Internal Combustion Engine Power Research Articles

Analysis of different dimensions of a virtual wind tunnel and different wall conditions

Growing interest in improving the performance of vehicles is a subject that allows for continuous research. One such branch of these researchers is energy and consumption performance. These performances describe, on a global level, the need for lower fuel consumption but also a higher energy and power performance. Therefore, to create this balance, direct control of polluting emissions, especially C02 emissions, is necessary. Creating the best mix between low fuel consumption, maximum power of internal combustion engine and low pollutant emissions is influenced by many factors. One such factor, of prime importance, is represented by the aerodynamics of vehicle, in particular the aerodynamic performance, which needs to be tested to be confirmed, so numerical values are needed. Therefore, different ways of testing in the physical or virtual environment are necessary. To facilitate the optimization of a vehicle from an aerodynamic point of view, the most practical way is the virtual wind tunnel, given the possibility to test, at the same time, more configurations. But the CFD (Computational Fluid Dynamics) simulations, sometimes, have the disadvantage of very long compilation times. So, in the presented paper the construction of an optimal virtual wind tunnel for trucks will be presented, focusing on the test area (chamber) and several configurations will be presented such as: different proximity of the tunnel walls to the tested object so a different geometry of the test chamber and condition for the type of floor with different roughness than base case to simulate a more realistic road surface. Following the CFD simulations, it was observed the influence that increasing the dimensions of the test chamber has on the results obtained, so that moving the walls away from the test model generates much more realistic results. In addition, another thing that has an impact is the roughness of the floor, which, in this particular case, generate a 10% difference between the values obtained. Therefore, it will be possible to optimize the tunnel as best as possible to have results as close as possible to reality and in a reduced time.

Energy, economic and environmental benefits of Demand Response for improving building energy flexibility

The increasing penetration of intermittent renewable sources in power generation at local and building-level poses growing issues in balancing generation and demand. To avoid imbalances, it is therefore necessary to ensure adequate levels of flexibility in the building energy system. This can be done both on the generation side, through the coupling of different energy carriers (cogeneration, power-to-heat solutions) and/or the integration of storage systems, and on the demand side, through smart “demand response” programs. This paper considers a tourist facility located in central Germany as a case study to evaluate the energy, economic and environmental benefits that can be obtained from the application of appropriate demand response strategies. The electrical demand data of the facility are monitored at both aggregate and individual load levels and made available by means of a cloud platform. The facility includes two stationary combined heat and power internal combustion engines powered by natural gas and a photovoltaic system. The results show how, thanks to appropriate load management, it is possible, on the one hand, to increase the self-consumption of PV-generated energy and, on the other hand, to keep more constant the load of the engines, which can therefore operate with better efficiencies. This results in both a reduction in energy expenses and a decrease in carbon dioxide emissions attributable to the building.

Analysis of the Current Status of UAV Power Sources

UAVs have been applied in various industries and fields, and have an indispensable role. UAV power system is the key to the normal work of the UAV, this paper focuses on the summary introduction of lithium-ion battery, internal combustion engine, solar energy, fuel cell and hybrid power of the working principle, domestic and international research status, key technologies, advantages and disadvantages, part of the classification and application of the power system, and UAV power of the future development and outlook and so on.

Experimental Study on the Flow Characteristics of Two-Stage Variable Turbines in a Twin-VGT System

