrains are widely used. Although the existing multi-mode hybrid power transmission system can realize multiple operating modes, it ignores the power switching between different operating modes and the impact on ride comfort and fuel economy due to power interruption during the shift operation. Problems, such as the multi-mode hybrid power transmission system is switched from the drive motor to the first gear of the engine. In this process, due to the direct switching of the power source, there will be no power at the moment of switching, which will cause the vehicle to feel frustrated, affect the drivability and also cause the vehicle to fail NVH...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/40B60W20/15
CPCB60W20/40B60W2510/0604B60W2510/0657B60W2510/083B60W2520/10B60W2520/105B60W20/15
Inventor 薛龙聂少文余秋石严军雷君
Owner DONGFENG MOTOR CORP HUBEI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap