Efficiency Increasing System

Society is driven by the thought of improving every existing invention to make it bigger, smaller, more cost effective, or simply better. The internal combustion engine has been used in transportation for everyone who lives in a civilized area; whether it is a motorcycle, car, bus, airplane, etc. The most important advances in technology for these engines involve efficiency. Gas mileage, performance, and displacement are key concerns for all engineers of internal combustion engines. With the invention of the turbocharger all of these factors can be improved. The inventor, progression, impact, and current adaptation of the turbocharger are very important in understanding this engineering innovation.

They design high-performance exhaust headers to increase engine efficiency. This is accomplished by allowing the free flowing exit of exhaust gases after combustion is complete. In

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Combustion, also known as rapid burning, is the basic chemical process of releasing energy from any fuel and air mixture. In an internal combustion engine, the ignition and combustion of the fuel occurs within each cylinder of the engine block. The engine then partially converts the energy from the combustion to push the piston down. The engine consists of a fixed cylinder and a moving piston (Springfield.mntm.org, 2017). The expanding combustion gases push the piston, which in turn rotates the crankshaft. Ultimately, through a system of gears in the powertrain, this motion drives the vehicle’s wheels

I’m interested on this topic because, I think that the four stroke combustion cycle in Internal Combustion Engines (ICE) revolutionized the way the Man think and Moves. Internal Combustion Engines are also significantly more efficient than the well-known steam engine. Today it has better power than electric batteries and motors, and offers similar overall efficiency. Small, lightweight ICE made personal transportation possible. It transformed how we built cities and did business. Engines are so important for the advancement on any society, nowadays without engines it will be much harder for man to do what it look simple and ordinary in today’s world. More than importance of this topic on my career or profession, is the importance on the topic in our daily live, this paper explains how with the help of physics all grate scientists revolutionized our modern world of engines.

Heavy-duty lean burn gas engines admit as much as 75% more air than theoretically needed for complete combustion into the combustion chambers. The extremely weak air-fuel mixtures lead to lower combustion temperatures and therefore lower NOx formation. While lean-burn gas engines offer higher theoretical thermal efficiencies, transient response and performance may be compromised in certain situations. Lean burn gas engines are almost always turbocharged, resulting high power and torque figures not achieveable with stoichiometric engines due to high combustion temperatures.

The seminar focuses on the study of the effect of compressed natural gas (CNG) and diesel fuel injection pressures, together with the amount of fuel injected during the pilot injection for different operating conditions, on combustion development, engine emission levels and fuel consumption.

Other than receiving energy from the electric grid, generating energy from a combustion engine is the most efficient method of powering a facility. The average engine efficiency is 80% which is the main motive for examining an engine as an energy generation method. Combustion engines operate by mixing the fuel with air after which the mixture is compressed through the intake process. As the mixture is being compressed, a spark ignites and energy is generated.

operation is that of igniting the charge by causing a spark to jump the gap

The problem with modern combustion engines is that they are very inefficient. Efficiency is defined as the ratio between the amount of input energy against the amount of useful output energy: in this instance, chemical potential energy in the fuel is converted to kinetic energy (initially, driving the pistons upward) which will ultimately go towards giving the car motion. However, only about 25-30% of the energy released from the petrol will go towards actual movement of the vehicle.

With the growing number of vehicle, energy shortage and environmental pollution have become increasingly prominent. Researches on alternative fuels and advanced engine technology have been conducted intensively in recent year to reduce vehicle emission and achieve high engine efficiency. The Homogeneous Charge Compression Ignition (HCCI) combustion engine which operates on lean mixtures and has a gasoline engine-like mixture forming process and diesel engine-like igniting method receives a growing concern.

Usage of diesel engine in automobiles is increasing worldwide because of its high fuel efficiency. As the usage increases, the emissions from the exhaust gases also increases which affects the atmosphere, thereby causing environmental issues such as global warming, smog and even acid rain. These emissions are mainly due to non-stoichiometric combustion, dissociation of Nitrogen and impurities in the fuel and air mixture. Major emissions include Oxides of Nitrogen, Oxides of Sulphur, unburnt Hydrocarbons, oxides of carbon and other carbon particles or soot. Significant measures are taken by the automotive industries for several years to reduces the intensity of these exhaust gases. There are two ways of reducing these exhaust gases are

In this project we focus on the various factors that affect the powertrain performance related to thermal management. Heating and cooling of the engine to improve efficiency is the main objective of this project. In this project we have considered the four main characteristics that

Due to the increasing pollution, modern vehicles must meet the increasing emission regulation on the pollutants such as soot, NOx, unburned hydrocarbons, particulate matter and carbon monoxides. Initially, spark ignition engines have been used which has a flame propagating mechanism and the combustion can be controlled by varying ignition timing. The emissions of soot are lower when compared with the diesel engines as the mixture used for the combustion is pre-mixed. At partial load conditions the SI engine has low efficiency which is a major drawback. In the compression ignition (CI) engines the compression ratio is higher than the SI engines. In CI engines the rate of combustion is limited as a part of the fuel mixes well with air and burns fast and for the other

This means that the oil is changed at regular intervals and the tires are rotated to ensure that the vehicle uses less energy to run. The emissions from the exhaust system is minimal since the engine is new.