Impact of EGR and engine speed on HCCI engine performance and tail pipe emissions

Hassan, A.O.; Abu-Jrai, A.; Al-Muhatseb, Ala’a H.; Jamil, Farrukh

doi:10.1016/j.egypro.2017.10.321

Cited by 15 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Internal EGR can be achieved by modifying the duration of overlap of the exhaust valve, while external EGR can be achieved by regulating the EGR and the backpressure of the exhaust valve. The engine burning rate, ignition timing, and NO x emission can be improved with the help of EGR, as suggested by Nakano et al 118 ; Li et al 119 ; Hassan et al 120 ; Maurya and Saxena. 121 The EGR has specific impacts on HCCI combustion, such as the impact on preheat, dilution, heat capacity, and chemical reaction.…”

Section: Effect Of Egrmentioning

confidence: 99%

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

The current study presents research investigations and developments related to the homogeneous charge compression ignition (HCCI) engine. Research investigations and recent advances, including the role of various operating conditions on HCCI engine combustion phenomena, emissions, and performance, are discussed. There is growing research interest in investigating HCCI engines with diesel fuel to study combustion, emissions, and performance characteristics due to their association with low NOx emissions. In the published literature, research investigations are also conducted with different fuels ranging from biomass to diesel to gasoline in the HCCI engine showing its capability for utilizing various fuels in coming years. The challenges associated with HCCI combustion are reviewed, and the details of excessive carbon monoxide and unburnt hydrocarbon emissions are discussed. The major parameters affecting the hydrogen addition in HCCI diesel engines are also discussed. Overall, adding hydrogen to a diesel‐fueled HCCI engine improves combustion phasing and can potentially increase thermal efficiency while lowering emissions. In addition, the strength, weaknesses, opportunities, and threat analysis is provided and discussed thoroughly.

show abstract

Section: Effect Of Egrmentioning

confidence: 99%

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

show abstract

“…EGR systems can be used in HCCI [8] and PCCI engines [9] and in CI engines applied in hybrid vehicles [10][11][12][13].…”

Section: Role Of Egr Technologymentioning

confidence: 99%

Effect of deposition of carbon deposits on charge flow in EGR valve in CI engine

Woźniak¹,

Siczek²,

Zakrzewski³

et al. 2022

Combustion Engines

View full text Add to dashboard Cite

The exhaust gas recirculation (EGR) valve regulates the exhaust gas flow between the engine exhaust manifold and the inlet one. This allows the inlet air to warm up, improving fuel evaporation and reducing the combustion temperature of the charge. Such a valve reduces the number of harmful substances in the exhaust gas. The valve sticks when too much sediment builds on the walls of the exhaust system, especially during driving in urban conditions or when leaks in the vacuum or exhaust pipes occur. A faulty valve causes the engine to run unevenly at idle speed and under light loads. The defective EGR valve weakens the inlet manifold capacity, increases combustion, clogging of the particulate filter, damage to the lambda probe. A blocked EGR valve may lead to engine immobilization as a result of the operation of its computerized control system. A model of the EGR valve of a selected diesel engine was developed to determine the velocity distribution of the load flowing in it for different values of the degree of valve opening and the volume of deposits on the valve walls. The volume of accumulated carbon deposits on the walls of the EGR valve was measured using a real engine. Based on the recorded mileage of the vehicle, the assumed average speed of the car, and the driving style of the driver, the intensity of deposition of carbon particles on the walls was estimated.

show abstract

“…It can be observed that, when a heterogeneous catalyst was used for biodiesel production, the reaction time was quite (120-240 min) high due to the phase difference to get the maximum biodiesel yield. Similarly, it was also relatively high (9)(10)(11)(12)(13)(14)(15)(16)(17)(18) for the methanol-to-oil molar ratio to complete triglycerides into methyl esters (biodiesel). Therefore, in the current study, as shown in the parametric analysis, the reaction time and methanol-to-oil molar ratio were relatively less, which could be related to the fact that the synthesised catalyst acted as highly active due to the high alkalinity, as shown in Table 3, due to addition of Cs 2 O as the active alkali oxide.…”

Section: Reusabilitymentioning

confidence: 99%

“…Over time, several techniques have developed to utilise biomass for energy production through several routes, including gasification, pyrolysis and oil extraction. It has been reported that oil extracted from a biomass can be used as a fuel in the forms of blends with fossil fuel, as well as used directly [ 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Utilisation of Non-Edible Source (Pongamia pinnata Seeds Shells) for Producing Methyl Esters as Cleaner Fuel in the Presence of a Novel Heterogeneous Catalyst Synthesized from Waste Eggshells

Al-Muhtaseb

2021

Molecules

View full text Add to dashboard Cite

Waste eggshells were considered for synthesising a precursor (CaO) for a heterogeneous catalyst, further impregnated by alkali caesium oxide (Cs2O). The following techniques were used to characterise the synthesised catalysts: X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and Temperature Programmed Desorption (CO2-TPD). The synthesised catalyst revealed its suitability for transesterification to produce biodiesel. The biodiesel production process was optimised, and it showed that the optimal biodiesel yield is 93.59%. The optimal set of process parameters is process temperature 80 °C, process time 90 min, methanol-to-oil molar ratio 8 and catalyst loading 3 wt.%. It has been found that the high basicity of the catalyst tends to give a high biodiesel yield at low methanol-to-oil ratio 8 when the reaction time is also less (90 min). The fuel properties of biodiesel also satisfied the standard limits defined by ASTM and the EN standards. Thus, the synthesised catalyst from waste eggshells is highly active, improved the biodiesel production conditions and PPSS oil is a potential nonedible source.

show abstract

Impact of EGR and engine speed on HCCI engine performance and tail pipe emissions

Cited by 15 publications

References 12 publications

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Effect of deposition of carbon deposits on charge flow in EGR valve in CI engine

Utilisation of Non-Edible Source (Pongamia pinnata Seeds Shells) for Producing Methyl Esters as Cleaner Fuel in the Presence of a Novel Heterogeneous Catalyst Synthesized from Waste Eggshells

Contact Info

Product

Resources

About