TY - CHAP
T1 - Advanced Combustion in Natural Gas-Fueled Engines
AU - Azimov, Ulugbek
AU - Kawahara, Nobuyuki
AU - Tsuboi, Kazuya
AU - Tomita, Eiji
PY - 2018/11/4
Y1 - 2018/11/4
N2 - Current energy and emission regulations set the requirements to increase the use of natural gas in engines for transportation and power generation. The characteristics of natural gas are high octane number, less amount of carbon in the molecule, suitable to lean combustion, less ignitibility, etc. There are some advantages of using natural gas for engine combustion. First, less carbon dioxide is emitted due to its molecular characteristics. Second, higher thermal efficiency is achieved owing to the high compression ratio compared to that of gasoline engines. Natural gas has higher octane number so that knock is hard to occur even at high compression ratios. However, this becomes a disadvantage in homogeneous charge compression ignition (HCCI) engines or compression ignition engines because the initial auto-ignition is difficult to be achieved. When natural gas is used in a diesel engine, primary natural gas–air mixture is ignited with small amount of diesel fuel. It was found that under high pressure, lean conditions, and with the control of certain parameters, the end gas is auto-ignited without knock and improves the engine combustion efficiency. Recently, some new fuel ignition technologies have been developed to be applied to natural gas engines. These are the laser-assisted and plasma-assisted ignition systems with high energy and compact size.
AB - Current energy and emission regulations set the requirements to increase the use of natural gas in engines for transportation and power generation. The characteristics of natural gas are high octane number, less amount of carbon in the molecule, suitable to lean combustion, less ignitibility, etc. There are some advantages of using natural gas for engine combustion. First, less carbon dioxide is emitted due to its molecular characteristics. Second, higher thermal efficiency is achieved owing to the high compression ratio compared to that of gasoline engines. Natural gas has higher octane number so that knock is hard to occur even at high compression ratios. However, this becomes a disadvantage in homogeneous charge compression ignition (HCCI) engines or compression ignition engines because the initial auto-ignition is difficult to be achieved. When natural gas is used in a diesel engine, primary natural gas–air mixture is ignited with small amount of diesel fuel. It was found that under high pressure, lean conditions, and with the control of certain parameters, the end gas is auto-ignited without knock and improves the engine combustion efficiency. Recently, some new fuel ignition technologies have been developed to be applied to natural gas engines. These are the laser-assisted and plasma-assisted ignition systems with high energy and compact size.
KW - Low Temperature Combustion
KW - heavy duty diesel engines
KW - alternative fuels
KW - power generation applications
KW - natural gas fueling
KW - combustion engine technology
U2 - 10.1007/978-981-13-3307-1_8
DO - 10.1007/978-981-13-3307-1_8
M3 - Chapter
SN - 9789811333064
T3 - Energy, Environment, and Sustainability
SP - 215
EP - 250
BT - Natural Gas Engines
A2 - Srinivasan, Kalyan Kumar
A2 - Agarwal, Avinash Kumar
A2 - Krishnan, Sundar Rajan
A2 - Mulone, Vincenzo
PB - Springer
ER -