Combustion Reactions
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The document discusses combustion reactions and provides examples. A combustion reaction occurs when a fuel and oxidant react, producing heat or heat and light. The fire triangle represents the three components needed for fire: oxygen, heat, and fuel. Activation energy is the minimum amount of energy needed to start a combustion reaction. A combustion engine uses the combustion of fuel to create motion, such as powering a vehicle. NASCAR engines differ from street car engines in that they have more combustion due to operating at higher speeds. Nitrous oxide can improve engine performance by providing more oxygen during combustion, allowing the engine to produce more power. The document also discusses penalties imposed by NASCAR for cheating that provided aerodynamic advantages.
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Combustion Reaction Power Point
This PowerPoint document discusses combustion reactions and provides examples of how combustion works in engines. It defines combustion as a reaction between a fuel and oxidant that produces heat or heat and light. It explains the fire triangle of oxygen, heat, and fuel and how the cooktop stove exemplifies this. It then discusses combustion engines, how they work by mixing fuel and air to create combustion, and provides an example of cheating in NASCAR to illegally increase engine performance.
Combustion Reaction Power Point
This PowerPoint presentation discusses combustion reactions and provides examples of how combustion works. It defines the fire triangle as requiring oxygen, heat and fuel. Examples of combustion engines are described, such as how a stove works using the fire triangle and how NASCAR engines are optimized for speed. The role of heat and activation energy in starting combustion reactions is explained. An example of cheating in NASCAR by illegally enhancing engine performance is also mentioned.
piston types.pptx
1. The document discusses different types of pistons used in engines, including nonmetallic pistons made of ceramics and composites, Wankel rotors, oval pistons used in a Honda motorcycle engine, and opposed-piston engines.
2. Nonmetallic pistons offer benefits like lower weight and higher strength but were difficult to manufacture. Wankel rotors are the piston analog in rotary engines. Honda experimented with oval pistons but sealing them proved problematic. Opposed-piston engines could improve efficiency by 15% over diesel engines.
3. Pistons compress the fuel-air mixture in cylinders and transfer the force of combustion to the crankshaft to power
Polution less engine
The document discusses the Stirling engine as a pollution-free alternative to traditional internal combustion engines. The Stirling engine uses a sealed chamber where a fixed amount of gas expands and contracts due to changes in temperature from an external heat source, driving pistons and creating useful work. Key advantages are its ability to use any type of fuel without producing exhaust emissions. Due to these characteristics, the Stirling engine has great potential to replace other engine types and help address energy and pollution issues.
stirling cycle report
The document discusses the Stirling engine as a pollution-less alternative to traditional internal combustion engines. It provides background on the Stirling engine, explaining that it uses a sealed gas chamber and external heat source to power pistons through expansion and contraction of the gas, without combustion or exhaust. The key parts and operating cycle of the Stirling engine are described. Advantages include silence, high efficiency, ability to use various fuel sources, and lack of emissions. Recent applications discussed include Stirling thermal motors and four-piston wobble-yoke machines.
Internal combustion engine
A slide on internal combustion engine two stroke and four stroke and their difference. Its just a simple slide, not explained in too much detail. Effects and timings already added.
Content:
-Introduction
-Two stroke engine
-Working of Two Stroke engine
-Advantages and disadvantages of two stroke engine
-Four stroke engine
-Working of four stroke engine
Advantages and disadvantages of Four Stroke Engine
-Which is better
-Conclusion
Green engine technology
This document discusses green engine technology, which aims to modify internal combustion engines to increase efficiency and reduce emissions. It provides background on the need to develop green engines due to rising energy consumption and environmental issues. The key features of green engines are described, including direct fuel injection, variable compression ratios, and optimized combustion. The construction and 6-phase working principle of a prototype green engine are outlined, involving air intake, compression, mixing, combustion, power, and exhaust phases. Benefits over conventional engines cited are higher efficiency, lower emissions and fuel usage, and improved performance. Potential applications include automobiles, aircraft, generators, and more.
The green engine
Green engine is really evolutionary concept. It is the internal combustion engine with some or major modifications in its parts and design.Green engine have rotary type construction. Central shaft is provided with the four vanes around it. Green engine can work with large variety of fuels which makes it good choice for using nonconventional fuels like biodiesel.
