System and method for starting engine of HEV (Hybrid Electric Vehicle)

A hybrid vehicle and engine starting technology, which is applied in the starting of the engine, the starting of the motor for the engine, the engine components, etc., can solve the problems of increasing the weight of the power system, increasing the energy consumption, unfavorable vehicle performance consistency, etc., to reduce costs, The effect of smooth start

Active Publication Date: 2015-03-18
SAIC MOTOR
View PDF6 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simultaneous use of two motors in a hybrid vehicle not only increases the cost, but also makes the front-end wheel train of the engine more complicated, increases the weight of the power system, and increases energy consumption
At the same

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
  • System and method for starting engine of HEV (Hybrid Electric Vehicle)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

[0016] figure 1 It shows the hybrid vehicle engine rapid start system of the present invention, which includes an engine 2, and a high-voltage integrated starter generator (Integrated Starter and Generator, also known as an integrated starter and generator, generally referred to as ISG) rigidly connected to the engine 2 3, and the high-voltage battery 1 connected to the ISG 3 through the high-voltage wiring harness, and also includes the vehicle controller (Hybrid Control Unit, also known as the hybrid vehicle control system, generally referred to as HCU) 7, connecting the motor of the HCU 7 and the ISG 3 The controller 6 connects the HCU 7 with the engine management system (Engine Management System, generally referred to as EMS) 5 ...

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 system and a method for starting an engine of an HEV (Hybrid Electric Vehicle). The system comprises a high-voltage battery, the engine, an ISG (Integrated Starter and Generator), a BMS (Battery Management System), an EMS (Engine Management System), a motor controller and an HCU (Hybrid Control Unit), wherein the engine is in rigid connection with the ISG, the energy of the ISG is obtained from the high-voltage battery, the HCU is used for controlling the ISG through the motor controller, battery information is obtained through the BMS, engine information is obtained through the EMS, the HCU is used for determining the starting target rotating speed, the oil injection starting and/or ignition rotating speed and whether to request to reduce the battery discharging capacity limit in a short time by the BMS or not through the battery information and the engine information, the motor controller is instructed for dragging the engine and the ISG to the target rotating speed and maintaining the target rotating speed, and the HCU is used for determining whether the starting is finished or not through a torque which is fed back by the motor controller and an engine state which is fed back by the EMS. According to the system for starting the engine of the HEV, disclosed by the invention, the system does not comprise a traditional starting engine with 12V/24V low voltage, and the ISG is also utilized for starting the engine under a low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to an engine starting system and method for a hybrid electric vehicle. Background technique [0002] A hybrid electric vehicle (Hybrid Electric Vehicle, HEV) refers to a vehicle whose drive system is composed of two or more single drive systems that can operate simultaneously. supply. Due to the different components, layout methods and control strategies, a variety of classification forms have been formed. Because of its energy saving, environmental protection and new energy features, hybrid electric vehicles are supported by more and more policies. The automotive industry is very concerned about hybrid electric vehicles. Hybrid electric vehicles have become a focus of current automobile research and development. [0003] Hybrid electric vehicles have developed rapidly in recent years. In current real life, most hybrid electric vehicles use traditional internal co...

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
IPC IPC(8): F02N11/00
CPCF02N11/08F02N2200/022
Inventor 朱军孙俊顾铮珉邱巍张霏霏
Owner SAIC MOTOR
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