Definitions

1. Fuel is a material with one type of energy which can be transformed into another usable energy.
2. Fuel is a solvent that can eat away at seals and gaskets. (Web site)
3. A fuel is burnt in a heat exchanger to produce heat.
4. Fuel is mixed with air and then combusted in cylinders to make torque. (Web site)
5. Fuel is delivered to fuel injector 66 by fuel system (not shown) including a fuel tank, fuel pump, and fuel rail (not shown). (Web site)

Liquid Oxygen

1. One form of the fuel known as RP-1 is burned with liquid oxygen as rocket fuel.
2. Unlike most first-stage rocket engines, which use solid fuel or kerosene, the RS-68 engines burn liquid hydrogen and liquid oxygen. (Web site)

Oxidizer

1. Ethanol was commonly used as fuel in early bipropellant rocket (liquid propelled) vehicles, in conjunction with an oxidizer such as liquid oxygen. (Web site)
2. Larger rockets use liquid oxygen as their oxidizer, which is mixed and ignited with the fuel for propulsion. (Web site)
3. A small amount of fuel and oxidizer is swapped and combusted to supply power for the turbines. (Web site)

Common Rail

1. FIG. 3a shows the case in which the high-pressure pump 4 is required to supply the maximum possible quantity of fuel to the common rail 3, i.e.
2. The common rail 6 is supplied with fuel at high pressure by a high-pressure pump, designated as a whole by 7, via a delivery pipe 8. (Web site)
3. In order to vary the quantity of fuel supplied by the high-pressure pump 4 to the common rail 3, i.e.

Fuel Supply

1. Fuel in the fuel supply and return lines 34 and 35 are at a relatively low pressure relative to that in common rail 16, which contains pressurized oil. (Web site)
2. Fuel is transferred through these fuel supply lines to the fuel injector device attached to each cylinder. (Web site)
3. A fuel supply 18 and oxidant supply 19 are provided into the combustion chamber for combustion. (Web site)

Improved Fuel Economy

1. This results in more power, improved fuel economy, and lower emissions.
2. Variable displacement is an automobile engine technology that allows the engine displacement to change for improved fuel economy.
3. The new torque converter allows for lock-up activation during a much wider range of driving conditions, which, in turn, generates improved fuel economy.

Octane Rating

1. The speed of the flame front is directly affected by the compression ratio, fuel mixture temperature, and octane rating or cetane number of the fuel. (Web site)
2. This is desirable for improved fuel economy because the compression ratio in a spark ignition engine is limited by the octane rating of the fuel used.
3. The higher the octane rating, the harder it is to burn the fuel, which allows for a higher compression ratio.

Fuel Injection System

1. It includes the Carburetor or Fuel injection system, Air cleaner, Intake manifold, Intake ports, and Intake valves.
2. A carburetor or fuel injection system adds fuel to the airflow in the correct proportion, providing energy to the engine. (Web site)
3. Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines. (Web site)

Fuel Injection Systems

1. Larger gasoline engines such as used in cars have mostly moved to fuel injection systems (see Gasoline Direct Injection).
2. Introduces fuel, ignition, and exhaust systems theory, diagnosis, repair and service for vehicles with carburetion and fuel injection systems.
3. The goal of all fuel injection systems is to carefully meter the amount and timing of fuel to each cylinder.

Ignition

1. This permits spark controlled ignition as opposed to auto-ignition in an engine which uses a fuel adapted for spark ignition. (Web site)
2. This is the time period between the start of injection and start of combustion (ignition) of the fuel. (Web site)
3. The combustion cycle comprises five or six phases: Induction, Compression, (in some engines) Fuel Injection, Ignition, Combustion, and Exhaust.

Internal Combustion

1. In 1807 Francois Isaac de Rivaz of Switzerland invented an internal combustion engine that used a mixture of hydrogen and oxygen for fuel.
2. The system in an internal combustion engine that initiates the chemical reaction between fuel and air in the cylinder charge by producing a spark. (Web site)
3. The slow laminar burning speed of gasoline poses an interesting problem when used as a fuel for an internal combustion engine. (Web site)

Spark Plugs

1. Instead of using spark plugs, ignition of the fuel is accomplished by the heat of highly compressed air. (Web site)
2. When a fuel injected engine that normally starts quite easily has to be coaxed to life, it often means the spark plugs are overdue for a change. (Web site)
3. Spark plugs produces spark which the helps to ignite the fuel inside the engine.

