Working Principles Of Polydyne Cams and High Speed Cams

Working and application of Polydyne cam systems

 Basically, the purpose of a camshaft in an internal combustion engine is to open and close the valves in correct sequence. In the Otto four-cycle engine, this sequence is timed in relation to the crankshaft and pistons. The ultimate objective of the cam-shaft function is to "trap" the greatest possible weight of fuel/air mixture in the cylinders to attain 100% volumetric efficiency.

By applying the "Polydyne" formula, it was possible for the first time to design the ca shape to provide the desired valve action. This revolutionary system of cam design recognizes the fact that flexibility cannot be reduced or eliminated but, can be compensated for. However, with the advances through the years in Cylinder Head porting and induction system design, the "Polydyne" Camshafts eventually reached their design limitation

What is polydyne cam or polynomial cam ?

Design Of polydyne cams

Cam and follower relations for polydyne cams

Cam profile generation of polydyne cams and High speed cams

Derivation for polydyne cam lift

Mathematical representation for polydyne cam 

Application of high speed cams

Advantages of polydyne cams

Vibration response of polydyne cam

How to solve polydyne cam problems

Drawing polynomial cam profiles

Polydyne cam ppt,Polydyne pdf

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Working and Application Of Air Springs

Use of Air springs in Automobiles
Main Components of Air springs
Types Of Air Springs
Advantages of Air springs over conventional springs
Design considerations for Air springs
Selection of Air springs and criteria of Air spring selection
Manufacturing of Air springs
Special uses of Air spring systems
Non-Conventional springs
Air Spring Seminar Report,Air spring PDF,Air Spring ppt,Air spring Slide Presentation

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Seminar On Fusion Propulsion Engine

Fusion Propulsion Engine Seminar Report

Fusion-based nuclear propulsion has the potential to enable fast interplanetary transportation. Due to the great distances between the planets of our solar system and the harmful radiation environment of interplanetary space, high specific impulse (Isp) propulsion in vehicles with high payload mass fractions must be developed to provide practical and safe vehicles for human spaceflight missions.reactions that occur in the core of the sun. The enormous energy created from those reactions is expelled from the engine to provide thrust. Using this type of propulsion system, a spacecraft could speed to Mars in just about three months. It would take conventional rockets at least seven months to reach Mars.Fusion reactions release an enormous amount of energy, which is why researchers are devising ways to harness that energy into a propulsion system. A fusion-powered spacecraft could move up NASA's schedule for a manned Mars mission. This type of spacecraft could cut travel time to Mars by more than 50 percent, thus reducing the harmful exposure to radiation and weightlessness.The building of a fusion-powered spacecraft would be the equivalent of developing a car on Earth that can travel twice as fast as any car, with a fuel efficiency of 7,000 miles per gallon. In rocket science, fuel efficiency of a rocket engine is measured by its specific impulse. Specific impulse refers to the units of thrust per the units of propellant consumed over time.

>Variable Specific Impulse Magnetoplasma Rocket

>Gas Dynamic Mirror Fusion Propulsion

>History of fusion for space propulsion

>Magnetic fusion fuels for space applications

>Fusion Reactor Designs for Space Applications

>VISTA ICF space-propulsion design

>FUSION PROPULSION Z-PINCH ENGINE

Click Here To Download Fusion Propulsion Engine Seminar Report and PPT

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Six Stroke Diesel Engine Seminar Report

Six Stroke Engine Seminar Report

The quest for an engine which having the same or more power with higher fuel efficiency than the existing ones has started before many years. As a result of all these researches a new engine concept is formed, which is a six stroke engine. Lot of research works are conducting on this topic nowadays and already six types of six stroke engines were discovered yet. Of these the resent developed three six stroke engines, i.e., Beare head, Bruce crowers and Velozeta’s are undergoing tremendous research works.

