FACULTY OF ENGINEERING,

This study investigates the impact of Nigeria’s tropical environment on the performance of marine diesel engines, focusing on how climatic factors such as air temperature, humidity, atmospheric pressure, and seawater temperature influence engine efficiency Nigeria’s coastal regions are characterized by consistently high temperatures, intense humidity, and seasonal rainfall variations all of which can affect combustion efficiency, cooling capacity, and fuel consumption in marine engines.

The increasing need for effective and cheap surveillance solutions across various sectors in Nigeria, including security, agriculture, environmental protection, and disaster management and development of homemade drones. Although quite popular and ubiquitous in technologically advanced nations, drones are currently not being produced in Nigeria that can be used for both surveillance and monitoring. Modifications were done on a locally adapted drone assembled from parts sourced abroad. The
drone was enhanced with advanced technical capabilities optimizing it for smooth surveillance operations. Major modification upgrades include the integration of pivotal components including microchips ranging from Raspberry Pi 5, Arduino Atmel Amega 2560, STM32H7 controller, along with the Pixhawk 2.4.8 flight controller, a high-resolution Raspberry Pi Camera Rev 1.3, ultrasonic sensors, PWM to PPM converter, and GPS navigation system into the F450 drone frame. These enhancements allow for functionalities such as object tracking, obstacle avoidance, and an automatic return-home capability, enhancing the drone's adaptability for various surveillance applications

The project titled “Design and Fabrication of a Grain Crusher” was aimed at developing a small-scale, electrically powered machine for crushing and grinding grains such as maize, millet, and sorghum into finer particles for easy processing. The objectives were to design a hammer mill-type crusher suitable for local use, ensure ease of maintenance, minimize power consumption, from locally sourced materials. The methodology involved conceptual design, material selection, component fabrication, and
assembly of the crushing unit, hopper, frame, and power transmission system. Key design parameters such as shaft diameter, pulley ratio, hammer dimensions, and motor power were determined using standard mechanical design equations. erformance evaluation was conducted through test runs using maize to assess crushing efficiency and particle size distribution.

This study investigated the effect of ceramic waste powder (CWP) as a partial replacement of cement on the mechanical performance and durability of concrete, with the aim of promoting sustainable and environmentally friendly construction practices. The experimental work was carried out between August and September 2025 at the Civil Engineering Laboratory, University of Benin. Ceramic waste was crushed and ground to pass a 75 µm sieve, and concrete mixes with 0%, 5%, 10%, 15%, and 20% CWP were produced at a 1:2:4 mix ratio and a constant water–cement ratio of 0.55. Compressive strength was tested at 7, 14, and 28 days, while durability was assessed using water absorption and sorptivity.

The availability of water is important for all forms of life, serving as a fundamental need and
an indispensable element of biological processes. From consumption and hygiene to agriculture and recreation, water's applications are numerous. Its abundance in various forms - from the vast oceans to the human body itself - stresses its critical role in sustaining life. Just
as oxygen is essential for life, so too is water, making it an irreplaceable foundation of our
world.

The pressure exerted on a water distribution system due to population increase and aging of
the system yields to routine assessment of its functionality. EPANET 2.2 software was used
comparatively in evaluating/analyzing the serviceability of the water distribution system in
University of Benin, Ugbowo campus. A steady state analysis was also carried out to determine hydraulic parameters such as pressure, velocity, headloss and flow. The results from the design simulation shows that the pressure gotten at all nodes was suitable for the design and the pressure results indicated a high head within the system which resulted to (90%) of the nodes operating above the adopted system pressure of 10m while the remaining 10% of the pressure was operating below the pressure of 10m.

All over Nigeria as well as to the overseas the fuel oils as well as crude oils are transported through distribution pipes, tankers cargo ships. Although the processes are well laid out to avoid leakages of pipes, accidents of service tankers these events still happens on a regular bases especially in the niger delta region of the country where pipe vandalism due to oil bunkery is on the rise. All these processes leads to the leakages of fuel oils e.g kerosene which eventually settles on coastal waters. The leaked oil products would result in contaminating the water which are used in the concrete mortar and the sandcrete industry which are the cement dependent industry. In this study, the effect of water contaminated with kerosene on the compressive strength of conventional normal ordinary Portland cement has been evaluated in various exposure conditions

The unending evolution of technology has led to the innovations in everyday facilities, and restroom infrastructure isn’t left out. This project focuses on the DESIGN AND IMPLEMENTATION OF AN AUTOMATED TOILET for the Mechanical Engineering Department of the University of Benin. This automated toilet integrates automation, hygiene, and efficiency-enhancing features to improve user experience, environmental sustainability, and operational convenience. The system incorporates a limit switch which sends signal to the modified autoflush device whenever a user opens the door, contactless flushing, odor detection, water efficiency mechanisms, enhanced hygiene protocols and a automated lock which incorporates both biometrics and a card reader to enforce access control. The design process involved conceptualization, material selection, fabrication, and performance testing. All ensuring optimal functionality in the university environment. The Testing results indicated that the automated toilet performed efficiently, with responsive automation and reliable hygiene features being implemented to foster a contactless user experience. The implementation of this system demonstrates the potential of automated restroom solutions in the enhancement of sanitation, water wastage, while also providing a modern, user-friendly facility. Some future improvements could include ultrasonic sensors for higher precision, improved water conservation strategies, and also more compact design elements. This project highlights the role of automated technology and modification in modern sanitation and its potential for broader applications in both public and private facilities.

An automated lawn mower is a machine designed to cut grass without requiring human guidance or control. With the continuous advancements in technology, automation has become integral to nearly every aspect of modern life. From household appliances to industrial machinery, automation has transformed the way we interact with our environments, reducing manual labour and improving overall efficiency. The emergence of automated lawn mowers follows this trend, replacing the conventional lawn mowing technology that demands significant human effort. This work aims to develop an improved automated lawn mower that
is both economically accessible and user-friendly, designed with locally sourced materials to minimize production costs. Unlike the existing robotic lawn mowers technologies, our model emphasizes a simple design making it easy to maintain and repair without specialized tools or skills. It is equipped with advanced sensor technology like the HC-SR04 ultrasonic and infrared sensors for obstacle detection and avoidance within the ranges of 10 to 50cm. When operating at a distance beyond 50cm, the mower consistently moved forward indicating an environment with no obstacles. Within a range of 30 to 50cm, the system effectively slowed the mower, achieving a 150millisecond response time and 98% accuracy. At closer proximities of 10 to 30cm, the mower reversed and turned with a slightly reduced accuracy of 95% and a 180millisecond response time, while obstacles detected at less than 10cm prompted at immediate stop within 120milliseconds at a 97% accuracy rate. It also integrates a 5kHz electromagnetic perimeter wire for systematic navigation and is powered by an 18V DC rechargeable battery, making it both sustainable and eco-friendly.