MIDTERMS

100問 • 1年前

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It is the rate at which the energy is used. It is the power divided by time.

Power

It consist of a mass of molecules that produces power either heat, mechanical, electrical, chemical, and combinations

Energy

It is a study that deals with the basic principles of energy sources and power conversion and utilization in agriculture field and farmstead operations

Agricultural power and energy sources

This is an energy stored in a certain chemicals or materials that can be released by chemical reactions

Chemical energy

It is an energy associated with random molecular motions when any medium energy is usually related to the increase in decrease in the temperature of a substance

Heat energy

It is the form of mechanical energy which has to do with the mass in motion. For example, the wind harness through the wind rotors, moving water and turbine.

Kinetic energy

It is a form of energy associated with deposition of the force field

Potential energy

It is the form of energy generated by friction chemical change having magnetic chemical and radiant effect

Electrical energy

What are the energy conversion systems?

Animal power system, Biogas system, Biomass power generation system, Human power system, Electrical battery system, Internal combustion engine system, Wind turbine system, Electrical generator system, Biomass thermal production system, Solar photovoltaic system, Solar thermal system, Hydro power system

It is the amount of heat energy energy required the race, the temperature of 1 pound of water, 1°F

British thermal unit

It is the amount of energy required to raise the temperature of 1 g of water by 1°C

Calorie

It is a force impound acting on the distance of 1 foot

Foot pound

It is the rate of using energy it is should express in a unit of horsepowers what’s third Stark

Power

This are used in agricultural agents and are made from crude oil

Fuel

Are composed of hydrogen and carbon in our cold hydrocarbons

Crude oil

Each hydrocarbon has blank and boiling point

Specific, gravity, and boiling point

Site one of the sources of fuel

Biomass fuel and fossil fuel

What are the classifications of fuel?

Solid fuel, Liquid fuel, Gaseous Fuel

It is use as engine fuel, but the fuel supply system for this engines differs from the other gasoline engine

Liquefied, petroleum, gas, or LPG

LPG consist of what

Propane and butane

It is directly as it comes from the oil well, without being subjected to any complex refining or purifying processes, it consists largely of methane and other hydrocarbon gases

Liquefied natural gas

It is a product of distillation of crude oil

Gasoline

This is a pacification of gasoline it was in which it is manufactured from the gas, that issues from oil well, or is obtained in the distillation of the crude oil

Natural gas gasoline

Is produced by distillation of crude oil

Straight run, gasoline or raw gasoline

It is manufactured from heavier distillation fraction, particularly gas oil

Cracked gasoline

It consists of all types of natural raw or cracked gasoline or mixed together in the refining process

Blended gasoline

What are the properties of gasoline and engine performance?

Volatility, Antiknock Property, Corrosion, Existent gum, Gravity

It is a property of gasoline in which It’s in dexterous detonation during combustion so the higher the Octane number is necessary for high compression, ratio and high-performance engine

Anti-knock property

It is an additive used to raise octane number, and is the most popular knock suppressor

Tetraethylead

There are compound that are corrosive to metals

Sulfur compound

If you will have a tendency to form vicious liquids, or solid, cold blank

Gum

It can cause antique valve sticking, and heavy intake, manifold deposits

Existent gum

The gravity of fuel is usually expressed in blank

API or the American petroleum Institute degrees

It is the heavier product of the distillation of crude oil and gasoline

Kerosene

What is the density of kerosene?

0.78–0.84 g/cm³

What is the acting number of kerosene?

30 to 40

Spark, ignition, engine can start by only kerosene fuel, because the initial point of kerosene is higher than gasoline

False

It is used as a start of fuel for Kerosene engine

Gasoline

It includes the heaviest oil used in internal combustion engine

Diesel

What is the density of diesel?

0.82–0.89 g/ cc

Where does the setting number takes place in an engine?

Ignition log burning injection and burning after injection

It results in accumulation of unburned view, which, when subjected to high-pressure and temperature, may detonate giving the rice to the diesel knock

Excessive ignition Lag

True or False In the diesel engine, the desirable value of cetane number is not necessary to the number that is necessary, obtain a good ignition of fuel

False

True or False Low cetane in fuel permits and engine to be started at lower temperature

False

True or false Relative high viscosity is important for gasoline fuel because it must furnish the lubrication for the injection pump and injector

False

The lowest temperature at which the fuel system is to flow is known as blank

pour point

How do wind turbine system works its energy

Wind, energy to mechanical energy to electrical energy

How does biogas system works its energy?

From animal waste energy, it will convert it into chemical energy and will have an output of thermal energy

Internal combustion engine system

Chemical energy to heat, energy energy to mechanical energy

It is the heat and engine that burns fuel air inside a combustion chamber located within the engine proper

Internal combustion engine

It is a machine used to power tractors, combine harvesters, and other self propelled equipment

Internal combustion engines

These are machine that uses heat energy from the fuel to generate mechanical power for any usual purposes, such as driving machines, and for electrical power generations

Heat engines

What are the classifications of engines?

