School of Manufacturing Engineering (FYP)http://dspace.unimap.edu.my:80/xmlui/handle/123456789/11292024-03-29T14:48:50Z2024-03-29T14:48:50ZStudy and analysis of gas leakage and lubricating system for rotary valve of internal combustion engineMohd Sayuti, Ebinhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/779192023-02-23T00:55:51Z2009-04-01T00:00:00ZStudy and analysis of gas leakage and lubricating system for rotary valve of internal combustion engine
Mohd Sayuti, Ebin
This project present new seal design of seal for new rotary valve for internal
combustion engine. Seal designed to decrease gas leakage in rotary valve especially at high
gases pressure area. In this paper will show calculation of gas leakage and lubricating
process for effective and reliable work of an engine. All the gas leakage calculation and
lubricating process includes next step; calculate the clearance between rotary valve and
housing, area of rotary valve that respond to appropriate lubricating process, evaluate the
level of oil burning into chamber engine, chose optimal geometry of lubricating grooves,
and calculate necessary oil flow rate. At the end of this project, the function of seal and
lubricating in new rotary valve engine design for rotary valve will discovered. Beside that,
this paper will tell about the advantages and disadvantages of rotary valve.
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2009-04-01T00:00:00ZErgonomics intervention in manual milling operation workstationChow, Chee Hoehttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/779142023-02-22T08:51:31Z2016-01-01T00:00:00ZErgonomics intervention in manual milling operation workstation
Chow, Chee Hoe
Manufacturing sector is vital in driving Malaysia’s economy and this project’s focus is
to induce the ergonomics and safety concerns in the sub-element of this sector. Manual
milling operation is a precise and accurate job that requires the operators stay alert even
in the prolonged working hours. The milled product is vital since manual milling
operation is a pre-machining process where follow by other machining processes. The
behavior of the operators is directly influence the product quality where the adequate
solutions have to solve the problem arises from product dimensional accuracy and safe
working posture. The intention of this project is to apply technical improvement or
being called as engineering control on the manual milling operation workstation. The
significant risk factors which influence the product quality and the working posture
were being identified through questionnaire surveys among twenty workers in Multi
Precision Industries Sdn Bhd (MPI). The analysis of the significant factors were being
carried out by using RULA posture assessment method and Design of Experiment
(DoE). Furthermore, the findings of the analysis and the preferable design features
constituted in the questionnaires were transformed into quality function deployment
(QFD) and the best conceptual workstation was selected via concept screening method.
Based on the CATIA®-RULA analysis, the implementation of the new workstation
would reduce the RULA score and at the same time DoE optimized the new conceptual
workstation. This project expects that the new conceptual workstation will greatly
improve the product dimensional accuracy and the working posture.
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2016-01-01T00:00:00ZDesign improvement on a wheelchair with addition of a semi-auto lift mechanismCho, Hui Khimhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/779132023-07-13T04:03:31Z2016-01-01T00:00:00ZDesign improvement on a wheelchair with addition of a semi-auto lift mechanism
Cho, Hui Khim
This project is about the design improvement on a wheelchair with the addition of a semiauto
lift mechanism. This study is focused on Paraplegia Patients because they are the major
wheelchair users. Nowadays, wheelchair seats of the common wheelchairs found in the
market was not adjustable and lack of flexibility. Most of the wheelchair users face the
difficulty of reaching stuff located high places. So, to counter these problems, the aim of this
project is to design an adjustable wheelchair seat and make the wheelchair seat easy to control.
A questionnaire has been designed and distributed to wheelchair users in order to collect data
on customer needs and apply them for concept generation through Quality Function
Deployment (QFD). Screening and scoring methods are used to select one final concept
design among the three concepts generated. Then, engineering analysis and ergonomic
assessment have been performed for the final design concept in order to determine the
parametric values and the risk level of the proposed design. The simulation result obtained is
attached to engineering details drawing. Next, the product is fabricated and tested by users
for functional testing, ergonomic assessment and FMEA. The result shows that the improved
has satisfied the functional and ergonomic requirements. The semi-auto lift mechanism
provides an elevation of 9 cm seat height achievement. Based on economic analysis, the
proposed price for the product is RM 1190. In conclusion, both of the objectives of the project
as mentioned earlier have been achieved
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2016-01-01T00:00:00ZA study on miniature compressed air storage system using double-acting cylinder for portable deviceTham, Chui Seehttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/757292022-07-01T01:42:35Z2016-06-01T00:00:00ZA study on miniature compressed air storage system using double-acting cylinder for portable device
Tham, Chui See
Nowadays, there are many research study on the pneumatic device on vehicles. There is some application using compressed air storage system to produce vehicle power. However, there are some troubles facing to produce compressed air for outdoor purpose, since most of the compressors are in large size which will cause limited working space. Also, most of the
compressors are not portable and hand-carrying size. The project objectives to investigate the parameters of a miniature air compressor during the reciprocation process and to analyze the compressed air pressure of piston type double-acting cylinder for the miniature air
compressor. The piston rod is connected to connecting rod and pedal, which the movement
of the pedal will convert a kinetic energy to the piston and generate compressed air inside the
storage tank. Synchronization of 5/3 Ways Directional Control Valves is the key of the
system to ensure the flow of compressed air well-kept in the storage tank. The pressurized
air is able to be used into kinetic movement by reciprocating piston. The experiment was
carried out manually by hand to generate compressed air until 200kPa. The results of
pressurized air of 500kPa into kinetic movement is shown.
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2016-06-01T00:00:00Z