The twin variable geometry turbocharger (VGT) System, through efficient use of exhaust energy, maximizes internal combustion engine (ICE) power, reduces exhaust emissions and improves reliability. However, the internal flow characteristics of the twin-VGT system are greatly affected by the environment. To ensure that the two-stage adjustable supercharged internal combustion engine is efficient in all geographical environments and under all operating conditions, it is necessary to conduct in-depth research on the internal flow characteristics of high- and low-pressure turbines. In this paper, an experimental system of the flow characteristics of a double variable-geometry turbocharging (twin-VGT) system is designed and developed. A two-stage variable turbine flow characteristic test was carried out, focusing on the relationship between the initial rotational velocity of high variable-geometry turbocharging (HVGT) and blade opening in low variable-geometry turbocharging (LVGT). The effects of high- and low-pressure variable-geometry turbocharger (VGT) blade opening on available exhaust energy, expansion ratio distribution, blade velocity ratio, compressor power consumption and isentropic efficiency were studied. The results show that when the available energy of exhaust gas is constant, with the increase in HVGT turbine speed, when the LVGT blade opening decreases by 10%, the low-pressure turbine expansion ratio increases by about 0.23.

Quantumness in Diagnostics of Marine Internal Combustion Engines and Other Ship Power Plant Machines

Abstract The article provides proof that the diagnostics of marine internal combustion engines and other ship power plant machines should take into account the randomness and unpredictability of certain events, such as wear, damage, the variations of mechanical and thermal loads, etc., which take place during machine operation. In the article, the energy E, like the other forms (methods) that it can be converted into (heat and work), is considered the random variable Et; at time t, this variable has the mean value E ¯ t {\bar E_t} , which is the observed value of the statistic E ¯ s t {\bar E_{st}} with an asymptotically normal distribution N ( E ( E t ) , σ t n ) N\left( {E\left( {{E_t}} \right),{{{\sigma _t}} \over {\sqrt n }}} \right) , irrespective of the functional form of the random variable Et. A proof is given that shows that the expected value estimated in the above way, considering the time t of the performance of task Z by a marine internal combustion engine or other ship power plant machine, can be used to determine the machine’s possible action (DM). When compared to the required action (DW) needed for task Z to be performed, this possible action makes it possible to formulate an operating diagnosis concerning whether the engine or machine of concern is able to perform task Z. It is assumed that an energy device of this type is able to perform a given task when the inequality DM≥DW holds. Otherwise, when DM < DW, the device cannot perform the task for which it was adopted in the design and manufacturing phase, which means that it is in the incapability state, although it still can be started and convert energy into the form of heat or work..

The results of the influence of prepared diesel on the fuel and economic indicators of internal combustion engines

The article analyzes the existing methods and devices for reducing the fuel consumption of the internal combustion engine. The design of an additional device installed in the standard internal combustion engine power system, the cavitation principle of operation, is proposed. Comparative results of experimental tests of this device on a bench installation with a diesel internal combustion engine for fuel-economic and environmental properties of the internal combustion engine, as well as changes in the physicochemical properties of diesel fuel of various brands after its treatment by the device are presented. The most effective parameters of the cavitation device for processing diesel fuel and its place of installation in the standard internal combustion engine power system are determined. Keywords: fuel preparation device, cavitation device, reduction of fuel consumption, ways to reduce fuel consumption, fueleconomic properties of internal combustion engines, environmental properties of diesel internal combustion engines, properties of diesel fuel,

Research on thermal-structural coupling and structural optimization of switching valve in booster system

Turbocharging technology is the second milestone in the development of internal combustion engine, which has become an inseparable part of engine technology and has a significant impact on the power and economy of internal combustion engine. The switching valve is a key component in the sequential turbocharging system, which plays a key role in realizing the energy distribution of the parallel turbocharger, the pressure ratio with different engine conditions, the flow regulation and the matching of the full working conditions. In order to explore the influence of different driving torque, gas pressure and temperature on the switching valve of the pressurization system, the steady-state statics and thermal-structural coupling simulation of the switching valve at room temperature were carried out by ANSYS Workbench software. Based on the central composite design method and Kriging method, the size combination and multi-objective response surface optimization model of 15 groups of switching valve design variables are obtained. Under the same conditions, the multi-objective genetic algorithm is used for simulation calculation. The results show that the deformation of the switching valve mainly occurs on the valve plate and the valve shaft under different driving torque and temperature, and it is symmetrically distributed. The distribution of deformation, stress, contact pressure and friction stress of the switching valve under different driving torques are the same. With the increase of driving torque and temperature, the deformation, stress, contact pressure and friction stress of the switching valve increase gradually, and the temperature effect is the most obvious. Compared with the original design size, the optimized structure size can effectively reduce the contact pressure of the switching valve and significantly improve the service life of the switching valve.

