Advanced propulsion system for hybrid vehicles

A number of hybrid propulsion systems were evaluated for application in several different vehicle sizes. A conceptual design was prepared for the most promising configuration. Various system configurations were parametrically evaluated and compared, design tradeoffs performed, and a conceptual design produced. Fifteen vehicle/propulsion systems concepts were parametrically evaluated to select two systems and one vehicle for detailed design tradeoff studies. A single hybrid propulsion system concept and vehicle (five passenger family sedan)were selected for optimization based on the results of the tradeoff studies. The final propulsion system consists of a 65 kW spark-ignition heat engine, a mechanical continuously variable traction transmission, a 20 kW permanent magnet axial-gap traction motor, a variable frequency inverter, a 386 kg lead-acid improved state-of-the-art battery, and a transaxle. The system was configured with a parallel power path between the heat engine and battery. It has two automatic operational modes: electric mode and heat engine mode. Power is always shared between the heat engine and battery during acceleration periods. In both modes, regenerative braking energy is absorbed by the battery

Subscale Mars Colonization Mission

The team will compete in the SAE (Society of Automotive Engineers) Aero Design West Advanced Class competition, held 5-7th April 2019 in Van Nuys, California. The team will work to develop, through research, design, optimizational trade studies, and manufacturing, a system for the deployment of parasitic aircraft, as well as payload. The system will consist of a primary fixed-wing aircraft, parasitic autonomous gliders, a real-time altitude data acquisition system, as well as both static and releasable payload. The deployable gliders must navigate autonomously to a targeting area on the ground without any on-board propulsion. The releasable payload, which will consist of habitat modules and water bottles, must also be dropped in such a manner that they land within the same targeting area. The primary aircraft must be powered through only electric power, with an installed power limiter of 750 watts. In general, the wing and powertrain must be optimized to provide sufficient lift given a limit on available power. The project will require robust systems-level engineering as well as rigorous research, design, testing, and iteration

Emergency Water Station 3.0 Final Project Report

The South Texas Human Rights Center (STHRC) tasked our team, The Emergency Water Station 3.0 (3WS), with designing and implementing an emergency water station for migrants and refugees crossing the border between Mexico and Texas. The objectives of this project are to design, build, and test a prototype that can safely provide water to these migrants and refugees while communicating the water amount within the station back to the STHRC without hindrance due to weather or remote location. The following report outlines the features of our complete design, and details the primary functions of the main three subsystems that comprise the design. These subsystems include: the base structure, which holds the water and electronics/communication equipment, the electronics/communication system, which tallies and transmits water jug data to the STHRC, and the power system, which charges the station batteries and powers the electronic components. The final design is evaluated against the project constraints and requirements via subsystem and complete prototype testing. The design constraints of our project include the allotted time, two full semesters, and a budget of $1200, given to us by the Trinity University Engineering Science department. The fully constructed design must also fit within a standard truck bed (78” x 64”) for easy transportation. This constraint was satisfied with the dimensions included in Table 3.1.A of this report. The budget remains under$1200, our team spent exactly $1044.33 this semester on the station design. This project is also completed within the time allotment of two semesters, therefore satisfying all project constraints. The project requirements for our final design are outlined in Section 3. There are a total of eight requirements that need to be met, including the components that the water station is capable of housing. These components being 18 water gallon jugs, as flagpole, electronics system, as well as half the weight of the average adult human male. (Approx. 300 lbs. total). Our final prototype satisfied each part of this requirement, and had no deformation due to weight. Our design also satisfied the requirement of the operational cost for the communication system, which is$5 per month. Furthermore, we required that the primary components of the electronics/communications subsystem be at least IP55 compliant, as outlined by IEC Code 60529, which contributes to the weather resistance of our design. Each of these components is at least IP55 rated, some being up to IP68 compliant, which adds additional durability to adverse weather which is another requirement. The station must withstand an operational temperature of 20°F - 140°F, and a maximum wind speed of up to 40mph. Based on FEA simulations (seen in Section 3.8) and field tests, the wind speed requirement is satisfied. Although the components that make up our design are all capable of operating within the temperature range, our team was unable to directly test and prove this, as renting time in a 30’ tall thermal testing chamber is infeasible. The station also satisfies the requirement to report the total number of one gallon water jugs stored within the device at least once per day, to an accuracy of ±1 gallon jug. Furthermore, the station is required to be visible at night from at least one mile away, which was satisfied by attaching an LED strip to the top of our 25ft flagpole. Lastly, we detail two optional features which were not implemented in the final design: a phone charging system and additional storage compartments for items such as protein powder. Overall, the Emergency Water Station team has designed, constructed, and implemented a fully functioning prototype. All of our constraints and requirements were met, with the exception of additional lab and field testing for the operational temperature requirement. There are no predicted changes that will be made in the future, but improvements can always be made

Англійська мова для студентів електромеханічних спеціальностей

Навчальний посібник розрахований на студентів напряму підготовки 6.050702 Електромеханіка. Містить уроки, що структуровані за тематичними розділами, граматичний коментар, короткі англо-український і українсько- англійський словники та додатки, які спрямовані на закріплення загальних навичок володіння англійською мовою. Акцентований на ɨсобливості термінології, що застосовується у науково-технічній галузі, зокрема, в електромеханіці та виконання запропонованих завдань, що буде сприяти формуванню навичок перекладу з англійської та української мов, сприйняттю письмової та усної англійської мови, вмінню письмового викладення англійською мовою науково-технічних та інших текстів під час професійної діяльності, спілкуванню з професійних та загальних питань тощо

