Reason for higher stability or lower COV of CI engine compared to SI engine?

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What is the ideal CA50 location for SI engine?

CA 50 - 50% burn (crank angle) from a 'rate of heat release vs crank angle' curve for a given...

09 October 2018 442 1 View

GDI engine injection duration, injection quantity and rail pressure?

Dear all Can anyone provide me the details of fuel injection duration, injection quantity and rail pressure at which a GDI engine operates at full load, part load and idling conditions. I am in...

06 July 2018 7,220 0 View

Increase in fuel temperature before injection in GDI?

Dear all I wish to know what is the rise in temperature of the fuel compared to the ambient temperature once it leaves the fuel injector nozzle in GDI. The temperature increase can be due to...

06 July 2018 4,991 1 View

Radar sensors availability?

Dear all I wish to know whether any one is working on Radar system for autonomous vehicles. I wish to know who is the supplier of the same. I need only a few systems. Can i get any system that...

02 March 2018 5,406 5 View

Basics of internal combustion engines?

Beginners can use this for understanding the basics. http://www.iitg.ernet.in/scifac/qip/public_html/cd_cell/internal_combusn_engines.htm

02 March 2018 3,047 0 View

Earth core is it a future energy source? Solution for all energy crisis! ?

We all know that earth core is at very high temperature. Is it possible to extract that energy out from there? Geothermal as of now the technology is not well mature enough as per my opinion....

01 February 2018 4,516 4 View

Can vibration induce turbulence in a laminar flow?

I read in one fluid dynamics text that flow can remain laminar even up to 8000 to 10000 Reynolds number when it flow through a pipe. If the medium is undisturbed and surface is smooth enough. So i...

01 February 2018 8,834 22 View

Can anyone suggest good papers or books on in-cylinder flow in IC Engines?

I wish know in detail about 1. In cylinder turbulence pros and cons. 2. Effect of tumble. 3. How to analyze the vortices formed and its effect? 4. Velocity vectors and its importance. 5. Flow...

01 February 2018 6,697 0 View

Turbulent kinetic energy in IC Engines?

Hai can anyone suggest me a simple and good book/paper that can give me more insight into turbulent kinetic energy in IC engine related studies.

31 December 2017 3,804 2 View

How to avoid signal interference in forward collision control system?

We will be having cars with forward looking radar or ultrasonic sensors which will look for obstacles in a car. If two signals from 2 cars interfere and if it result in wrong estimation of value...

31 December 2017 767 3 View

What is the reason for current dropping in OER , LSV curve?

I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...

10 August 2024 3,629 1 View

What may be the reasons for failures of Tube toi Tube Sheet Joints in Boiler Drum ?

We have observed that tube to tube sheet joint leaked in our boiler and needs to overcome same by knowing the root cause.

08 August 2024 3,161 0 View

In WECS : Gain values for conversion of PMSM rotor speed(rad/s) to p.u. input to wind turbine and Torque(pu) of WT to input of PMSM-Torque (Nm) ?

I am working on developing a MATLAB Simulink model of Wind turbine with PMSG followed by MPPT Boost converter. I have gone through so many literature and videos but I am not finding clear solution...

03 August 2024 888 1 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

Reason for discontinuities in my Band structure?

Hey All! I am wondering what might be wrong with my band structure. I did the calculations using VASP and plotted the results using Origin. Although I have tried changing various input...

25 July 2024 2,920 11 View

What is single absorption ESR spectroscopy ?

In the context of Electron Spin Resonance (ESR) spectroscopy, under what conditions is an absorption spectrum considered to be a single absorption spectrum?

25 July 2024 2,325 1 View

Is it fare for editors of reputed Journals to put on hold manuscripts more than six months without review updates, Are they harassing researchers?

It is being seen that Editors of some reputed Journals are putting on hold the manuscripts and not updating review states even passing more than six months from submission. Researchers are...

24 July 2024 8,596 2 View

Why electrical charge on the moving plate increase?

Hi, everyone This figure depicts a simulation of an electrostatic energy harvesting system in COMSOL Multiphysics software. My question is regarding the relationship between the changes in...

19 July 2024 4,694 4 View

How Can I Resolve a Persistent Unwanted NMR Peak at 1.25 ppm?

Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...

15 July 2024 9,065 4 View