When the piston has moved up to the top of its stroke inside the cylinder, and the remaining volume inside the head or combustion chamber has been reduced to 100 cc, then the compression ratio would be proportionally described as 1000: 100, or with fractional reduction, a 10: 1 compression ratio.

A Power stroke: When the piston reaches a point just before top dead center, the spark plug ignites the fuel mixture.

Operation: When the piston moves from bottom dead center ( BDC ) to top dead center ( TDC ) the fresh air and fuel mixture enters the crank chamber through the intake port.

When the piston is at bottom dead center, the burnt gases escape from the exhaust port.

When carburetors are used in aircraft with piston engines, special designs and features are needed to prevent fuel starvation during inverted flight.

When hydraulic pressure from the master cylinder acts upon the piston cup, the pistons are pushed toward the shoes, forcing them against the drum.

When the brakes are not being applied, the piston is returned to its original position by the force of the brake shoe return springs.

When the brake pedal of a modern vehicle with hydraulic brakes is pushed, ultimately a piston pushes the brake pad against the brake disc which slows the wheel down.

When the regulator valve V was opened, steam was let out of the boiler filling the space in the cylinder beneath the piston.

When a valve on the pipe was opened, the vacuum in the condenser would, in turn, evacuate that part of the cylinder below the piston.

When the piston, propelled by steam, reached the top of the cylinder, the steam inlet valve closed and the valve controlling the passage to the condenser opened.

When he soon improved the device by removing the poppet valve action, these three components became the piston valve, the slide valve, and the graduating valve.

When starting the engine, compressed air is admitted to whichever cylinder has a piston just over top dead center, forcing it downward.

When the rules prohibiting vertical pistons were lifted, bugles received two vertical piston valves.

When the barrel recoiled, the piston was pulled back by the barrel's recoil and thus pushed the oil through a small orifice and into a second cylinder placed underneath.

When the valve seat drops out of the cylinder head, it falls into the cylinder and damages the piston and cylinder head.

When the mainstage signal was received, pneumatic pressure was applied against the gas generator control valve actuator assembly which moved the piston and opened the fuel poppet.

When an automotive timing belt is replaced, care must be taken to ensure that the valve and piston movements are correctly synchronized.

When Watt sent someone to make a sketch of how this new engine worked, he discovered that the steam was condensed under a second piston and this was then pushed down when fresh steam entered the cylinder, forcing out the condensate.

When triggered by pressing a button, the piston springs up, creating suction that sucks the solder off the soldered connection.

When a compression release engine brake is active, a valve releases the pressure from the cylinder before the piston starts back down, so the slowing effect is present on the up stroke, but no accelerating effect is present on the down stroke and the net effect is the vehicle slows down.

When the throttle is closed, the relative manifold pressure drops below atmospheric pressure and the resulting pressure differential operates the blowoff valve's piston.

When an engine starts its exhaust stroke, the piston moves up the cylinder bore, decreasing the total chamber volume.

When the pressure behind the piston is released the piston is pushed back by the force of the pressure from the input.

When I say move, a guy moves ''!!

" When the tone poem moves into the blues, " our American friend ... has succumbed to a spasm of homesickness.

When the wind blows horizontally, it presses on and moves the ball ; because ping-pong balls are very lightweight, they move easily in light winds.

When rates move higher, the bond part of a convertible bond tends to move lower, but the call option part of a convertible bond moves higher ( and the aggregate tends to move lower ).

When the price of the stock the bond is convertible into moves higher, the price of the bond tends to rise.

When the particle moves, its velocity is

When a pilot moves the control column ( or sidestick ), a signal is sent to a computer ( analogous to moving a game controller ) the signal is sent through multiple wires ( channels ) to ensure that the signal reaches the computer.

When the listener moves slightly to the side, however, this phantom channel disappears or is greatly reduced.

When a river is in flood, it is at its most powerful, and moves the greatest amount of sediment.

When the hailstone moves into an area with a high concentration of water droplets, it captures the latter and acquires a translucent layer.

When a key is depressed, it moves a magnet, which is detected by the solid-state sensor.

" When " Air steps " or " aerials " such as the Hip to Hip, Side Flip, and Over the Back ( the names describe the motion of the woman in the air ) began to appear in 1936, the old guard of dancers such as Leon James, Leroy Jones, and Shorty Snowden disapproved of the new moves.

When the Union of South Africa was founded in 1910 the colony was still controlled by the British and moves were made to transfer it to the Union.

When a body at these points is perturbed, it moves away from the point, but the factor opposite of that which is increased or decreased by the perturbation ( either gravity or angular momentum-induced speed ) will also increase or decrease, bending the object's path into a stable, kidney-bean-shaped orbit around the point ( as seen in the rotating frame of reference ).

When a charged particle moves through a magnetic field B, it feels a Lorentz force F given by the cross product:

" Actor Jack Nicholson once said, " When Marlon dies, everybody moves up one.

When the moon is closer to the earth, it moves faster ; when it is farther, it moves slower.

When León became the first city in Nicaragua to fall to the Sandinistas, he responded with aerial bombardment, famously ordering the air force to " bomb everything that moves until it stops moving.

When you bend backward the top ( base ) of the sacrum moves forward relative to the ilium ; when you bend forward the top moves back.

When the important action shifts to a new position in the frame, the operator moves the scanner to follow it, creating the effect of a " pan " shot.

When the temporal weapon fires on an object, it moves that object outside the space-time continuum, eliminating the object from causality not only in the present and the future, but also the past, changing history to a state where the object never existed.