Clean, Controlled DI Diesel Combustion Using Dilute, Cool Charge Gas and a Short-Ignition-Delay, Oxygenated Fuel

2005 ◽  
Author(s):  
Ansis Upatnieks ◽  
Charles J. Mueller
Keyword(s):  
Ignition Delay ◽  
Diesel Combustion ◽  
Oxygenated Fuel

scholarly journals Molecular dynamics simulation of soot formation during diesel combustion with oxygenated fuel addition

2020 ◽  
Vol 22 (36) ◽  
pp. 20829-20836
Author(s):  
Cheng Chen ◽  
Xi Jiang
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Constant Temperature ◽  
Soot Formation ◽  
Dynamics Simulation ◽  
Diesel Combustion ◽  
Oxygenated Additives ◽  
Oxygenated Fuel

The morphology of nascent soot and the effect of oxygenated additives on sooting mitigation at a constant temperature of 3000 K.

Diesel Combustion and Control Using a Novel Ignition Delay Model

2018 ◽  
Author(s):  
Reza Rezaei ◽  
Benjamin Tilch ◽  
Thaddaeus Delebinski ◽  
Christoph Bertram
Keyword(s):  
Ignition Delay ◽  
Diesel Combustion ◽  
Delay Model ◽  
And Control

Analysis of the Influence of Pilot Injection Timing on Diesel Combustion in an Optical Engine by the Two-Color Method

2013 ◽  
Author(s):  
Weilin Zeng ◽  
Xu He ◽  
Senjia Jin ◽  
Hai Liu ◽  
Xiangrong Li ◽  
...  
Keyword(s):  
Ignition Delay ◽  
High Speed ◽  
Fuel Injection ◽  
Injection System ◽  
High Speed Photography ◽  
Injection Timing ◽  
Pilot Injection ◽  
Diesel Combustion ◽  
Optical Engine ◽  
Combustion Duration

High-speed photography, two-color method, and thermodynamic analysis have been used to improve understanding of the influence of pilot injection timing on diesel combustion in an optical engine equipped with an electronically-controlled, common rail, high-pressure fuel injection system. The tests were performed at four different pilot injection timings (30 degree, 25 degree, 20 degree, and 15 degree CA BTDC) with the same main injection timing (5 degree CA BTDC), and under 100MPa injection pressure. The engine speed was selected at 1200 rev/min, and the whole injection mass was fixed as 27.4 mg/stroke. The experimental results showed that the pilot injection timing had a strong influence on ignition delay and combustion duration: advancing the pilot injection timing turned to prolong the ignition delay and shorten the combustion duration. The combustion images indicated that when pilot injection was advanced, the area of luminous flames decreased. The results of two-color method suggested pilot injection timing significantly impacted both the soot temperature distribution and soot concentration (KL factor) within the combustion chamber. 30 degree CA BTDC was the optimal pilot injection timing for in-cylinder soot reduction.

Normal Heptane-Diesel Combustion and Odorous Emissions in Direct Injection Diesel Engines

2008 ◽  
Vol 130 (1) ◽  
Author(s):  
Murari Mohon Roy
Keyword(s):  
Diesel Fuel ◽  
Ignition Delay ◽  
Boiling Point ◽  
Direct Injection ◽  
Volatile Components ◽  
Diesel Combustion ◽  
Gas Temperature ◽  
Eye Irritation ◽  
Heat Of Evaporation ◽  
High Latent Heat

This study investigated normal heptane (N-heptane)-diesel combustion and odorous emissions in a direct injection diesel engine during and after engine warmup at idling. The odor is a little worse with N-heptane and blends than that of diesel fuel due to overleaning of the mixture. In addition, formaldehyde (HCHO) and total hydrocarbon (THC) in the exhaust increase with increasing N-heptane content. However, 50% and 100% N-heptane showed lower eye irritation than neat diesel fuel. Due to low boiling point of N-heptane, adhering fuel on the combustion chamber wall is small and as a single-component C7 fuel, relatively high volatile components present in the exhaust are low. This may cause lower eye irritation. On the contrary, bulk in-cylinder gas temperature is lower and ignition delay significantly increases for 50% and 100% N-heptane due to the low boiling point, high latent heat of evaporation, and low bulk modulus of compressibility of N-heptane than standard diesel fuel. This longer ignition delay and lower bulk in-cylinder gas temperature of N-heptane blends deteriorate exhaust odor and emissions of HCHO and THC.

Ultra Low Emission and High Performance Diesel Combustion with Highly Oxygenated Fuel

2000 ◽  
Author(s):  
Md. Nurun Nabi ◽  
Masahiro Minami ◽  
Hideyuki Ogawa ◽  
Noboru Miyamoto
Keyword(s):  
High Performance ◽  
Diesel Combustion ◽  
Low Emission ◽  
Oxygenated Fuel

Effect of Pilot Injection on Diesel Combustion. 1st Report. Reduction of Ignition Delay.

1995 ◽  
Vol 61 (590) ◽  
pp. 3518-3523 ◽  
Author(s):  
Masahiro Ishida ◽  
Zhi-Li Chen ◽  
Hironobu Ueki ◽  
Takeshi Yamada
Keyword(s):  
Ignition Delay ◽  
Pilot Injection ◽  
Diesel Combustion

A study of ignition delay, combustion process and emissions in a high ambient temperature of diesel combustion

Fuel ◽  
2021 ◽  
Vol 297 ◽  
pp. 120706
Author(s):  
Iqbal Shahridzuan Abdullah ◽  
Amir Khalid ◽  
Norrizam Jaat ◽  
Ridwan Saputra Nursal ◽  
Hasan Koten ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Ignition Delay ◽  
Combustion Process ◽  
High Ambient Temperature ◽  
Diesel Combustion
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