Search results
Results From The WOW.Com Content Network
Engines must be designed so that ignition conditions occur at the desired timing. To achieve dynamic operation, the control system must manage the conditions that induce combustion. Options include the compression ratio, inducted gas temperature, inducted gas pressure, fuel-air ratio, or quantity of retained or re-inducted exhaust.
For instance, to safely fill a new container or a pressure vessel with flammable gases, the atmosphere of normal air (containing 20.9 volume percent of oxygen) in the vessel would first be flushed (purged) with nitrogen or another non-flammable inert gas, thereby reducing the oxygen concentration inside the container. When the oxygen ...
An illustration of several key components in a typical four-stroke engine. For a four-stroke engine, key parts of the engine include the crankshaft (purple), connecting rod (orange), one or more camshafts (red and blue), and valves. For a two-stroke engine, there may simply be an exhaust outlet and fuel inlet instead of a valve system.
For example, in rocket engines, such as the Rocketdyne F-1 rocket engine [7] in the Saturn V program, instabilities can lead to massive damage of the combustion chamber and surrounding components (see rocket engines). Furthermore, instabilities are known to destroy gas-turbine-engine components during testing. [8]
Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages
The two-body problem is interesting in astronomy because pairs of astronomical objects are often moving rapidly in arbitrary directions (so their motions become interesting), widely separated from one another (so they will not collide) and even more widely separated from other objects (so outside influences will be small enough to be ignored safely).
The mean effective pressure (MEP) is a quantity relating to the operation of a reciprocating engine and is a measure of an engine's capacity to do work that is independent of engine displacement. [1] Despite having the dimension of pressure, MEP cannot be measured. [ 2 ]
ISO 8178-3:2019 Part 3: Test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using a filter type smoke meter; ISO 8178-4:2020 Part 4: Steady-state and transient test cycles for different engine applications; ISO 8178-5:2021 Part 5: Test fuels; ISO 8178-6:2018 Part 6: Report of measuring results and test