Effect of di-tert butyl peroxide (DTBP) on combustion parameters and NOx in dual fuel diesel engine with hydrogen as a secondary fuel

2021 ◽  
Vol 46 (5) ◽  
pp. 4507-4525
Author(s):  
Chandra Bhushan Kumar ◽  
D.B. Lata
Keyword(s):  
Diesel Engine ◽  
Dual Fuel ◽  
Tert Butyl ◽  
Secondary Fuel ◽  
Butyl Peroxide

scholarly journals A Research on the Performance, Emission and Combustion Parameters of the Hydrogen and Biogas Dual Fuel Engine

2020 ◽  
Vol 12 (3) ◽  
pp. 129-136
Author(s):  
Avinash MUTLURI ◽  
Radha Krishna GOPIDESI ◽  
Srinivas Viswanath VALETI
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Thermal Efficiency ◽  
Gaseous Fuel ◽  
Dual Fuel ◽  
Nox Emissions ◽  
Brake Thermal Efficiency ◽  
Secondary Fuel ◽  
Pilot Fuel ◽  
Inlet Manifold

In the present research a diesel engine has been converted to dual fuel mode, injecting hydrogen and biogas as secondary fuel and the tests were conducted in dual fuel mode to evaluate the performance, emissions and combustion parameters of the engine. Diesel as a pilot fuel, hydrogen and biogas as a secondary fuel were injected from the inlet manifold. The hydrogen and the biogas which is a gaseous fuel were injected at 5 liters per minute (lpm) and the tests were conducted separately. From these tests, it was noted that there is an enhancement of 27.28% in brake thermal efficiency (BTE) and increment of 10.70% in NOX emissions for diesel with 5 lpm hydrogen compared with diesel fuel under single fuel mode. Also, it was noted that the reduction in BTE was around 36.50% and NOX emissions about 15.68 % for diesel with 5 lpm biogas when compared with diesel fuel under single fuel mode.

Hydrous Ethanol Steam Reforming and Thermochemical Recuperation to Improve Dual-Fuel Diesel Engine Emissions and Efficiency

2018 ◽  
Author(s):  
Jeffrey T. Hwang ◽  
Seamus P. Kane ◽  
William F. Northrop
Keyword(s):  
Diesel Engine ◽  
Steam Reforming ◽  
Diesel Fuel ◽  
Dual Fuel ◽  
Ethanol Steam Reforming ◽  
Nox Emissions ◽  
Heating Value ◽  
Secondary Fuel ◽  
Hydrous Ethanol ◽  
Ethanol Steam

Dual-fuel strategies can enable replacement of diesel fuel with low reactivity biofuels like hydrous ethanol. Our previous work has shown that dual-fuel strategies using port injection of hydrous ethanol can replace up to 60% of diesel fuel on an energy basis. However, they yield negligible benefits in NOx emissions, soot emissions, and brake thermal efficiency (BTE) over conventional single fuel diesel operation. Pretreatment of hydrous ethanol through steam reforming before mixing with intake air offers the potential to both increase BTE and decrease soot and NOx emissions. Steam reforming can upgrade the heating value of the secondary fuel through thermochemical recuperation (TCR) and produces inert gases to act as a diluent similar to exhaust gas recirculation. This study experimentally investigated a novel thermally integrated steam reforming reactor that uses sensible and chemical energy in the exhaust to provide the necessary heat for hydrous ethanol steam reforming. An off-highway diesel engine was operated at three speed and load settings with varying hydrous ethanol flow rates reaching fumigant energy fractions of up to 70%. The engine achieved soot reductions of close to 90% and minor NOx reductions; however, carbon monoxide and unburned hydrocarbon emissions increased. A first law energy balance using the experimental data shows that efficient TCR effectively upgraded the heating value of the secondary fuel. Overall, hydrous ethanol steam reforming using TCR can lead to 23% increase in fuel heating value at 100% conversion, a limit approached in the conducted experiments.

scholarly journals Effect of Antioxidant and Cetane Improver on Performance and Emissions using Waste Plastic Oil-Diesel Blends As Fuel

2020 ◽  
Vol 9 (4) ◽  
pp. 1616-1619
Keyword(s):  
Ascorbic Acid ◽  
Diesel Engine ◽  
Alternative Fuels ◽  
Waste Plastic ◽  
Tert Butyl ◽  
Waste Plastic Oil ◽  
Plastic Wastes ◽  
Performance And Emissions ◽  
Butyl Peroxide

Among various alternative fuels, waste plastic oil produced from plastic wastes has gained a lot of attention. Diesel along with antioxidant and cetane improver has been analyzed in this study. This trial work dissects the utilization of 100%, 50% of Waste Plastic Oil (WPO) and 48% of Waste Plastic Oil with1% L-ascorbic acid + 1% di-tert-butyl peroxide in diesel engine. For this reason, WPO was created in an exploration office scale arrangement by pyrolysis strategy. Diesel engine tried with WPO with diesel and additives blends and the results were contrasted and diesel. A result verifies the goal of this investigation and indicates improvement in execution and decrease in explicit fuel usage. The decrease in outflow was seen in additives influences on diesel engine than that of wpo diesel blended fuelled diesel engine.

