21-03-2011, 07:11 PM
i need pdf file, for six stroke engine
21-03-2011, 07:11 PM
i need pdf file, for six stroke engine
06-04-2011, 04:15 PM
need full report on 6 stroke engine with pictures n animations with ppt for this topic.
16-04-2011, 01:19 PM
please sent me full details for this project
12-05-2011, 04:48 PM
munnu final touch up.docx (Size: 743.59 KB / Downloads: 194) Introduction: The term six stroke engine describes two different approaches in the internal combustion engine developed since the 1990s to improve its energy and environmental efficiency Some designs capture the waste heat from the four stroke Otto cycle or Diesel cycle and use it to power an additional power and exhaust stroke of the piston. Designs either use steam or air as the working fluid for the additional power stroke. As well as extracting power, the additional stroke cools the engine and removes the need for a cooling system making the engine lighter and giving 40% increased efficiency over the Otto Cycle or Diesel Cycle. The pistons in a six stroke engine go up and down six times for each injection of fuel. These six stroke engines have 2 power strokes, one fuel, one steam or air. Consider the following: A 10% efficiency improvement in vehicle performance would save over $10 billion and reduce emissions of carbon dioxide by 140 million tons per year. A 20% efficiency improvement could reduce foreign oil used today by 1/3. Consumers would save billions of dollars in fuel cost. Reduction in emissions would be in the hundreds of millions of tons per year, and dependency on foreign oil would be drastically reduced. Working of a basic DIESEL engine: The cycle starts with the intake stroke, which begins when the piston is near top dead center. The intake valve is opened, creating a passage from the exterior of the engine (generally through an air filter assembly), through the intake port in the cylinder head and into the cylinder itself. As the piston moves toward bottom dead center, a partial vacuum develops, causing air to enter the cylinder. In the case of a turbocharged engine, the air is rammed into the cylinder at higher than atmospheric pressure. As the piston passes through bottom dead center, the intake valve closes, sealing the cylinder. The compression stroke begins as the piston passes through bottom dead center and starts upward. Compression will continue until the piston approaches top dead center. The energy required for the compression stroke comes from the momentum of a flywheel on the crankshaft as well as (in multi-cylinder engines) other pistons in their power stroke. The power stroke occurs as the piston reaches top dead center at the end of the compression stroke. At this time, fuel injection occurs, resulting in combustion and the production of useful work. The final stroke is the exhaust stroke, which begins as the piston approaches bottom dead center following ignition. The exhaust valve in the cylinder head is opened and as the piston starts upward, the spent combustion gases are forced out of the cylinder. Near top dead center the intake valve will start to open before the exhaust valve is fully closed, a condition referred to as valve overlap. Overlap produces a flow of cooling intake air over the exhaust valve, prolonging its life. Following the completion of the exhaust stroke the cycle will begin anew Study about the basic engine Our AEROZETA is made out of a working four stroke diesel engine. Features of our basic engine: These are the features of the engine from which the AEROZETA has been built. Displacement 1000cc No. of cylinders 3 Type of fuel used Diesel Type of ignition system compression ignition Type of injection direct injection Placement of camshaft overhead camshaft Firing order 1-2-3 Drive of crank and cam Belt driven No. of teeth on the crank gear 20 No. of teeth on the cam gear 40 Study about the CAMSHAFT of the basic engine: Camshaft in an engine is essential to operate the valves of the engine. When the lobe of the cam hits the tappet of the valve, it is forced downwards through the valve guide present in the head of the engine. The most important elements of the cam shaft are the timing gear and the construction and placement of lobes. Construction of the timing gear: The timing gear is made based on the requirement of the necessary gear ratio between the crank shaft and the cam shaft. For a typical four stroke engine the velocity ratio is 1:2 as the rotation of the cam shaft should be half the time of rotation of the crank shaft. Study of Design of the cam profile of the basic 4 stroke engine: According to the study made by our team members, There is a raise of 10mm over 43º degrees of the cam rotation. Dwell at the max height up to 3º- 4º degrees of the cam rotation. There is a fall after the dwell up to the cam’s min radius, which ends when the cam completes 90º degrees of rotation.
19-08-2011, 06:13 PM
I HAVE 2 MAKE SEMINAR TOPIC ON SIX STROK ENGINE PLZ HELP ME OUT
20-08-2011, 09:57 AM
To get more information about the topic "six stroke engine " please refer the link below
https://seminarproject.net/Thread-six-st...9#pid55069 https://seminarproject.net/Thread-six-stroke-engine https://seminarproject.net/Thread-six-st...ine?page=2 https://seminarproject.net/Thread-six-st...ine?page=3
25-08-2011, 04:06 PM
i need a ful report along with ppt. kindly forward me.
