Diesel locomotive shed is an industrial – technical setup, where repair & maintenance works of diesel of diesel locomotives is carried out, so as keep loco working properly.
It is intersecting topic in a mechanical engineering flied which will full fill the things relative to the air brake system and also doubt regarding the brake system in railways .
As we seen the brake system in rails in your day to day life.
This presentation was given at the end of the Spring 2016 semester for the class at Georgia Tech AE 4802 Digital Design and Manufacturing. The presentation encompassed the Hyperloop concept and built upon preliminary analysis done by the GT Hyperloop Team
The aim is to design and to develop an air brake system based on exhaust gas is called “fabrication of air brake system using engine exhaust gas”. The main aim of this project is to reduce the workloads of the engine drive to operate the air compressor, because here the compressor is not operated by the engine drive.
Here we are placing a turbine in the path of exhaust from the engine. The turbine e is connected to a dynamo by means of coupling, which is used to generate power. Depending upon the airflow the turbine will start rotating, and then the dynamo will also starts to rotate. A dynamo is a device which is used to convert the kinetic energy into electrical energy. The generated power can be stored in the battery and then this electric power has loaded to the D.C compressor. The air compressor compresses the atmospheric air and it stored in the air tank and the air tank has pressure relief valve to control the pressure in the tank . The air tank supplies the compressed pneumatic power to the pneumatic actuator through solenoid valve to apply brake. The pneumatic actuator is a double acting cylinder which converts hydraulic energy into linear moti on.
This paper presents about the design of cam reciprocating engine. For this new design of cam operated reciprocating internal combustion engine the changes such as removing of crank shaft, introducing of cam, retention of exhaust gas particles exist in the clearance volume of the reciprocating internal combustion engine will be removed by the piston itself instead of fresh air and fuel particles as used in the current engines and to improve the suction in the engine cylinder, the intake of fresh air and fuel particles will be happens after creation of small vacuum inside the cylinder. This project mainly focuses on improving the volumetric efficiency of the reciprocating internal combustion engine by removing all of the exhaust gas particles present in the clearance space.
Diesel locomotive shed is an industrial – technical setup, where repair & maintenance works of diesel of diesel locomotives is carried out, so as keep loco working properly.
It is intersecting topic in a mechanical engineering flied which will full fill the things relative to the air brake system and also doubt regarding the brake system in railways .
As we seen the brake system in rails in your day to day life.
This presentation was given at the end of the Spring 2016 semester for the class at Georgia Tech AE 4802 Digital Design and Manufacturing. The presentation encompassed the Hyperloop concept and built upon preliminary analysis done by the GT Hyperloop Team
The aim is to design and to develop an air brake system based on exhaust gas is called “fabrication of air brake system using engine exhaust gas”. The main aim of this project is to reduce the workloads of the engine drive to operate the air compressor, because here the compressor is not operated by the engine drive.
Here we are placing a turbine in the path of exhaust from the engine. The turbine e is connected to a dynamo by means of coupling, which is used to generate power. Depending upon the airflow the turbine will start rotating, and then the dynamo will also starts to rotate. A dynamo is a device which is used to convert the kinetic energy into electrical energy. The generated power can be stored in the battery and then this electric power has loaded to the D.C compressor. The air compressor compresses the atmospheric air and it stored in the air tank and the air tank has pressure relief valve to control the pressure in the tank . The air tank supplies the compressed pneumatic power to the pneumatic actuator through solenoid valve to apply brake. The pneumatic actuator is a double acting cylinder which converts hydraulic energy into linear moti on.
This paper presents about the design of cam reciprocating engine. For this new design of cam operated reciprocating internal combustion engine the changes such as removing of crank shaft, introducing of cam, retention of exhaust gas particles exist in the clearance volume of the reciprocating internal combustion engine will be removed by the piston itself instead of fresh air and fuel particles as used in the current engines and to improve the suction in the engine cylinder, the intake of fresh air and fuel particles will be happens after creation of small vacuum inside the cylinder. This project mainly focuses on improving the volumetric efficiency of the reciprocating internal combustion engine by removing all of the exhaust gas particles present in the clearance space.