During every cycle in a typical four stroke engine, piston moves up and down twice in the chamber, resulting in four total strokes and one of which is the power stroke that provides the torque to move the vehicle. But in a six stroke engine there are six strokes and out of these there are two power strokes. The automotive industry may soon be revolutionized by a new six-stroke design which adds a second power stroke, resulting in much more efficiency with less amount of pollution.In six stroke engine, there are additional two strokes, namely another power and exhaust strokes. The engine works through harnessing wasted heat energy created by the fuel combustion. After the combustion stage water is injected into the super heated cylinder. The water explodes into steam and force the piston down. It in turn helps to cool the engine. That resulted in normal levels of power but using much less fuel. It also has the advantage of not requiring an external cooling system. In order to achieve these benefits, major modifications of conventional internal combustion engine must be done. In this paper the modification of the conventional four stoke internal combustion engine is illustrated to convert it into six stroke engine.

>History of six stroke engines

>Velozeta’s six stroke engine

>Griffin six stroke engine

>Bajulaz six stroke engine

>Crower six stroke engine

>Modifications for Six stroke engine

>Capacity and out put of six stroke engine

>Application of Six stroke engine

Click Here To Download Six Stroke Engine Seminar Report And PPT

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High Speed Battery Charger For Electric Vehicles

High Speed Battery Charging Seminar Report

Internal combustion engine vehicles (ICE) are the widely used type of locomotion around the world.They however possess a major disadvantage that they cause pollution and the available oil reserves are depleting fast. This has led to the reintroduction of Electric vehicles (EV) in the 19th century.One of the major disadvantage of EV are they have a high charging time. This makes the electric vehicles incompetent with ICE vehicles. This paper proposes a method for faster charging of electric vehicles using CUK topology based DC-DC converter. It o ers many advantages over other topologies .They are capable of handling high power, provides high system e ciency due to low component count, maintains power factor almost unity, has fast response suitable for implementing fast charging, inherent inrush current limitation and reduced electromagnetic interference. However their major problem is that as the power output increases the size of the output capacitor increases,making the charger bulkier and improper for everyday use. But the proposed system is found to be better than the previous versions in terms of e fciency, size, weight and charging time. Further improvements in this regard can popularize the electric vehicles and bring about improved and pollution free environment.

Conventional vehicles are driven by internal combustion engine (ICE).They have gained widespread popularity from the time of their introduction. However the popularity of these vehicles has made their number very huge that available oil reserves are depleting rapidly and environmental pollution is increasing. This has forced to nd an alternative to ICE vehicles in the recent times, which has paved the way to Electric Vehicle (EV).Electric vehicles were introduced in the 18th century. However at that time due to the limitations associated with the batteries and better development of internal combustion engines electric vehicles vanished from the scene. Now they have gained popularity again and many research activities are

done worldwide. The major factors which still make them incompetent are high cost of batteries,greater charging time, and lesser distance of run in a single charge. The cost and storage capacity can be improved by improved battery types. However to make them competent with conventional ICE vehicles fast and improved charging methods are needed. In this report a faster charging algorithm,called Pulse charging has been proposed. The algorithm is implemented by using a bridgeless DC-DC converter based on Cuk topology The on-board battery charger based on Cuk DC-DC converter is capable of handling high power,

provides high system e ciency due to low component count, maintains power factor almost unity and has fast response suitable for implementing fast charging, when compared to other topologies like Buck, Boost, and Buck-Boost. It also has low weight, compactness, inherent inrush current limitation and reduced electromagnetic interference suitable for on-board battery chargers.

