Strategies for Low Engine Speed Torque Enhancement of Natural Gas Engine Used for Commercial Vehicles: Observations with Compression Ratio

2020 ◽  
pp. 189-195
Author(s):  
Pritesh J. Suple ◽  
Chandrakant R. Sonawane ◽  
S. S. Thipse ◽  
J. P. Mohite ◽  
N. B. Chougule
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Engine Speed ◽  
Commercial Vehicles ◽  
Gas Engine ◽  
Natural Gas Engine

Impacts of Ignition and Jet Timing on Natural Gas Engine Start Process

2014 ◽  
Vol 1070-1072 ◽  
pp. 1748-1751
Author(s):  
Bo Wen Zou ◽  
Jing Bo Li ◽  
Jun Gang Liu
Keyword(s):  
Natural Gas ◽  
Engine Speed ◽  
Direct Injection ◽  
Ignition Timing ◽  
Gas Engine ◽  
Idle Speed ◽  
Natural Gas Engine ◽  
Hc Emissions ◽  
Start Process ◽  
Engine Start

Based on modified natural gas direct injection engine, we studied the impacts of ignition timing and jet timing on natural gas engine start process in this paper. The results shows that: when the first jet ignition occurs in the first compression stroke, the engine reaches idle speed 400rpm fastest; as the jet timing is delayed, emissions during engine start is gradually reduced, but when the jet late, HC surge occurs, the emissions deteriorates; with the ignition advance angle increasing, the engine speed growth accelerates, the peak moves forward; with the ignition advance angle increasing, HC emissions peak increases, the peak moves forward.

Performance optimization of in-cylinder thermochemical fuel reforming (TFR) with compression ratio in an SI natural gas engine

Fuel ◽  
2017 ◽  
Vol 203 ◽  
pp. 162-170 ◽  
Author(s):  
Zhen Xu ◽  
Lei Zhu ◽  
Zhuoyao He ◽  
Ang Li ◽  
Yu Shao ◽  
...  
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Performance Optimization ◽  
Fuel Reforming ◽  
Gas Engine ◽  
Natural Gas Engine

Effects of Engine Operating Parameters on Lean Combustion Limit of Hydrogen Enhanced Natural Gas Engine

2011 ◽  
Vol 383-390 ◽  
pp. 6116-6121
Author(s):  
Xin Wang ◽  
Hong Guang Zhang ◽  
Yan Lei ◽  
Xiao Lei Bai ◽  
Xiao Na Sun ◽  
...  
Keyword(s):  
Experimental Study ◽  
Natural Gas ◽  
Engine Speed ◽  
Operating Parameters ◽  
Ignition Timing ◽  
Compressed Natural Gas ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Lean Combustion ◽  
Combustion Limit

An experimental study was conducted on a S.I. engine fueled by compressed natural gas and hydrogen blends (HCNG), in order to test different engine operating parameters that affect lean combustion limit (L.C.L) of HCNG engine. Firstly, constant ignition timing and ignition timing under maximum L.C.L (L.L.T) conditions were compared, then L.L.T conditions were adopted in this paper. The results indicated that for each condition, neither over-retarded nor over-advanced ignition timing are advised in order to achieve leaner combustion. L.C.L increases with hydrogen fraction in the blends, and slightly increases with throttle opening, while decreases when the engine speed is raised

Key Parameters Simulation and Design of Natural Gas Engine Based on Diesel

2013 ◽  
Vol 318 ◽  
pp. 584-587
Author(s):  
Meng Xiang Liu ◽  
Xiang Ling Liu ◽  
Jin Ke Gong ◽  
Fei Yang ◽  
Jian Bin Chen
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Valve Timing ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Exhaust Temperature ◽  
Rise Rate ◽  
Research Achievement ◽  
Maximum Rise ◽  
Engine Power

In the paper, the natural gas engine (NGE)model based on AVL BOOST software is built and simulated. The simulation value and experiment value coincide, showing that the NGE model is correct and reasonable. On this basis, the model has been used to analyze the effect of the key parameters, such as compression ratio, ignition advance angle, valve timing, supercharging ratio on the engine power, maximum combustion pressure, exhaust temperature, the maximum rise rate of pressure. Combined with the relevant theories of engine, the value ranges of the key parameters can be designed. The research achievement is valuable in the development and optimization matching of the NGE.

Effects of compression ratio on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratio

Energy ◽  
2013 ◽  
Vol 59 ◽  
pp. 658-665 ◽  
Author(s):  
Jianbiao Zhao ◽  
Fanhua Ma ◽  
Xingwang Xiong ◽  
Jiao Deng ◽  
Lijun Wang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Excess Air

Low Engine Speed Torque Improvement in Natural Gas Engine: Experimental Observations

2020 ◽  
Vol 4 (4) ◽  
pp. 429-444
Author(s):  
Pritesh J. Suple ◽  
Chandrakant R. Sonawane ◽  
S. S. Thipse ◽  
J. P. Mohite ◽  
N. B. Chougule ◽  
...  
Keyword(s):  
Natural Gas ◽  
Engine Speed ◽  
Gas Engine ◽  
Natural Gas Engine

Influence of Compression Ratio on Performance and Variations in Each Cylinder of Multi-Cylinder Natural Gas Engine with PCCI Combustion

2007 ◽  
Author(s):  
Hiroyuki Ohtsubo ◽  
Kazuyuki Yamauchi ◽  
Tohru Nakazono ◽  
Koji Yamane ◽  
Kiyoshi Kawasaki
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Gas Engine ◽  
Natural Gas Engine
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