Variable-focus engine laser ignition device

A laser ignition and engine technology, applied in the direction of engine ignition, engine components, machines/engines, etc., can solve problems such as fixing, and achieve the effects of low energy consumption, high reliability, and light weight

Active Publication Date: 2011-05-18
TIANJIN UNIV
View PDF7 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distribution of the mixed gas in the cylinder of the direct injection gasoline engine varies greatly with the load and speed, so the best ignition position of the mixed gas also changes with the change of the working conditions. This invention aims at the relatively fixed laser ignition position. problems to come up with solutions

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
  • Variable-focus engine laser ignition device
  • Variable-focus engine laser ignition device
  • Variable-focus engine laser ignition device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The structure of the present invention will be further described below in conjunction with the accompanying drawings and through embodiments. The engine laser ignition device with variable focal length has a specific structure: the laser igniter housing 1 is fixed on the cylinder head 2 through threads, the laser igniter housing is provided with a primary lens holder 3 and a secondary lens holder 4, and the primary lens holder 4 The lens 5 and the secondary lens 6 are respectively embedded in respective lens fixing seats. The lower end of the secondary lens holder 4 is provided with a protective mirror 7; the laser igniter housing 1 is connected and fixed with the optical fiber 8; the laser beam 9 is injected into the cylinder through the optical fiber 8, the primary lens 5, the secondary lens 6 and the protective mirror 7, Converge on focus 10. Above or below the primary lens holder 3 is provided with a drive mechanism (such as figure 1 ). There are three types of d...

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 variable-focus engine laser ignition device, wherein the specific structure is that an optical fiber is fixed to a cylinder cover through a laser igniter shell; a primary lens fixing seat and a secondary lens fixing seat are arranged in the laser igniter shell; and a primary lens and a secondary lens are horizontally embedded in the lens fixing seats respectively. The lower end of the secondary lens fixing seat is provided with a protection mirror; a laser beam is emitted into a cylinder through the optical fiber, the primary lens, the secondary lens and the protection mirror and converged on a focus point. Drive mechanisms of three manners are arranged above or below the primary lens fixing seat so that the primary lens generates displacement. According to the invention, the relative position of the laser focus in the cylinder can be adjusted according to the requirements of different work conditions. The laser igniter has a small volume about 1 / 10 that of a spark plug, and one end of the laser igniter connected into an air cylinder only consists of an optical fiber and a lens. Compared with the spark plug, the laser igniter has the characteristics of small energy consumption and high reliability. The laser igniter is in a non-contact ignition manner, thereby avoiding the problem of carbon deposition close to the spark plug electrode.

Description

technical field [0001] The invention belongs to the technology of internal combustion engines, and in particular relates to an ignition device for an ignition type engine. technical background [0002] The combustion form of the engine can be divided into ignition type and compression ignition type. The spark plug is one of the key components of the ignition type engine. However, with the emergence of in-cylinder direct injection gasoline engine (GDI) and the wide application of laser technology, the spark plug ignition technology is coming to an end. . Because gasoline direct injection technology has better cold start characteristics and fuel economy, and this technology makes other new technologies such as air intake supercharging and stratified combustion easier to control and implement. [0003] In-cylinder direct injection gasoline engine adopts different combustion modes according to different working conditions, including: homogeneous combustion mode and stratified c...

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): F02P23/00G02B7/04
Inventor 王天友杨晟华鲁祯
Owner TIANJIN UNIV
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