OVERVIEW OF DC-DC CONVERTERS 

>Buck converter

>Boost converter

>Buck-Boost converter

>CUK converter

>DC-DC Converter in Electric vehicles

BATTERY TYPES AND CHARGING TECHNIQUES

>Battery parameters

>Battery Charging Techniques

>PROPOSED CUK CONVERTER 9

>Circuit diagram

>Principle Of The Proposed Charger And Theoretical Analysis

Click Here To Download Fast Battery Charger Seminar Report

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New Seminar Topics In Mechanical Engineering

Best Seminar Topics For Mechanical Engineering Students:Latest Mechanical B-Tech & M-Tech Seminar Topics

1. 3D Printing and Fast Prototyping 
2. Self Healing and Self Repairing Materials
3. New Generation Nuclear Power Palnts
4. Robotic Car Steering System
5. Manufacturing Of Aluminium Matrix Composite Materials
6. Nuclear Fusion Propulsion Engines
7. NDT For Composite Materials
8. Petrol From Waste Plastics
9. Computational Fluid Dynamics(CFD)
10. Magnetic Refrigeration System
11. Gasoline Direct Injection Engine
12. Ball Piston engine 
13. 4 Wheel Driving System
14. Air Lubrication To Reduce Friction
15. Infrared Thermography(NDT)
16. Cryogenic Refrigeration
17. Hybrid Synergy Drive In Automobiles
18. Hydrogen Fuel Cells
19. Pulse Detonation Engine
20. Microbial Fuel Cells
21. Aerodynamics In Vehicles 
22. Helicopter Flight Theory 
23. Sensentronic Brake Control
24. Ultrasonic Machining 
25.  Six Stroke Diesel Engine
26. Valvetronic Engine Technology
27. Thermoacoustic Refrigerator
28. Free Piston Engine 
29. Orbital/Space Mechanics
30. Atkinson cycle engine
31. Aerospace Propulsion
32. Scuderi Split Cycle Engine 
33. The Hy-Wire Car
34. Advanced composites
35. Smart combustors
36. Biomechatronic Hand 
37. Smart Autoreeling mechanism
38. Cryogenic Grinding
39. Space Robotics 
40. Direct Manufacturing 
41. Fuzzy logic in Aircraft stability
42. Continuously variable transmission (CVT) 
43. Fuel cell powered Go-Karts 
44. Hydro Drive
45. Nano in navy 
46. High angle of attack aerodynamics
47. Fractal Robots 
48. Active roll-over protection system in Automobiles
49. Smart Bombs
50. Nanoscale Armor
51. Frictionless Compressor Technology
52. Roller Pumps
53. Brake booster 
54. Conditional monitoring & fault Diagnosis
55. Self Monitoring
57. Pneumatic systems 
58. Double-wishbone suspension 
59. Bio-degradable polymers
60. Ballistics
61. Dynamic shift program (DSP)
62. Mechanical torque limitors
63. uper Charging 
64. E-gas
65. Ceramic fastners
66. Freeform Manufacturing 
67. Adaptive air suspension 
68. Multi Valve Engine
69. Small Satellites 
70. Pump Noise level reduction methods
71. Thermal Barrier Coatings 
72. Robot driven cars 
73. Polymers castings 
74. System Identification and Adaptive Control 
75. Process Automation Techniques 
76.  Low Gloss ABS system
77. Intelligent Vehicles 
78. DurAtomic Process 
79. Nanorobotics
80. 3D Solar cells
81. Intelligent Compact drives 
82. Wind engineering
83. Intelligent Vehicles and Automated Highways 
84. Rotating Parallel Grippers
85. Aircraft design
86. Magnetic Resonance Imaging 
87. Jelly Filled Telephone Cables
88. Multiple material milling platform
89. Fused Deposition Modelling 
90. Aluminium Alloy Conductors
91. Smart Pnuematics
92. Variable Speed Drives
93. HalBach array
94. Infrared Curing And Convection Curing
95. Rapid Re-Usable Tooling 
96. Magnetic Levitation
97. Digital manufacturing
98. Liquid Engineering 
99. Magnetic Launching
100. Hydroplane
101. Biomechanics
102. MicroTopography 
103. Robots In Radioactive Environments
104. Plastic Welding 
105. Active Front Lighting System 
106. Lean engineering
107. HVDC Transmission 
108. Carbon Nanotubes
109. Modular Workstations 
110. Self-Assembly For Nano And Micro Manufacturing
111. Thread-less Couplings
112. Smart Materials
113. Electromagnetic Valves
114. Supercavitation
115. Hyper Tech Engine
116. Stealth Radar
117. Robotic roller coasters
118. Metamorphic Robots
119. Self Aware Robots
120. Energy saving motors
121. Fuel Cells On Aerospace 
122. Eco-Friendly Surface Treatments
123. Nuclear fuel reprocessing
124. Written-Pole Technology
125. Carbon Foam-Military Applications 
126. Solar Power Satellite
127. Desktop Manufacturing 
128. Jet Powered Boat 
129. Self Healing Spacecrafts
130. Electric Cylinders 
131. Air Casters
132. Fractal Robot
133. High Speed Precise Gear Boxes 
134. Superconducting Rotating Machines
135. Hybrid Electric Vehicles
136. Smart Ammunitions
