Single-Cylinder Proco Engine Studies - Fuel and Engine Calibration Effects on Emissions, Fuel Economy and Octane Number Requirements

1978 ◽  
Author(s):  
B. J. Hillyer ◽  
W. R. Wade
Keyword(s):  
Fuel Economy ◽  
Octane Number ◽  
Single Cylinder ◽  
Engine Calibration

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.

Application of nano-additive to gasoline to increase environmental safety and fuel economy of cars

2020 ◽  
pp. 51-56
Author(s):  
Elena Romenovna Magaril ◽  
◽  
Romen Zelikovich Magaril ◽  
Elena Nikolaevna Skvortsova ◽  
Ilya Alexandrovich Anisimov ◽  
...  
Keyword(s):  
Surface Tension ◽  
Air Pollution ◽  
Fuel Economy ◽  
Octane Number ◽  
Environmental Safety ◽  
Individual Characteristics ◽  
Light Hydrocarbons ◽  
Mixture Formation ◽  
Evaporation Losses ◽  
The Individual

The aim of the work is to study the possibilities of improving the environmental safety and fuel economy of cars using the developed nano-additive. The results of the influence of the additive application on the individual characteristics of gasoline and engines confirm an effective decrease in the surface tension of gasoline at the interface with air and in the pressure of saturated vapors. As a result, mixture formation in the engine is improved and evaporation losses, and hence air pollution by light hydrocarbons, are reduced. The use of gasoline with the nano-additive significantly reduces fuel consumption and requirements for the octane number, the noise level during the operation of cars and increases the environmental safety of the operation of vehicles.

scholarly journals Investigation of Biofuels from Microorganism Metabolism for Use as Anti-Knock Additives

2017 ◽  
Author(s):  
John Hunter Mack ◽  
Vi H. Rapp ◽  
Malte Broeckelmann ◽  
Taek Soon Lee ◽  
Robert W. Dibble
Keyword(s):  
Octane Number ◽  
Spark Ignition ◽  
Metabolic Processes ◽  
Research Octane Number ◽  
Single Cylinder ◽  
Primary Reference ◽  
Si Engines ◽  
And Performance ◽  
Primary Reference Fuels

This paper investigates the anti-knock properties of biofuels that can be produced from microorganism metabolic processes. The biofuels are rated using Research Octane Number (RON) and Blending Research Octane Number (BRON), which determine their potential as additives for fuel in spark ignition (SI) engines. Tests were conducted using a single-cylinder Cooperative Fuel Research (CFR) engine and performance of the biofuels was compared to primary reference fuels (PRFs). The investigated fuels include 3-methyl-2-buten-1-ol, 3-methyl-3-buten-1-ol, 2-methylpropan-1-ol (isobutanol), and limonene. Results show that 3-methyl-2-buten-1-ol, 3-methyl-3-buten-1-ol, and 2-methylpropan-1-ol (isobutanol) sufficiently improve the anti-knock properties of gasoline.

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.

A Learning Algorithm for Optimal Internal Combustion Engine Calibration in Real Time

2007 ◽  
Author(s):  
Andreas A. Malikopoulos ◽  
Panos Y. Papalambros ◽  
Dennis N. Assanis
Keyword(s):  
Internal Combustion Engine ◽  
Real Time ◽  
Fuel Economy ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Pollutant Emissions ◽  
Engine Operation ◽  
Engine Calibration

Advanced internal combustion engine technologies have increased the number of accessible variables of an engine and our ability to control them. The optimal values of these variables are designated during engine calibration by means of a static correlation between the controllable variables and the corresponding steady-state engine operating points. While the engine is running, these correlations are being interpolated to provide values of the controllable variables for each operating point. These values are controlled by the electronic control unit to achieve desirable engine performance, for example in fuel economy, pollutant emissions, and engine acceleration. The state-of-the-art engine calibration cannot guarantee continuously optimal engine operation for the entire operating domain, especially in transient cases encountered in driving styles of different drivers. This paper presents the theoretical basis and algorithmic implementation for allowing the engine to learn the optimal set values of accessible variables in real time while running a vehicle. Through this new approach, the engine progressively perceives the driver’s driving style and eventually learns to operate in a manner that optimizes specified performance indices. The effectiveness of the approach is demonstrated through simulation of a spark ignition engine, which learns to optimize fuel economy with respect to spark ignition timing, while it is running a vehicle.

Engine Calibration Using “Eigenvariables”

2017 ◽  
Author(s):  
Yiran Hu ◽  
Ibrahim Haskara ◽  
Chen-Fang Chang ◽  
Kaveh Khodadadi Sadabadi ◽  
Ayyoub Rezaeian ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Development Process ◽  
Operating Conditions ◽  
Vehicle Design ◽  
Combustion System ◽  
Design Constraints ◽  
Engine Calibration ◽  
Engine Control System ◽  
Engine Combustion ◽  
Vehicle Development Process

To meet the more stringent emissions and fuel economy regulations, engine control system has become significantly more complex than before. As a result of this, engine calibration on the dynamometer now occupies one of the longest time sections in the vehicle development process. One strategy automakers have adopted is to use the same engine in multiple applications to reduce the calibration effort. Even then, vehicle design constraints often require changes to be made to the engine’s external components such as the intake and exhaust manifolds. These changes can create variations in the engine combustion behavior so that the engine must be recalibrated on the dyno, resulting in additional cost and effort. This paper explores the potential of reusing existing engine dyno data for a modified engine in these scenarios through the use of the so-called eigenvariable to describe engine operating conditions. Traditionally, engine dyno data is referenced by engine load and speed along with actuator positions (such as camphaser positions). The proposed approach describes dyno data using eigenvariables or variables that describe the engine in-cylinder condition prior to combustion. Eigenvariables are invariant with respect to external engine hardware. This invariance enables the same dyno data to be applied to a modified engine with the same combustion system design.

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