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Automotive fuel Educational System - Tips Technical Auto repair shop Mesa auto
Fuel System
Most cars in production today depend on gasoline or diesel. Many problems arise from using gasoline and diesel. Once burned, are gone forever. That is the reality of fossil fuels in today's society driven. Many simple things can be done to improve gas mileage and efficiency today's vehicles. This section discusses the properties of fuel, automotive fuel components, and ways to increase fuel efficiency.
Tech Tip
Looking ahead
Due to limited fossil fuel resources, companies oil companies and automobile manufacturers are seeking alternative fuels to power vehicles. One type of fuel used in vehicles today is specially designed E-85. E-85 fuel is 85% ethanol (grain) based. Another hydrogen fuel is promising. Hydrogen fuel cells are devices that convert hydrogen and oxygen into water. During this process the electricity produced to propel the vehicle. With the water only as a byproduct, hydrogen fuel cell vehicles produce no harmful emissions.
Properties gas
Gasoline and diesel, as several other products (eg cosmetics, paints, soaps, nylon, and asphalt), from of crude oil. Crude oil is a nonrenewable energy resource. Crude oil, a fossil fuel, is an energy resource that is not replenished in time. Examples of non-renewable energy resources are coal, oil and natural gas. Under the current production and consumption rates, oil experts project to last 50-100 years. crude oil goes through a distillation process of a refinery to make gasoline. Gasoline is a mixture of hydrocarbons (hydrogen and carbon) and is used primarily for internal combustion engines. Gasoline is the fuel that powers most cars today. Motors gasoline combustion engines are considered. The fuel must be ignited to burn in the engine. gas properties to be discussed are:
Octane
Hits
Additives
Octane
When pulling up to a gas pump, usually have a couple of options. The pumps are usually called regular, intermediate, or premium. What does this mean? For the most part, relates to the octane in gasoline. Octane is defined as resistance to burning. The higher the octane number, the more the fuel resists burning. The more he resists the burning of fuel, combustion is more complete when the fuel ignites. In general, higher compression engines need higher octane fuel. Common numbers are regular 87 octane mid-grade (Or more), 89 and bonus 93. The octane requirement depends on engine design, vehicle height is conducted and how individual units. Most of cars require a minimum of 87 octane, but always consult your owner's manual.
Issue Guide
Engine lacks power (inactive)
Clogged fuel filter
The impurities in the fuel
fuel octane too under
Hits
Many people have experienced an engine knocking or pinging during acceleration. The sound is created when fuel ignites prematurely. antiknock characteristics are directly related to octane. The higher the octane the more it resists to call. It need a higher temperature and more compression to ignite a fuel with higher octane.
Additives
In many icing over the country, such as isopropyl alcohol are added to gasoline to prevent gas lines from freezing. corrosion inhibitors are added to help resist corrosion volatile metals. Detergents are added to clean the fuel system. Many cities have ordered the use of ethanol as an additive. Often up to 10% of the gasoline is ethanol. Ethanol is a grain alcohol, usually from corn or other starch-rich grains. When gasoline and ethanol blends are called gasohol. Gasohol burns cleaner, emitting fewer pollutants and greenhouse gases, 100% gasoline.
Diesel Properties
Some people think that diesel fuel is used only in semi-tractors or heavy machinery. However, there are many diesel cars and light trucks on the highway today. Diesel fuel is also a product of the distillation (separation and vaporization) crude oil. At different temperatures distillation process are set out various products. Diesel fuel actually has more energy per unit volume than gasoline. The engines are called diesel engines compression ignition. They do not need spark plugs to ignite the fuel. The high compression (about 20:01 compared to 9:1 in gasoline engines) and heat in the combustion chamber ignites the fuel. Diesel engines have glow plugs to heat the combustion chamber just before the game. Diesel properties to be discussed are the cetane number and grades of diesel.
Cetane Number
The cetane number is very similar to octane in gasoline. The cetane number fuel refers to how well it ignites. The higher the cetane number, the better the ignition quality of fuel. Cetane Number 40-50 are the most common.
Grade Diesel
There are two types of diesel used in cars and trucks: Number 1 and Number 2. The American Society for Testing Materials (ASTM) classifies these two degrees. In the process of distillation, No. 1 diesel fuel has a boiling point lower than No. 2 and therefore more likely to be vaporized No. 2. Therefore, No. 1 diesel is commonly used when the outside ambient temperature is abnormally low. In climates of northern United States often have many gas stations No. 1 in the winter, a mixture of No. 1 and No. 2 in the fall and spring, and No. 2 in the summer. N No. 2 diesel fuel has a tendency to "gel" seriously cold weather.
Purpose of the fuel system
Fuel is added to the gas tank of a gas station. The fuel (chemical energy) is stored in the gas tank for future use. The fuel is pumped in carburetor or injection system. The carburetor or fuel injection system is mixed with air. The best mix of air / fuel ratio is 14.7 parts of air 1 part of fuel. The mixture is carried into the combustion chamber and burns. The aim of the fuel system is to store, transfer, and then mixing fuel with air.
The fuel system parts
The fuel system parts that will be discussed are:
Fuel Cap
The fuel (gas) keeps the lid of the fuel spill, release the vacuum that is created as fuel is introduced into the engine, pressure as reported that gasoline expands and contracts with temperature changes, and prevents foreign objects from entering the fuel tank.
Fuel Lines
Fuel lines, made of steel or rubber, carrying fuel to the carburetor or fuel injectors
Fuel Tank
The fuel (gas) tank, made of steel or plastic, the fuel stored for later use.
