Valve control method and device for engine

A valve control and engine technology, applied in engine control, machine/engine, electrical control, etc., can solve the problems of waste of resources, user comfort, reduced valve reliability, etc., to avoid overheating damage, improve reliability, and reduce resources. wasteful effect

Active Publication Date: 2018-12-25
WEICHAI POWER CO LTD
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a valve control method and device for an engine, which can solve the problems in the prior art that the ECU outputs invalid PWM control signals to the valve, resulting in waste of resources, user comfort, and reduced reliability of the valve.

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
  • Valve control method and device for engine
  • Valve control method and device for engine
  • Valve control method and device for engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, 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 making creative efforts belong to the protection scope of the present invention.

[0047] It can be known from the background technology that there are many working conditions during the operation of the diesel engine that require the valve to be closed, such as during the regeneration of diesel particulate filters (Diesel particulate filters, DPF). The closed state of the EGR valve means that the control valve reaches the mechanical peak of its opening of 0%. However, due to various reasons such as valve aging, deformation, con...

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 valve control method and device for an engine. The valve control method comprises the following steps: collecting the actual opening of a target valve; inquiring a duty ratiolimiting value corresponding to the actual opening of the valve in a preset duty ratio limiting value table; and taking the duty ratio limiting value as the duty ratio limiting value of the target valve. According to the invention, by giving the valve different duty ratio limiting values at different openings, the condition that the valve is overheated and damaged is avoided while the demand forduty ratio of the engine is met, so that the reliability of the valve is improved, and the unnecessary resource waste is reduced.

Description

technical field [0001] The invention relates to the field of mechanical control, in particular to a valve control method and device for an engine. Background technique [0002] A diesel engine is an engine that burns diesel to obtain energy release. Among them, exhaust gas recirculation (ExhaustGas Recirculation, EGR) valves, throttle valves and other valve components are important components commonly used in diesel engines. The valve components in diesel engines are generally driven by DC motors, and the electronic control unit (Electronic Control Unit, ECU) outputs a pulse width modulation (Pulse Width Modulation, PWM) control signal of a certain frequency to control the valve opening of the valve components. [0003] During the operation of the diesel engine, there are many working conditions that require the valve to be closed. For example, during the regeneration of diesel particulate filters (Diesel particulate filters, DPF), in order to ensure the smooth progress of t...

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): F02D41/02
CPCF02D41/0077F02D41/02F02D2041/0022F02D2200/0404F02D2200/101F02D2200/1012
Inventor 栾军山张晨代子阳姚旺
Owner WEICHAI POWER 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