Summary of Turbocharging as a Waste Heat Recovery System for a Variable Altitude Internal Combustion Engine.

The increase in altitude causes the decrease in internal combustion engine power and the increase in pollutant emission. Converting waste heat into more useful forms of energy through the recovery of waste heat from internal combustion engines is the most promising mechanism for improving both of these goals. This paper comprehensively reviews the development and research of waste heat recovery technology of an internal combustion engine in a variable altitude environment. It is found that exhaust gas turbocharging is the most promising waste heat recovery technology to restore high-altitude internal combustion engine power. Turbochargers are affected by low temperature and low pressure at high altitudes, resulting in poor environmental adaptability, inadequate supercharging ratios, and decreased supercharging efficiency. Therefore, it is very important to select the high pressurization system facing the plateau area and its reasonable matching characteristics. The quality of exhaust energy determines how much waste heat a turbine can recover, and only the exergy part of exhaust energy can realize heat/work conversion. The main disadvantage of turbocharging technology applied in the plateau area is that the speed ratio deviates from the design value, leading to the increase of flow loss inside the supercharger. Therefore, optimizing the internal flow field of a high-altitude supercharger is a key problem to improve the efficiency of energy recovery. The conclusion drawn from this Review is that a two-stage turbocharging system will be a key technology to improve the thermal efficiency and reduce the fuel consumption of high-altitude internal combustion engines in the coming decades. In addition, the efficient utilization of the exhaust energy of the two-stage turbine and the influence of the variable compression process of the two-stage compressor on the working medium in the cylinder will be the focus of future research.

Online Big-Data Monitoring and Assessment Framework for Internal Combustion Engine with Various Biofuels

Article Online Big-Data Monitoring and Assessment Framework for Internal Combustion Engine with Various Biofuels Ming Zhang 1,*, Vikas Sharma 2, Zezhong Wang 1, Yu Jia 1, Abul Kalam Hossain 1, and Yuchun Xu 1 1 College of Engineering and Physical Sciences, Aston University, Birmingham B4 7ET, UK 2 School of Architecture, Technology and Engineering, University of Brighton, Brighton BN2 4GJ, UK * Correspondence: m.zhang21@aston.ac.uk Received: 14 December 2022 Accepted: 26 April 2023 Published: 30 May 2023 Abstract: As the primary power source for automobiles, the internal combustion (IC) engines have been widely used and served millions of people worldwide. With increasingly stringent environmental regulations, biofuels have been obtained more attentions and are being used as alternative fuel to power IC engines. However, there are currently no standard solutions or well-established monitoring and assessment methods that can effectively evaluate the IC engine’s performance with biofuels. The expectation for biofuels is to keep the engine’s lifetime as long as the conventional fuels, or even longer. Otherwise, their usage would be unnecessary because they would reduce the lifecycle of the engine and also cause more waste and pollution. To address this challenge, we initially designed two biofuels: waste cooking oil biofuel (WCOB) and lamb fat biofuel (LFB). Then we proposed an online big-data monitoring and assessment framework for IC engines operating with various types of fuel. We conducted comprehensive experiments and comparisons based on the proposed framework. The results indicate that LFB performs best under all the performance indicators.

