Influence of air intake pipe on engine exhaust emission

Shannak, B. A.; Damseh, R.; Alhusein, M.

doi:10.1007/s10010-006-0022-8

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…With both ultra-low sulfur diesel (ULSD) and rapeseed methyl ester (RME), the engine combustion and emissions are affected by the magnitude of the inlet manifold pressure drop (Pulkrabek, 2004). The consequences of reducing engine altitude, increasing air intake pipe diameter, increasing atmospheric pressure and increasing engine speed are the reduction of both carbon monoxide (CO) and hydrocarbon (HC) with constant oxygen (O 2 ) and carbon dioxide (CO 2 ) (Shannak, Damseh, & Alhusein, 2005;. HC emission reduction is due to an improved combustion process caused by larger air intake pipe diameter and higher engine speed.…”

Section: Introductionmentioning

confidence: 99%

Effects of Air Intake Pressure on the Engine Performance, Fuel Economy and Exhaust Emissions of A Small Gasoline Engine

Abdullah¹,

Shahruddin²,

Mamat³

et al. 2014

J MECH ENG SCI

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This study presents the engine performance, fuel economy and exhaust emissions at variations of air intake pressure. In a carburetor system, the air intake pressure is influenced by the degree of opening throttle plate and the Venturi effect which draws the fuel to the combustion chamber. The experimental work was carried out on variations of engine speed and load using a single cylinder four stroke gasoline engine attached to a dynamometer. The measured exhaust emission compositions are used to determine the mode of combustion. The results show that the standard air intake system resulted in rich combustion which then led to incomplete combustion, which was caused by less availability of air for the combustion process. Eliminating the air filter reduces the air flow restriction in the air intake system resulting in better combustion and less unburned components due to higher air availability. Higher air intake pressure is better at increasing the efficiency of combustion within a limited time to improve fuel economy, power output and exhaust emissions. Better combustion also leads to reduced unburned components such as carbon (C), hydrogen (H 2 ), carbon monoxide (CO) and hydroxide (OH), which results in cleaner emissions.

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Section: Introductionmentioning

confidence: 99%

Effects of Air Intake Pressure on the Engine Performance, Fuel Economy and Exhaust Emissions of A Small Gasoline Engine

Abdullah¹,

Shahruddin²,

Mamat³

et al. 2014

J MECH ENG SCI

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“…Shannak et al [61] studied the exhaust emissions of a gasoline engine as a function of the pressure drop of the intake system, the value of which was modeled by using different diameters of the intake pipes of the ambient air. The study was carried out by varying the engine speed in the range of n = 1000-4000 rpm.…”

Section: Air Streammentioning

confidence: 99%

Empirical study of the effect of the air filter on the performance and exhaust emissions of a diesel engine

Dziubak¹,

Karczewski²,

Dziobek³

2023

Combustion Engines

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The results of an experimental study of the effect of the pressure drop of the air filter pf on the operat-ing parameters and exhaust emissions of a modern CI internal combustion engine of a truck equipped with an electronically controlled power system are presented. The tests were carried out for an air filter with a clean filter cartridge Δpf0 = 0,58 kPa and with a cartridge contaminated after a service mileage (about 50 thousand km) ΔpfD = 2,024 kPa. In each test, engine performance, exhaust emissions and relative change in emissions were determined: CO, NOx, HC, CO2, H2O. It was found that an increase in the filter resistance pf causes a decrease in the filling degree by 12%, engine useful power by almost 10%, exhaust gas temperature by a maximum of 30oC and an increase in specific fuel consumption by almost 5%. Air filter resistance has no significant effect on NOx emissions and HC concentration. There is a reduction in H2O emissions by up to 7%, CO by up to 13% and CO2 by up to 4%, and an increase in oxygen emissions by 15%, depending on operating conditions.

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“…The higher pressure drop when the engine is operated with an air filter reduces NOx formation. Shannak et al [73] measured the exhaust emissions of a four-cylinder, four-stroke gasoline engine as a function of the pressure drop of the intake system, the value of which was varied using different air inlet pipe diameters: 20, 25, 30, 35, 40 and 63 mm. The tests were conducted at engine speeds ranging from 1000 to 4000 rpm.…”

Section: Literature Analysis On the Effect Of Intake System Pressure ...mentioning

confidence: 99%

“…The results for a Dodge Ram 2500 Truck-6.7 L (2007) with a 6.7 dm 3 inline six-cylinder engine with variable geometry turbocharging, six-speed automatic transmission, a diesel particulate filter (DPF) and a NOx reduction system (LNT) are shown in Figure 4. An increase in air filter pressure drop from 0.3 kPa to 3.9 kPa and then Shannak et al [73] measured the exhaust emissions of a four-cylinder, four-stroke gasoline engine as a function of the pressure drop of the intake system, the value of which was varied using different air inlet pipe diameters: 20, 25, 30, 35, 40 and 63 mm. The tests were conducted at engine speeds ranging from 1000 to 4000 rpm.…”

Section: Literature Analysis On the Effect Of Intake System Pressure ...mentioning

confidence: 99%

Experimental Studies of the Effect of Air Filter Pressure Drop on the Composition and Emission Changes of a Compression Ignition Internal Combustion Engine

Dziubak

Karczewski

2022

Energies

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This paper presents an experimental evaluation of the effect of air filter pressure drop on the composition of exhaust gases and the operating parameters of a modern internal combustion Diesel engine. A literature analysis of the methods of reducing the emission of toxic components of exhaust gases from SI engines was conducted. It has been shown that the air filter pressure drop, increasing during the engine operation, causes a significant decrease in power output and an increase in fuel consumption, as well as smoke emission of Diesel engines with the classical injection system with a piston (sectional) in-line injection pump. It has also been shown, on the basis of a few literature studies, that the increase in the resistance of air filter flow causes a change in the composition of car combustion engines, with the effect of the air filter pressure drop on turbocharged engines being insignificant. A programme, and conditions of tests, on a dynamometer of a modern six-cylinder engine with displacement Vss = 15.8 dm3 and power rating 226 kW were prepared, regarding the influence of air filter pressure drop on the composition of exhaust gases and the parameters of its operation. For each technical state of the air filter, in the range of rotational speed n = 1000–2100 rpm, measurements of exhaust gas composition and emission were carried out, as well as measurements and calculations of engine-operating parameters, namely that of effective power. An increase in the pressure drop in the inlet system of a modern Diesel truck engine has no significant effect on the emissions of CO, CO2, HC and NOx to the atmosphere, nor does it cause significant changes in the degree of smoke opacity of exhaust gases in relation to its permissible value. An increase in air filter pressure drop from value Δpf = 0.580 kPa to Δpf = 2.024 kPa (by 1.66 kPa) causes a decrease in the maximum filling factor value from ηu = 2.5 to ηu = 2.39, that is by 4.5%, and a decrease in maximum power by 8.8%.

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Influence of air intake pipe on engine exhaust emission

Cited by 10 publications

References 9 publications

Effects of Air Intake Pressure on the Engine Performance, Fuel Economy and Exhaust Emissions of A Small Gasoline Engine

Effects of Air Intake Pressure on the Engine Performance, Fuel Economy and Exhaust Emissions of A Small Gasoline Engine

Empirical study of the effect of the air filter on the performance and exhaust emissions of a diesel engine

Experimental Studies of the Effect of Air Filter Pressure Drop on the Composition and Emission Changes of a Compression Ignition Internal Combustion Engine

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