Fuel Pump (Electric) (Manual)
The fuel pump, either mechanical or electrical motor fuel supplies. Mechanical fuel pumps normally found in motor vehicles normally used type carburetor. electric fuel pumps are usually located in the fuel tank normally used injected fuel-efficient vehicles.
Carburetor or fuel injection system
Cars have either a carburetor or injection system for mixing fuel with air. Most cars today have fuel injectors. Injectors fuel can be of two types: throttle body or port. In an injection system Throttle body, usually a fuel injector is used to supply fuel to all cylinders of the engine. In a port injection system, there is a fuel injector for each cylinder.
Air Filter
Air filters remove dirt and dust from the air being drawn into the engine. Thousands of gallons of air is drawn into the engine per gallon of gasoline burned. A dirty air filter can cause low fuel efficiency by "choking out" (reduction of air-fuel ratio) to the engine. Dirty air also can cause premature failure of vital engine components (eg bearings, valves, pistons and rings).
PCV Valve
The positive crankcase ventilation (PCV) valve reduces air pollution, increase fuel economy and excessive gas circulates. The PCV valve reduces the air pressure inside the engine. A valve connected reduces fuel efficiency and increases vehicle emissions.
Filter oil
The fuel filter is located between the fuel tank and carburetor or injection system, clean fuel in the engine. The filter fuel under the vehicle near a frame member or under the hood, near the carburetor or fuel injectors. Fuel filters have an element of type paper on them to collect dirt. clogged fuel filters slow the delivery of fuel, lower the engine performance and cause excessive wear on the fuel pump.
CCV Filter
The crankcase ventilation filter is usually placed inside the air filter housing and is connected to the valve PCV through a tube or hose. (CCV filter is sometimes called the VGA input filter.) This filter cleans the air entering the engine crankcase.
Tech Advice
Changing fuel filter
By changing the fuel filter in your vehicle, it is important to prevent fuel on your skin or eyes. All services of the fuel system should be in a well ventilated area and with the engine cool. It is also important to relieve pressure fuel. Some vehicles with fuel injection systems run up to 85 PSI (pounds per square inch) fuel pressure. Always glasses security.
Improve Fuel Economy
There are several things that contribute to good fuel economy. Over time, new technologies have contributed to better fuels and fuel supply systems. The do-it-yourselfer can improve fuel consumption by:
Problems Guide
Excessive fuel consumption
A dirty air filter
Low tire pressure
Pressure Tire
Probably the highest and the easier it is to regularly check the tire pressure. The low pressure tires causes friction resistance on the highway. This reduces fuel economy and increased tire wear. Having the tire pressure error may also increase the chances of a dangerous blowout.
Tuning
A properly tuned engine (Replacing ignition components such as spark plugs and replacing fuel-related components such as air filter) can improve fuel mileage. An engine malfunction can waste up to 15% extra fuel.
Wheel alignment
If the wheels are not in contact with the road surface properly, the fuel mileage decreases due to increased friction.
Air conditioning
Enforcement of extra accessories puts more load on the engine, requiring more fuel.
Oil Changes
Change oil as required by the manufacturer increase fuel economy. clean engine oil cooler has a cleaning lubrication and sealing properties of dirty oil.
Refrigeration system
If the engine is running too cold can decrease fuel economy. The thermostat adequate and regular cleaning will ensure proper operation.
Brakes
If the brakes are dragging or stroke, can cause more friction resistance for the engine to overcome, which reduces fuel economy.
Avoid Excessive Use of idle
If your vehicle is not moving, going to zero miles to the gallon. It is much better for the environment and your pocket turn off your vehicle if you sit for an extended period of time.
Tech Tip
Excessive Idling
Often vehicles are left idling. Short idle, like sitting at a traffic light is not a problem. But an engine left idling for an hour can burn three gallons of gas, adding unnecessary pollution of our atmosphere. A well-tuned vehicle does not require a lot of fuel to start. It is much more efficient to turn off the engine instead of letting it idle for long periods of time.
Combining Travel
One of the best ways to increase fuel economy and life of your engine is to plan ahead. Short trips are hard on engines. Short trips in engines not poor economy fuel have time to reach optimum operating temperature, causing. The combination of short errands also put less miles on his vehicle.
Moderate speed
More vehicles get the best fuel economy of 55 miles per hour. Also is important to avoid sudden accelerations and decelerations. "Stop and go" traffic dramatically reduces fuel economy. Using your cruise control to maintain constant speed on the highway will also increase its fuel economy.
Fuel prices
Fuel prices for the first time a concern in the 1970s but have gained attention again. Although the technology is to improve fuel efficiency, much of public has decided to buy the gas guzzling vehicles (eg, sport utility vehicles). Each year, more and more vehicles are put into the roads consume more fuel and more. If the fuel supply decreases and demand for fuel, prices will surely increase. Contrary to belief, Fuel is only marked up about 5% in retail outlets. The local service station or convenience store for about 8-10 cents per gallon of gas sold.
Summary
When pulling up to a gas pump, it is important to supply the engine with the fuel that the manufacturer automotive recommended. The purpose of the fuel system is to store, transfer and then mix the fuel with air. In a gasoline engine, the lower the octane number Most likely the engine will knock. Gasoline engines are internal combustion engines. Diesel engines are compression ignition engines. Diesel fuel is introduced in two grades: No. 1 and No. 2. The outdoor temperature determines the type of diesel for use - No. 2 in the warm weather and No. 1 in cold weather. Several parts of the fuel system of working together to supply clean fuel and air into the engine. Fuel economy can be increased through tuning, the correct tire pressure, oil changes, and moderate your speed. For more technology. tips visit our system automotive fuel table support page.
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