137. Semi-synthetic cutting fluids
138. Micro engines for microprocessors
139. Heat caps
140. Advances in Gas Turbine 
141. Underwater Welding
142. Corrosion resistant gear box
143. Trenchless Technology 
144. Micro Gravity
145. Variable compression ratio engine
146. Symmetrical All Wheel Drive 
147. Aero Capture
148. Electric power steering units
149. Motors Without Mechanical Transmissions
150. Single Crystal Turbine Aerofoil
151. Dynamic Ride Control (DRC)
152. Inter-Continental Ballistic Missile (ICBM) 
153. Driver information system (DIS) 
154. Floating Solar Power Station
155. Sky Rocket
156. Acoustic parking system (APS)
157. Jetex Engine 
158. Molecular hinges
159. Hybrid Motorcycles 
160. Concept Cars 
161. Aspheric lenses
162. Machine Vision
163. Bioreactors
164. Space Elevator 
165. Micro Batteries
166. Jet Stream windmill
167. Crew Exploration Vechicles 
168. ArcJet Rocket  Mesotechnology
169. Vacuum Braking System
170. Global Positioning System
171. Automotive Infotainment
172. Adaptive Crusie Control
173. Resistojet Rocket
174. Advanced Plastics
175. Micro/Meso-scale Manufacturing 
176. Floating Power Stations
177. Contactless energy transfer system
178. Magneto Abrasive Flow Machining
179. Water Rocket  Handheld Radiation detector
180. Ablative Materials
181. Variable Length Intake Manifold (VLIM)
182. Air- Augmented Rocket
183. Aerospikes
184. Molten oxide electrolysis
185. Advanced Propulsion Methods
186. Advanced Rocket Motors 
187. Ultra Nano Crystallline Diamond
188. Stirling engine
189. Collision warning system
190. Snake Well Drill
191. Rocket Powered Aircraft 
192. Antiroll suspension system
193. Liquid Injection Thrust Vectoring
194. Porous Burner Technology 
195. Fuel Energizer
196. Blended Winged Aircraft
197. Brake Assisting Systems
198. Molecular Engineering
199. Nanomaterial Based Catalyst
200. Benchmarking
201. Regenerative Fuel Cells
202. Bio Diesel
203. Diesel Particulate Filter
204. Mass Rapid Transit system (MRTS) 
205. Laod Sensing Hydraulics
206. Dynamics Of Cutting Viscoelastics Materials
207. Facility Layout Design Using Genetic Algorithm
208. Autonomous Submarines
209. Stereoscopic Projection Systems 
210. Steam Cars
211. Pint Sized Power Plants
212. Virtual Reality Visualisation
213. Re-Entry Of Space Vehicle
214. Magnetic Nanocoposites
215. Steer- By -Wire
216. Air Ship
217. Electromagnetic Bomb
218. Advanced Off-set printing 
219. Active Electrically Controlled Suspension 
220. Babbitt Metal
221. Perpetual Motion  Machines 
222. Risks of Nano Engineered Particles
223. Rotating Scroll Power Compressor
224. ADVANCE IN CAR SAFETY
225. Advanced Cooling Systems
226. Nano Spreader Cooling 
227. Advance Systems In Two Wheelers
228. Self Extinguishing PVC's 
229. Underwater wind mill
230. Electromagnetic Clutches 
231. Air Brithing Engine
232. Microfluidics
233. Hypersonic Space Planes
234. Amphibious Army Surveillance Vehicle
235. Micromixers
236. ELECTRONIC SYSTEM FOR CONTROLLING AIR FUEL RATIO
237. Oil well drilling 
238. Micro scale regenerative Heat Exchanger
239. Microcellular Foam Technology
240. Light weight material Carbon fibre
241. Semi automatic transmission
242. Permanent Magnet Generator
243. Electrostatic precipitator
244. Power Hump
245. Semi solid Casting
246. Six - Stroke Hybrid Engine
247. Flywheel Batteries
248. Reusable Launch Vehicles
249. Six Stroke Engine
250. Miller Cycle Gas Engine
251. Crystaline Silicon Solar Cells 
252. Smart Fluids In Automotive Devices
253. Emission Control In Automobiles
254. Ocean Thermal Energ
255. Smart Tire
256. Hydrogen Car
257. Lean Burn Spark Ignition Engine
258. Supply Chain Management
259. Portable Power
260. Technical Development In Car
261. High Speed Trains
262. Cryogenic Ball Valves
263. The Challenge Of Intelligent Systems
264. Orbital Welding
265. Telematics
266. The Gyro Machine
267. Vertical Landing and takeoff engine
268. The Atomic Battery
269. Thermal Conductivity Of Porous Material
270. Smart combustors
271. Tribology Of IC Engine
272. Turbine Technology In Automobile
273. Hydro Jetting
274. Vehicle Dynamics
275. FADEC - Full Authority Digital Engine Control
276. Recent Advances in Statistical Quality Control
277. Vertical Shaft Brick Kiln (VSBK)
278.  Marine electric propulsion
279. Sustainable Engineering
280. Virtual Manufacturing System
281. Lenoir Cycle
282. Miller Cycle
283. Mechanical Model Of The Finger
284. Stealth Fighter
285. Stratified Charge Engine