Cylinders

1. Engine power is proportional to the amount of air and fuel that can get into the cylinders. (Web site)
2. Fuel and air are mixed before they enter cylinders; ignition occurs with a spark. (Web site)
3. Further, the ignition in each of the cylinders is controlled to be in the proper sequence relative to the injection of the air and fuel. (Web site)

Air Fuel Mixture

1. Again, more than one application of fuel can be used at intervals throughout the operation of charging the combustion chamber with air fuel mixture. (Web site)
2. No. Since the ECU cuts all fuel to the engine when it engages fuel cut, there is no fuel in the air fuel mixture to detonate.
3. The piston moves up and compresses the trapped air fuel mixture that was brought in by the intake stroke. (Web site)

Intake Stroke

1. During the intake stroke the inlet valve opens at the top of the cylinder, as the piston moves down air and fuel are drawn into the cylinder. (Web site)
2. The Otto cycle comprises an intake stroke, in which an intake valve opens and a mixture of air and fuel is directed into the cylinder of the engine. (Web site)
3. Stroke 1: The Intake Stroke - Air and fuel are drawn into the combustion chamber with the intake valve open.

Intake Manifold

1. In gasoline engines the fuel usually is injected into the intake manifold and mixed with air, and the resulting mixture is delivered to the cylinder. (Web site)
2. The fuel is sprayed directly into the intake ports by the injectors that are mounted in the intake manifold just above the ports.
3. Especially at low speed, the slow air flow in the intake manifold led to imperfect mixing of fuel and air, hence knocking and reduced power and torque. (Web site)

Fuel Line

1. Others have tried to accomplish a similar function by creating a swirling movement of the fuel in the fuel line connected to the combustion chamber. (Web site)
2. A needle attached to the float opens and closes an opening in the fuel line, metering the correct amount of fuel into the carburetor.
3. At the same time, a fuel line in a "wet system," is controlled by another solenoid, and releases fuel into the motor. (Web site)

Fuel Air Mixture

1. The combustion chamber is the volume of space where the fuel air mixture is burned in an engine.
2. A normal spark ignition engine compresses the fuel air mixture then when it's fully compressed it fires a spark across the spark plug. (Web site)
3. The fuel air mixture can be stratified, or from a stoichiometric to a very lean mixture for spark ignition, to a very rich mixture for diesel operation. (Web site)

Air Mixture

1. In order for an engine to work efficiently the fuel must be vaporized into the incoming air in what is commonly referred to as a fuel air mixture. (Web site)
2. This forces the fuel air mixture into a very small space at the top of the cylinder when the piston achieves the top of its stroke. (Web site)
3. When the intake ports open, the fuel air mixture can be made to enter tangentially to the cylinder.

Injection

1. Fuel injection is a technology used in internal combustion engines to mix the fuel with air prior to combustion.
2. Additionally, fuel injection allows for more precise control over the mixture of fuel and air, both in proportion and in uniformity.
3. Fuel injection is fully sequential; each cylinder receives a jet of fuel precisely during the intake stroke. (Web site)

Gaseous Fuel

1. Whatever the choice of fuel, all internal combustion engines rely on the effects of a controlled explosion, where a gaseous fuel reacts with oxygen. (Web site)
2. By contrast, a gaseous fuel is already a vapor at injection and will immediately mix with the air in the combustion chamber. (Web site)
3. In this case, there is a premixing of air and gaseous fuel in intake passage 6, which can be expedient for certain operating states of the combustion engine. (Web site)

Fuel Mixture

1. The spark ignites the air and fuel mixture within the combustion chamber or cylinder to create high temperature combustion to power the engine. (Web site)
2. The main function of the system is to provide ignition in the form of a spark to the compressed air+fuel mixture in the cylinder. (Web site)
3. In the two-stroke cycle the fuel mixture or air is introduced through the intake port when the piston is fully withdrawn from the cylinder. (Web site)

Injector

1. The spark ignited direct injection fuel system may include a fuel injector that provides a fuel flow to the combustion chamber during the intake stroke. (Web site)
2. The amount of fuel supplied to the engine is determined by the amount of time the fuel injector stays open. (Web site)
3. In many gasoline engines, fuel is supplied to the intake manifold of the engine by way of a carburetor or fuel injector having an air intake. (Web site)

Engines

1. Diesel Direct Injection On engines with diesel direct injection, the fuel is injected directly into the combustion chamber.
2. Engines may use various forms of fuel delivery to provide a desired amount of fuel for combustion in each cylinder. (Web site)
3. Ignition In all engines some means of igniting the fuel in the cylinder must be provided. (Web site)

Fuel Efficiency

1. A number of devices have been developed to increase fuel efficiency in internal combustion engines by mixing more air with the fuel. (Web site)
2. Power in race trim at that time was lower than for qualifying due to the need for greater reliability and fuel efficiency during the race.
3. The result is the same power and refinement as a petrol engine, but with better fuel efficiency and lower emissions.

