Search results

Also called jet-ignition and flame-jet-ignition, this kind of system has already been known since the 1920s, but it still has a potential for further development, especially focused on greenhouse gas emissions reduction.
(a) Assembly of the prechamber (b) Generated mesh Results Through the comparison between values of cylinder pressure from numerical and experimental data, it’s possible to see that the results from simulation are really consistent.

These data greatly facilitate the determination of the required humidity and pressure parameters for the production of defect-free products. 2.
Due to the wide prevalence of this type of raw materials, we can talk about a significant reduction in the cost of finished products.

A further increase of welding current resulted in a reduction in joint breaking force as the recrystallization continued to progress.
Furthermore, too much current which forms a weld nugget or excess oxidization on the surface of wire is believed to lead embrittlement of joint, resulting in large data scatter in joint strength.

The data were taken from the web page of the National Institute of Standards and Technology (NIST).
In addition, notable reduction in the tensile strength and the strains at break of the PPy films actuated in the electrolyte solutions containing methanol were also observed.

The decrease of TEA content caused the reduction of the absorption bands intensity in the region of 1650cm −1 that corresponded to the stretching vibrations of the Aromatic ring in TEA.
Based on the spectral data obtained, it can be concluded that TEA and M-Pluronic F-127 are connected by intermolecular hydrogen bonds. 3.2 Micromorphology of composite membranes Fig. 2.

The simulation results of each model were transferred to the next one by data mapping method.
This is related to the reduction of the cross section area.

An increased fundamental understanding of the physical processes responsible for cleaning can lead to a narrowed distribution of physical forces and, as a result, to a reduction of damaged structures during the physical cleaning process.
The calculated transmission data have been verified with a hydrophone for the 1.67 MHz transducer.

Introduction With the development of industrial technologies, especially in automotive and aerospace industries, requirements on weight savings, reduction of fuel consumption and atmospheric pollution have attracted great attentions for lightweight structures.
The influences of various parameters on formation of weld bead, hardness, mechanical properties and microstructure were evaluated, which provided valuable data for later applications.

Then the length and opening degree increased and a certain number of new fractures and crack produced [8].The reduction of effective volume stress can improve permeability and the more crack can increase and improve migration path.
It can be seen from calculating data that the extraction speed of conventional drilling mining and hydraulic-cutting seam is 40m3/h and 65m3/h respectively.

Therefore, the precise classification of fine powder, which meets the requirement of the following process, becomes one of the vital technics in powder technology. [2] Several problems exit in the mechanical sieving classification of metal-powder as follows: (1) the screen blinding is serious when fine powder is processed which caused reduction of the throughput and sieving efficiency and a great loss of fine powder, (2) the screen is easily distorted and damaged when it is cleaned by means of high-frequency electromagnetic or ultrasonic vibration, (3) frequently replacement of the screen causing high labor intensity and low working efficiency and hetero-metal and non-metal materials could pollute the powder during the process of fixation and hermetization of screen , and (4) discretionarily adjustable separation size is unavailable because of the limitation of the sequence of mesh. [3] The problems mentioned above can be avoided by using other classification techniques without screen
In order to ensure the classification precision in practical processing, some methods can be used: 1) we could built up a system: the air flow velocity could be detected by a sensitive sensor, collection and transformation of the data are conducted by corresponding system, then the date will be putted into the computer, finally the computer send the commands to regulating system to precisely control the air flow velocity. 2) Appropriately broaden the separating room to reduce the fringe effect, and 3) choose the appropriate material for separating room in order to avoid the electrostatic effect between particles and material.