Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hybrid vehicle engine and electric motor maximum speed limit control method and system

An engine speed, hybrid vehicle technology, which is applied to the arrangement of multiple different prime movers of hybrid vehicles, general power units, and motor vehicles, etc., can solve the problems of shifting delay, shifting setback, and difficult transmission, etc. Achieve the effect of preventing continuous chattering or vibration, improving fuel efficiency, and improving drivability

Active Publication Date: 2017-10-24
HYUNDAI MOTOR CO LTD +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Second, it may not be easy to maintain the transmission input speed at the speed value used to limit the maximum speed of the engine or electric motor
That is, when the maximum speed of the engine or electric motor is limited to 6200rpm, the input speed of the transmission may exceed 6200rpm
In this case, it may not be easy to protect the transmission hardware system and the electric power equipment hardware system
[0027] Third, when the engine clutch is locked, it is difficult to maintain consistency in the maximum torque limits of the engine and electric motor due to the speed difference between the engine and electric motor
For example, when the engine is fuel-cut due to the maximum torque limit, the battery's state of charge (SOC: State of Charge) may deteriorate as the electric motor generates additional torque to meet the demand torque
[0028] Fourth, shift shock and shift delay may occur due to drastic changes in the input torque to the transmission

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
  • Hybrid vehicle engine and electric motor maximum speed limit control method and system
  • Hybrid vehicle engine and electric motor maximum speed limit control method and system
  • Hybrid vehicle engine and electric motor maximum speed limit control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Hereinafter, exemplary embodiments of the present invention will be described more fully with reference to the accompanying drawings. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention.

[0055] Also, the same reference numerals refer to the same elements (elements) throughout the specification.

[0056] Throughout this specification, unless explicitly stated to the contrary, the term "comprising" and its variations such as "comprises" or "comprising" should be understood as intended to include the stated elements (elements), but not to exclude any other elements ( element).

[0057] figure 1 is an exemplary block diagram schematically showing a hybrid vehicle to which a control system for limiting maximum rotational speeds of an engine and an electric motor to which an exemplary embodiment of the present inventive concept can be applie...

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 present invention provides a control method and system for limiting maximum rotational speeds of an engine and a motor of a hybrid vehicle including an engine clutch configured to control power transmission between the engine and the motor. The control method includes: determining whether the rotational speed of the engine exceeds a predetermined maximum engine rotational speed; determining whether the rotational speed of the electric motor exceeds a predetermined maximum electric motor rotational speed; when the rotational speed of the above-mentioned engine exceeds a predetermined maximum engine rotational speed, configuring the limiting the speed of the engine; and limiting the speed of the electric motor based on a predetermined motor torque profile when the speed of the electric motor exceeds a predetermined maximum motor speed.

Description

technical field [0001] The present invention relates to a control method and system for limiting the maximum rotational speed of an engine and an electric motor of a hybrid vehicle. Background technique [0002] Hybrid vehicles run on power from an internal combustion engine and from an electric motor with the help of a battery. In particular, hybrid vehicles are designed to efficiently combine and use power from an internal combustion engine and an electric motor. [0003] For example, if figure 1 As shown, the hybrid vehicle includes: an engine 10; an electric motor 20; an engine clutch 30 controlling power transmission between the engine 10 and the electric motor 20; a transmission 40; a differential gear 50; a battery 60; an integrated starter generator (ISG: Integrated Starter-generator) 70 for electric power; and wheels 80 . [0004] Also shown in the figure, the hybrid vehicle includes: a hybrid control unit (HCU: Hybrid Control Unit) 200 that controls the overall ...

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 Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/10B60W30/18B60W50/038
CPCB60W10/06B60W10/08B60W20/10B60W30/18Y10S903/902B60W2510/081B60W2510/0638B60W2710/0666B60W2710/081B60W2710/083B60W2710/0644B60W50/038B60K6/48B60W30/1884B60W2510/083B60W2050/0027Y02T10/62B60K31/00B60W20/00B60W20/40
Inventor 朴泰昱
Owner HYUNDAI MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com