Method for controlling engine starting of blended power electric automobile

A technology of electric vehicles and hybrid power, which is applied in the direction of motor starting for engines, engine starting, engine components, etc., which can solve the problems of increasing exhaust emissions, fuel consumption, and the inability to realize automatic start and stop functions, etc., so as to reduce idling conditions, The effect of reducing vehicle fuel consumption and exhaust pollution

Inactive Publication Date: 2007-06-27
CHERY AUTOMOBILE CO LTD
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional internal combustion engine vehicles cannot automatically start and stop when the engine is idling, which consumes fuel in vain and increases exhaust emissions

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
  • Method for controlling engine starting of blended power electric automobile
  • Method for controlling engine starting of blended power electric automobile
  • Method for controlling engine starting of blended power electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The control module receives the start demand signal S R Immediately after, a start command S is issued to the BSG control logic B , BSG starts to start the engine. After issuing the start command S B for a while T 1 After that, the engine speed is still lower than the speed threshold N 1 , it is considered that the BSG cannot drive the engine to rotate, and the start command S is canceled immediately B , at the same time send out engine start failure flag signal SF; start demand signal S R After receiving the start failure flag signal SF, it will be cancelled, S R After canceling, the engine start failure flag signal SF is cancelled, and the starting process ends, as shown in Fig. 2 . Conversely, when the start command S is issued B for a while T 1 After that, if the engine speed is higher than the engine rotation judgment threshold N 1 Then it is considered that BSG can drive the engine to rotate and continue to start the engine, as shown in Figures 1, 3, 4, a...

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

An engine start control method for the electric car with mixed power and BSG (Belt Starter / Generator) features that after a start instruction is sent to BSG control unit, the rotation speed of engine is monitored for judging if the start of engine is successful or failure and the start state of BSG is controlled to ensure high start safety. Said rotation speed judgment includes that the rotation speed raised within a certain time is used to judge if the engine can be driven to rotate, the time period in which the rotation speed is higher than a certain value is used to judge if the engine can be started, and the time period in which the rotation speed is higher than a certain value after BSG start is stopped is used to judge if the engine has been started successfully.

Description

technical field [0001] The invention relates to a hybrid electric vehicle, in particular to a hybrid electric vehicle engine start control method using BSG—Belt Starter / Generator, that is, a belt drive starter / generator integrated machine. Background technique [0002] Under the dual pressure of fuel economy and emission regulations, hybrid vehicles have been further developed. Because hybrid vehicles are superior to conventional power cars in terms of fuel economy, exhaust emissions, and drivability, hybrid vehicles can also improve driving performance and driving pleasure. For example, hybrid vehicles can realize idling shutdown, which fundamentally reduces the idling noise that plagues the driver and passengers. Energy recovery through regenerative braking can effectively reduce losses and save fuel consumption. In the future, hybrid electric vehicles, especially medium and low-level hybrid electric vehicles will occupy a large proportion in the car market. [0003] The...

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): F02N11/04
Inventor 周重光
Owner CHERY AUTOMOBILE CO LTD
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