The IC engine has seen numerous revolutionary and e volutionary modifications in technology and design over the past few decades. The sole motto behind the modifications wa s to increase the overall efficiency of the IC Engi ne including volumetric and thermal efficiency. Recently few benchmarking techn ologies like the CRDI,MPFI,HCCI,etc. in the Otto cycle and Diesel cycle engines have created an enormous revolution in the automobile industry. In spite of these technologica l and design advances,the efficiencies are not being more than a particular l imit. However,the concept of split cycle engines has dra stically increased the overall performance in all respect. The split cycle concept basically separates the fou r strokes of the conventional cycle. The Scuderi engine one of the best-in-class engine desi gns based on the split cycle concept. The Scuderi engine works on the split cycle and gives higher efficiency than the previous split cycle engines resulting overall high perform ance. It also eliminates the problems faced by previous engines based on the spl it cycle in terms of breathing (volumetric efficien cy) and thermal efficiency. This paper throws light on the greater volumetric,thermal and overall efficiency key points related t o the Scuderi Engines.
THIS IS THE PRESENTATION OF THE FOUR STROKE HEAT ENGINE.WHICH COULD BE VERY USEFUL FOR THE GUYS OF MECHANICAL BRANCH.
THIS PRESENTATION FILE CONSISTS OF THE ENGINE'S TYPES,DIFFERENT STROKES THERMODYNAMIC ANALYSIS OF THE ENGINE ALNOG WITH THE ENGINE EFFICIENCY AND TOTAL WORK OUTPUT OF OTTOENGINE.
Performance Evaluation for Production of 5000kgHydraulic JackIOSR Journals
The report submitted presents detailed performance evaluation analysis for production of 5tonne
hydraulic jack. The main task is to produce it using two approaches namely conversional and reverse
engineering. Conversional design team were able to design the jack with all the necessary tolerance and limits,
those involve design calculations, producing standard drawing and cost analysis on each part involve. While
reverse engineering team were able to produce the jack through reverse engineering procedures and approach,
this involve selection of materials needed to produce the parts with our machines in the workshop, test analysis
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Proulsion I - SOLVED QUESTION BANK - RAMJET ENGINESanjay Singh
The material is only for academic purpose and for preparation of exams. Contents are copied from reference books. Not for revenue generation of any kind.
Air Compression and Electricity Generation by Using Speed Breaker with Rack A...IJMER
On roads, speed breakers provided to control the speed of traffic in rushed areas. The
potential energy in terms of weight of vehicle is loss on speed breaker can be utilized for useful
purposes. This paper describes the potential energy of such type of energy available on roads and its
utilization for useful work. The stages of development of a speed breaker device are described and the
mechanism to generate electricity using rack, pinion and speed increasing gear box and generator
and store compressed air with the help of piston cylinder compressor arrangement. Whenever the
vehicle is allowed to pass over the speed breaker dome, it gets pressed downwards. As the springs are
attached to the dome, they get compressed and the rack, which is attached to the bottom of the dome,
moves down in reciprocating motion. Since rack has teeth connected to pinion there is conversion of
reciprocating motion of rack in to rotary motion of pinion, but the two gears rotate in opposite
direction. So that shafts will rotate with certain RPM these shafts are connected through a belt drive
to the generators, which converts the mechanical energy into electrical energy. The rack is attached
to piston rod of cylinder so downward stroke of rack we can use for air compression in reservoir, with
help of piston cylinder arrangement. Simultaneously reciprocating piston cylinder arrangement
compresses the air and stores it in the reservoir. We can use the generated electricity and compressed
air for different purpose
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In this presentation, we have discussed a very important feature of BMW X5 cars… the Comfort Access. Things that can significantly limit its functionality. And things that you can try to restore the functionality of such a convenient feature of your vehicle.
