Experimental Study on CNG Engine with Different Ventury Configuration

2021 ◽  
Author(s):  
M.R. Dahake ◽  
S.E. Patil
Keyword(s):  
Experimental Study ◽  
Cng Engine

Starting Control Strategy and Experimental Study of CNG Engine

2012 ◽  
Vol 562-564 ◽  
pp. 1044-1047
Author(s):  
Yi Tuan He ◽  
Fan Hua Ma ◽  
Zheng Liang Qi ◽  
Ren Zhe Chen
Keyword(s):  
Experimental Study ◽  
Control Strategy ◽  
Pulse Width ◽  
Engine Speed ◽  
Spark Timing ◽  
Cng Engine ◽  
Hc Emissions ◽  
Starting Control ◽  
Injection Pulse

To reduce the HC emissions of a CNG engine during starting period, starting experiments were carried out on a CNG engine. Injection pulse width (IPW) and spark advance angle () were controlled. The results indicate that wider injection pulse width and earlier spark timing cause higher HC emissions. To guarantee a reliable start and low HC emissions, the engine should start with relatively wider injection pulse width and earlier spark timing, and the injection pulse width and spark advance angle should be reduced gradually after the engine speed is steady.

Effect of the Ignition Time on the Turbocharged Lean-Burned CNG Engine

2013 ◽  
Vol 712-715 ◽  
pp. 1320-1324
Author(s):  
Xiao Lu ◽  
Da Wei Qu ◽  
Jian Xi Pang ◽  
Ji Fei Lu
Keyword(s):  
Experimental Study ◽  
Boundary Conditions ◽  
Ignition Time ◽  
Nox Emissions ◽  
Emission Performance ◽  
Low Speed ◽  
Output Torque ◽  
Cng Engine ◽  
Load Conditions

Experimental study on the combustion and emission performance of turbocharged lean-burned CNG engine by the ignition time. Speed of the engine is 1340r/min,1615r/min,1890r/min,with 25%, 50%,75%,100% load. Results show that when keeping other combustion boundary conditions unchanged, the effect of the ignition time on engine output torque and CH4 is little,the effect changes as speed varies from low speed and load conditions to higher level.However,the effects of ignition time on NOx emissions are huge.With the backward changes of the ignition time,NOx emissions has decreased significantly.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study
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