Waste-to-energy technologies as the future of internal combustion engines

Syngas has a promising future as alternative to petroleum products and as a fuel for combustion engines. This study provides an overview on the feasibility of using syngas to power internal combustion engines. It presents technological process solutions for producing syngas toward minimizing the formation of tars as the most undesirable component for engine applications.. The combustion process characteristic of syngas composition has been tackled including critical criteria such as the flammability limit, ignition delay, laminar velocity, turbulent velocity, and the subsequent challenges in determining a numerical methods that best matches the exprimental datas. The syngas usage as alternative resource, while tackling the uncertainty issue of its composition, for Compression Ignition (CI) and Spark Ignition (SI) with the emission and performance effectiveness has been studied as well. The results of the review showed that syngas can be a viable alternative for some stationary applications, such as advanced integrated systems (ICCG), but its application is, however, relatively limited, for example as a secondary fuel in engines (CI) for automotive applications. However, significant discrepancies between numerical (simulation) and experimental results have been noted. This suggests that there are many scientific and experimental challenges in the area of syngas combustion processes in internal combustion engines. However, given the potential of this group of fuels, especially in the face of the energy crisis, this research is highly desirable and has a significant application perspective.

Operational Issues of Using Replacement Fuels to Power Internal Combustion Engines

The classification of engine fuels was systematised in the present study. The basic evaluation criterion included the type of raw material used for the production of motor fuel and the prevalence of its usage. There was a reason for the purposefulness of searching for new kinds of engine fuels not only for the sake of environmental protection but also for the rational use of natural resources. The concept of substitute fuels was methodically presented. The criteria for the qualification of substitute fuels for internal combustion engines were systematised. Using the example of fuels produced from bio-oils, tests were carried out to assess the prospects of considering bio-oil fuels as substitute ones for self-ignition engines. Accordingly, an analysis was, inter alia, conducted on the fuel combustion process in the cylinder of a test self-ignition engine. Based on the results obtained, the thesis was formulated that rapeseed methyl ester (RME) fuel can be considered a substitute fuel for modern self-ignition engines. There are no significant differences between the physicochemical properties between DF diesel fuel and B100 fuel apart from a significantly higher oxygen mass content in B100. The torque of an internal combustion engine is regularly higher for diesel fuel. The use of B100 fuel enables a measurable reduction in pollutant emissions. The working factor pressure in the cylinder is slightly lower when the engine is powered by B100. The relative heat release rate for B100 is slightly lower compared to DF diesel.

The effect of different charging concepts on hydrogen fuelled internal combustion engines

Hydrogen has been widely acknowledged as a potential fuel for internal combustion engines, owing to its unique chemical properties, environmental friendliness, and the ability to be produced from a variety of sources. The carbon-free nature of hydrogen is of particular significance as it is considered to be a key contributor to achieving stringent emissions regulations. However, one of the challenges associated with hydrogen as a fuel is the requirement for high air flow during combustion, which is necessary to meet the stoichiometry of the combustion process. The failure to achieve this high air flow can result in elevated emissions of Nitrogen Oxides (NOx), a phenomenon that is of concern for engine manufacturers.Turbocharging increases the power and efficiency of internal combustion engines by forcing more air into the combustion chamber. This can be particularly beneficial for hydrogen-fuelled engines as hydrogen has a lower energy density compared to traditional fossil fuels. This study aims to establish the most efficient boosting strategy for hydrogen-fuelled internal combustion engines with the goal of achieving a combination of fuel economy, high power density, and low emissions of NOx. To achieve this objective, a model of a hydrogen-fuelled internal combustion engine, specifically tailored for heavy-duty vehicle applications and featuring a direct injection system, has been developed. The validity of the model has been evaluated through a comparison of the results obtained from the model with those obtained from dynamometer testing. The study employs a model-based approach to examine a variety of charging concepts.

