Variable-compression-ratio device and engine

A compression ratio, engine technology, applied in the direction of machines/engines, mechanical equipment, etc., can solve the problem of large moving mass, achieve the effect of small moving mass, increase design freedom, and wide range of variable compression ratio

Active Publication Date: 2017-08-08
GUANGZHOU AUTOMOBILE GROUP CO LTD
View PDF11 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a variable compression ratio device and variable compression ratio engine

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-compression-ratio device and engine
  • Variable-compression-ratio device and engine
  • Variable-compression-ratio device and engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] Such as Figure 1 to Figure 4 As shown, the variable compression ratio device provided by an embodiment of the present invention includes a piston 1, a connecting rod 2, a swing rod 3, a rotating rod 4, an eccentric shaft 5 and a crankshaft 6 constituting an eccentric structure. The eccentric structure is used to change the engine compression ratio by changing its own rotational position.

[0035] Such as figure 1 and figure 2 As shown, the swing rod 3 is sequentially provided with a first pin hole 31 constituting a first connecting portion, a second pin hole ...

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 provides a variable-compression-ratio device and engine. The variable-compression-ratio device comprises a piston, a connecting rod, an oscillating rod, a rotating rod, an eccentric structure and a crankshaft; the oscillating rod is sequentially provided with a first connecting part, a second connecting part and a third connecting part along the length direction of the oscillating rod; one end of the connecting rod is hinged to the piston around a first rotating axis, and the other end of the connecting rod is hinged to the first connecting part around a second rotating axis; one end of the rotating rod is hinged to the second connecting part around a third rotating axis, and the other end of the rotating rod is hinged to a crank pin of the crankshaft around a fourth rotating axis; and the eccentric structure is hinged to the third connecting part. According to the variable-compression-ratio device provided by the invention, the existing lower connecting rod which is relatively large in size and weight and is of a triangular block structure is replaced with the oscillating rod and the rotating rod which are relatively small in weight, so that the whole variable-compression-ratio device is relatively small in movement mass.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to a variable compression ratio device and a variable compression ratio engine. Background technique [0002] The compression ratio of a traditional engine is a fixed value, and the engine cannot be changed during operation. When the automobile engine is running under full working conditions, the fixed compression ratio cannot take into account both high-load dynamics and low-load economy. [0003] For this reason, some manufacturers have designed engines with variable compression ratio devices. An engine with a variable compression ratio device can take into account both engine power and economy, that is, a small compression ratio is used in the high-load area to increase the maximum torque and maximum power of the engine, and a large compression ratio is used in the low-load area to improve the low-load area. fuel economy. [0004] A conventional variable compression ratio devi...

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
IPC IPC(8): F02B75/04
CPCF02B75/04
Inventor 林思聪练海年刘巨江占文锋
Owner GUANGZHOU AUTOMOBILE GROUP 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