Internal combustion engine and external combustion engine

Explain internal combustion engine

It is a combustion engine where it burns, fuel and air inside the cylinder of the engine

What is a external combustion engine?

Edison engine, where it burns, fuel and air outside the cylinder

What are the Classifications of internal combustion engine?

Piston or reciprocating, Rotary, Gasturbine, Jet engine, Rocket engine

What are the classification of external combustion engine?

Steam engine, Stirling engine

What is the classifications of ICE according to the ignition of fuel?

Spark, ignition engine, Compression ignition engine

It produces power in one revolution of the crankshaft

Two strokes cycle engine

It produces power into revolution of the crankshaft

Four strokes cycle engine

Explains spark, ignition engine

Spark, ignition engine is an engine or a part of ICE, where in it, it uses spark to ignite the fuel. Typically it uses gasoline as fuel.

Explain compression ignition engine

CING compression ignition engine is an engine where in it uses high compression to increase the temperature of the air in the chamber and the injected fuel without spark. Typically it uses diesel as its fuel.

What are the Classification of ICE according to the drive shaft position?

Horizontal drive shaft, Vertical shaft

It says shaft, where it is in horizontal position while the piston is upward position

Horizontal Drive shaft

Explain vertical drive shaft

It is a driveshaft that is in the vertical position, while the piston is in the side ward position

What are the basic components of ICE

Cylinder head, Cylinder block, Valves, Piston, Crankshaft, Piston rings, Piston pin, Flywheel, Crankcase

It houses the valves, spark, plug, or fuel injector and serves a cover of the cylinder block

Cylinder head

It encloses the piston and confines the expanding gases

Cylinder block

It allows the flow of fuel gases or air

Valves

It is a hallow cylinder with closed top upon which of the expanded gases act and transmit force to the crankshaft

Piston

It receives power from the piston and transmit it to the other parts to do useful work

Crankshaft

It retain compression reduce cylinder wall contact and thereby reducing friction losses and wear

Piston rings

It joins the connecting rod and the piston

Piston pin

It is the energy storage device of the engine to keep it at uniform speed when the crankshaft is not receiving power to the piston

Flywheel

It encloses and supports the crankshaft and serves as Reservoir for the lubricating oil

Crank case

What are the engine subsystems?

Ignition system, Fuel system, Starting system, Cooling system, Exhaust system, Transmission system

It is responsible for supplying heat for combustion of fuel

Ignition system

It is responsible for supplying fuel in the combustion chamber

Fuel system

Responsible for starting on the engine

Starting system

It responsible to keep the temperature of the engine lower

Cooling system

It is responsible for transferring the power generated from the combustion chamber to the driveshaft

Transmission system

It is responsible to discharge combustible gases from the combustion chamber

Exhaust system

It is also also known as piston rings

Compression and oil rings

It is the size of the opening of the cylinder that are almost equal to the meter of the piston plus the rings

Bore

It is the distance traveled by a piston from the TDC to the BDC

Stroke

It is the uppermost position of the piston during the compression and Exhaust stroke stroke

Top dead center or TDC

It is the lowest most position of the piston during the intake and power stroke

Bottom that center or BDC

It is a series of event occurring one after the other, in a definite order, and repeats the event, after the last one has occurred

Cycle

The sequence of piston power, and multiple cylinder, and delivering the power through

Firing order

It is the power generated at the combustion chamber

Indicated horsepower

It is the power available at the driveshaft, or the crankshaft of an engine

Brake horsepower

It is the power as specified by the manufacturers

Rated horsepower

It is the amount of fuel consumed by brake horsepower of the engine

Specific fuel consumption

State the cycle of events

Intake, stroke, Compression stroke, Power stroke, exhaust stroke

What will happen in the intake stroke?

During intake, stroke, fuel and air or air alone is sucked in the combustion chamber, while the piston moves in downward direction

What will happen in the compression stroke?

And this stroke, fuel and air or air, is compressed by the piston as it moves in upward direction

What will happen during power stroke?

During power, stroke, fuel and air is ignited to produce or generate power at the downward movement of the piston and transmitted it into the crankshaft of the engine

What will happen during the exhaust stroke?

Excess stroke is where the burn fuel and gases is discharged from the combustion chamber

A fuel feeding method for most diesel and newer models of gasoline engines were high-pressure, electric electric pump, mixes wisely, measured amount of filtered fuel and air

Fuel injection

100

This uses heat from exhaust gases to power a turbine that forces additional air and fuel into cylinders when the engine is running, a high speed, providing a power boost up up to 30%

Turbo chargers

Materials

ユーザ名非公開 · 100問 · 2年前

Materials