scholarly journals Duomoto sport car with two-strolled transmission systems

2018 ◽  
Vol 19 (9) ◽  
pp. 173-178
Author(s):  
Stanisław Taryma ◽  
Grzegorz Ronowski ◽  
Krzysztof Brzozowski ◽  
Łukasz Lichota ◽  
Marcin Miotk ◽  
...  
Keyword(s):  
Mechanical Engineering ◽  
Rear Axle ◽  
Front Axle ◽  
Test Results ◽  
Combined System ◽  
Transmission Systems ◽  
Drive Torque ◽  
University Of Technology

The sports car, powered by two engines, designed and built by a team of four graduates of the Faculty of Mechanical Engineering at the Gdańsk University of Technology is prezented. One (engine) of them was placed at the front of the vehicle. It transmits the torque to the wheels of the front axle through a combined system. The second engine, located at the rear of the vehicle, in the same way transmits the drive torque to the wheels of the rear axle. The car named Duomoto was built on the basis of two Volkswagen Golf GT. It was subjected to road tests. The test results and conclusions are included in this article.

How Well Prepared are Students for Undergraduate Engineering Mathematics?

1995 ◽  
Vol 23 (4) ◽  
pp. 352-362 ◽  
Author(s):  
Duncan A. Lawson
Keyword(s):  
Diagnostic Test ◽  
Mechanical Engineering ◽  
Test Results ◽  
Mathematical Competence ◽  
Rule Of Thumb ◽  
Undergraduate Engineering ◽  
Engineering Mathematics ◽  
Level 3

Many universities admit students to degree courses in mechanical engineering from a wide variety of backgrounds. The majority enter with a study of A level mathematics. An increasing proportion enter having previously studied for BTEC qualifications. The conventional rule of thumb which is used is that BTEC level 3 is equivalent to A level. In this paper this rule of thumb is examined by comparing the performance of A level and BTEC students in a diagnostic test, taken at the start of their course, and the results of the end-of-year examination. The results of students entering the mechanical engineering stream of degree courses at Coventry University in 1991 and 1992 are used to provide the data for this study. The diagnostic test results also show the key areas of weakness in the level of mathematical competence of many students on entry to universities.

scholarly journals Exhaust emission from a vehicle engine operating in dynamic states and conditions corresponding to real driving

2019 ◽  
Vol 178 (3) ◽  
pp. 99-105
Author(s):  
Monika ANDRYCH-ZALEWSKA ◽  
Zdzisław CHŁOPEK ◽  
Jerzy MERKISZ ◽  
Jacek PIELECHA
Keyword(s):  
Rotational Speed ◽  
Time Derivative ◽  
Exhaust Emission ◽  
Test Results ◽  
Engine Operation ◽  
Vehicle Engine ◽  
University Of Technology ◽  
The Time Domain ◽  
Speed Characteristic ◽  
Dynamic States

The article presents the exhaust emission results from a diesel engine in dynamic states of engine operation in the driving tests: NEDC (New European Driving Cycle) and Malta test, developed at the Poznan University of Technology. The NEDC and Malta tests were carried out as simulations on the engine test bench mimicking the driving tests conditions. The test results of the emission of carbon monoxide, hydrocarbons and nitrogen oxides obtained in each of the tests were presented. The dynamic states have been classified de-pending on the time derivative value of the torque and engine rotational speed. Both the positive and negative as well as zero time deriv-ative values of torque and rotational speed were considered. Therefore, overall six types of dynamic states were analyzed. A high sensi-tivity of exhaust emission to various types of dynamic states was found. The exhaust emission sensitivity to dynamic states in the Malta test was found to be higher than for the NEDC test, although these tests have similar properties (average rotational speed and average torque). This is due to the fact that the NEDC test is created on the basis of the similarity of zero-dimensional characteristics of the cars speed characteristic, whereas the Malta test was designed in accordance with the principle of faithful representation in the time domain of the NEDC speed curve.