Comprehensive program for Agricultural Finance, the Automotive Sector, and Empowerment . We will define the full scope and provide a detailed two-week plan for identifying strategic partners in each area within Limpopo, including target areas.:
1. Agricultural : Supporting Primary and Secondary Agriculture
• Scope: Provide support solutions to enhance agricultural productivity and sustainability.
• Target Areas: Polokwane, Tzaneen, Thohoyandou, Makhado, and Giyani.
2. Automotive Sector: Partnerships with Mechanics and Panel Beater Shops
• Scope: Develop collaborations with automotive service providers to improve service quality and business operations.
• Target Areas: Polokwane, Lephalale, Mokopane, Phalaborwa, and Bela-Bela.
3. Empowerment : Focusing on Women Empowerment
• Scope: Provide business support support and training to women-owned businesses, promoting economic inclusion.
• Target Areas: Polokwane, Thohoyandou, Musina, Burgersfort, and Louis Trichardt.
We will also prioritize Industrial Economic Zone areas and their priorities.
Sign up on https://profilesmes.online/welcome/
To be eligible:
1. You must have a registered business and operate in Limpopo
2. Generate revenue
3. Sectors : Agriculture ( primary and secondary) and Automative
Women and Youth are encouraged to apply even if you don't fall in those sectors.
𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
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"Trans Failsafe Prog" on your BMW X5 indicates potential transmission issues requiring immediate action. This safety feature activates in response to abnormalities like low fluid levels, leaks, faulty sensors, electrical or mechanical failures, and overheating.
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SARM Engine - A new concept of Concentric Rotary Engines
1. DEPARTMENT OF MECHANICAL ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERING VISWAJYOTHI COLLEGE OF
ENGNIEERING AND TECHNOLOGY
Guided By:- Presented By:-
A STUDY ON A NEW CONCENTRIC
ROTORY ENGINE
AJO ISAAC JOHN
ASST.PROFESSOR
ME Dept.
ANUROOP PA
REG NO: VJC15ME029
ROLL NO: 15
2. DEPARTMENT OF MECHANICAL ENGINEERING
VISION AND MISSION
DEPARTMENT
Vision :
• “ Moulding socially committed engineers capable to meet the global challenges in
the mechanical engineering stream”
Mission :
• To provide ample facilities to foster excellent ambiance for teaching , learning
process in the department.
• To enhance the creative ideas, analytical talents and soft skills in the students to
cope with emerging trend in technical field.
• To enable the students to meet real life problems in mechanical engineering with a
zeal to human and ethical values.
2
3. DEPARTMENT OF MECHANICAL ENGINEERING
OBJECTIVE
To study the principle and working of basic rotary engines
To study the new SARM rotary engine in contrast with others
To study the advantages and disadvantages of the mentioned engine
To observe the impact of the mentioned engine in the society and technological
world
3
4. DEPARTMENT OF MECHANICAL ENGINEERING
In general, there are two main types of internal combustion engines: the reciprocating and the rotary
engines.
On the one hand, apart from the technologies that are not yet in the market, the core internal combustion
engines Research and Development is mainly related to the reciprocating engine improvement.
One of the core disadvantages of reciprocating engine is the mechanical system responsible for the
conversion of the reciprocating to rotational motion.
On the other hand, the similar research in rotary engines is limited. It solely focuses on the only
commercially available rotary engine: the Wankel-type engine
INTRODUCTION
4
5. DEPARTMENT OF MECHANICAL ENGINEERING
INTRODUCTION
Here the idea is an innovative type of rotary engine and its possible contribution to a significant
increase in thermal efficiency and power density.
The main idea behind the present configuration is in envisaging an engine that avoids the drawbacks
of existing devices, leading so to a more efficient and environmental friendlier source of power
production.
The utilization of a modified Atkinson thermodynamic cycle allows a remarkable efficiency
improvement at a theoretical level.
