Assertion: engine's valve | /r/HasProperty | opened
Facets:
value: by the time
type: TEMPORAL
Source sentences:
text: This motion ensures that the valve is opened only during the exhaust stroke of the cylinder.
text: Therefore, at higher rpm ranges you want the intake valve to open prior to the intake stroke -- actually back in the exhaust stroke -- so that by the time the piston starts moving downward in the intake stroke, the valve is open and air moves freely into the cylinder during the entire intake stroke.
text: For the next stroke, the ECU calculates engine load at the new, higher RPM, and decides how to open the valve: early or late, wide-open or half-open.
text: The combination of valve cams and ignition cams insure that valves are opened and closed at the correct time in the engine cycle and that ignition occurs when the valves are closed and the volume of the cylinder is the smallest.