A dual-fuel compression ignition engine – distinctive features

Luft, S.

doi:10.19206/ce-117144

Cited by 3 publications

(2 citation statements)

References 6 publications

(8 reference statements)

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“…Increasing the share of LPG in the fuel results in an undesirable knock. The reason for this is the rapid auto-ignition of the homogenius mixture in a large volume from the flame of burning diesel oil [1]. Additional evaporated LPG supply system works in a similar way as such systems in spark-ignition engines.…”

Section: Systems Using Lpg In Road Transportmentioning

confidence: 99%

The Possibility of Co-Combustion of Gaseous Fuel in Compression Ignition Engines

Kneba

2016

AMM

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The article presents an analysis of the possibilities of co-combustion of two fuels in truck diesel engines. The goal of usage two different fuels is to lower coast of exploitation heavy duty trucks and buses. The two systems were introduced In first the ignition in cylinder is initiated by diesel oil small dose then main dose of methane is burned. In the alternative system the share of diesel oil is much greater and the mixture of propane butane is only additional fuel. Measurement results of first inwestigations has been presented. The important remarks about setting pilot injection dose and injection time angle were munched.

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Section: Systems Using Lpg In Road Transportmentioning

confidence: 99%

The Possibility of Co-Combustion of Gaseous Fuel in Compression Ignition Engines

Kneba

2016

AMM

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“…According to the author[3], the CO emissions could be reduced with an earlier injection period, which would promote a better rate of CO emissions decomposition and oxidation. Rise of CO when the LPG proportion increases is caused by not optimal injection timing for dual fuel mode[9].…”

mentioning

confidence: 99%

Numerical methodology for evaluation the combustion and emissions characteristics on WLTP in the light duty dual-fuel diesel vehicle

Kneba¹,

Stepanenko²,

Rudnicki³

2021

Combustion Engines

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The worldwide aim of reducing environmental impact from internal combustion engines bring more and more stringent emission regulations. In 2017 by EU has been adopted new harmonized test procedure called WLTP. In general terms this test was designed for determining the levels of harmful emissions and fuel consumption of traditional and hybrid cars. This procedure contains specific driving scenarios which representing real-life driving patterns. Test cycles contain vehicle velocity versus time profiles and directly in powertrain analysis on the test benches cannot be used. In order to back calculate drive cycles to engine rpm versus torque profiles a simple longitudinal vehicle dynamics method was used in this paper. Moreover, in order to determine most representative engine operation points duing WLTP a density based grid clustering method was implemented. The experimental part of the study focuses on the comparative evaluation of the effect of various diesel to LPG substitution ratios (0% LPG, 10% LPG, 20% LPG and 30% LPG) on combustion and emission characteristics of dual-fuel diesel engine.

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Effects of Injection Timing of Diesel Fuel on Performance and Emission of Dual Fuel Diesel Engine Powered by Diesel/E85 Fuels

et al. 2018

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The paper presents the results of the investigation of Dual Fuel (DF) diesel engines powered by high bioethanol contain fuel – E85. The object of the investigation is a three-cylinder Compression Ignition (CI) Internal Combustion Engine (ICE) powered by diesel oil and bioethanol fuel E85 injected into the intake port as a DF engine. With the increase in the share of E85 fuel the highest intensification of the combustion process takes place in the main stage of the combustion and the ignition delay increases as well. The researchers are conducted using Computational Fluid Dynamics (CFD) method; the results of the investigation are successfully verified based on the indicator diagrams, heat performance rate and emissions. Based on CFD results the cross sections investigation of the combustion chamber it can be seen that in case of the DF engine, the flame front propagates with a higher speed. The initial phase of the combustion starts in a different location of the combustion chamber than in the classic CI engine. Replacement of diesel fuel by E85 in 20% resulted in the shortening of the combustion duration more than 2-times. With the increase of energetic share in E85 the soot emission is decreased at all ranges of the analysed operations of the engine. The oppositerelationship was observed in case of NO emission. With the increase of E85 in the fuel, the emission of NO increased.

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A dual-fuel compression ignition engine – distinctive features

Cited by 3 publications

References 6 publications

The Possibility of Co-Combustion of Gaseous Fuel in Compression Ignition Engines

The Possibility of Co-Combustion of Gaseous Fuel in Compression Ignition Engines

Numerical methodology for evaluation the combustion and emissions characteristics on WLTP in the light duty dual-fuel diesel vehicle

Effects of Injection Timing of Diesel Fuel on Performance and Emission of Dual Fuel Diesel Engine Powered by Diesel/E85 Fuels

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