As spark ignition (SI) engine efficiency is 32 to 35%, the Atkinson-type engines have efficiencies
near 40%
5
6. DEPARTMENT OF MECHANICAL ENGINEERING
Table 1 : Modern technological developments in ICE
Recent Advancements
6
7. DEPARTMENT OF MECHANICAL ENGINEERING
THE CONCENTRIC ROTARY ENGINE
7
Fig.1 The concentric rotary engine
8. DEPARTMENT OF MECHANICAL ENGINEERING
Working Principle
8
Fig.2 Separate Chamber Concept
A compression chamber (CPC = Compression Chamber) is
necessary for the ambient air to enter and get compressed up
to the desired compression ratio.
This chamber can be highly cooled to lower the peak temperature
developed during the combustion process
To transfer the compressed air from the compression chamber to
the combustion chamber a third chamber - the pressure chamber
(PC = Pressure Chamber) – is necessary.
This chamber stores air under high pressure, which is the pressure
that air reaches at the end of the compression process.
9. DEPARTMENT OF MECHANICAL ENGINEERING
Working Principle
9
Fig.3 The main moving part consisting of two pairs
of pistons (α & β), motion arm and engine shaft.
The engine comprises of two pairs of
symmetrically located pistons (each pair
consists of one CPC- and one CBC-piston).
The symmetrically located pairs of pistons
balance the engine, neutralizing oscillations
due to centrifugal and inertial forces.
The engine’s pistons rotate on different
rotation radius (RCPC & RCBC)
One or more motion arms transfer the motion
of the CBC-piston to the engine shaft which
subsequently moves the CPC-piston
10. DEPARTMENT OF MECHANICAL ENGINEERING
Compared to most SI engines, where all processes take place within the same space but during different
strokes, in this engine, all processes occur simultaneously but in separate chambers.
There is an extra intermediate chamber (called pressure chamber) between the compression and
combustion chamber
This feature allows the independent optimization of each thermodynamic process (intake, compression,
combustion, expansion)
The generated symmetry and its inherent concentric operations eliminates the mechanical vibrations and
diminishes the sound effects
THE CONCENTRIC ROTARY ENGINE
10
11. DEPARTMENT OF MECHANICAL ENGINEERING
WORKING
11
Fig.4 Free Rotation Of CPC piston
Phase I: Free Rotation of the CPC Piston
Initially, the CPC piston (α) moves freely inside the inner
toroidal chamber (Figure 4).
The cylindrical pressure chamber (PC) is isolated from its
neighboring chambers and stores air under high pressure.
The pressure inside the PC depends on the pressure
developed inside the CPC at the end of the compression
process.
12. DEPARTMENT OF MECHANICAL ENGINEERING
Contd..
12
Fig.5 Intake and Compression process
Phase II: Intake and Compression Process
All intake processes take place at the back side of the CPC piston and all
compression processes at the front side of the same piston (Figure 4).
All combustion-expansion processes take place at the back side of CBC-
piston and all exhaust removals at its front side.
When the CPC sliding port (γ) closes, the piston drags ambient air through
the intake port (δ) and fills the CPC while the piston is rotating.
At the same time, the compressed air is trapped between the CPC piston (α)
and CPC sliding Port (γ’).
The first sliding port allows for a successful intake process while the second
one enables the compression to take place respectively
13. DEPARTMENT OF MECHANICAL ENGINEERING
Contd…
13
Fig.6: end of compression process.
Phase III: End of Compression Process
There is a moment, defined by the desired compression
ratio, when the compression process comes to its end and
then the pressure inside the CPC is equal to the pressure
inside the PC (Figure 6).
14. DEPARTMENT OF MECHANICAL ENGINEERING
Contd…
14
Fig.7: communication of the chambers.
Phase IV: Air Transfer Process
All valves open and the communication of the PC with both other
chambers (CPC & CBC) is allowed (Figure 7).
Simultaneously, high-pressure air is forced to move from the PC to
the CBC.
When the high pressure volume VCPC + PC connects with the low-
pressure volume V CBC, a united volume VCPC + PC + CBC is formed.
At the same time, the injection process initiates. Fuel is injected
either inside the PC or the CBC.
