Unlock instant, AI-driven research and patent intelligence for your innovation.

A two-stage variable valve lift mechanism for internal combustion engines

A valve lift, internal combustion engine technology, used in machines/engines, mechanical equipment, engine components, etc., can solve the problems of inability to accurately and effectively complete cam state switching, low thermal efficiency, complex structure, etc., to achieve good NVH design, noise reduction, simple craftsmanship

Active Publication Date: 2022-05-24
JAPHL POWERTRAIN SYST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional internal combustion engines, the valve lift is fixed, which leads to the same valve lift opening regardless of the heavy load or light load conditions, resulting in energy waste and low thermal efficiency
The structure of the variable valve lift mechanism in the prior art is complicated
And when working, it is impossible to accurately and effectively complete the cam state switching

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
  • A two-stage variable valve lift mechanism for internal combustion engines
  • A two-stage variable valve lift mechanism for internal combustion engines
  • A two-stage variable valve lift mechanism for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In the following, referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape and structure of each component involved, the mutual position and connection relationship between each part, the function and working principle of each part, etc. will be further described. Details of:

[0032] as attached figure 1 -Attached Figure 11 As shown, the present invention is a two-stage variable valve lift mechanism for an internal combustion engine, comprising a mandrel 1, a valve pin A2, a valve pin B3, a movable sleeve sleeve A4 and a sleeve B5 on the mandrel 1, and the sleeve Adjustment part A6 is set on A4, adjustment part B7 is set on shaft sleeve B5, displacement slope a8 and displacement slope b9 are arranged on adjustment part A6, displacement slope c10, displacement slope d11, displacement slope e12, displacement slope f13 are arranged on adjustment part B7, The shaft sleeve A4 ...

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 two-stage variable valve lift mechanism for internal combustion engines applied in the technical field of automobile engines (internal combustion engines), and the adjustment part B (7) of the two-stage variable valve lift mechanism for internal combustion engines It is processed and formed by MIM process, the adjustment part A (6) is machined and formed, and the valve pin B (3) is set to act on the adjustment part B (7) to drive the sleeve B (5) relative to the mandrel (1) The structure moves axially to the left, and the valve pin B (3) is also set to act on the adjustment part A (6) to drive the shaft sleeve A (4) to the right axial direction relative to the core shaft (1). The moving structure, the two-stage variable valve lift mechanism for the internal combustion engine described in the present invention, can accurately realize the switching of the cam state of the engine, so that the engine can adopt the best working state under different working conditions more scientifically. Complete combustion and work, improve thermal efficiency.

Description

technical field [0001] The invention belongs to the technical field of automobile engines (internal combustion engines), and more particularly relates to a two-stage variable valve lift mechanism for an internal combustion engine. Background technique [0002] As the power machinery with the highest thermal efficiency and the most widely used, the internal combustion engine accounts for 90% of the total power of the power plants used in the world, and is the main consumption channel of the world's petroleum energy. On the one hand, with the increase in the number of automobiles, the consumption of internal combustion engine oil will increase rapidly, and the contradiction between oil supply and demand will inevitably become increasingly serious. While consuming a lot of energy, internal combustion engines are also the biggest source of atmospheric environment, especially urban atmospheric pollution. Innovative internal combustion engine technology is of great significance fo...

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): F01L13/00
CPCF01L13/0036F01L2013/0078
Inventor 王雷范礼丁万龙李海萌刘玉坪邵璠甄子源
Owner JAPHL POWERTRAIN SYST