Assessment of the application of oxygen enrichment in the hydrogen-fueled Wankel rotary engine

Hydrogen-fueled Wankel rotary engines (WREs) with excellent dynamic and emission characteristics have the potential to become a substitute for current fossil-fueled reciprocating piston engines. Oxygen enrichment can be employed to solve the lower power of hydrogen-fueled internal combustion engines, however, it has not been applied in hydrogen-fueled WRE at present. Hence, the goal of this work is to experimentally assess the application of oxygen enrichment in the hydrogen-fueled WRE. This work is conducted at 1500 r/min, wide-open throttle and 2.0 excess air ratio. The work found that within the test range, oxygen enrichment can effectively improve the brake torque of hydrogen-fueled WRE, however, penalize the brake thermal efficiency and NO emission. When the oxygen fraction in air increases from 21% to 29.1%, the brake torque is increased by about 45% while the brake thermal efficiency is lowered by about 8.5% and NO emission deteriorates by three orders of magnitude. Oxygen enrichment can accelerate flame development and propagation process. Besides, as the oxygen-enriched level is increased, abnormal combustion, including knock, backfire and pre-ignition, began to occur and affected the normal operation of hydrogen-fueled WRE. In general, compared with the high oxygen-enriched level, which has severe penalties on performance except for power output, low oxygen-enriched level has higher application potential.

Search for reserves to improve the efficiency of forest soil preparation technology and land clearing during reforestation by reducing the energy intensity of the process

The intensive development of forest areas in the Russian Federation leads to the need for a significant amount of work related to reforestation. High-quality soil preparation is the key to successful survival of forest planting material of economically valuable species. Traditional technologies of forest soil preparation by dump plowing are outdated today and do not allow to radically increase the level of labor productivity. In the work, calculations were made of the power costs required for soil preparation in the process of mineralization by a forest plow of the PLP-70 type. It has been established that a standard tractor of the Onezhets-300 series, when moving with a plow in a cutting area with simultaneous cutting of shrubs and small forests, allows for confident processing at a speed of no more than 0.3 m/s. This ensures productivity up to 1.5 hectares per shift. To ensure the growth of shift output up to 3.5...4 ha per shift, the required tractor power is at least 250 kW. Domestic serial forestry tractors cannot provide productivity growth, since they have an internal combustion engine power less than required.

Study of the parameters for a parallel hybrid electric vehicle

At present, the expansion in vehicle population has contributed to the increase in carbon emissions and has led to an even greater increase in the need for fuel. In this way, the hybrid vehicle (HEV) and the electric vehicle (EV) are being introduced to reduce fuel consumption and exhaust gas emission instead of conventional vehicles. The study of parameters for the hybrid electric vehicle is important to design the powertrain of the vehicle. The parameters of hybrid vehicles consist of the rate of internal combustion engine (ICE) power, transmission gear ratios, motor maximum torque and power, capacity and power of battery. The vehicle model with the regenerative model is built to calculate the regenerative energy for driving on a road condition. The design purposes to match the vehicle with the specified performances, like as speed and acceleration. Many parameters are chosen from analysis of this results. And then, as a result, fuel consumption of test vehicle model reduces 15% than the conventional vehicle in this study.

Estimation of Energy Management Strategy Using Neural-Network-Based Surrogate Model for Range Extended Vehicle

In this paper, an energy-management strategy based on fuel economy is presented to achieve a further range increase for range-extended light commercial vehicles. Estimation of the energy-management strategy was carried out using a neural-network-based surrogate model for an range-extended vehicle. Surrogate-based optimization plays an important role in optimization problems, which are based on complex structures with uncertainties in data sets due to various conditions. Neural networks have advantages in creating surrogate-based models in cases of complex problems with uncertainties in data sets to evaluate the process and estimate the outputs. This study discusses additional power-unit applications and vehicle integration for a light commercial electric vehicle. It provides preliminary design work and techniques for identifying NVH problems in particular. SIMULINK and neural-network-based surrogate models are established, and the changeable parameters of the vehicle, such as mass, battery/fuel-tank capacity, internal combustion engine power and electric motor power units are simulated in different dynamic and static conditions to determine an energy-management strategy for a range-extended vehicle based on fuel economy under various conditions. It was seen that APU parameters and an energy-management strategy significantly affected the fuel consumption of REX. A neural-network-based surrogate-model approach gave high-precision results in predicting the operating strategy according to different loading conditions to reduce fuel consumption. In some cases, it can be required to determine the fuel consumption results in various conditions with the variables, which may be out-of-boundary conditions. It was seen that the proposed neural-network-model also offers higher prediction ability in cases of unexpected results in data sets of various conditions compared to regression analysis. The results show that estimation and optimization of energy management using a neural-network-based surrogate model can be achieved by adapting the operating strategy according to different loading conditions to reduce fuel consumption. This study presents an approach for future new vehicle projects by transforming a prototype light commercial electric vehicle to REX. The proposed approach was developed to design the most efficient range-extended vehicle by changing all variables without costly computations and time-consuming analysis. It is possible to generate variable data sets and to have reference knowledge for future vehicle projects.

