Combustion Control through the DME Injection Timing in the Hydrogen-DME Partially Premixed Compression Ignition Engine

Homogeneous charge compression ignition (HCCI) has been considered as an ideal combustion mode for compression ignition (CI) engines due to its superb thermal efficiency and low emissions of nitrogen oxides (NOx) and particulate matter. However, a challenge that limits practical applications of HCCI is the lack of control over the combustion rate. Fuel stratification and partially premixed combustion (PPC) have considerably improved the control over the heat release profile with modulations of the ratio between premixed fuel and directly injected fuel, as well as injection timing for ignition initiation. It leverages the advantages of both conventional direct injection compression ignition and HCCI. In this study, neat n-butanol is employed to generate the fuel stratification and PPC in a single cylinder CI engine. A fuel such as n-butanol can provide additional benefits of even lower emissions and can potentially lead to a reduced carbon footprint and improved energy security if produced appropriately from biomass sources. Intake port fuel injection (PFI) of neat n-butanol is used for the delivery of the premixed fuel, while the direct injection (DI) of neat n-butanol is applied to generate the fuel stratification. Effects of PFI-DI fuel ratio, DI timing, and intake pressure on the combustion are studied in detail. Different conditions are identified at which clean and efficient combustion can be achieved at a baseline load of 6 bar IMEP. An extended load of 14 bar IMEP is demonstrated using stratified combustion with combustion phasing control.

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DE1-3: Combustion Control in DI Compression Ignition Engine with Partially Premixed Charge Operation Using Flashing Spray of Mixed Fuel(DE: Diesel Engine Combustion,General Session Papers)

The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines ◽

10.1299/jmsesdm.2008.7.151 ◽

2008 ◽

Vol 2008.7 (0) ◽

pp. 151-158 ◽

Cited By ~ 2

Author(s):

Yoshimitsu Wada ◽

Noriyuki Magara ◽

Jiro Senda ◽

Hajime Gen Fujimoto

Keyword(s):

Diesel Engine ◽

Compression Ignition ◽

Combustion Control ◽

Compression Ignition Engine ◽

General Session ◽

Mixed Fuel ◽

Engine Combustion ◽

Partially Premixed

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Effect of Injection Timing and Injection Duration of Manifold Injected Fuels in Reactivity Controlled Compression Ignition Engine Operated with Renewable Fuels

Energies ◽

10.3390/en14154621 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4621

Author(s):

P. A. Harari ◽

N. R. Banapurmath ◽

V. S. Yaliwal ◽

T. M. Yunus Khan ◽

Irfan Anjum Badruddin ◽

...

Keyword(s):

Nitric Oxide ◽

Injection Timing ◽

Compression Ignition ◽

Cylinder Pressure ◽

Compression Ignition Engine ◽

Compressed Natural Gas ◽

Reactivity Controlled Compression Ignition ◽

Brake Thermal Efficiency ◽

Injection Duration ◽

Fuel Mixtures

In the current work, an effort is made to study the influence of injection timing (IT) and injection duration (ID) of manifold injected fuels (MIF) in the reactivity controlled compression ignition (RCCI) engine. Compressed natural gas (CNG) and compressed biogas (CBG) are used as the MIF along with diesel and blends of Thevetia Peruviana methyl ester (TPME) are used as the direct injected fuels (DIF). The ITs of the MIF that were studied includes 45°ATDC, 50°ATDC, and 55°ATDC. Also, present study includes impact of various IDs of the MIF such as 3, 6, and 9 ms on RCCI mode of combustion. The complete experimental work is conducted at 75% of rated power. The results show that among the different ITs studied, the D+CNG mixture exhibits higher brake thermal efficiency (BTE), about 29.32% is observed at 50° ATDC IT, which is about 1.77, 3.58, 5.56, 7.51, and 8.54% higher than D+CBG, B20+CNG, B20+CBG, B100+CNG, and B100+CBG fuel combinations. The highest BTE, about 30.25%, is found for the D+CNG fuel combination at 6 ms ID, which is about 1.69, 3.48, 5.32%, 7.24, and 9.16% higher as compared with the D+CBG, B20+CNG, B20+CBG, B100+CNG, and B100+CBG fuel combinations. At all ITs and IDs, higher emissions of nitric oxide (NOx) along with lower emissions of smoke, carbon monoxide (CO), and hydrocarbon (HC) are found for D+CNG mixture as related to other fuel mixtures. At all ITs and IDs, D+CNG gives higher In-cylinder pressure (ICP) and heat release rate (HRR) as compared with other fuel combinations.

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Effect of Partially Premixed Fuel on Performance and Emission Characteristics of Compression Ignition (CI) Engine

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.d1035.1284s219 ◽

2019 ◽

Vol 8 (4S2) ◽

pp. 163-166

Keyword(s):

Diesel Engine ◽

New Technology ◽

Control Unit ◽

Injection Timing ◽

Emission Characteristics ◽

Compression Ignition ◽

Fuel Injector ◽

Si Engine ◽

Performance And Emission ◽

Partially Premixed

In this world, the population is increased and the number of vehicles increased. Not only population the pollution is increased lot by vehicles in the world harmful pollutant is realized from the vehicles like CO, HC, NOx and smoke particulates. It is inevitable to find some new technology, which increases the better performance and emission characteristics. Partially premixed compression ignition (PCCI) is the best technology for the reducing of harmful pollution in the vehicle, which uses the diesel as fuel it, gives the advantages of both CI and SI engine. This paper investigates the performance and emission characteristics of partially premixed diesel engine. Diesel engine has two injectors of port fuel injector (PFI) and direct injector (DI) to inject the fuel in different timing and electrical control unit (ECU) passes the power to PFI; it can control the injection timing and increases the fuel content from the fuel pump. The main aim in this paper is studied is effect of partially premixed ratio, performance of engine and emission characteristics of diesel engine

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