Effects on Fuel Economy and NOx Emission Using Stratified Charge and EGR System for a Single Cylinder Motorcycle Engine

2008 ◽  
Author(s):  
Kouji Takasu ◽  
Hisatoshi Kinoshita ◽  
Ryusuke Kato
Keyword(s):  
Fuel Economy ◽  
Nox Emission ◽  
Stratified Charge ◽  
Single Cylinder ◽  
Motorcycle Engine

Evaluating the outcomes of a single-cylinder CRDI engine operated by lemon peel oil under the influence of DTBP, rice husk nano additive and water injection

2021 ◽  
pp. 146808742110477
Author(s):  
Mebin Samuel Panithasan ◽  
Gnanamoorthi Venkadesan
Keyword(s):  
Rice Husk ◽  
Diesel Fuel ◽  
Water Injection ◽  
Nox Emission ◽  
Single Cylinder ◽  
Lemon Peel ◽  
Bio Oil ◽  
Butyl Peroxide ◽  
Lemon Peel Oil ◽  
Peel Oil

In the search for an alternative energy source with lesser pollution for transportation needs, bio-oil, a denser and viscous fuel that needs a transesterification process, have been widely considered for diesel engines. However, these problems are solved by using low viscous biofuel, but this improvement also significantly leads to increased NOx emission. Hence this present study investigates the usage of a low viscous biofuel in the CRDI engine with measures to reduce NOx emission through water injection technique. The low viscous bio-oil was used in this study along with an ignition enhancer (di-tert-butyl-peroxide), non-metallic nano additive (rice husk). They were tested in a constant speed, single-cylinder, diesel engine for various loads. Considering the brake thermal efficiency (BTE), 2% and 150 ppm were selected as the optimum value after testing five ratios (1%, 1.5%, 2%, 2.5% and 3%) of di tert butyl peroxide (DTBP) and four ratios (50, 100, 150 and 200 ppm) of rice husk (RH). The lemon peel oil (LPO) with the optimum additive ratio produced 30.69% BTE, which was 4.7% lesser than diesel fuel. A considerable decrease in fuel consumption and emissions except for nitrogen oxides (NOx) is recorded. NOx emission increased by 17.3% for the biofuel blend containing RH and DTBP. To control NOx emission, 2% of water was injected into the intake manifold with the fresh intake air. Two percent by vol. was finalised after experimenting four ratios (1%, 2%, 3% and 4%) of water addition. This 2% water reduces 11% of NOx emission and affects the other outputs, denoted with the 8.9% reduced BTE value compared with diesel fuel. Thus, the LPOC combination proved to operate well in the CRDI engine and produces lower NOx emissions than other LPO blends.

Evaluation of Biodiesel Blends in a Single-Cylinder Medium-Speed Diesel Engine

2005 ◽  
Author(s):  
Fan Su ◽  
Malcolm Payne ◽  
Manuel Vazquez ◽  
Peter Eggleton ◽  
Alex Vincent
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Performance ◽  
Injection Pressure ◽  
Frying Oil ◽  
Nox Emissions ◽  
Biodiesel Blends ◽  
Single Cylinder ◽  
Additional Information ◽  
Medium Speed

Biodiesel blends were prepared by mixing low sulphur #2 diesel and biodiesel of two origins (canola and frying oil) at two different concentrations (5% and 20%). They were tested in a single-cylinder four-stroke medium-speed diesel engine under three engine modes representing idle, about 50% power and full load conditions. Engine performance and emissions data obtained with the blends were compared to that of engine running with the #2 diesel. Results indicated that the 5% blends could maintain engine power and fuel economy. Frying oil based B5 provided more significant reductions on CO, THC and PM emissions and increments on NOx emissions as compared with that of the canola B5 fuel. The 20% blends reduce engine CO, PM and smoke emissions, but increase NOx emissions by up to approximately 8%. Engine cylinder pressure and injection pressure data was also collected to provide additional information for evaluation of fuel economy and emissions benefits of using the blends.