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Design And Application Of Belleville Springs

Belleville washers are typically used as springs, or to apply a pre-load or flexible quality to a bolted joint or bearing.Some properties of Belleville washers include: high fatigue life, better space utilization, low creep tendency, high load capacity with a small spring deflection. and possibility for high hysteresis (damping) by stacking several belleville washers on top of each other in the same direction.Belleville springs are also used in a number of landmines and the Swedish Tret-Mi.59. The target (a person or vehicle) exerts pressure on the belleville spring, causing it to exceed a trigger threshold and flip the adjacent firing pin downwards into a stab detonator, firing both it and the surrounding booster charge and main explosive filling.Some makers of bolt-action target rifles use Belleville washer stacks in the bolt instead of a more traditional spring to release the firing pin, as they reduce the time between trigger actuation and firing pin impact on the cartridge.They may also be used as locking devices, but only in applications with low dynamic loads, such as down-tube shifters for bicycles. Belleville washers are seen on Formula One cars, as they provide extremely detailed tuning ability. The World War II-vintage German Junkers Ju 88 aircraft's single strut main gear made primary use of belleville washers as its main shock absorption mechanism. At least one modern aircraft design, the Cirrus SR2x series, uses a Belleville washer setup to damp out nose gear oscillations (or "shimmy").

• Introduction to Belleville Springs
• Design Procedure For Belleville Spring
• Construction of Belleville Springs
• Design Considerations For Belleville  Springs
• Working of Belleville Springs
• Application of Belleville Springs 

Click Here To Download Belleville Spring Seminar 

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