26-08-2011, 10:20 AM
To get more information about the topic "six stroke engine " please refer the link below
https://seminarproject.net/Thread-six-st...9#pid55069 https://seminarproject.net/Thread-six-stroke-engine https://seminarproject.net/Thread-six-st...ine?page=2 https://seminarproject.net/Thread-six-st...ine?page=3
18-04-2012, 01:04 PM
six stroke engine
SUDHEER.doc (Size: 1.33 MB / Downloads: 93) INTRODUCTION The six-stroke engine is a type of internal combustion engine based on the four-stroke engine, but with additional complexity intended to make it more efficient and reduce emissions. Two types of six-stroke engine have been developed since the 1990s: In the first approach, the engine captures the heat lost from the four-stroke Otto cycle or Diesel cycle and uses it to power an additional power and exhaust stroke of the piston in the same cylinder. Designs use either steam or air as the working fluid for the additional power stroke.[1] The pistons in this type of six-stroke engine go up and down three times for each injection of fuel. There are two power strokes: one with fuel, the other with steam or air. The currently notable designs in this class are the Crower six-stroke engine, invented by Bruce Crower of the U.S. ; the Bajulaz engine by the Bajulaz S.A. company of Switzerland; and the Velozeta Six-stroke engine built by the College of Engineering, at Trivandrum in India. The second approach to the six-stroke engine uses a second opposed piston in each cylinder that moves at half the cyclical rate of the main piston, thus giving six piston movements per cycle. Functionally, the second piston replaces the valve mechanism of a conventional engine but also increases the compression ratio. The currently notable designs in this class include two designs developed independently: the Beare Head engine, invented by Australian Malcolm Beare, and the German Charge pump, invented by Helmut Kottmann. IC Engine: I.C.Engine is a device which uses chemical energy of fuel & it is transformed into thermal energy by combustion to produce mechanical work. Classification of I.C.Engine :- 1) According type of fuel used a)Petrol b)Diesel 2) According to type of ignition a)Spark ignition b) Compression ignition 3) According to number of cylinder a)Single cylinder b) Multi cylinder Engine 4) According to arrangement of cylinder a)Vertical engine 2) Horizontal engine 3) Radial engine 5) According to number of stroke a) 2 stroke engine b) 4 stroke engine Two Stroke Engine: It is called 2 stroke engine because of one revolution of crank OR 2 stroke of piston.It Consists of piston ,crank, connecting rod,inlet & outlet Port’s & etc.. The Major disadvantage of 2 stroke engine is that both inlet & outlet valve opens simultaneously ,so that burnt fuel , fresh air & fuel mixture burnt simultaneously therefore fresh air & fuel may be exhausted without doing any work & also this may leads to high pollution & this what reason why “GOVT OF INDIA” Banned manufacturing of 2 stroke engine. Two Stroke Engine The two stroke engine employs both the crankcase and the cylinder to achieve all the elements of the Otto cycle in only two strokes of the piston. Intake The fuel/air mixture is first drawn into the crankcase by the vacuum that is created during the upward stroke of the piston. The illustrated engine features a poppet intake valve; however, many engines use a rotary value incorporated into the crankshaft.
25-04-2012, 12:27 PM
six stroke engine
TECHNICALPAPERON.doc (Size: 708 KB / Downloads: 64) INTRODUCTION: The majority of the actual internal combustion engines, operating on different cycles have one common feature, combustion occurring in the cylinder after each compression, resulting in gas expansion that acts directly on the piston (work) and limited to 180 degrees of crankshaft angle. ANALYSIS OF SIX STROKE ENGINE: Six-stroke engine is mainly due to the radical hybridization of two- and four-stroke technology. The six-stroke engine is supplemented with two chambers, which allow parallel function and results a full eight-event cycle: two four-event-each cycles, an external combustion cycle and an internal combustion cycle. In the internal combustion there is direct contact between air and the working fluid, whereas there is no direct contact between air and the working fluid in the external combustion process. Those events that affect the motion of the crankshaft are called dynamic events and those, which do not effect are called static events. Internal combustion cycle Direct contact between the air and the heating source. I1. (Event 5) Re-compression of pure heated air in the combustion chamber (dynamic event) I2. (Event 6) Fuel injection and combustion in closed combustion chamber, without direct action on the crankshaft (static event). I3. (Event 7) Combustion gases expanding in the cylinder, work (dynamic event). I4. (Event 8) Combustion gases exhaust (dynamic event). CONSTRUCTIONAL DETAILS: The sketches shows the cylinder head equipped with both chambers and four valves of which two are conventional (intake and exhaust). The two others are made of heavy-duty heat-resisting material. During the combustion and the air heating processes, the valves could open under the pressure within the chambers. To avoid this, a piston is installed on both valve shafts which compensate this pressure. Being a six-stroke cycle, the camshaft speed in one third of the crankshaft speed. ADVANTAGES OF SIX STROKE OVER FOUR STROKE ENGINES: The six stroke is thermodynamically more efficient because the change in volume of the power stroke is greater than the intake stroke, the compression stroke and the Six stroke engine is fundamentally superior to the four stroke because the head is no longer parasitic but is a net contributor to – and an integral part of – the power generation within exhaust stroke. The compression ration can be increased because of the absent of hot spots and the rate of change in volume during the critical combustion period is less than in a Four stroke. CONCLUSION: There is, at this day, no wonder solution for the replacement of the internal combustion engine. Only improvements of the current technology can help it progress within reasonable time and financial limits. The six-stroke engine fits perfectly into this view. It’s adoption by the automobile industry would have a tremendous impact on the environment and world economy, assuming up to 40% reduction in fuel consumption and 60% to 90% in polluting emissions, depending on the type of the fuel being used.
23-07-2012, 10:55 PM
my nane is jeeva . i want names for strokes in six stroke engine
24-07-2012, 09:48 AM
To get more information about the topic "six stroke engine " please refer the link below
https://seminarproject.net/Thread-six-st...9#pid55069 https://seminarproject.net/Thread-six-stroke-engine https://seminarproject.net/Thread-six-st...ine?page=2 https://seminarproject.net/Thread-six-st...ine?page=3
05-11-2012, 11:00 AM
to get information about the topic "six-stroke diesel engine" full report ppt and related topic refer the link bellow
https://seminarproject.net/Thread-six-st...sel-engine https://seminarproject.net/Thread-six-stroke-engine https://seminarproject.net/Thread-six-st...ine?page=9 https://seminarproject.net/Thread-six-st...ine?page=4 https://seminarproject.net/Thread-six-st...ine?page=7 https://seminarproject.net/Thread-six-st...ine?page=2
07-06-2013, 09:32 PM
Please help me to make a seminar on topic Six Stroke Engine
24-08-2013, 06:45 AM
what is the function of reed valve how it works
|
|