NOx Emission and Fuel Economy of the Honda CVCC Engine

1974 ◽  
Author(s):  
Shizuo Yagi ◽  
Tasuku Date ◽  
Kazuo Lnoue
Keyword(s):  
Fuel Economy ◽  
Nox Emission

scholarly journals Analyzing the Effect of Air Capacitor Turbocharging Single Cylinder Engines on Fuel Economy and Emissions Through Modeling and Experimentation

2018 ◽  
Author(s):  
Michael R. Buchman ◽  
W. Brett Johnson ◽  
Amos G. Winter
Keyword(s):  
Internal Combustion Engine ◽  
Fuel Economy ◽  
Combustion Engine ◽  
Effective Means ◽  
Cost Effective ◽  
Internal Combustion ◽  
Intake Manifold ◽  
Power Gain ◽  
Single Cylinder ◽  
Intake Stroke

Turbocharging can provide a cost effective means for increasing the power output and fuel economy of an internal combustion engine. A turbocharger added to an internal combustion engine consists of a coupled turbine and compressor. Currently, turbocharging is common in multi-cylinder engines, but it is not commonly used on single-cylinder engines due to the phase mismatch between the exhaust stroke (when the turbocharger is powered) and the intake stroke (when the engine intakes the compressed air). The proposed method adds an air capacitor, an additional volume in series with the intake manifold, between the turbocharger compressor and the engine intake, to buffer the output from the turbocharger compressor and deliver pressurized air during the intake stroke. This research builds on previous work where it was shown experimentally that a power gain of 29% was achievable and that analytically a power gain of 40–60% was possible using a turbocharger and air capacitor system. The goal of this study is to further analyze the commercial viability of this technology by analyzing the effect of air capacitor turbocharging on emissions, fuel economy, and power density. An experiment was built and conducted that looked at how air capacitor sizing affected emissions, fuel economy, and the equivalence ratio. The experimental data was then used to calibrate a computational model built in Ricardo Wave. Finally this model was used to evaluate strategies to further improve the performance of a single cylinder diesel turbocharged engine with an air capacitor.

The Effect of Misfire on the Emission and Engine Performance of a Single Cylinder Motorcycle Engine

2012 ◽  
Vol 516-517 ◽  
pp. 1655-1659
Author(s):  
Chang Tai Wu ◽  
Liang Chun Lu ◽  
Jau Huai Lu
Keyword(s):  
Engine Performance ◽  
Operating Conditions ◽  
Engine Exhaust ◽  
Engine Torque ◽  
Single Cylinder ◽  
Low Load ◽  
Unburned Hydrocarbons ◽  
Engine Emission ◽  
Motorcycle Engine ◽  
Dynamometer Test

A misfire controller developed by the authors was used in this paper to investigate the effect of misfire on the emission and engine performance of a single cylinder motorcycle engine. Three kinds of test were carried out, the idle test, the engine dynamometer tests, and the chassis test. It was found that in the engine dynamometer tests, the concentration of unburned hydrocarbons in the engine exhaust was raised and the engine torque declined as the misfire rate increased. The variations of the CO and CO2 are not the same in different operating conditions. At low load, CO concentration increased with the misfire rate while CO2 moved in an opposite direction. Contrary condition happened at high load. The CO2 concentration increased with the misfire rate while CO varied in the opposite way. Results of idle test showed that misfire would cause moderate deterioration of engine emission. However, chassis dynamometer test showed that even 1% of misfire would cause severe increase of emission.

Nissan NAPS-Z Engine Realizes Better Fuel Economy and Low NOx Emission

1981 ◽  
Author(s):  
Masanori Harada ◽  
Tadashi Kadota ◽  
Yoshitaka Sugiyama
Keyword(s):  
Fuel Economy ◽  
Nox Emission ◽  
Low Nox Emission
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