### device | machine | motor:

Engine
* Many engines mount the injectors on the exterior of the engine.
* Most engines burn energy
  - fossil fuel
  - gasoline
* Most engines change chemical energy
* Most engines convert chemical energy
  - liquid fuel energy
* Most engines convert potential chemical energy
  - create power
* Most engines generate electricity
  - go bang as the result of overheating due to a failure to maintain the cooling system
* Most engines have a minimum electrical system - just enough to provide a spark
  - torque peak at a specific engine speed
  - cooling-water passages within the cylinder head
  - cylinders
  - low power
  - pistons
  - potential energy
  - pressure
  - special devices or valves to cut off the air or fuel in an emergency
  - two valves for each cylinder, one intake and one exhaust valve
* Most engines make electricity
  - noise
* Most engines produce electricity
  - maximum torque
  - radiation
  - range in size
  - require pistons
  - use energy
* Most engines use for gases
  - natural gases
  - transport natural gases
  - plugs
  - solar power
* Some engines actually benefit from reversing the main seals to keep air out of the crankcase
  - are Four-Stroke and use push rods and valves just like an automobile engine
  - burn petrol
  - carry first aid kits to help people who are injured or hurt
  - contain gases
* Some engines have a propeller, instead of a fan
  - auxiliary combustion chambers
  - balance shafts that run at twice the crankshaft speed
  - flat steel plates attached to each end of the cylinder block
  - magnets
  - piston magnets
  - ports through which pistons can be inspected
  - timing gears or a timing chain
  - reduce friction
  - respond to increasing the exhaust flow so that it almost matches the intake flow
* Some engines use a chain
  - steam
* also carry foam to use on wild land fuels
  - wildland fuels
* are complex systems that never approach chemical or thermal equilibrium
  - instruments
* are located in planes
  - repair shops
  - mechanical devices
* are part of automobiles
  - cars
  - motorcycles
  - trains
* are used for power
* can use pure ethanol or ethanol mixed with gasoline.
* cause energy.
  - one form of energy into another, like chemical energy of gas into mechanical energy
* create forces
* do fine jobs
* generate energy
* have a defined life, and there are several variables that can affect their longevity
  - capability
  - enough power
  - exhaust headers
  - impressive torque
  - separate headers
* includes power trains
  - sections
* knock is the result of combustion chamber pre-ignition
  - uncontrolled combustion associated with using gasoline with too little octane
* lose power.
  - sound
  - wheeze sound
  - foot pound torque
  - much torque
* provide forces
* seize when they are low on oil.
* to generate electricity.
  - fuel to produce mechanical energy
  - petroleum products
+ Ethanol, Ethanol fuel: Fuel :: Organic compounds
+ Firefighter: Occupations :: Firefighting
  * If it does not pump water it is called a 'truck'. A rescue truck mainly responds to and has equipment for car wrecks,collapsed buildings,search and rescue,stuck elevators and other things. If it carries the fire chief to fires, it is a fire chief car. Fire engines pump water and foam which is used to put out the fire. Fire trucks carry ladders and tools to help rescue people from burning buildings. Some engines carry first aid kits to help people who are injured or hurt. Fire engines can also carry tools and gear to rescue people from collapsed buildings,car accidents,stuck elevators, and many other situations.
+ Fixed-wing aircraft, Parts, Engines: Aircraft :: Aerospace engineering
  * Engines push the plane forward. This makes sure that air goes over the wings, which makes the plane fly. Some fixed-wing aircraft, such as gliders, don't have engines. Instead they use gravity to give them forward speed.
+ Turbocharger, Multiple turbochargers, Parallel: Motors :: Aircraft engines
  * Some engines use two turbochargers. They will both be the same size. They are normally smaller than used on single-turbos engines. They are often used on V-type engines, such as V6s and V8s. Each turbo is powered by a separate exhaust pipe from the engine. Because they are smaller, they reach their optimal boost more quickly.