15. DEPARTMENT OF MECHANICAL ENGINEERING
Contd…
15
Fig.8: End of air transfer process - CBC
valve closes.
Phase V: End of Air Transfer Process (CBC Valve
Closes) Ignition and Combustion Process
The compressed air transfer continues until the pressure inside
the CBC volume comes to its highest value. At that point,
CBC-valve closes (Figure 8).
The high-pressure air-fuel mixture is ignited at the back side of
the CBC-piston, and the combustion process takes place.
Simultaneously, the front side of the same piston removes the
exhaust gases from the previous operation cycle through the
exhaust port (ε) to the environment (Figure 9).
16. DEPARTMENT OF MECHANICAL ENGINEERING
Contd…
16
Fig. 9: End of high-pressure recovery
inside PC - CPC valve closes.
Phase VI: End of High-Pressure Recovery Inside
the Pc (CPC Valve Closes)
Once the pressure inside the pressure chamber becomes
equal to the pressure it was before the valves open, the
CPC-valve closes, and the CPC-sliding port opens to
allow the CPC piston to pass through (Figure 9)
17. DEPARTMENT OF MECHANICAL ENGINEERING
Advantages of Designing a Concentric Rotary Engine
Apart from the main reason of avoiding extra components for translating the reciprocating motion to rotating,
there is also a secondary reason.
In reciprocating engines, the net force exerted on the shaft ends up being much smaller than the pressure force
applied to the piston.
The high pressure developed inside the combustion chamber (FK) applies a force on the piston that is much
greater than the force transferred to the engine shaft (FT).
On the other hand, the latter is the only force responsible for the engine’s torque generation. So, no matter how
great pressure force is developed inside the combustion engine, only a portion of that force (FT) is responsible
for the power production
A concentric rotary engine allows 100% of the pressure force applied to the piston to be transmitted
tangentially on the outer surface of the engine shaft, taking so full advantage of the pressure force that
generates power
Concentric Rotary Engine
17
18. DEPARTMENT OF MECHANICAL ENGINEERING
The Wankel type engine is famous for its significantly higher power density than any other commercial
engine type. Each power stroke lasts 90o of the rotor’s rotation.
Since the driveshaft (output shaft) spins three revolutions for each revolution of the rotor, each power
stroke lasts through 270 o of the output shaft’s rotation
The SARM engine allows the production of a power stroke every 180o as it consists of two symmetrical
pistons responsible for each process. 9o are used for the air transfer from the PC and 11o for the CBC-
piston to pass and reveal the exhaust port. Thus, 160o out of 180o produce the engine’s mechanical work.
For all these reasons, the SARM engine is capable of reaching a higher power to weight ratio than any
other commercially available engine.
POWER DENSITY
18
20. DEPARTMENT OF MECHANICAL ENGINEERING
Higher efficiency, almost constant at the entire speed range, because of the existence of a pressure
chamber.
Atkinson thermodynamic cycle (+20%).
Fewer moving parts, resulting in lower friction losses.
Significantly lower weight (up to 6 times).
Greatly reduced volume (up to 5 times).
Few moving parts and thus oil usage as low as possible
Does not need a flywheel due its motion arm and pistons.
Industry
Can replace existing IC engine applications
Decreased engine volume allows the inspiration of new vehicle designs
Energy
Low fuel consumption engines
Environment
Better quality emissions
Advantages
20
21. DEPARTMENT OF MECHANICAL ENGINEERING
The project is yet to be realized into practice
Complicated Valve and slide port timings
No cycle can be utilized in full potential and efficiency may not be as high as
calculated
Activity inside the pressure chamber cannot be controlled
Manufacturing and assembly is a complex process
The existing automotive designs would be changed and this poses a challenge
Disadvantages
21
22. DEPARTMENT OF MECHANICAL ENGINEERING
Automotive
Heavy duty engines
Hybrid vehicles
Shipping
Commercial and passenger ships
Aviation
Large drones
Small aircrafts
Energy
Oil platforms
Electricity production
Applications
22