Compressed

1. Fuel and air in the cylinder have been compressed, and when the spark plug fires the mixture ignites. (Web site)
2. Lack of compression - If the charge of air and fuel cannot be compressed properly, the combustion process will not work like it should.
3. However, air gets hotter as it is compressed, and if the compression ratio is too high, the heat of compression will ignite the fuel prematurely.

Compressed Air

1. On diesel engines, the fuel starts burning as soon as it is injected due to the high heat of compressed air in the cylinder. (Web site)
2. A diesel engine takes in just air, compresses it and then injects fuel into the compressed air. (Web site)
3. In a diesel engine (center), combustion begins when fuel is injected into hot, highly compressed air. (Web site)

Emissions

1. If the mixture is richer, ie if the proportion of fuel is higher, the emissions of carbon monoxide (CO) and hydrocarbons (HC) will increase. (Web site)
2. Next, we'll look at the engine subsystems that maintain what goes in (oil and fuel) and what comes out (exhaust and emissions). (Web site)
3. Modern engines have all kinds of other details, like emissions controls, 4-valves per cylinder to improve air and fuel flow, etc.

Fuel Consumption

1. The way in which fuel is injected into the cylinders of diesel vehicles determines their torque, fuel consumption, emissions and noise level. (Web site)
2. Therefore, the two-cycle engines are lower in efficiency and higher in fuel consumption. (Web site)
3. FSI uses the direct injection of petrol into the combustion chamber to improve efficiency and hence reduce fuel consumption and emissions. (Web site)

Petrol

1. In spark-ignition engine (petrol engine) the charge consists of a mixture of air and fuel.
2. In a diesel engine, unlike a petrol engine, the air and fuel do not mix outside the engine. (Web site)
3. When a petrol engine is used to power a car, about 75% of the energy from the fuel is wasted. (Web site)

Internal Combustion Engines

1. Gasoline (or Petrol) is a petroleum liquid mixture consisting primarily of hydrocarbons used as fuel in internal combustion engines. (Web site)
2. The ammonia can be used directly as a fuel for internal combustion engines, or decomposed into nitrogen and hydrogen gas for use in fuel cells. (Web site)
3. Found in most internal combustion engines, a fuel filter is a filter in the fuel line that screens out dirt and rust particles from the fuel.

Combusted

1. The fuel is combusted with oxygen in a combustor to generate high temperature products of combustion. (Web site)
2. Next, during the expansion or power stroke (intake valve 14 closed and exhaust valve 16 closed), the air and fuel within cylinder 12 may be combusted. (Web site)
3. The compressed air is mixed with fuel and combusted for expansion during a power stroke. (Web site)

Compression Stroke

1. A compression stroke then occurs in which the piston compresses the mixture of fuel and air to increase the pressure in the cylinder. (Web site)
2. In the case of the gasoline engine, both fuel and air are present in the cylinder during the compression stroke. (Web site)
3. Instead, the fuel is injected into the cylinder at the end of the compression stroke as in the process known in the prior art for diesel engines. (Web site)

Diesel

1. This is the first time a sports car could compete for overall victories with diesel fuel against cars powered with regular fuel or methanol and bio-ethanol.
2. As diesel fuel is injected for combustion, fuel ignites as it comes in contact with the compressed air.
3. The most common method of classification is based on the type of fuel used; that is, whether the engine burns gasoline or diesel fuel. (Web site)

Diesel Engines

1. Conversely, fuel for diesel engines is far less volatile than petrol and thus these engines hardly ever suffer from vapor lock. (Web site)
2. In case of gasoline or diesel engines, the products of combustion generated by the combustion of fuel and air within the cylinder form the working fluid.
3. Glow plugs are required because diesel engines produce the heat needed to ignite their fuel by the compression of air in the cylinder and combustion chamber. (Web site)

Carburetors

1. Fuel injection provides better metering of fuel and air than carburetors.
2. To control the amount of fuel that mixes with the air, most carburetors use a float in a fuel chamber.
3. Further, fuel and air is mixable externally in all examples by traditional means such as carburetors or port-type fuel injectors. (Web site)