Comparison of Suspension Systems and Chassis of Selected Mars Rovers Analogs with a Focus on Introduced Improvement

2017 ◽  
Vol 260 ◽  
pp. 33-37 ◽  
Author(s):  
Michał Ostaszewski ◽  
Kazimierz Dzierżek
Keyword(s):  
Structural Analysis ◽  
Systems Analysis ◽  
Major Part ◽  
Mechanical Engineering ◽  
Mars Rover ◽  
Suspension Systems ◽  
University Of Technology ◽  
The University ◽  
Mars Exploration Rovers ◽  
Over Time

The article concludes with a thorough evaluation of an usefulness of suspension systems and chassis of Mars Rovers from Bialystok University of Technology and predictions for future Mars rover solutions. A development of technology and ever growing aspirations of mankind resulted in clear progress in the field of Mars exploration rovers. Competitions, involving analogs of Mars rovers, are increasingly more popular among academic societies. The main goal of mentioned initiatives, is to test possible solutions which, over time, may be used in rovers during extraterrestrial missions. The authors focused on a path of a Mars rover analogue development. In the first stage authors analyzed requirements of the University Rover Challenge organized by The Mars Society. Then the article concerns tasks that every modern Mars rover faces during its mission. Next authors considered Mars Rovers analogs designed and built in Faculty of Mechanical Engineering at Bialystok University of Technology. After application’s considerations, authors focused on suspension systems analysis. A major part of the article is a thorough structural analysis of suspension and driving systems of analog Mars rovers build at Faculty of Mechanical Engineering, Bialystok University of Technology [1]. Then there is an comparison of the Curiosity (fig. 1) rover suspension [2] and internal frame with #next Mars Rover.

Comfort and Handling of a Commercial Vehicle With Individual Front Suspension

2011 ◽  
Author(s):  
Hoda Yarmohamadi ◽  
Viktor Berbyuk
Keyword(s):  
Sensitivity Analysis ◽  
Rear Axle ◽  
Commercial Vehicle ◽  
Great Influence ◽  
Sensitivity Study ◽  
Front Axle ◽  
Front Suspension ◽  
Shock Absorbers ◽  
Handling Characteristics ◽  
Pareto Fronts

The main focus in the presented work is on the sensitivity analysis of the comfort and handling characteristics of a commercial vehicle with Individual Front Suspension (IFS). For the sensitivity analysis, two simulations in frequency domain are conducted: road input and steering input frequency responses. Employing the model of the tractor semitrailer combination for the above mentioned analyses, this study evaluates the influence of five damping coefficients — cab, front and rear axle shock absorbers — on our objectives. The results that are provided in Pareto fronts clearly show the great influence of the studied parameters, particularly the front axle and cab lateral dampers, on the vehicle comfort and handling for the performed simulations. Finally, the model is updated with the chassis and cab lateral damper coefficients to run a simulation on random roads for more detailed comfort examinations. This analysis confirms the obtained improvements in the outcome of the sensitivity study.

scholarly journals Application of GeoGebra software into teaching mechanical engineering courses

2018 ◽  
Vol 178 ◽  
pp. 07008
Author(s):  
Diyan M. Dimitrov ◽  
Stoyan D. Slavov
Keyword(s):  
Mechanical Engineering ◽  
Dynamic Strength ◽  
Teaching Mathematics ◽  
Test Results ◽  
Strength Of Materials ◽  
Internal Forces ◽  
Physical Phenomena

Mechanics courses traditionally characterize with a rather low percentage of passing students. Dynamic mathematical packages like GeoGebra are widely used nowadays for teaching mathematics, but its interactive capabilities can be used for simulation of different physical phenomena. In this article few interactive applets for Static, Dynamic, Strength of Materials and Theory of Mechanisms and Machines courses, are presented. An experiment with comparison of the test results of two group of students after the exercise beam about internal forces, shows that group trained with GeoGebra applets have significantly higher mean result.

Mechanical Engineering Curriculum Review by QFD Methodology: A Case Study

2010 ◽  
Author(s):  
M. A. Satter ◽  
M. R. Satter ◽  
J. Pumwa
Keyword(s):  
Quality Function Deployment ◽  
Teaching And Learning ◽  
Mechanical Engineering ◽  
Engineering Curriculum ◽  
Planning Tool ◽  
Study Program ◽  
Curriculum Review ◽  
University Of Technology ◽  
Review Procedure

The paper deals with the design and review of curriculum of a formal study program employing the Quality Function Deployment (QFD) methodology that can take into account of the requirements of various stakeholders such as, academics, students, sponsors, employers, and accreditation agencies. Starting with a simple model for teaching and learning, in which curriculum is one of the basic elements, the paper describes curriculum review procedure employing the QFD planning tool known as House of Quality. Then, it presents a case study on the review of mechanical engineering program of the PNG University of Technology.

