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

Piston and method of exerting force on the piston

A technology of piston and piston shaft, applied in the field of piston of free piston engine driven generator

Active Publication Date: 2016-12-14
LIBERTINE FPE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This change in diameter requires complex and expensive mechanical methods to seal each combustion chamber and ensure they are coaxially aligned with each other and with the shaft of the motor in the middle

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
  • Piston and method of exerting force on the piston
  • Piston and method of exerting force on the piston
  • Piston and method of exerting force on the piston

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0079] figure 1 An example of the present invention provided in a free-piston engine-driven power generation system is shown. It can be seen that the piston 2 is free to move along the length of the cylinder 1, and that the piston is constrained to be coaxially aligned with the cylinder 1, thereby effectively dividing the cylinder 1 into a first combustion chamber 3 and a second combustion chamber 4, each chamber according to the position of the piston 2 in The position in cylinder 1 has variable volume. No part of piston 2 protrudes from cylinder 1. Using the first chamber 3 as an example, each of the chambers 3, 4 has a variable height 3a and a fixed diameter 3b.

[0080] Preferably, the cylinder 1 is rotationally symmetric about its axis and about a central plane perpendicular to its axis. Arrangements with circular cross-section pistons are preferred, although other geometries may be used to practice the invention, such as pistons with square or rectangular cross-sectio...

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

A piston for a free-piston engine-driven generator, comprising one or more elements coaxially arranged along the axis of the piston, wherein the length of the piston is at least five times its largest diameter, wherein the At least one is formed from a magnetically permeable composite material having an isotropic resistivity greater than twice that of electrical steel, an arrangement that provides improved free piston position control, more consistent combustion and Improved electrical conversion efficiency.

Description

technical field [0001] The present invention relates to a piston, in particular to a piston for a free-piston engine-driven generator. Background technique [0002] In a conventional internal combustion engine, a piston is mechanically confined within its cylinder by being connected to a crankshaft which is rotationally driven by the reciprocating linear movement of the piston within the cylinder. However, in a free piston engine the pistons are not connected to the crankshaft, although pistons may be provided in generators of this type with an external mechanical coupling such as taught in US-A-7383796. [0003] Further, it is known to generate electricity by changing the magnetic flux produced by the movement of a reciprocating piston through one or more electric coils in a free piston engine, eg US-A-7318506. In this arrangement, the piston carries a first coil and as it reciprocates in the cylinder it induces a current in a second coil surrounding the cylinder. However...

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): F02B71/04F02B63/04H02K7/18
CPCF02B63/041F02B71/04H02K7/1884H02K2213/03Y10T29/49249Y10T29/49231F02B71/00F02F3/0015H01K7/00H02K7/18F02F3/0084
Inventor 塞缪尔·爱德华·科克里尔
Owner LIBERTINE FPE
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