Carburetor

1. The air and evaporated fuel take much less time than the liquid streams and large droplets to get from the carburetor to the cylinders. (Web site)
2. Fuel injection distributes the fuel more evenly to the cylinders than does a carburetor; more power can be developed and undesirable emissions are reduced. (Web site)
3. The problem is that carburetor reacts slowly to this, so air gets through the carburetor with the incorrect amount of fuel. (Web site)

Injectors

1. Fuel Injectors Each cylinder has a fuel injector designed to meter and inject fuel into the cylinder at the proper instant.
2. Also, on fuel injected vehicles (such as Harley's '95 FLHTCI), there is another table in the chip which tells the computer when to fire the fuel injectors. (Web site)
3. During that time the fuel pressure may be too low for the fuel injectors to provide enough fuel to start the engine quickly and reliably. (Web site)

Fuel Rail

1. Uses intake manifold vacuum to operate a pressure valve to control the fuel pressure in the fuel rail. (Web site)
2. When the pressure in the pump chamber is higher than the pressure in the fuel rail, the outlet valve opens and fuel is forced into the fuel rail.
3. Electric Fuel Pump - A 12-volt high-pressure fuel pump, (located in the fuel tank) supplies fuel under pressure to the fuel rail on the intake manifold. (Web site)

Fuel Pumps

1. Fuel pumps are used to raise the fuel pressure above the pressure in the combustion chamber so that the fuel can be injected.
2. Fuel is delivered to fuel injector 30 by a gaseous fuel system (not shown) including a fuel tank, fuel pumps, and a fuel rail. (Web site)
3. Water causes corrosion of vital fuel system components: fuel pumps, injector pumps, fuel lines, etc. (Web site)

Fuel Pump

1. Vapor lock typically occurs in fuel systems where a mechanically driven fuel pump mounted on the engine draws fuel from a tank mounted lower than the pump. (Web site)
2. If pinching off the fuel return line produces the same results, the problem is the check valve in the fuel pump (replace the pump).
3. Use with every new tank of fuel for the best performance and protection against fuel pump wear, injector wear and injector deposits.

Gasoline

1. Note: The stoichiometric ratio changes as a function of the fuel; diesel, gasoline, ethanol, methanol, propane, methane (natural gas), or hydrogen.
2. In one example, fuels with different alcohol contents could include one fuel being gasoline and the other being ethanol or methanol. (Web site)
3. The different types of fuel commonly used for car combustion engines are gasoline (or petrol), diesel, and kerosene. (Web site)

Diesel Fuel

1. Diesel fuel has low flammability, leading to a low risk of fire caused by fuel in a vehicle equipped with a diesel engine. (Web site)
2. Remember that diesel fuel is mostly composed of oil; the smoke is a byproduct of burning this type of fuel. (Web site)
3. Instead, diesel fuel is injected into the cylinder, and the heat and pressure of the compression stroke cause the fuel to ignite. (Web site)

Combustion

1. With both gasoline and Diesel engines, energy is released in a series of small explosions (combustion) as fuel reacts chemically with oxygen from the air.
2. Fuel combustion is the primary difference between gasoline and diesel engines.
3. When fuel combustion or burning isn't complete, carbon monoxide enters the air.

Fuel Economy

1. This, in turn, controls the flow of air and fuel into and out of the engine which determines engine performance, fuel economy and emissions. (Web site)
2. Fuel flow is reduced and spray patterns are disrupted, decreasing engine efficiency, power and fuel economy, while increasing exhaust emissions. (Web site)
3. In effect, this burns more of the available fuel, resulting in increased combustion efficiency for improved power and fuel economy with reduced emissions. (Web site)

Fuel Injectors

1. The combustion process converts the fuel's chemical energy into heat energy, whether the fuel is supplied by fuel injectors or a carburetor. (Web site)
2. At the twist of the throttle control, the butterfly valve opens, and the throttle body mixes fuel with air using electronically controlled fuel injectors.
3. In the case of a compression-ignition engine, the fuel may be introduced to the combustion chamber through fuel injectors mounted in head 39. (Web site)

Fuel Injector

1. And in a direct injection system the fuel to the cylinder is supplied by a fuel injector placed inside the cylinder. (Web site)
2. These fuels are readily atomized, suspended in air and vaporized by use of a fuel injector that injects the fuel into the intake air of the intake manifold. (Web site)
3. This enables the fuel and air mixture to flow from the carburetor or fuel injector into the combustion chamber. (Web site)

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