Fluid Power Systems

Code:

L.EM025

Acronym:

SHP

Keywords
Classification	Keyword
OFICIAL	Automation

Instance: 2024/2025 - 1S

Active?	Yes
Responsible unit:	Automation, Instrumentation and Control Section
Course/CS Responsible:	Bachelor in Mechanical Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L.EM	228	Syllabus	3	-	6	58,5	162

Teaching language

Portuguese

Objectives

Fluid Power Systems for drive, transmission and control through fluid energy: hydraulics and pneumatics.
On conclusion of this course the student should be able to understand the technologies of hydraulic and pneumatic systems, the functional properties, sizing and selection of parts for an application.

Learning outcomes and competences

On conclusion of this course the student should be able to:
-understand the technologies of Hydraulic and Pneumatic systems,
-sizing pneumatic and hydraulic systems,
-understand the functional properties of the elements included in pneumatic and hydraulic circuits,
-be able to select components for an application
- be able to design hydraulic and pneumatic systems, following a specification.

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Electricity

Fluid mechanics

Mechanics: kinematics

Program

Fluid Power systems: energy and power by fluids. Main application areas. Power systems.
Pneumatic systems technology:
Compressed air: production, conditioning and distribution.
Actuators: types, properties, selection and sizing
Control valves: directional, pressure and flow control
ISO 1219 graphical representation of fluid power systems.
Pneumatic circuit analysis and simulation.
Design and selection for application.

Hydraulic systems technology:
Overall analysis of hydraulic systems applications
Pumps and motors. Actuators. Types, technology aspects, sizing. performance characteristics. Efficiency aspects.
Control valves: directional, pressure and flow control
Graphical representation
Auxiliary components: filters and filtering, cooling, instrumentation.
Hydraulic circuit analysis, sizing and design.
System and component experimental testing

Mandatory literature

Bosch; Bosch-Hydraulik

Complementary Bibliography

Katharina Schmitz; Fundamentals of fluid power. ISBN: 978-3-8440-6306-6
Hubertus Murrenhoff; Fundamentals of fluid power. ISBN: 978-3-8440-4818-6

Teaching methods and learning activities

The course involves:
a)formal lecture classes, including tutorials for circuit analysis, sizing and design (TP)
b)extensive laboratory support sessions (PL)

Classes are fully supported by multimedia aids.
For each laboratory class there are milestones to be reached

Software

Scheme Editor
FLUIDSIM

keywords

Technological sciences > Engineering > Control engineering > Automation

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	75,00
Teste	25,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Estudo autónomo	83,50
Frequência das aulas	58,50
Trabalho laboratorial	20,00
Total:	162,00

Eligibility for exams

In order to obtain valid frequency the student must not exceed the limit of 25% of absences from PL classes and 25% from TP classes.

Calculation formula of final grade

The classification of the curricular unit is carried out based on two components of individual evaluation: a written exam (EE) and a distributed evaluation.
The distributed evaluation is composed of two mini laboratory written tests (TL1, TL2).
 
The various evaluation components are classified from 0 to 20 and have the following weights for the final classification:
EE - Written exam to be taken during exam periods: 75%.
TL1 - Mini written laboratory Test about pneumatics, to be carried out during week seven of the school calendar, during the PL class schedule: 12.5%.
TL2 - Mini written laboratory Test about Hydraulics, to be carried out during the week, thirteenth of the school calendar, at the time of the PL class: 12.5%.
 
Non-attendance to one of the evaluation components corresponds to a score of zero values for the purpose of calculating the final classification.
 
For approval, a minimum classification of 8.5 (out of 20) is required in the written exam (EE).
 
Distributed assessment (TL1, TL2) is not subject to appeal("recurso”) or improvement ("melhoria").
 
The written exam assessment (EE) is subject to appeal("recurso") at the time provided for this purpose.

Examinations or Special Assignments

Non appliable.

Internship work/project

Non appliable.

Special assessment (TE, DA, ...)

Students with special status that exempt them from attending classes are subject to the same assessment methods as ordinary students. The test includes a written exam (75%) and a mini laboratory test (25%).

Classification improvement

The improvement of classification focuses only on the component of the written exam (EE), to be carried out in the periods foreseen for this purpose.

For the calculation of the final classification for improvement, the weight of the written exam remains at 75%, with the remaining 25% corresponding to the classifications already obtained in the distributed component (TL1 and TL2).