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

Vehicle engine start-stop control system

A start-stop control, engine technology, applied in engine control, machine/engine, electrical control, etc., to achieve the effect of reducing harmful gas emissions, easy operation, and reducing fuel consumption

Active Publication Date: 2017-03-22
UNITED AUTOMOTIVE ELECTRONICS SYST
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that when the vehicle is decelerating and coasting, the engine can be automatically turned off, and the fuel consumption and harmful gas emissions can be reduced when the vehicle is coasting

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
  • Vehicle engine start-stop control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Vehicle engine start-stop control systems, such as figure 1 As shown, including vehicle speed sensor, throttle position sensor, start-stop controller;

[0051] The vehicle speed sensor is used to output a vehicle speed signal;

[0052] The throttle position sensor is used to output a throttle position signal;

[0053] The start-stop controller is used to output a fuel injector control signal to control the fuel injector according to the vehicle speed signal and the throttle position signal;

[0054] When the vehicle speed exceeds the first threshold value and the change rate of throttle opening reduction exceeds the second threshold value within the first time, the start-stop controller outputs a fuel injector control signal to control the fuel injector to stop fuel injection.

[0055] The vehicle engine start-stop control system in Embodiment 1 can automatically shut down the engine when the vehicle is decelerating and coasting, and make full use of the inertia during ...

Embodiment 2

[0057] Based on the vehicle engine start-stop control system of Embodiment 1, the vehicle engine start-stop control system also includes an engine speed sensor and a vehicle speed sensor fault diagnosis module;

[0058] The engine speed sensor is used to output an engine speed signal;

[0059] The vehicle speed sensor fault diagnosis module is used to monitor the state of the vehicle speed sensor; when the vehicle speed sensor has a set fault, it outputs a vehicle speed sensor fault status signal, otherwise it outputs a vehicle speed sensor normal status signal;

[0060] When the vehicle speed sensor outputs the normal state signal of the vehicle speed sensor, the start-stop controller outputs the fuel injector control signal to control the fuel injector according to the vehicle speed signal and the throttle position signal; when the vehicle speed exceeds the first threshold value, and at the first If the rate of change of the decrease of the throttle opening within the time e...

Embodiment 3

[0066] Based on the vehicle engine start-stop control system of Embodiment 2, the vehicle engine start-stop control system further includes a cylinder body temperature sensor;

[0067] The cylinder body temperature sensor is used to detect the cylinder body temperature of the engine;

[0068] When the vehicle speed sensor outputs a normal state signal of the vehicle speed sensor, the start-stop controller outputs a fuel injector control signal to control the fuel injector according to the vehicle speed signal, throttle position signal, and cylinder body temperature; when the vehicle speed exceeds the first threshold value, And in the first time, the rate of change of throttle opening reduction exceeds the second threshold value, and the cylinder body temperature of the engine exceeds the third threshold value, the start-stop controller outputs a fuel injector control signal to control the fuel injector to stop fuel injection;

[0069] When the vehicle speed sensor outputs a v...

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 control system for starting and stopping of a vehicle engine. When a vehicle slows down and slides, the automatic flameout of the engine can be realized; the inertia during a slowing down process is fully utilized to cause the vehicle to be stably driven, so that the fuel consumption and the harmful gas emission when the vehicle slides are reduced; when a speed sensor is absent or the speed sensor is in fault, if the present working condition being the slowing-down sliding state can be judged according to the rotating speed of the engine, and the automatic flameout of the engine can be realized when the vehicle slows down and slides; after the engine enters into the automatic flameout state and the acceleration is required, an accelerator is pulled and an opening of a valve is changed from small to big, namely, the engine can be restarted, the vehicle immediately enters into the driving state and the operation is simple and convenient.

Description

technical field [0001] The invention relates to engine control technology, in particular to a vehicle engine start-stop control system. Background technique [0002] With the improvement of environmental protection requirements, the country has put forward higher requirements for vehicle emissions. The common vehicle engine stop control system, the engine does not turn off when the vehicle is coasting, still consumes fuel and emits harmful gases, resulting in high fuel consumption and polluting the environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to realize the automatic flameout of the engine when the vehicle is decelerating and gliding, so as to reduce the fuel consumption and harmful gas emission when the vehicle is gliding. [0004] In order to solve the above technical problems, the present invention provides a vehicle engine start-stop control system, which includes a vehicle speed sensor, a throttle posi...

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): F02D41/14F02D41/30
Inventor 李强习纲
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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