Combustion Reactions Power Point
The document discusses combustion reactions and engines. It defines combustion reactions as exothermic chemical reactions that produce heat. It explains that combustion engines combine air and fuel to produce energy to power movement. The fire triangle represents the three elements (heat, fuel, oxygen) needed for a fire. NASCAR engines differ from street engines through custom blocks and heads that allow higher speeds. Nitrous oxide helps engines by splitting into oxygen and nitrogen when heated to boost performance. The document gives the example of Smokey Yunick illegally using nitrous oxide in NASCAR races until it was banned.
6 stroke petrol engine
This document discusses the six-stroke engine, including its types and working. The six-stroke engine incorporates an additional stroke to the conventional four-stroke engine, introducing a second power stroke. There are three main types - the Crower, Beare Head, and Bajulaz engines. The Crower design injects water after the exhaust stroke to produce steam for an additional power stroke, while reducing fuel consumption by 40%. The Bajulaz engine provides two expansions in six strokes, dramatically reducing pollution while using multiple fuel types, and maintains costs comparable to a four-stroke engine. Six-stroke engines could potentially reduce fuel consumption and pollution levels without significant performance impacts.
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Fossil fuels
Fossil fuels such as coal, oil, and natural gas are formed from the remains of ancient plants and animals. Coal is formed from decaying ferns and trees in swamps, while oil and natural gas form from decaying plankton on lake and ocean floors. These fossil fuels are non-renewable and are important sources of energy, providing about 90% of the world's current energy needs. However, their extraction and use also carries environmental risks such as oil spills.
Simple machines
The document discusses the main types of simple machines: wedge, wheel and axle, lever, inclined plane, screw, pulley, and compound machines. It provides examples for each machine, such as knives and scissors for wedges, cars and wheelbarrows for wheel and axles, brooms and screwdrivers for levers, stairs and sidewalk ramps for inclined planes, jar lids and light bulbs for screws, window blinds and garage doors for pulleys, and bikes and garden hoes for compound machines that combine more than one simple machine.
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Combustion Reactions
- 1. Combustion Reactions By: Glizyl Luna
- 2. What are the different types of chemical reactions? ● Combustion ● Synthesis ● Decomposition ● Single displacement ● Double displacement ● Acid-Base
- 3. What is a combustion reaction? A combustion reaction takes place when a fuel and an oxidant react, producing heat or heat and light.
- 4. What is the fire triangle? ● The fire triangle what produces the fire which is first oxygen, then heat, then the fuel and the chemical, exothermic reaction that is the fire.
- 5. What is activation energy? ● It is the amount of energy needed to start the reaction.
- 6. Why is heat/energy a necessary part of the triangle? ● Without sufficient heat a fire cannot begin. ● Without the three things: heat, oxygen and fuel, the fire won't begin.
- 7. How is the cook top of you stove a real life example of a fire triangle? ● The stove use oxygen, heat, and fuel to cook food on the stove.
- 8. What is a combustion engine? ● It is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. ● The expansion of the high temperature and pressure gases, produced by the combustion, applies force to a moveable component of the engine such as pistons or turbine blades by moving it over a distance.
- 9. How does a combustion engine work? ● It is a motion from gasoline is to burn the gasoline inside an engine.
- 10. How are NASCAR engines different from street cars? ● The NASCAR engines have more combustion because they go at higher speeds. ● The street cars have a smaller engine because they don't need as much fuel as a NASCAR because their not going at high speeds.
- 11. How does nitrous oxide help engines perform better? ● When you heat nitrous oxide to about 570 degrees F, it splits into oxygen and nitrogen. So the injection of nitrous oxide into an engine means that more oxygen is available during combustion. ● More oxygen, more fuel, allowing the engine to produce more power.
- 12. Documented example of cheating in NASCAR After the race the roof of Jimmie Johnson's car was too low. That reduced aerodynamic drag and lower center of gravity is an obvious performance benefit. Behind him second place finisher, and teammate, Kyle Busch's car was found to have quarter- panel heights that were too high, again and aerodynamic advantage. When the penalties were handed down on Tuesday following the race NASCAR did lay out some stiff penalties, but not stiff enough. Jimmie Johnson lost 25 driver points, 25 car owner points and a $35,000 fine. His crew chief was suspended for two races. Kyle Busch face a similar penalty, 25 points for both driver and car owner, tow race suspension for his crew chief and a $25,000 fine. Effectively Jimmie Johnson was assigned third place points and allowed to keep the lion's share of the money.