Numerical simulation of gasoline-fuelled compression ignition combustion with late direct injection

Ra, Youngchul; Yun, Jeong-Eui; Reitz, Rolf D.

doi:10.1504/ijvd.2009.024966

Cited by 27 publications

(12 citation statements)

References 29 publications

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“…It is shown quite reasonable to use iso-octane fuel as gasoline-type fuel and n-heptane fuel as diesel type one (Ra et al, 2009). A Nitrogen oxides mechanism including 12 reactions was used to predict NOx formation (Sun, 2007).…”

Section: Experimental and Simulation Resultsmentioning

confidence: 99%

A Detailed Study of Boost Pressure and Injection Timing on an RCCI Engine Map Fueled with Iso-Octane and N-Heptane Fuels

Fajri

Shamekhi

Rezaie

et al. 2019

JAFM

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By using two types of different fuels and changing the ratios of these fuels, Reactivity Controlled Compression Ignition Engine (RCCI) is able to provide a more effective control over combustion phase at different loads and speeds. In a typical RCCI engine which could be considered as a type of homogeneous charge compression ignition (HCCI) engine, a low reactive fuel is injected into the intake port and a high reactive fuel is directly injected into the combustion chamber. In this study, a multi-dimensional model coupled with chemical mechanism is developed to simulate an RCCI engine operation fueled with iso-octane as the low reactive fuel and n-heptane as the high reactive one. Initially, the engine map was derived using different quantities of total above-mentioned fuels at different ratios and then engine inappropriate operating points were detected and improved by changing intake air pressure and injection timing strategies. The improved criteria to extend engine map are ringing intensity limit, NOx formation standard and gross indicated efficiency. It was concluded that high ringing intensity and NOx formation can be reduced by increasing intake air pressure; also badfire and misfire points can get improved by retarding the injection timing.

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Section: Experimental and Simulation Resultsmentioning

confidence: 99%

A Detailed Study of Boost Pressure and Injection Timing on an RCCI Engine Map Fueled with Iso-Octane and N-Heptane Fuels

Fajri

Shamekhi

Rezaie

et al. 2019

JAFM

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show abstract

“…al. [16], [17], [18], _______________________________________________________________________________________ Volume: 03 Issue: 01 | Jan-2014, Available @ http://www.ijret.org 339 [19] and [20], Ciattiet. al.…”

Section: Results Review Of Single and Multi-cylinder Of Gdci Engine Pmentioning

confidence: 99%

History of Gasoline Direct Compression Ignition (Gdci) Engine- A Review

MeisamAhmadiGhadikolaei¹

2014

IJRET

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The first single-cylinder gasoline direct compression ignition (GDCI) engine was designed and built in 2010 by Delphi Companyfor testing performance, emissions and Brake specific fuel consumption (BSFC). Then after achieving the good results in performance, emissions and BSFCfrom single-cylinder engine, multi-cylinder GDCI engine was built in 2013. The compression ignition engine has limitations such as high noise, weight, PM and NO X emissions compared to gasoline engine. But the high efficiency, torque and better fuel economy of compression ignition engine are the reasons of Delphi Company to use compression ignition strategy for building a new combustion system. The objective of the present review study involves the reasons of building of the GDCI engine in detail.

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“…Note that many studies (e.g. Ra et al 22 ) have shown that the combustion characteristics of gasoline and diesel are represented acceptably by iso-octane (i.e. primary reference fuel (PRF) 100) and n-heptane (i.e.…”

Section: Combustion Modelmentioning

confidence: 99%

Investigation of the sources of combustion instability in low-temperature combustion engines using response surface models

Klos

Kokjohn

2014

International Journal of Engine Research

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In the search for more efficient and cleaner engines, low-temperature combustion engines have emerged with the potential to simultaneously increase engine efficiency and reduce nitrogen oxides and soot emissions. Although promising, low-temperature combustion engines have not been widely implemented due to difficulties controlling combustion phasing, combustion duration, and cycle-to-cycle variation. This article develops a methodology using detailed computational fluid dynamics simulations to investigate cycle-to-cycle instability of homogeneous charge compression ignition and reactivity-controlled compression ignition engines. Using computational fluid dynamics modeling, a large design of experiment is performed with small perturbations to the intake and fueling conditions. A response surface model is then fit to the design of experiment results to predict the combustion characteristics and exercised to determine the main sources of cycle-to-cycle variation. As expected, the results show that reactivity-controlled compression ignition and homogeneous charge compression ignition have significantly more variation than conventional diesel combustion. Reactivity-controlled compression ignition combustion phasing (CA50-crank angle when 50% of fuel is burned) is most sensitive to variations in diesel fuel mass, level of exhaust gas recirculation, and charge gas temperature. The peak pressure rise rate of reactivity-controlled compression ignition combustion is most sensitive to variations in gasoline fuel mass. The sources of variation for homogeneous charge compression ignition are similar to those of reactivity-controlled compression ignition combustion; however, trapped gas pressure and cylinder liner temperature become significant factors. Because of the late combustion phasing required for homogeneous charge compression ignition to maintain acceptable pressure rise rate, its cycle-to-cycle variation was found to be higher than that of reactivity-controlled compression ignition combustion for the same input variations.

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Numerical simulation of gasoline-fuelled compression ignition combustion with late direct injection

Cited by 27 publications

References 29 publications

A Detailed Study of Boost Pressure and Injection Timing on an RCCI Engine Map Fueled with Iso-Octane and N-Heptane Fuels

A Detailed Study of Boost Pressure and Injection Timing on an RCCI Engine Map Fueled with Iso-Octane and N-Heptane Fuels

History of Gasoline Direct Compression Ignition (Gdci) Engine- A Review

Investigation of the sources of combustion instability in low-temperature combustion engines using response surface models

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