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  2. Engine knocking - Wikipedia

    en.wikipedia.org/wiki/Engine_knocking

    In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.

  3. Dead centre (engineering) - Wikipedia

    en.wikipedia.org/wiki/Dead_centre_(engineering)

    Top dead center in a gasoline engine. In a reciprocating engine, the dead centre is the position of a piston in which it is either farthest from, or nearest to, the crankshaft. The former is known as top dead centre (TDC) while the latter is known as bottom dead centre (BDC). [1] Position of pistons

  4. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    The angle domain equations above show that the motion of the piston (connected to rod and crank) is not simple harmonic motion, but is modified by the motion of the rod as it swings with the rotation of the crank.

  5. Component parts of internal combustion engines - Wikipedia

    en.wikipedia.org/wiki/Component_parts_of...

    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.

  6. Glossary of automotive terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_automotive_terms

    Also gas pedal. A throttle in the form of a foot-operated pedal, or sometimes a hand-operated lever or paddle, by which the flow of fuel to the engine (and thereby the engine speed) is controlled, with depression of the pedal causing the vehicle to accelerate. admission stroke See induction stroke. aftermarket air brake 1. A type of brake in which the force that actuates the brake mechanism is ...

  7. 29 House Republicans want Trump to scrap the IRS's free ... - AOL

    www.aol.com/news/29-house-republicans-want-trump...

    More than two dozen House Republicans are asking President-elect Donald Trump to terminate the Internal Revenue Service's free direct tax-filing system as soon as day one of his presidency.

  8. Homogeneous charge compression ignition - Wikipedia

    en.wikipedia.org/wiki/Homogeneous_charge...

    The first, called Combined Combustion System or CCS, is based on the VW Group 2.0-litre diesel engine, but uses homogeneous intake charge. It requires synthetic fuel to achieve maximum benefit. The second is called Gasoline Compression Ignition or GCI; it uses HCCI when cruising and spark ignition when accelerating.

  9. The Sneaky Sign of Inflammation You Shouldn't Ignore - AOL

    www.aol.com/sneaky-sign-inflammation-shouldnt...

    First, it’s important to understand that inflammation isn’t always bad. “Inflammation is one of the body’s key mechanisms for maintaining homeostasis, acting as a natural response to ...