Research for a Uniform Quality Grading System for Tires VI. Comparison of the Effect of Front and Rear Wheel Drive Vehicles on Projected Tread Wear of a Tire

1971 ◽  
Vol 44 (4) ◽  
pp. 960-961 ◽  
Author(s):  
A. Kondo ◽  
F. C. Brenner
Keyword(s):  
Rear Axle ◽  
Rear Wheel ◽  
Front Axle ◽  
The Other ◽  
Grading System ◽  
Wheel Drive ◽  
Quality Grading ◽  
Rear Wheel Drive

Abstract The total number of miles that could be expected for a tire was projected and compared from a test involving two vehicles, one with a front axle drive and one with a rear axle drive. On the front axle drive vehicle the tires when changed by forward-X pattern each 1000 miles wore at twice the rate on the front wheels as on the rear; on the other vehicle they wore at about the same rate on both sets of wheels. The projected mileages for the tires on the two vehicles were 22,400 and 22,500 miles which is not appreciably different.

scholarly journals Professor Jan Oderfeld (1908-2010). A Tribute on the Occasion of Unveiling the Commemorative Plaque at Warsaw University of Technology

2015 ◽  
Vol 62 (3) ◽  
pp. 307-314
Author(s):  
Krzysztof Kędzior ◽  
Cezary Rzymkowski
Keyword(s):  
Mechanical Engineering ◽  
University Of Technology

Streszczenie Absolwent Wydziału Mechanicznego Politechniki Warszawskiej (1930), współtwórca pierwszych w Polsce działających modeli silników odrzutowych: turbinowego (1931) oraz pulsacyjnego (1933). Od 1932 r. pracował w Wytwórni Silników Skoda - PZL, gdzie współuczestniczył w projektowaniu, budowie i badaniu nowoczesnego lotniczego silnika rzędowego. W latach 1937-1939 wykładał przedmiot Silniki Lotnicze w Warszawskiej Szkole Podchorążych Lotnictwa. Po wojnie początkowo wykładał w Wyższej Szkole Inżynierskiej im. H. Wawelberga i S. Rotwanda, a następnie od roku 1949 na Politechnice Warszawskiej, gdzie od roku 1955 do emerytury w 1978 r. był kierownikiem Katedry Teorii Maszyn i Mechanizmów a 19 lutego 2008 r., z okazji setnej rocznicy urodzin, został uhonorowany tytułem Doktora honoris causa. Był twórcą polskiej szkoły TMM i współzałożycielem (1969) Międzynarodowej Federacji Teorii Maszyn i Mechanizmów. W latach 1945-1951 pracował także w Polskim Komitecie Normalizacyjnym, gdzie był twórcą polskiego systemu norm i promotorem statystycznej kontroli jakości wyrobów w przemyśle - w tej dziedzinie doktoryzował się w 1951 r. W latach 1951-1974 działał też w PAN, gdzie prowadził grupę zastosowań matematyki. Był inicjatorem utworzenia w 1954 r. i współredaktorem kwartalnika Archiwum Budowy Maszyn (obecnie: Archive of Mechanical Engineering). Był aktywnym członkiem Naczelnej Organizacji Technicznej, w tym inicjatorem i aktywnym współorganizatorem Olimpiad Wiedzy Technicznej dla uzdolnionych technicznie licealistów.

scholarly journals THE POSSIBILITIES OF CHOSEN APPLICATIONS OF CONTROL AND NAVIGATION SYSTEMS IN GENERAL AVIATION AIRCRAFT AND UNMANNED AIR VEHICLES

Aviation ◽  
2007 ◽  
Vol 11 (2) ◽  
pp. 23-30 ◽  
Author(s):  
Jan Gruszecki ◽  
Andrzej Tomczyk ◽  
Boguslaw Dołega ◽  
Tomasz Rogalski ◽  
Pawel Rzucidło
Keyword(s):  
Control Systems ◽  
Flight Control ◽  
Mechanical Engineering ◽  
General Aviation ◽  
Parameter Measurement ◽  
Navigation Systems ◽  
Technology Research ◽  
University Of Technology ◽  
And Control ◽  
Air Vehicles

The development of informatics and sensor techniques has extended the possibilities of flight parameter measurement. It allows for extensive modification of control and navigation systems in air vehicles. This advance can also be noticed in the research of the Department of Avionics and Control at the Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology. Research in the area of digital flight control systems was initiated at the Department of Avionics and Control over twenty years ago.

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