Design definition of a mechanical capacitor

A design study and analyses of a 10 kW-hr, 15 kW mechanical capacitor system was studied. It was determined that magnetically supported wheels constructed of advanced composites have the potential for high energy density and high power density. Structural concepts are analyzed that yield the highest energy density of any structural design yet reported. Particular attention was paid to the problem of 'friction' caused by magnetic and I to the second power R losses in the suspension and motor-generator subsystems, and low design friction levels have been achieved. The potentially long shelf life of this system, and the absence of wearing parts, provide superior performance over conventional flywheels supported with mechanical bearings. Costs and economies of energy storage wheels were reviewed briefly

Near-term hybrid vehicle program, phase 1. Appendix B: Design trade-off studies report. Volume 2: Supplement to design trade-off studies

Results of studies leading to the preliminary design of a hybrid passenger vehicle which is projected to have the maximum potential for reducing petroleum consumption in the near term are presented. Heat engine/electric hybrid vehicle tradeoffs, assessment of battery power source, and weight and cost analysis of key components are among the topics covered. Performance of auxiliary equipment, such as power steering, power brakes, air conditioning, lighting and electrical accessories, heating and ventilation is discussed along with the selection of preferred passenger compartment heating procedure for the hybrid vehicle. Waste heat from the engine, thermal energy storage, and an auxiliary burner are among the approaches considered

Novel Wine Pouring Machine

This Final Design Report outlines the “Novel Wine Opener” senior design project completed by a team of mechanical engineering students at California Polytechnic State University, San Luis Obispo. The project was sponsored by Bill Swanson, owner of the Center of Effort vineyard and winery in Edna Valley, CA. The goal of the project was to produce a novel wine pouring machine for the Center of Effort. This device should be able to remove the foil cap from a wine bottle, uncork the bottle, and pour a glass of wine at the winery and at public events. The finished product should fit the aesthetic of the remodeled winery and serve as an attraction for wine tasting visitors. After determining our sponsor’s needs and wants for the project, we refined the problem into a set of engineering specifications. Existing technologies were researched and compared to identify similar developments already on the market. The lack of similar technologies found confirmed the presence of a need that our project seeks to fill. The first step we took in tackling this design challenge was to divide the project into six subsystems: bottle gripping, foil removal, cork removal, lifting and pouring, pour volume sensing, and user interface. Our leading concepts comprise a rotating tower for foil and cork removal, a pivoting pouring tower to hold and pour the bottle, a load cell to measure the pour volume, and mechanical buttons and toggle switches for user interface. To verify the feasibility of our designs, we built conceptual and structural prototypes of the rotating tower, cork remover, and foil cutter. The next step in the design process was to redesign each individual function as needed. Prototyping highlighted areas in need of design changes. These changes were implemented, and new prototypes were made. This cycle continued until each individual function operated successfully. The final design consists of improved versions of the leading concepts selected before prototyping: rotating tower, pouring tower, bottle gripper, load cell weight sensing mechanism, and user interface. Next, the final design was manufactured and assembled with final materials. Most prototyping materials included plywood and acrylic. These materials were switched out with aluminum parts. After each function was successfully manufactured and functional, all subsystems were integrated together onto one base plate. Some redesigning and remanufacturing were necessary for successful integration of the entire device. Once the device was satisfactorily assembled, the device was tested against the engineering specifications originally identified at the beginning of the project. This document contains the research, ideation processes, design decisions, design outcomes, manufacturing processes, and test results of the entire process to date

Sensor Characteristics Reference Guide

The Buildings Technologies Office (BTO), within the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE), is initiating a new program in Sensor and Controls. The vision of this program is: • Buildings operating automatically and continuously at peak energy efficiency over their lifetimes and interoperating effectively with the electric power grid. • Buildings that are self-configuring, self-commissioning, self-learning, self-diagnosing, self-healing, and self-transacting to enable continuous peak performance. • Lower overall building operating costs and higher asset valuation. The overarching goal is to capture 30% energy savings by enhanced management of energy consuming assets and systems through development of cost-effective sensors and controls. One step in achieving this vision is the publication of this Sensor Characteristics Reference Guide. The purpose of the guide is to inform building owners and operators of the current status, capabilities, and limitations of sensor technologies. It is hoped that this guide will aid in the design and procurement process and result in successful implementation of building sensor and control systems. DOE will also use this guide to identify research priorities, develop future specifications for potential market adoption, and provide market clarity through unbiased informatio

Preliminary power train design for a state-of-the-art electric vehicle

Power train designs which can be implemented within the current state-of-the-art were identified by means of a review of existing electric vehicles and suitable off-the-shelf components. The affect of various motor/transmission combinations on vehicle range over the SAE J227a schedule D cycle was evaluated. The selected, state-of-the-art power train employs a dc series wound motor, SCR controller, variable speed transmission, regenerative braking, drum brakes and radial ply tires. Vehicle range over the SAE cycle can be extended by approximately 20% by the further development of separately excited, shunt wound DC motors and electrical controllers. Approaches which could improve overall power train efficiency, such as AC motor systems, are identified. However, future emphasis should remain on batteries, tires and lightweight structures if substantial range improvements are to be achieved

An integrated course of study in general science for the three consecutive grades in the junior high schools of a small industrial city

Thesis (M.A.)--Boston University, 1947. This item was digitized by the Internet Archive