Study for Improvement of Diesel Engine Performance using a Combination of Early-injection PCCI and Conventional Diesel Combustion

2018 ◽  
Vol 2018.93 (0) ◽  
pp. 1014
Author(s):  
Kazuki HIRAYAMA ◽  
Takuji YOKOYAMA ◽  
Zhichao Bao ◽  
Naoto HORIBE ◽  
Hiroshi KAWANABE ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Diesel Combustion ◽  
Early Injection

Combustion and Emission Characteristics of Direct-Injection Compression Ignition Engines by Means of Two-Stage Split and Early Fuel Injection

2002 ◽  
Vol 124 (3) ◽  
pp. 660-667 ◽  
Author(s):  
K. Yamane ◽  
Y. Shimamoto
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection System ◽  
Emission Characteristics ◽  
Diesel Combustion ◽  
Compression Ignition ◽  
Two Stage ◽  
Di Diesel Engine ◽  
Early Injection

The objective of this study was to experimentally clarify the effect of two-stage split and early injection on the combustion and emission characteristics of a direct-injection (DI) diesel engine. Engine tests were carried out using a single-cylinder high-speed DI diesel engine and an injection system, combining an ordinary jerk pump and an electronically controlled high-pressure injection system, KD-3. In these experiments to compare the combustion and exhaust emission characteristics with two-stage split and early injection, a single-stage and early injection was tested. The FT-IR exhaust-gas analyzer simultaneously measured the exhaust emissions of 26 components. The results showed that HCHO, CH3CHO, and CH3COOH were emitted during the very early stage of both single injection and two-stage injection. These concentrations were higher than those from diesel combustion with ordinary fuel injection timings. These exhaust emissions are characteristic components of combustion by premixed compression ignition with extremely early injection. In particular, the HCHO concentration in exhaust was reduced with an increase in the maximum rate of heat release after cool flame due to pre-reaction of pre-mixture. At extremely early injection, the NOx concentration was extremely low; however, the indicated specific fuel consumption (ISFC) was higher than that of ordinary diesel combustion. In the case of two-stage injection, the degree of constant volume is increased, so that ISFC is improved. These results also demonstrated the possibility of reducing HCHO, NOx, and smoke emissions by means of two-stage split and early injection.

Influence of oxygen enriched hydrogen gas as a combustion catalyst in a DI diesel engine operating with varying injection time of a diesel fuel

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30583-30591 ◽  
Author(s):  
S. R. Premkartikkumar
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Hydrogen Gas ◽  
Diesel Combustion ◽  
Injection Time ◽  
Combustion Catalyst ◽  
Di Diesel Engine

The addition of OEH gas in diesel combustion at the retarded injection time of diesel fuel enhances engine performance and reduces engine-out emissions.

Effect of Gasoline Fumigation on Diesel Engine Performance and Emissions

2011 ◽  
Vol 130-134 ◽  
pp. 1744-1748
Author(s):  
Li Jun Ou ◽  
Chun Mei Wang ◽  
Ye Jian Qian ◽  
Wei Huang ◽  
Su Wei Zhu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Nox Emissions ◽  
Smoke Emission ◽  
Single Cylinder ◽  
Performance And Emissions ◽  
High Volatility ◽  
Gasoline Fumigation ◽  
Engine Performance And Emissions ◽  
Early Injection

The present study investigates theoretically the effects of gasoline fumigation on single-cylinder diesel engine performance and emissions. The results indicate that a premixed charge can be obtained by early injection of gasoline because of the high volatility of gasoline. More homogenous mixture was obtained and the fuel burned faster and efficient. The smoke emission was reduced and engine output was increased. Coupling with EGR technique could reduce the NOx emissions simultaneously.

Effect of Continuous Hydrogen Injection on Diesel Engine Performance and Emission

2017 ◽  
Vol 11 (4) ◽  
pp. 213
Author(s):  
Mohamad Nordin Mohamad Norani ◽  
Boon Tuan Tee ◽  
Zakaria Muhammad Zulfattah ◽  
Mohamad Norani Mansor ◽  
Md Isa Ali
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Performance And Emission

Diesel Engine Performance with Karanja Biodiesel Oil by Using TOPSIS Method

2020 ◽  
Author(s):  
Mukul Agarwal ◽  
Shailendra Kumar ◽  
Bhupendra Singh Chauhan
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Topsis Method

Improving diesel engine performance and emissions characteristics fuelled with biodiesel

Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121097
Author(s):  
M. Mourad ◽  
Khaled R.M. Mahmoud ◽  
El-Sadek H. NourEldeen
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Performance And Emissions ◽  
Engine Performance And Emissions

scholarly journals Thermal Performance of Compression Ignition Engine Using High Content Biodiesels: A Comparative Study with Diesel Fuel

2021 ◽  
Vol 13 (14) ◽  
pp. 7688
Author(s):  
Asif Afzal ◽  
Manzoore Elahi M. Soudagar ◽  
Ali Belhocine ◽  
Mohammed Kareemullah ◽  
Nazia Hossain ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Fatty Acid Content ◽  
Engine Performance ◽  
Waste Cooking Oil ◽  
Gas Temperature ◽  
Compression Ignition Engine ◽  
Brake Thermal Efficiency ◽  
Acid Oil ◽  
Exhaust Gas Temperature

In this study, engine performance on thermal factors for different biodiesels has been studied and compared with diesel fuel. Biodiesels were produced from Pongamia pinnata (PP), Calophyllum inophyllum (CI), waste cooking oil (WCO), and acid oil. Depending on their free fatty acid content, they were subjected to the transesterification process to produce biodiesel. The main characterizations of density, calorific range, cloud, pour, flash and fire point followed by the viscosity of obtained biodiesels were conducted and compared with mineral diesel. The characterization results presented benefits near to standard diesel fuel. Then the proposed diesel engine was analyzed using four blends of higher concentrations of B50, B65, B80, and B100 to better substitute fuel for mineral diesel. For each blend, different biodiesels were compared, and the relative best performance of the biodiesel is concluded. This diesel engine was tested in terms of BSFC (brake-specific fuel consumption), BTE (brake thermal efficiency), and EGT (exhaust gas temperature) calculated with the obtained results. The B50 blend of acid oil provided the highest BTE compared to other biodiesels at all loads while B50 blend of WCO provided the lowest BSFC compared to other biodiesels, and B50 blends of all biodiesels provided a minimum % of the increase in EGT compared to diesel.

scholarly journals Support vector machine for a diesel engine performance and NOx emission control-oriented model

2020 ◽  
Vol 53 (2) ◽  
pp. 13976-13981
Author(s):  
Masoud Aliramezani ◽  
Armin Norouzi ◽  
Charles Robert Koch
Keyword(s):  
Support Vector Machine ◽  
Diesel Engine ◽  
Emission Control ◽  
Engine Performance ◽  
Nox Emission ◽  
Support Vector
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