Numerical analysis of the influence of the fuel injection timing and ignition position in a direct-injection natural gas engine

2017 ◽  
Vol 149 ◽  
pp. 748-759 ◽  
Author(s):  
Tao Wang ◽  
Xin Zhang ◽  
Jibao Zhang ◽  
Xiaosen Hou
Keyword(s):  
Numerical Analysis ◽  
Natural Gas ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection Timing ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Fuel Injection Timing

Combustion characteristics of a direct-injection natural gas engine under various fuel injection timings

2006 ◽  
Vol 26 (8-9) ◽  
pp. 806-813 ◽  
Author(s):  
Ke Zeng ◽  
Zuohua Huang ◽  
Bing Liu ◽  
Liangxin Liu ◽  
Deming Jiang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Fuel Injection ◽  
Direct Injection ◽  
Combustion Characteristics ◽  
Gas Engine ◽  
Natural Gas Engine

Investigation on the combustion noise of a pilot-ignited direct-injection natural-gas engine

2016 ◽  
Vol 230 (14) ◽  
pp. 1942-1957 ◽  
Author(s):  
Menghan Li ◽  
Qiang Zhang ◽  
Guoxiang Li
Keyword(s):  
Natural Gas ◽  
Direct Injection ◽  
Injection Pressure ◽  
Pressure Level ◽  
Combustion Noise ◽  
Injection Timing ◽  
Cylinder Pressure ◽  
Engine Load ◽  
Gas Engine ◽  
Natural Gas Engine

In this paper, the effects of the injection timing, the injection pressure and the engine load on the combustion noise of a pilot-ignited direct-injection natural-gas engine were explored by analysing the separate components of the in-cylinder pressure. The results suggested that retarding the injection timing and reducing the injection pressure are effective ways of controlling the combustion noise. This can be attributed to the promoted burning rate at advanced injection timings and to the increased injection pressure. However, the effect of the engine load seems to be less obvious, although the resonance pressure level appears to increase with increasing engine load; the estimated combustion noise shows a decreasing tendency.

Combustion characteristics of natural-gas direct-injection combustion under various fuel injection timings

2003 ◽  
Vol 217 (5) ◽  
pp. 393-401 ◽  
Author(s):  
Z Huang ◽  
S Shiga ◽  
T Ueda ◽  
H Nakamura ◽  
T Ishima ◽  
...  
Keyword(s):  
Natural Gas ◽  
Fuel Injection ◽  
Direct Injection ◽  
Pressure Rise ◽  
Combustion Efficiency ◽  
Time Interval ◽  
Injection Timing ◽  
Ignition Timing ◽  
Fuel Injection Timing ◽  
Wide Range

The characteristics of natural-gas direct-injection combustion under various fuel injection timings were studied by using a rapid compression machine. Results show that natural-gas direct injection can result in combustion that is much faster than homogeneous combustion while shortening the time interval between injection timing and ignition timing can markedly decrease the combustion duration. Unburned hydrocarbon would increase over a wide range of equivalence ratios, shortening the time interval between injection timing and ignition timing can decrease the value to that of homogeneous-mixture combustion. The NOx level is high but the CO level is low over a wide range of equivalence ratios and is little affected by fuel injection timing. High values of pressure rise due to combustion can be realized and it is insensitive to the variation in fuel injection timing. High combustion efficiency can be achieved, which is also independent of injection timing.

Soot emission prediction in pilot ignited direct injection natural gas engine based on n-heptane/toluene/methane/PAH mechanism

Energy ◽  
2018 ◽  
Vol 163 ◽  
pp. 660-681 ◽  
Author(s):  
Menghan Li ◽  
Qiang Zhang ◽  
Xiaori Liu ◽  
Yuxian Ma ◽  
Qingping Zheng
Keyword(s):  
Natural Gas ◽  
Direct Injection ◽  
Soot Emission ◽  
Gas Engine ◽  
Natural Gas Engine

Lean-burn direct injection natural gas engine control for transient applications

2017 ◽  
pp. 37-57
Author(s):  
Panagiotis Katranitsas ◽  
Andrew Auld ◽  
Adam Gurr ◽  
Anthony Truscott
Keyword(s):  
Natural Gas ◽  
Direct Injection ◽  
Engine Control ◽  
Lean Burn ◽  
Gas Engine ◽  
Natural Gas Engine

Kinetic Study of the Ignition Process of Methane/n-Heptane Fuel Blends under High-Pressure Direct-Injection Natural Gas Engine Conditions

2020 ◽  
Vol 34 (11) ◽  
pp. 14796-14813
Author(s):  
Jingrui Li ◽  
Xinlei Liu ◽  
Haifeng Liu ◽  
Ying Ye ◽  
Hu Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Kinetic Study ◽  
Direct Injection ◽  
Ignition Process ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Fuel Blends

scholarly journals The effects of partially premixed combustion mode on the performance and emissions of a direct injection natural gas engine

Fuel ◽  
2019 ◽  
Vol 250 ◽  
pp. 218-234 ◽  
Author(s):  
Menghan Li ◽  
Xuelong Zheng ◽  
Qiang Zhang ◽  
Zhenguo Li ◽  
Boxiong Shen ◽  
...  
Keyword(s):  
Natural Gas ◽  
Direct Injection ◽  
Premixed Combustion ◽  
Combustion Mode ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Partially Premixed Combustion ◽  
Performance And Emissions ◽  
Partially Premixed
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