Comparative Analysis and Performance Characteristics of Bio-Additives Induced Fuel Blend

Global demand for efficient transportation and energy dissipation in industries that use engine-powered equipment is enormous and largely supplied by liquid fuels derived from petroleum that power internal combustion engines (ICEs). Since the demand for jet fuel and diesel is anticipated to surpass gasoline consumption in the near future, low-octane gasoline components will become more widely available. As a result, low-octane gasoline components are expected to become more readily available, as demand for jet fuel and diesel is expected to outpace gasoline consumption in the near future. Experimentally, the effects of organic fuel additives (OFAs) on the performance of internal combustion engines were investigated. The findings compare plain, commercially available, neat gasoline samples to pure ethanol and fuel samples injected with OFAs. The development of various fuel blends; the analysis and characterization of fuel samples, including blended fuel samples; and the experimental investigation and comparative analysis of the engine performance powered by the various samples and blends of gasoline on the TQ TD115 MK11 testbed for single-cylinder engines were carried out in the study. The study demonstrated that the nanoadditions were superior to pure ethanol and undiluted gasoline in terms of performance. and showed that pure ethanol has a high torque value at lower speeds, but at speeds greater than 3000 rpm, D-NA outperformed ethanol additives and neat gasoline in terms of torque. At lower speeds, pure ethanol also had a high brake power value, but as speeds increased, samples containing D-NA outperformed ethanol additive and neat gasoline in brake power. Pure ethanol in a concentration of more than 3 has a high brake thermal efficiency value at lower speeds, but as speeds increased, samples containing D-NA outperformed ethanol additive and neat gasoline in terms of brake thermal efficiency. Keywords: Fuel additives; ethanol; brake power; Internal combustion engine; fuel

Performance analysis of a bio-diesel fired engine bottoming with micro-ORC

The purpose of this work is to investigate the performance in terms of electric power and electric efficiency of a 11kW bio-diesel internal combustion engine (ICE) coupled with a micro Organic Rankine Cycle (ORC) both in design and off-design conditions. A zero dimensional (0D) thermodynamical engine model has been developed to predict the electric and thermal power with 100% biodiesel fuel (B100). B100 has been selected for the performance analysis of the integrated system due its lower environmental impact. For the ORC system, a subcritical thermodynamic model has been used with various working fluid (R245fa, R1233zd(E), R134a, R1234ze(E) and R1234ze(Z)). A plate heat exchanger (PHEX) has been adopted as evaporator of the organic cycle to directly recover the thermal power of the exhaust gas. Both models have been validated using experimental data from literature. Two different expander configurations, dynamic and volumetric, has been investigated. Model validations show good agreement with the experimental and literature data, respectively. Moreover, the results highlight that the micro-ORC could achieve a maximum electric efficiency of about 7% at full load with R1234ze(Z). Although at part load the dynamic expander show better performance, the volumetric expander has been selected for the system analysis due to its real suitability for small and micro scale ORC. Combined system results show a maximum enhancement of engine efficiency of about 5%, and better results, in terms of good compromise between electric efficiency and operating range width, has been shown for R1233zd(E). Furthermore, the direct coupling of the PHEX with the exhaust gases allows to have heat exchange evaporator areas below 2 m2 for all analysed fluids.