Hydrous Ethanol Steam Reforming and Thermochemical Recuperation to Improve Dual-Fuel Diesel Engine Emissions and Efficiency

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Jeffrey T. Hwang ◽  
Seamus P. Kane ◽  
William F. Northrop
Keyword(s):  
Diesel Engine ◽  
Steam Reforming ◽  
Diesel Fuel ◽  
Dual Fuel ◽  
Ethanol Steam Reforming ◽  
Nox Emissions ◽  
Heating Value ◽  
Secondary Fuel ◽  
Hydrous Ethanol ◽  
Ethanol Steam

Dual-fuel strategies can enable replacement of diesel fuel with low reactivity biofuels like hydrous ethanol. Previous work has shown that dual-fuel strategies using port injection of hydrous ethanol can replace up to 60% of diesel fuel on an energy basis. However, they yield negligible benefits in NOX emissions, soot emissions, and brake thermal efficiency (BTE) over conventional single fuel diesel operation. Pretreatment of hydrous ethanol through steam reforming before mixing with intake air offers the potential to both increase BTE and decrease soot and NOX emissions. Steam reforming can upgrade the heating value of the secondary fuel through thermochemical recuperation (TCR) and produces inert gases to act as a diluent similar to exhaust gas recirculation. This study experimentally investigated a novel thermally integrated steam reforming TCR reactor that uses sensible and chemical energy in the exhaust to provide the necessary heat for hydrous ethanol steam reforming. An off-highway diesel engine was operated at three speed and load settings with varying hydrous ethanol flow rates reaching fumigant energy fractions of up to 70%. The engine achieved soot reductions of close to 90% and minor NOX reductions; however, carbon monoxide and unburned hydrocarbon emissions increased. A first law energy balance using the experimental data shows that the developed TCR system effectively upgraded the heating value of the secondary fuel. Overall, hydrous ethanol steam reforming using TCR can lead to 23% increase in fuel heating value at 100% conversion, a limit approached in the conducted experiments.

RESEARCH OF INDICATORS OF A VEHICLE WITH A DIESEL WORKING ON DIESEL AND DIESEL GAS CYCLES USING THE MATHEMATICAL MODEL

2020 ◽  
pp. 14-19
Author(s):  
Serhii Kovbasenko ◽  
Andriy Holyk ◽  
Serhii Hutarevych
Keyword(s):  
Mathematical Model ◽  
Diesel Engine ◽  
Environmental Performance ◽  
Energy Performance ◽  
Dual Fuel ◽  
Fuel System ◽  
Compressed Natural Gas ◽  
Diesel Vehicles ◽  
Diesel Cycle ◽  
The Mathematical Model

The features of an advanced mathematical model of motion of a truck with a diesel engine operating on the diesel and diesel gas cycles are presented in the article. As a result of calculations using the mathematical model, a decrease in total mass emissions as a result of carbon monoxide emissions is observed due to a decrease in emissions of nitrogen oxides and emissions of soot in the diesel gas cycle compared to the diesel cycle. The mathematical model of a motion of a truck on a city driving cycle according to GOST 20306-90 allows to study the fuel-economic, environmental and energy indicators of a diesel and diesel gas vehicle. The results of the calculations on the mathematical model will make it possible to conclude on the feasibility of converting diesel vehicles to using compressed natural gas. Object of the study – the fuel-economic, environmental and energy performance diesel engine that runs on dual fuel system using CNG. Purpose of the study – study of changes in fuel, economic, environmental and energy performance of vehicles with diesel engines operating on diesel and diesel gas cycles, according to urban driving cycle modes. Method of the study – calculations on a mathematical model and comparison of results with road tests. Bench and road tests, results of calculations on the mathematical model of motion of a truck with diesel, working on diesel and diesel gas cycles, show the improvement of environmental performance of diesel vehicles during the converting to compressed natural gas in operation. Improvement of environmental performance is obtained mainly through the reduction of soot emissions and nitrogen oxides emissions from diesel gas cycle operations compared to diesel cycle operations. The results of the article can be used to further develop dual fuel system using CNG. Keywords: diesel engine, diesel gas engine, CNG

Sign in / Sign up

Export Citation Format

Share Document