THEORETICAL SUBSTANTIATION OF THE EFFICIENCY OF MACHINES FOR EARTH WORKS BASED ON THEIR TECHNICAL PARAMETERS

The characteristic features of modern MZRs are that they are divided into cyclic and continuous machines, which depends on their productivity and power of internal combustion engines, and the design of their working equipment affects the process of specific application of MZRs for the construction of appropriate earthworks with different labor intensity. When using MZR, the main question arises about the effectiveness of their functioning from the point of view of knowing the actual state, the amount of fuel consumption required to perform a given volume of work and inefficient fuel losses. The purpose of the article is to determine the real state for known MZR based on the use of reference parameters and to ensure the given state at the design stage of such machines based on the application of system analysis with the establishment of numerical indicators that are characterized by objectivity, ambiguity and accuracy of their determination. The conducted studies are based on the application of system analysis when considering MZR using their reference technical and economic parameters, as a complex system with structural elements functionally interconnected and capable of transmitting hydraulic and mechanical energy. Moreover, MZR is studied as a system that is suitable for converting input power into useful work at the output and, on this basis, is able to determine its internal state due to the overall efficiency and the amount of specific fuel consumption. Based on the results of the research, it was found that the most effective MZR are machines with a continuous working process and they are characterized by high values of the total efficiency of the machine at the level of (8 to 14)%, and gradually the total efficiency decreases to several tenths of a percent for machines of cyclic action. Research has established that in each of the ten MZR groups there is a machine that has the highest total efficiency, and the value of specific fuel consumption per unit of productivity for it is the smallest, and such a machine is classified as exemplary. Other MZR from this group with a low value of total efficiency and higher specific fuel consumption are classified as ordinary cars. According to the conducted studies, it is possible to ensure the selection of the best MZR to create a squad of machines from them, directed to perform a specific volume of work with minimal fuel loss. The internal state of MZR by the value of the total efficiency can be diagnosed at the stage of completion of production, as well as during operation due to the measurement of input and output parameters based on the use of modern means for recording these parameters. Keywords: earthmoving machines, power, fuel, efficiency.

Engine Performance and Exhaust Emissions from Sandbox (Hura crepitans) Seed Methyl Ester

The finitude and environmental impact of petroleum fuels have led to the search of alternative fuels and biodiesel has proven to be an alternative fuel to petro-diesel with less environmental impact. Engine performance and exhaust emissions of Sandbox Methyl Ester (SBME) fuel were evaluated. Pure SBME (B100) was blended with diesel at 5, 10, 15, 20, 25 and 50% volume designated B5, B10, B15, B20, B25 and B50 respectively. The diesel was used as a reference fuel. The fuel blends (B100-B5) and diesel was used to power a 4-stroke-single-cylinder diesel engine coupled to a dynamometer and a 7.5 kW alternator with varying loads. The brake specific fuel consumption (bsfc), brake power, thermal efficiency, carbon monoxide (CO), oxides of nitrogen (NOx) and hydrocarbon emissions were evaluated. The results of no-load to full-load indicated that diesel utilized the lowest bsfc of 0.14-0.62 kg/kW.h to produce the highest brake power of 5.6-3.7 kW. Similarly, the range of B5-B25 utilized bsfc of 0.16-0.86 kg/kW.h to produce the brake power of 5.1-2.9 kW. The brake thermal efficiency was 58-14% for diesel, and 52-10% for B5-B25. CO emission was reduced to 38.24-11.11% for B5 and 64.71-55.56% for B100. HC emission was reduced to 9.09-5.56% for B5 and 45.45-30.56% for B100. NOx emission increased with SBME concentration. The results obtained for the SBME engine performance and exhaust emissions established it as a potential fuel to power internal combustion engines.